AdapterViewAnimator.java revision ef52176f1244a5bb98d82a0c8c7f4351edec17a1
13db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen/* 23db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Copyright (C) 2010 The Android Open Source Project 33db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 43db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Licensed under the Apache License, Version 2.0 (the "License"); 53db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * you may not use this file except in compliance with the License. 63db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * You may obtain a copy of the License at 73db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 83db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * http://www.apache.org/licenses/LICENSE-2.0 93db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 103db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Unless required by applicable law or agreed to in writing, software 113db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * distributed under the License is distributed on an "AS IS" BASIS, 123db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 133db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * See the License for the specific language governing permissions and 143db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * limitations under the License. 153db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 163db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 173db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenpackage android.widget; 183db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 1944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport java.util.ArrayList; 201b065cd1401253f999caa5d0ac12909407cef00eAdam Cohenimport java.util.HashMap; 2144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 22ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohenimport android.animation.AnimatorInflater; 23a18a86b43e40e3c15dcca0ae0148d641be9b25feChet Haaseimport android.animation.ObjectAnimator; 243db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.content.Context; 253db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.content.Intent; 263db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.content.res.TypedArray; 273db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.os.Handler; 283db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.os.Looper; 29b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohenimport android.os.Parcel; 30b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohenimport android.os.Parcelable; 313db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.util.AttributeSet; 323db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.view.View; 3344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenimport android.view.ViewGroup; 34839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohenimport android.view.ViewGroup.LayoutParams; 353db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.view.animation.Animation; 363db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohenimport android.view.animation.AnimationUtils; 373db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 383db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen/** 393db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Base class for a {@link AdapterView} that will perform animations 403db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * when switching between its views. 413db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 423db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @attr ref android.R.styleable#AdapterViewAnimator_inAnimation 433db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @attr ref android.R.styleable#AdapterViewAnimator_outAnimation 443db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @attr ref android.R.styleable#AdapterViewAnimator_animateFirstView 451b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen * @attr ref android.R.styleable#AdapterViewAnimator_loopViews 463db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 4744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohenpublic abstract class AdapterViewAnimator extends AdapterView<Adapter> 48dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen implements RemoteViewsAdapter.RemoteAdapterConnectionCallback { 493db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen private static final String TAG = "RemoteViewAnimator"; 503db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 5144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 5244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * The index of the current child, which appears anywhere from the beginning 5344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * to the end of the current set of children, as specified by {@link #mActiveOffset} 5444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 553db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen int mWhichChild = 0; 5644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 5744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 5844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Whether or not the first view(s) should be animated in 5944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 603db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen boolean mAnimateFirstTime = true; 613db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 6244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 6344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Represents where the in the current window of 6444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * views the current <code>mDisplayedChild</code> sits 6544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 6644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int mActiveOffset = 0; 6744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 6844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 6944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * The number of views that the {@link AdapterViewAnimator} keeps as children at any 7044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * given time (not counting views that are pending removal, see {@link #mPreviousViews}). 7144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 7244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int mNumActiveViews = 1; 7344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 7444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 751b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen * Map of the children of the {@link AdapterViewAnimator}. 7644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 771b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen private HashMap<Integer, ViewAndIndex> mViewsMap = new HashMap<Integer, ViewAndIndex>(); 7844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 7944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 8044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * List of views pending removal from the {@link AdapterViewAnimator} 8144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 821b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen ArrayList<Integer> mPreviousViews; 8344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 8444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 8544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * The index, relative to the adapter, of the beginning of the window of views 8644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 8744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int mCurrentWindowStart = 0; 8844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 8944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 9044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * The index, relative to the adapter, of the end of the window of views 9144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 9244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int mCurrentWindowEnd = -1; 9344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 9444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 9544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * The same as {@link #mCurrentWindowStart}, except when the we have bounded 9644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * {@link #mCurrentWindowStart} to be non-negative 9744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 9844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int mCurrentWindowStartUnbounded = 0; 9944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 10044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 10144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Handler to post events to the main thread 10244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 10344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen Handler mMainQueue; 10444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 10544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 10644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Listens for data changes from the adapter 10744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 1083db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen AdapterDataSetObserver mDataSetObserver; 1093db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 11044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 11144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * The {@link Adapter} for this {@link AdapterViewAnimator} 11244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 11344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen Adapter mAdapter; 11444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 11544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 11644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * The {@link RemoteViewsAdapter} for this {@link AdapterViewAnimator} 11744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 11844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen RemoteViewsAdapter mRemoteViewsAdapter; 11944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 12044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 12144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Specifies whether this is the first time the animator is showing views 12244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 12344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen boolean mFirstTime = true; 1243db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 12544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 126b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen * Specifies if the animator should wrap from 0 to the end and vice versa 127b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen * or have hard boundaries at the beginning and end 128b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen */ 1291b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen boolean mLoopViews = true; 130b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 131b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen /** 132839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen * The width and height of some child, used as a size reference in-case our 133839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen * dimensions are unspecified by the parent. 134839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen */ 135839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int mReferenceChildWidth = -1; 136839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int mReferenceChildHeight = -1; 137839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 138839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen /** 139ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen * In and out animations. 14044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 141ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen ObjectAnimator<?> mInAnimation; 142ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen ObjectAnimator<?> mOutAnimation; 143ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen 14444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private ArrayList<View> mViewsToBringToFront; 1453db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 146ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen private static final int DEFAULT_ANIMATION_DURATION = 200; 147ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen 1483db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public AdapterViewAnimator(Context context) { 1493db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen super(context); 1505b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy initViewAnimator(); 1513db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 1523db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 1533db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public AdapterViewAnimator(Context context, AttributeSet attrs) { 1543db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen super(context, attrs); 1553db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 15644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen TypedArray a = context.obtainStyledAttributes(attrs, 1571b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen com.android.internal.R.styleable.AdapterViewAnimator); 15844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int resource = a.getResourceId( 1591b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen com.android.internal.R.styleable.AdapterViewAnimator_inAnimation, 0); 1603db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (resource > 0) { 1613db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setInAnimation(context, resource); 162ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen } else { 163ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen setInAnimation(getDefaultInAnimation()); 1643db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 1653db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 1661b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen resource = a.getResourceId(com.android.internal.R.styleable.AdapterViewAnimator_outAnimation, 0); 1673db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (resource > 0) { 1683db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setOutAnimation(context, resource); 169ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen } else { 170ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen setOutAnimation(getDefaultOutAnimation()); 1713db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 1723db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 17344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen boolean flag = a.getBoolean( 1741b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen com.android.internal.R.styleable.AdapterViewAnimator_animateFirstView, true); 1753db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setAnimateFirstView(flag); 1763db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 1771b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mLoopViews = a.getBoolean( 1781b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen com.android.internal.R.styleable.AdapterViewAnimator_loopViews, false); 1791b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen 1803db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen a.recycle(); 1813db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 1825b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy initViewAnimator(); 1833db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 1843db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 1853db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 1863db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Initialize this {@link AdapterViewAnimator} 1873db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 1885b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy private void initViewAnimator() { 1893db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mMainQueue = new Handler(Looper.myLooper()); 1901b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mPreviousViews = new ArrayList<Integer>(); 19144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mViewsToBringToFront = new ArrayList<View>(); 19244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 19344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 1941b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen private class ViewAndIndex { 1951b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen ViewAndIndex(View v, int i) { 1961b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen view = v; 1971b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen index = i; 1981b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } 1991b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen View view; 2001b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen int index; 2011b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } 2021b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen 20344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 20444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * This method is used by subclasses to configure the animator to display the 20544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * desired number of views, and specify the offset 20644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * 20744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param numVisibleViews The number of views the animator keeps in the {@link ViewGroup} 2085b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy * @param activeOffset This parameter specifies where the current index ({@link #mWhichChild}) 20944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * sits within the window. For example if activeOffset is 1, and numVisibleViews is 3, 2105b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy * and {@link #setDisplayedChild(int)} is called with 10, then the effective window will 2115b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy * be the indexes 9, 10, and 11. In the same example, if activeOffset were 0, then the 21244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * window would instead contain indexes 10, 11 and 12. 213b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen * @param shouldLoop If the animator is show view 0, and setPrevious() is called, do we 214b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen * we loop back to the end, or do we do nothing 21544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 2161b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen void configureViewAnimator(int numVisibleViews, int activeOffset) { 21744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (activeOffset > numVisibleViews - 1) { 21844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Throw an exception here. 21944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 22044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mNumActiveViews = numVisibleViews; 22144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mActiveOffset = activeOffset; 22244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mPreviousViews.clear(); 2231b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mViewsMap.clear(); 22444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen removeAllViewsInLayout(); 22544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mCurrentWindowStart = 0; 22644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mCurrentWindowEnd = -1; 22744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 22844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 22944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 23044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * This class should be overridden by subclasses to customize view transitions within 23144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * the set of visible views 23244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * 23344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param fromIndex The relative index within the window that the view was in, -1 if it wasn't 23444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * in the window 23544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param toIndex The relative index within the window that the view is going to, -1 if it is 23644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * being removed 23744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param view The view that is being animated 23844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 23944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen void animateViewForTransition(int fromIndex, int toIndex, View view) { 24044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (fromIndex == -1) { 241ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen mInAnimation.setTarget(view); 242ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen mInAnimation.start(); 24344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } else if (toIndex == -1) { 244ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen mOutAnimation.setTarget(view); 245ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen mOutAnimation.start(); 24644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 2473db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 2483db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 249ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen ObjectAnimator<?> getDefaultInAnimation() { 250ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen return new ObjectAnimator<Float>(DEFAULT_ANIMATION_DURATION, null, "alpha", 0.0f, 1.0f); 251ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen } 252ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen 253ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen ObjectAnimator<?> getDefaultOutAnimation() { 254ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen return new ObjectAnimator<Float>(DEFAULT_ANIMATION_DURATION, null, "alpha", 1.0f, 0.0f); 255ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen } 256ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen 2573db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 2583db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Sets which child view will be displayed. 2593db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 2603db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param whichChild the index of the child view to display 2613db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 2623db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void setDisplayedChild(int whichChild) { 2633db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (mAdapter != null) { 2643db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mWhichChild = whichChild; 2653db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (whichChild >= mAdapter.getCount()) { 2661b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mWhichChild = mLoopViews ? 0 : mAdapter.getCount() - 1; 2673db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } else if (whichChild < 0) { 2681b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mWhichChild = mLoopViews ? mAdapter.getCount() - 1 : 0; 2693db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 2703db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 2713db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen boolean hasFocus = getFocusedChild() != null; 2723db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen // This will clear old focus if we had it 2733db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen showOnly(mWhichChild); 2743db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (hasFocus) { 2753db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen // Try to retake focus if we had it 2763db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen requestFocus(FOCUS_FORWARD); 2773db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 2783db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 2793db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 2803db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 2813db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 28244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * To be overridden by subclasses. This method applies a view / index specific 28344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * transform to the child view. 28444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * 28544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param child 28644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param relativeIndex 28744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 28844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen void applyTransformForChildAtIndex(View child, int relativeIndex) { 28944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 29044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 29144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 2923db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Returns the index of the currently displayed child view. 2933db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 2943db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public int getDisplayedChild() { 2953db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen return mWhichChild; 2963db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 2973db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 2983db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 2993db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Manually shows the next child. 3003db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 3013db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void showNext() { 3023db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setDisplayedChild(mWhichChild + 1); 3033db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 3043db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 3053db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 3063db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Manually shows the previous child. 3073db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 3083db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void showPrevious() { 3093db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setDisplayedChild(mWhichChild - 1); 3103db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 3113db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 3123db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 3133db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Shows only the specified child. The other displays Views exit the screen, 3143db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * optionally with the with the {@link #getOutAnimation() out animation} and 3153db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * the specified child enters the screen, optionally with the 3163db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * {@link #getInAnimation() in animation}. 3173db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 3183db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param childIndex The index of the child to be shown. 3193db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param animate Whether or not to use the in and out animations, defaults 3203db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * to true. 3213db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 3223db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen void showOnly(int childIndex, boolean animate) { 3233db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen showOnly(childIndex, animate, false); 3243db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 3253db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 32644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen private int modulo(int pos, int size) { 32744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return (size + (pos % size)) % size; 3283db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 3293db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 33044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen /** 33144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Get the view at this index relative to the current window's start 33244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * 33344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param relativeIndex Position relative to the current window's start 33444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @return View at this index, null if the index is outside the bounds 33544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen */ 33644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen View getViewAtRelativeIndex(int relativeIndex) { 3371b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (relativeIndex >= 0 && relativeIndex <= mNumActiveViews - 1 && mAdapter != null) { 3381b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen int adapterCount = mAdapter.getCount(); 3391b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen int i = modulo(mCurrentWindowStartUnbounded + relativeIndex, adapterCount); 3401b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen return mViewsMap.get(i).view; 34144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 34244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return null; 34344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 3443db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 3459b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen LayoutParams createOrReuseLayoutParams(View v) { 3465b53f9186e7812c93bc578d18e92cb123481fcbcRomain Guy final ViewGroup.LayoutParams currentLp = v.getLayoutParams(); 3479b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen if (currentLp instanceof ViewGroup.LayoutParams) { 348b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen LayoutParams lp = (LayoutParams) currentLp; 349b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen return lp; 35044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 3519b073948cfb84c0dd04f8a94ee1f7f263f027c83Adam Cohen return new ViewGroup.LayoutParams(0, 0); 35244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 3533db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 3546364f2bbe5254b4274f3feffc48f4259eacc205eWinson Chung void refreshChildren() { 355bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen for (int i = mCurrentWindowStart; i <= mCurrentWindowEnd; i++) { 356bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen int index = modulo(i, mNumActiveViews); 357bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen 358bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen // get the fresh child from the adapter 359bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen View updatedChild = mAdapter.getView(i, null, this); 360bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen 3611b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (mViewsMap.containsKey(index)) { 3621b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen FrameLayout fl = (FrameLayout) mViewsMap.get(index).view; 363bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen // flush out the old child 364bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen fl.removeAllViewsInLayout(); 365bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen // add the new child to the frame, if it exists 366bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen if (updatedChild != null) { 367bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen fl.addView(updatedChild); 368bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen } 369bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen } 370bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen } 371bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen } 372bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen 373dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen /** 374dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen * This method can be overridden so that subclasses can provide a custom frame in which their 375dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen * children can live. For example, StackView adds padding to its childrens' frames so as to 376dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen * accomodate for the highlight effect. 377dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen * 378dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen * @return The FrameLayout into which children can be placed. 379dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen */ 380dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen FrameLayout getFrameForChild() { 381dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen return new FrameLayout(mContext); 382dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen } 383dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen 38444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen void showOnly(int childIndex, boolean animate, boolean onLayout) { 38544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (mAdapter == null) return; 3863db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 38744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen for (int i = 0; i < mPreviousViews.size(); i++) { 3881b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen View viewToRemove = mViewsMap.get(mPreviousViews.get(i)).view; 3891b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mViewsMap.remove(mPreviousViews.get(i)); 39044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen viewToRemove.clearAnimation(); 3913d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen if (viewToRemove instanceof ViewGroup) { 3923d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen ViewGroup vg = (ViewGroup) viewToRemove; 3933d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen vg.removeAllViewsInLayout(); 3943d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen } 39544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // applyTransformForChildAtIndex here just allows for any cleanup 39644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // associated with this view that may need to be done by a subclass 39744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen applyTransformForChildAtIndex(viewToRemove, -1); 3983d07af03421f4727ef7e97c5c19e6ade50b19060Adam Cohen 39944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen removeViewInLayout(viewToRemove); 40044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 40144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mPreviousViews.clear(); 4021b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen int adapterCount = mAdapter.getCount(); 40344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int newWindowStartUnbounded = childIndex - mActiveOffset; 40444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int newWindowEndUnbounded = newWindowStartUnbounded + mNumActiveViews - 1; 40544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int newWindowStart = Math.max(0, newWindowStartUnbounded); 4061b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen int newWindowEnd = Math.min(adapterCount - 1, newWindowEndUnbounded); 40744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 4081b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (mLoopViews) { 4091b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen newWindowStart = newWindowStartUnbounded; 4101b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen newWindowEnd = newWindowEndUnbounded; 4111b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } 4121b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen int rangeStart = modulo(newWindowStart, adapterCount); 4131b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen int rangeEnd = modulo(newWindowEnd, adapterCount); 4141b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen 4151b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen boolean wrap = false; 4161b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (rangeStart > rangeEnd) { 4171b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen wrap = true; 4181b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } 4191b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen 4201b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen // This section clears out any items that are in our active views list 42144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // but are outside the effective bounds of our window (this is becomes an issue 42244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // at the extremities of the list, eg. where newWindowStartUnbounded < 0 or 42344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // newWindowEndUnbounded > mAdapter.getCount() - 1 4241b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen for (Integer index : mViewsMap.keySet()) { 4251b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen boolean remove = false; 4261b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (!wrap && (index < rangeStart || index > rangeEnd)) { 4271b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen remove = true; 4281b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } else if (wrap && (index > rangeEnd && index < rangeStart)) { 4291b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen remove = true; 4301b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } 4311b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen 4321b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (remove) { 4331b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen View previousView = mViewsMap.get(index).view; 4341b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen int oldRelativeIndex = mViewsMap.get(index).index; 4351b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen 4361b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mPreviousViews.add(index); 4371b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen animateViewForTransition(oldRelativeIndex, -1, previousView); 4383db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 43944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 4403db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 44144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // If the window has changed 4421b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (!(newWindowStart == mCurrentWindowStart && newWindowEnd == mCurrentWindowEnd)) { 44344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // Run through the indices in the new range 44444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen for (int i = newWindowStart; i <= newWindowEnd; i++) { 44544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 4461b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen int index = modulo(i, adapterCount); 4471b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen int oldRelativeIndex; 4481b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (mViewsMap.containsKey(index)) { 4491b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen oldRelativeIndex = mViewsMap.get(index).index; 4501b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } else { 4511b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen oldRelativeIndex = -1; 4521b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen } 45344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen int newRelativeIndex = i - newWindowStartUnbounded; 45444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 45544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // If this item is in the current window, great, we just need to apply 45644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // the transform for it's new relative position in the window, and animate 45744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // between it's current and new relative positions 4581b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen boolean inOldRange = mViewsMap.containsKey(index) && !mPreviousViews.contains(index); 4591b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen 4601b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen if (inOldRange) { 4611b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen View view = mViewsMap.get(index).view; 4621b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mViewsMap.get(index).index = newRelativeIndex; 46344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen applyTransformForChildAtIndex(view, newRelativeIndex); 46444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen animateViewForTransition(oldRelativeIndex, newRelativeIndex, view); 46544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 4661b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen // Otherwise this view is new to the window 46744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } else { 4681b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen // Get the new view from the adapter, add it and apply any transform / animation 4691b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen View newView = mAdapter.getView(modulo(i, adapterCount), null, this); 470bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen 471bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen // We wrap the new view in a FrameLayout so as to respect the contract 472bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen // with the adapter, that is, that we don't modify this view directly 473dfcdddd7c408dddb22fb0867e4799d4c29d2f55fAdam Cohen FrameLayout fl = getFrameForChild(); 474bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen 475bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen // If the view from the adapter is null, we still keep an empty frame in place 47644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (newView != null) { 477bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen fl.addView(newView); 47844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 4791b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mViewsMap.put(index, new ViewAndIndex(fl, newRelativeIndex)); 480bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen addChild(fl); 481bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen applyTransformForChildAtIndex(fl, newRelativeIndex); 482bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen animateViewForTransition(-1, newRelativeIndex, fl); 4833db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 4841b065cd1401253f999caa5d0ac12909407cef00eAdam Cohen mViewsMap.get(index).view.bringToFront(); 4853db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 4863db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 48744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen for (int i = 0; i < mViewsToBringToFront.size(); i++) { 48844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen View v = mViewsToBringToFront.get(i); 48944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen v.bringToFront(); 4903db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 49144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mViewsToBringToFront.clear(); 4923db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 49344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mCurrentWindowStart = newWindowStart; 49444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mCurrentWindowEnd = newWindowEnd; 49544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mCurrentWindowStartUnbounded = newWindowStartUnbounded; 49644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 49744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen 49844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mFirstTime = false; 49944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen if (!onLayout) { 50044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen requestLayout(); 50144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen invalidate(); 50244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } else { 50344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // If the Adapter tries to layout the current view when we get it using getView 50444729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // above the layout will end up being ignored since we are currently laying out, so 50544729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen // we post a delayed requestLayout and invalidate 50644729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen mMainQueue.post(new Runnable() { 50744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen @Override 50844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen public void run() { 50944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen requestLayout(); 51044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen invalidate(); 51144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen } 51244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen }); 5133db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 5143db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 5153db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 516839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private void addChild(View child) { 517839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen addViewInLayout(child, -1, createOrReuseLayoutParams(child)); 518839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 519839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // This code is used to obtain a reference width and height of a child in case we need 520839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // to decide our own size. TODO: Do we want to update the size of the child that we're 521839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // using for reference size? If so, when? 522839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (mReferenceChildWidth == -1 || mReferenceChildHeight == -1) { 523839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int measureSpec = MeasureSpec.makeMeasureSpec(0, MeasureSpec.UNSPECIFIED); 524839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen child.measure(measureSpec, measureSpec); 525839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mReferenceChildWidth = child.getMeasuredWidth(); 526839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mReferenceChildHeight = child.getMeasuredHeight(); 527839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 528839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 529839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 530839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen private void measureChildren() { 531839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int count = getChildCount(); 532839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int childWidth = mMeasuredWidth - mPaddingLeft - mPaddingRight; 533839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int childHeight = mMeasuredHeight - mPaddingTop - mPaddingBottom; 534839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 535839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen for (int i = 0; i < count; i++) { 536839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final View child = getChildAt(i); 537839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen child.measure(MeasureSpec.makeMeasureSpec(childWidth, MeasureSpec.EXACTLY), 538839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen MeasureSpec.makeMeasureSpec(childHeight, MeasureSpec.EXACTLY)); 539839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 540839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 541839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 542839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen @Override 543839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) { 544839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int widthSpecSize = MeasureSpec.getSize(widthMeasureSpec); 545839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen int heightSpecSize = MeasureSpec.getSize(heightMeasureSpec); 546839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int widthSpecMode = MeasureSpec.getMode(widthMeasureSpec); 547839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen final int heightSpecMode = MeasureSpec.getMode(heightMeasureSpec); 548839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 549839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen boolean haveChildRefSize = (mReferenceChildWidth != -1 && mReferenceChildHeight != -1); 550839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 551839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // We need to deal with the case where our parent hasn't told us how 552839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // big we should be. In this case we try to use the desired size of the first 553839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen // child added. 554839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (heightSpecMode == MeasureSpec.UNSPECIFIED) { 555839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen heightSpecSize = haveChildRefSize ? mReferenceChildHeight + mPaddingTop + 556839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingBottom : 0; 557839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else if (heightSpecMode == MeasureSpec.AT_MOST) { 558839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen heightSpecSize = haveChildRefSize ? Math.min(mReferenceChildHeight + mPaddingTop + 559839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingBottom, heightSpecSize) : 0; 560839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 561839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 562839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen if (widthSpecMode == MeasureSpec.UNSPECIFIED) { 563839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen widthSpecSize = haveChildRefSize ? mReferenceChildWidth + mPaddingLeft + 564839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingRight : 0; 565839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } else if (heightSpecMode == MeasureSpec.AT_MOST) { 566839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen widthSpecSize = haveChildRefSize ? Math.min(mReferenceChildWidth + mPaddingLeft + 567839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen mPaddingRight, widthSpecSize) : 0; 568839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 569839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 570839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen setMeasuredDimension(widthSpecSize, heightSpecSize); 571839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen measureChildren(); 572839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen } 573839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen 5743db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen @Override 5753db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen protected void onLayout(boolean changed, int left, int top, int right, int bottom) { 5763db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen boolean dataChanged = mDataChanged; 5773db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (dataChanged) { 5783db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen handleDataChanged(); 5793db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 5803db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen // if the data changes, mWhichChild might be out of the bounds of the adapter 5813db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen // in this case, we reset mWhichChild to the beginning 582bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen if (mWhichChild >= mAdapter.getCount()) { 5833db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mWhichChild = 0; 5843db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 585bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen showOnly(mWhichChild, true, true); 586bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen } 587bd0136a2fde1d81a835f94efe3193569b10d99ffAdam Cohen refreshChildren(); 5883db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 5893db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 5903db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen final int childCount = getChildCount(); 5913db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen for (int i = 0; i < childCount; i++) { 5923db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen final View child = getChildAt(i); 5933db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 5943db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen int childRight = mPaddingLeft + child.getMeasuredWidth(); 5953db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen int childBottom = mPaddingTop + child.getMeasuredHeight(); 5963db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 597839f4a54e5a6fe602dbc5998b01412d809eba722Adam Cohen child.layout(mPaddingLeft, mPaddingTop, childRight, childBottom); 5983db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 5993db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mDataChanged = false; 6003db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 6013db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 602b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen static class SavedState extends BaseSavedState { 603b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen int whichChild; 604b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 605b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen /** 606b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen * Constructor called from {@link AdapterViewAnimator#onSaveInstanceState()} 607b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen */ 608b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen SavedState(Parcelable superState, int whichChild) { 609b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen super(superState); 610b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen this.whichChild = whichChild; 611b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 612b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 613b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen /** 614b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen * Constructor called from {@link #CREATOR} 615b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen */ 616b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen private SavedState(Parcel in) { 617b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen super(in); 6183ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung this.whichChild = in.readInt(); 619b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 620b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 621b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen @Override 622b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public void writeToParcel(Parcel out, int flags) { 623b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen super.writeToParcel(out, flags); 6243ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung out.writeInt(this.whichChild); 625b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 626b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 627b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen @Override 628b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public String toString() { 6293ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return "AdapterViewAnimator.SavedState{ whichChild = " + this.whichChild + " }"; 630b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 631b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 632b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public static final Parcelable.Creator<SavedState> CREATOR 633b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen = new Parcelable.Creator<SavedState>() { 634b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public SavedState createFromParcel(Parcel in) { 635b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen return new SavedState(in); 636b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 637b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 638b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public SavedState[] newArray(int size) { 639b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen return new SavedState[size]; 640b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 641b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen }; 642b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 643b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 644b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen @Override 645b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public Parcelable onSaveInstanceState() { 646b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen Parcelable superState = super.onSaveInstanceState(); 647b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen return new SavedState(superState, mWhichChild); 648b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 649b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 650b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen @Override 651b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen public void onRestoreInstanceState(Parcelable state) { 652b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen SavedState ss = (SavedState) state; 653b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen super.onRestoreInstanceState(ss.getSuperState()); 654b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 655b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen // Here we set mWhichChild in addition to setDisplayedChild 656b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen // We do the former in case mAdapter is null, and hence setDisplayedChild won't 657b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen // set mWhichChild 658b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen mWhichChild = ss.whichChild; 659b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen setDisplayedChild(mWhichChild); 660b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen } 661b04f7ad90b7d5d5e0998e3b56960004cf56e6e8fAdam Cohen 6623db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 6633db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Shows only the specified child. The other displays Views exit the screen 6643db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * with the {@link #getOutAnimation() out animation} and the specified child 6653db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * enters the screen with the {@link #getInAnimation() in animation}. 6663db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 6673db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param childIndex The index of the child to be shown. 6683db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 6693db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen void showOnly(int childIndex) { 6703db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen final boolean animate = (!mFirstTime || mAnimateFirstTime); 6713db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen showOnly(childIndex, animate); 6723db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 6733db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 6743db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 6753db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Returns the View corresponding to the currently displayed child. 6763db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 6773db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @return The View currently displayed. 6783db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 6793db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #getDisplayedChild() 6803db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 6813db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public View getCurrentView() { 68244729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return getViewAtRelativeIndex(mActiveOffset); 6833db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 6843db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 6853db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 6863db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Returns the current animation used to animate a View that enters the screen. 6873db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 6883db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @return An Animation or null if none is set. 6893db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 6903db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #setInAnimation(android.view.animation.Animation) 6913db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #setInAnimation(android.content.Context, int) 6923db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 693ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen public ObjectAnimator<?> getInAnimation() { 6943db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen return mInAnimation; 6953db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 6963db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 6973db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 6983db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Specifies the animation used to animate a View that enters the screen. 6993db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 7003db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param inAnimation The animation started when a View enters the screen. 7013db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 7023db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #getInAnimation() 7033db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #setInAnimation(android.content.Context, int) 7043db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 705ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen public void setInAnimation(ObjectAnimator<?> inAnimation) { 7063db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mInAnimation = inAnimation; 7073db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 7083db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 7093db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 7103db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Returns the current animation used to animate a View that exits the screen. 7113db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 7123db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @return An Animation or null if none is set. 7133db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 7143db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #setOutAnimation(android.view.animation.Animation) 7153db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #setOutAnimation(android.content.Context, int) 7163db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 717ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen public ObjectAnimator<?> getOutAnimation() { 7183db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen return mOutAnimation; 7193db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 7203db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 7213db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 7223db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Specifies the animation used to animate a View that exit the screen. 7233db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 7243db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param outAnimation The animation started when a View exit the screen. 7253db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 7263db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #getOutAnimation() 7273db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #setOutAnimation(android.content.Context, int) 7283db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 729ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen public void setOutAnimation(ObjectAnimator<?> outAnimation) { 7303db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mOutAnimation = outAnimation; 7313db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 7323db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 7333db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 7343db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Specifies the animation used to animate a View that enters the screen. 7353db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 7363db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param context The application's environment. 7373db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param resourceID The resource id of the animation. 7383db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 7393db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #getInAnimation() 7403db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #setInAnimation(android.view.animation.Animation) 7413db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 7423db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void setInAnimation(Context context, int resourceID) { 743ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen setInAnimation((ObjectAnimator<?>) AnimatorInflater.loadAnimator(context, resourceID)); 7443db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 7453db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 7463db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 7473db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Specifies the animation used to animate a View that exit the screen. 7483db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 7493db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param context The application's environment. 7503db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param resourceID The resource id of the animation. 7513db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 7523db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #getOutAnimation() 7533db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @see #setOutAnimation(android.view.animation.Animation) 7543db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 7553db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void setOutAnimation(Context context, int resourceID) { 756ef52176f1244a5bb98d82a0c8c7f4351edec17a1Adam Cohen setOutAnimation((ObjectAnimator<?>) AnimatorInflater.loadAnimator(context, resourceID)); 7573db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 7583db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 7593db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 7603db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Indicates whether the current View should be animated the first time 7613db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * the ViewAnimation is displayed. 7623db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * 7633db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * @param animate True to animate the current View the first time it is displayed, 7643db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * false otherwise. 7653db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 7663db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void setAnimateFirstView(boolean animate) { 7673db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mAnimateFirstTime = animate; 7683db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 7693db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 7703db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen @Override 7713db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public int getBaseline() { 7723db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen return (getCurrentView() != null) ? getCurrentView().getBaseline() : super.getBaseline(); 7733db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 7743db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 7753db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen @Override 7763db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public Adapter getAdapter() { 7773db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen return mAdapter; 7783db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 7793db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 7803db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen @Override 7813db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void setAdapter(Adapter adapter) { 7828322834a2544a673a35c5d4ad0d5909b3ca37600Adam Cohen if (mAdapter != null && mDataSetObserver != null) { 7838322834a2544a673a35c5d4ad0d5909b3ca37600Adam Cohen mAdapter.unregisterDataSetObserver(mDataSetObserver); 7848322834a2544a673a35c5d4ad0d5909b3ca37600Adam Cohen } 7858322834a2544a673a35c5d4ad0d5909b3ca37600Adam Cohen 7863db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mAdapter = adapter; 7871480fddea874a42adb43b4bcdac6704e4c3e110bAdam Cohen checkFocus(); 7883db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 7893db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (mAdapter != null) { 7903db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mDataSetObserver = new AdapterDataSetObserver(); 7913db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mAdapter.registerDataSetObserver(mDataSetObserver); 7923db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 79344729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen setFocusable(true); 7943db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 7953db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 7963db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 79744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * Sets up this AdapterViewAnimator to use a remote views adapter which connects to a 79844729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * RemoteViewsService through the specified intent. 79944729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * 80044729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * @param intent the intent used to identify the RemoteViewsService for the adapter to 80144729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen * connect to. 8023db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 8033db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen @android.view.RemotableViewMethod 8043db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void setRemoteViewsAdapter(Intent intent) { 8059b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung // Ensure that we don't already have a RemoteViewsAdapter that is bound to an existing 8069b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung // service handling the specified intent. 8073ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (mRemoteViewsAdapter != null) { 8083ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung Intent.FilterComparison fcNew = new Intent.FilterComparison(intent); 8093ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung Intent.FilterComparison fcOld = new Intent.FilterComparison( 8103ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung mRemoteViewsAdapter.getRemoteViewsServiceIntent()); 8113ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung if (fcNew.equals(fcOld)) { 8123ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung return; 8133ec9a45c36d3ca5ffbc6e85bbeb497b065e14155Winson Chung } 8149b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung } 8159b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung 8169b3a2cf2a0a482ce8212eb2775176dd4c23e8e9aWinson Chung // Otherwise, create a new RemoteViewsAdapter for binding 8173db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mRemoteViewsAdapter = new RemoteViewsAdapter(getContext(), intent, this); 8183db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8193db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 8203db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen @Override 8213db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void setSelection(int position) { 8223db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setDisplayedChild(position); 8233db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8243db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 8253db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen @Override 8263db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public View getSelectedView() { 82744729e3d1c01265858eec566c7b7c676c46a7916Adam Cohen return getViewAtRelativeIndex(mActiveOffset); 8283db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8293db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 8303db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 8313db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Called back when the adapter connects to the RemoteViewsService. 8323db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 8333db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void onRemoteAdapterConnected() { 8343db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (mRemoteViewsAdapter != mAdapter) { 8353db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setAdapter(mRemoteViewsAdapter); 8363db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8373db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8383db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen 8393db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen /** 8403db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen * Called back when the adapter disconnects from the RemoteViewsService. 8413db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen */ 8423db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen public void onRemoteAdapterDisconnected() { 8433db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen if (mRemoteViewsAdapter != mAdapter) { 8443db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen mRemoteViewsAdapter = null; 8453db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen setAdapter(mRemoteViewsAdapter); 8463db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8473db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen } 8483db40678d33c2b5f90c380966d36b3e10ed11f05Adam Cohen} 849