1/* 2 * Copyright (C) 2017 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17package com.example.android.support.transition.widget; 18 19import android.os.Bundle; 20import android.view.View; 21import android.widget.FrameLayout; 22import android.widget.ImageView; 23 24import androidx.transition.ChangeImageTransform; 25import androidx.transition.ChangeTransform; 26import androidx.transition.TransitionManager; 27import androidx.transition.TransitionSet; 28 29import com.example.android.support.transition.R; 30 31/** 32 * Demonstrates combination usage of ChangeTransform and ChangeImageTransform. 33 */ 34public class ReparentImageUsage extends TransitionUsageBase { 35 36 FrameLayout mOuterFrame; 37 FrameLayout mInnerFrame; 38 TransitionSet mTransition; 39 int mPhotoSize; 40 41 @Override 42 int getLayoutResId() { 43 return R.layout.reparent_image; 44 } 45 46 @Override 47 protected void onCreate(Bundle savedInstanceState) { 48 super.onCreate(savedInstanceState); 49 mOuterFrame = findViewById(R.id.outer_frame); 50 mInnerFrame = findViewById(R.id.inner_frame); 51 mPhotoSize = getResources().getDimensionPixelSize(R.dimen.photo_size); 52 53 mTransition = new TransitionSet(); 54 mTransition.addTransition(new ChangeImageTransform()); 55 mTransition.addTransition(new ChangeTransform()); 56 57 addImageView(mOuterFrame, ImageView.ScaleType.CENTER_CROP, mPhotoSize); 58 findViewById(R.id.toggle).setOnClickListener(new View.OnClickListener() { 59 @Override 60 public void onClick(View v) { 61 TransitionManager.beginDelayedTransition(mOuterFrame, mTransition); 62 if (mInnerFrame.getChildCount() > 0) { 63 mInnerFrame.removeAllViews(); 64 addImageView(mOuterFrame, ImageView.ScaleType.CENTER_CROP, mPhotoSize); 65 } else { 66 mOuterFrame.removeViewAt(1); 67 addImageView(mInnerFrame, ImageView.ScaleType.FIT_XY, 68 FrameLayout.LayoutParams.MATCH_PARENT); 69 } 70 } 71 }); 72 } 73 74 private void addImageView(FrameLayout parent, ImageView.ScaleType scaleType, int size) { 75 final ImageView photo = new ImageView(this); 76 photo.setImageResource(R.drawable.photo); 77 photo.setId(R.id.photo); 78 photo.setScaleType(scaleType); 79 FrameLayout.LayoutParams lp = new FrameLayout.LayoutParams(size, size); 80 parent.addView(photo, lp); 81 } 82 83} 84