ListViewAddRemove.java revision e0c37bdea37f78778f6c4f23f03604e59dfb0d55 
1/*
2 * Copyright (C) 2013 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 */
16package com.android.transitiontests;
17
18import android.app.Activity;
19import android.content.Context;
20import android.os.Bundle;
21import android.view.View;
22import android.view.ViewTreeObserver;
23import android.transition.Fade;
24import android.transition.Scene;
25import android.widget.AdapterView;
26import android.widget.ArrayAdapter;
27import android.widget.LinearLayout;
28import android.widget.ListView;
29import android.widget.TextView;
30import android.transition.AutoTransition;
31import android.transition.ChangeBounds;
32import android.transition.Transition;
33import android.transition.TransitionListenerAdapter;
34import android.transition.TransitionManager;
35import android.transition.TransitionSet;
36
37import java.util.ArrayList;
38import java.util.HashMap;
39import java.util.List;
40
41public class ListViewAddRemove extends Activity {
42
43    final ArrayList<String> numList = new ArrayList<String>();
44
45    @Override
46    public void onCreate(Bundle savedInstanceState) {
47        super.onCreate(savedInstanceState);
48        setContentView(R.layout.list_view_add_remove);
49
50        final LinearLayout container = (LinearLayout) findViewById(R.id.container);
51
52        final ListView listview = (ListView) findViewById(R.id.listview);
53        for (int i = 0; i < 200; ++i) {
54            numList.add(Integer.toString(i));
55        }
56        final StableArrayAdapter adapter = new StableArrayAdapter(this,
57                android.R.layout.simple_list_item_1, numList);
58        listview.setAdapter(adapter);
59
60        final ViewTreeObserver observer = container.getViewTreeObserver();
61        observer.addOnGlobalLayoutListener(new ViewTreeObserver.OnGlobalLayoutListener() {
62            public void onGlobalLayout() {
63                System.out.println("-------------------------------------");
64                System.out.println("onLayoutListener: listview view tops: ");
65                for (int i = 0; i < listview.getChildCount(); ++i) {
66                    TextView view = (TextView) listview.getChildAt(i);
67                    System.out.println("    " + view.getText() + ": " + view.getTop());
68                }
69            }
70        });
71
72        final Scene mySceneChanger = new Scene(listview);
73
74        mySceneChanger.setEnterAction(new Runnable() {
75            @Override
76            public void run() {
77                numList.remove(mItemToDelete);
78                adapter.notifyDataSetChanged();
79            }
80        });
81        final Transition myTransition = new AutoTransition();
82        final TransitionSet noFadeIn = new TransitionSet().
83                setOrdering(TransitionSet.ORDERING_SEQUENTIAL);
84        Fade fadeIn = new Fade(Fade.IN);
85        fadeIn.setDuration(50);
86        noFadeIn.addTransition(new Fade(Fade.OUT)).addTransition(new ChangeBounds()).addTransition(fadeIn);
87
88        myTransition.addListener(new TransitionListenerAdapter() {
89            @Override
90            public void onTransitionStart(Transition transition) {
91                System.out.println("---------ListView Tops: Before--------");
92                for (int i = 0; i < listview.getChildCount(); ++i) {
93                    TextView view = (TextView) listview.getChildAt(i);
94                    int position = listview.getPositionForView(view);
95                }
96            }
97
98            @Override
99            public void onTransitionEnd(Transition transition) {
100                System.out.println("---------ListView Tops: After--------");
101                for (int i = 0; i < listview.getChildCount(); ++i) {
102                    TextView view = (TextView) listview.getChildAt(i);
103                    int position = listview.getPositionForView(view);
104                    if (view.hasTransientState()) {
105//                        view.setHasTransientState(false);
106                    }
107                }
108                myTransition.removeListener(this);
109            }
110        });
111
112        listview.setOnItemClickListener(new AdapterView.OnItemClickListener() {
113
114            @Override
115            public void onItemClick(AdapterView<?> parent, final View view, int position, long id) {
116                System.out.println("---------ListView Tops: OnClick--------");
117                String item = (String) parent.getItemAtPosition(position);
118                for (int i = 0; i < listview.getChildCount(); ++i) {
119                    TextView v = (TextView) listview.getChildAt(i);
120                    if (!item.equals(v.getText())) {
121//                        v.setHasTransientState(true);
122                    }
123                }
124//                listview.setHasTransientState(true);
125                mItemToDelete = item;
126//                numList.remove(item);
127                TransitionManager.go(mySceneChanger, noFadeIn);
128//                view.postDelayed(new Runnable() {
129//                    @Override
130//                    public void run() {
131//                        for (int i = 0; i < listview.getChildCount(); ++i) {
132//                            TextView v = (TextView) listview.getChildAt(i);
133//                            v.setHasTransientState(false);
134//                        }
135//                    }
136//                }, 200);
137            }
138
139        });
140    }
141
142    String mItemToDelete = null;
143
144    private class StableArrayAdapter extends ArrayAdapter<String> {
145
146        HashMap<String, Integer> mIdMap = new HashMap<String, Integer>();
147
148        public StableArrayAdapter(Context context, int textViewResourceId,
149                List<String> objects) {
150            super(context, textViewResourceId, objects);
151            for (int i = 0; i < objects.size(); ++i) {
152                mIdMap.put(objects.get(i), i);
153            }
154        }
155
156        @Override
157        public long getItemId(int position) {
158            String item = getItem(position);
159            return mIdMap.get(item);
160        }
161
162        @Override
163        public boolean hasStableIds() {
164            return true;
165        }
166
167    }
168}
169