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