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.animation; 18 19import android.app.ListActivity; 20import android.content.Intent; 21import android.content.pm.PackageManager; 22import android.content.pm.ResolveInfo; 23import android.os.Bundle; 24import android.view.View; 25import android.widget.ListView; 26import android.widget.SimpleAdapter; 27 28import java.text.Collator; 29import java.util.ArrayList; 30import java.util.Collections; 31import java.util.Comparator; 32import java.util.HashMap; 33import java.util.List; 34import java.util.Map; 35 36/** 37 * This activity lists all the activities in this application. 38 */ 39public class BrowseActivity extends ListActivity { 40 41 @Override 42 public void onCreate(Bundle savedInstanceState) { 43 super.onCreate(savedInstanceState); 44 45 Intent intent = getIntent(); 46 String path = intent.getStringExtra("com.example.androidx.dynamicanimation.animation"); 47 48 if (path == null) { 49 path = ""; 50 } 51 52 setListAdapter(new SimpleAdapter(this, getData(path), 53 android.R.layout.simple_list_item_1, new String[] { "title" }, 54 new int[] { android.R.id.text1 })); 55 getListView().setTextFilterEnabled(true); 56 } 57 58 protected List<Map<String, Object>> getData(String prefix) { 59 List<Map<String, Object>> myData = new ArrayList<Map<String, Object>>(); 60 61 Intent mainIntent = new Intent(Intent.ACTION_MAIN, null); 62 mainIntent.addCategory(Intent.CATEGORY_SAMPLE_CODE); 63 64 PackageManager pm = getPackageManager(); 65 List<ResolveInfo> list = pm.queryIntentActivities(mainIntent, 0); 66 67 if (null == list) { 68 return myData; 69 } 70 71 String[] prefixPath; 72 String prefixWithSlash = prefix; 73 74 if (prefix.equals("")) { 75 prefixPath = null; 76 } else { 77 prefixPath = prefix.split("/"); 78 prefixWithSlash = prefix + "/"; 79 } 80 81 int len = list.size(); 82 83 Map<String, Boolean> entries = new HashMap<String, Boolean>(); 84 85 for (int i = 0; i < len; i++) { 86 ResolveInfo info = list.get(i); 87 CharSequence labelSeq = info.loadLabel(pm); 88 String label = labelSeq != null ? labelSeq.toString() : info.activityInfo.name; 89 90 if (prefixWithSlash.length() == 0 || label.startsWith(prefixWithSlash)) { 91 92 String[] labelPath = label.split("/"); 93 94 String nextLabel = prefixPath == null ? labelPath[0] : labelPath[prefixPath.length]; 95 96 if ((prefixPath != null ? prefixPath.length : 0) == labelPath.length - 1) { 97 addItem(myData, nextLabel, activityIntent( 98 info.activityInfo.applicationInfo.packageName, 99 info.activityInfo.name)); 100 } else { 101 if (entries.get(nextLabel) == null) { 102 addItem(myData, nextLabel, browseIntent(prefix.equals("") 103 ? nextLabel : prefix + "/" + nextLabel)); 104 entries.put(nextLabel, true); 105 } 106 } 107 } 108 } 109 110 Collections.sort(myData, sDisplayNameComparator); 111 return myData; 112 } 113 114 private static final Comparator<Map<String, Object>> sDisplayNameComparator = 115 new Comparator<Map<String, Object>>() { 116 public final Collator collator = Collator.getInstance(); 117 118 public int compare(Map<String, Object> map1, Map<String, Object> map2) { 119 return collator.compare(map1.get("title"), map2.get("title")); 120 } 121 }; 122 123 protected Intent activityIntent(String pkg, String componentName) { 124 Intent result = new Intent(); 125 result.setClassName(pkg, componentName); 126 return result; 127 } 128 129 protected Intent browseIntent(String path) { 130 Intent result = new Intent(); 131 result.setClass(this, BrowseActivity.class); 132 result.putExtra("com.example.androidx.dynamicanimation.animation", path); 133 return result; 134 } 135 136 protected void addItem(List<Map<String, Object>> data, String name, Intent intent) { 137 Map<String, Object> temp = new HashMap<String, Object>(); 138 temp.put("title", name); 139 temp.put("intent", intent); 140 data.add(temp); 141 } 142 143 @Override 144 @SuppressWarnings("unchecked") 145 protected void onListItemClick(ListView l, View v, int position, long id) { 146 Map<String, Object> map = (Map<String, Object>) l.getItemAtPosition(position); 147 148 Intent intent = new Intent((Intent) map.get("intent")); 149 intent.addCategory(Intent.CATEGORY_SAMPLE_CODE); 150 startActivity(intent); 151 } 152} 153 154 155