1 /* 2 * Copyright (C) 2007 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 17 package com.example.android.apis; 18 19 import android.app.ListActivity; 20 import android.content.Intent; 21 import android.content.pm.PackageManager; 22 import android.content.pm.ResolveInfo; 23 import android.os.Bundle; 24 import android.view.View; 25 import android.widget.ListView; 26 import android.widget.SimpleAdapter; 27 28 import java.text.Collator; 29 import java.util.ArrayList; 30 import java.util.Collections; 31 import java.util.Comparator; 32 import java.util.HashMap; 33 import java.util.List; 34 import java.util.Map; 35 36 public class ApiDemos extends ListActivity { 37 38 @Override onCreate(Bundle savedInstanceState)39 public void onCreate(Bundle savedInstanceState) { 40 super.onCreate(savedInstanceState); 41 42 Intent intent = getIntent(); 43 String path = intent.getStringExtra("com.example.android.apis.Path"); 44 45 if (path == null) { 46 path = ""; 47 } 48 49 setListAdapter(new SimpleAdapter(this, getData(path), 50 android.R.layout.simple_list_item_1, new String[] { "title" }, 51 new int[] { android.R.id.text1 })); 52 getListView().setTextFilterEnabled(true); 53 } 54 getData(String prefix)55 protected List getData(String prefix) { 56 List<Map> myData = new ArrayList<Map>(); 57 58 Intent mainIntent = new Intent(Intent.ACTION_MAIN, null); 59 mainIntent.addCategory(Intent.CATEGORY_SAMPLE_CODE); 60 61 PackageManager pm = getPackageManager(); 62 List<ResolveInfo> list = pm.queryIntentActivities(mainIntent, 0); 63 64 if (null == list) 65 return myData; 66 67 String[] prefixPath; 68 69 if (prefix.equals("")) { 70 prefixPath = null; 71 } else { 72 prefixPath = prefix.split("/"); 73 } 74 75 int len = list.size(); 76 77 Map<String, Boolean> entries = new HashMap<String, Boolean>(); 78 79 for (int i = 0; i < len; i++) { 80 ResolveInfo info = list.get(i); 81 CharSequence labelSeq = info.loadLabel(pm); 82 String label = labelSeq != null 83 ? labelSeq.toString() 84 : info.activityInfo.name; 85 86 if (prefix.length() == 0 || label.startsWith(prefix)) { 87 88 String[] labelPath = label.split("/"); 89 90 String nextLabel = prefixPath == null ? labelPath[0] : labelPath[prefixPath.length]; 91 92 if ((prefixPath != null ? prefixPath.length : 0) == labelPath.length - 1) { 93 addItem(myData, nextLabel, activityIntent( 94 info.activityInfo.applicationInfo.packageName, 95 info.activityInfo.name)); 96 } else { 97 if (entries.get(nextLabel) == null) { 98 addItem(myData, nextLabel, browseIntent(prefix.equals("") ? nextLabel : prefix + "/" + nextLabel)); 99 entries.put(nextLabel, true); 100 } 101 } 102 } 103 } 104 105 Collections.sort(myData, sDisplayNameComparator); 106 107 return myData; 108 } 109 110 private final static Comparator<Map> sDisplayNameComparator = new Comparator<Map>() { 111 private final Collator collator = Collator.getInstance(); 112 113 public int compare(Map map1, Map map2) { 114 return collator.compare(map1.get("title"), map2.get("title")); 115 } 116 }; 117 activityIntent(String pkg, String componentName)118 protected Intent activityIntent(String pkg, String componentName) { 119 Intent result = new Intent(); 120 result.setClassName(pkg, componentName); 121 return result; 122 } 123 browseIntent(String path)124 protected Intent browseIntent(String path) { 125 Intent result = new Intent(); 126 result.setClass(this, ApiDemos.class); 127 result.putExtra("com.example.android.apis.Path", path); 128 return result; 129 } 130 addItem(List<Map> data, String name, Intent intent)131 protected void addItem(List<Map> data, String name, Intent intent) { 132 Map<String, Object> temp = new HashMap<String, Object>(); 133 temp.put("title", name); 134 temp.put("intent", intent); 135 data.add(temp); 136 } 137 138 @Override onListItemClick(ListView l, View v, int position, long id)139 protected void onListItemClick(ListView l, View v, int position, long id) { 140 Map map = (Map) l.getItemAtPosition(position); 141 142 Intent intent = (Intent) map.get("intent"); 143 startActivity(intent); 144 } 145 146 } 147