1 /* 2 * Copyright (C) 2016 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.supportpreference; 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 SupportPreferenceDemos extends ListActivity { 37 @Override 38 public void onCreate(Bundle savedInstanceState) { 39 super.onCreate(savedInstanceState); 40 41 Intent intent = getIntent(); 42 String path = intent.getStringExtra("com.example.android.apis.Path"); 43 44 if (path == null) { 45 path = ""; 46 } 47 48 setListAdapter(new SimpleAdapter(this, getData(path), 49 android.R.layout.simple_list_item_1, new String[] { "title" }, 50 new int[] { android.R.id.text1 })); 51 getListView().setTextFilterEnabled(true); 52 } 53 54 protected List<Map<String, Object>> getData(String prefix) { 55 List<Map<String, Object>> myData = new ArrayList<>(); 56 57 Intent mainIntent = new Intent(Intent.ACTION_MAIN, null); 58 mainIntent.addCategory("com.example.android.supportpreference.SAMPLE_CODE"); 59 60 PackageManager pm = getPackageManager(); 61 List<ResolveInfo> list = pm.queryIntentActivities(mainIntent, 0); 62 63 if (null == list) 64 return myData; 65 66 String[] prefixPath; 67 String prefixWithSlash = prefix; 68 69 if (prefix.equals("")) { 70 prefixPath = null; 71 } else { 72 prefixPath = prefix.split("/"); 73 prefixWithSlash = prefix + "/"; 74 } 75 76 int len = list.size(); 77 78 Map<String, Boolean> entries = new HashMap<>(); 79 80 for (int i = 0; i < len; i++) { 81 ResolveInfo info = list.get(i); 82 CharSequence labelSeq = info.loadLabel(pm); 83 String label = labelSeq != null 84 ? labelSeq.toString() 85 : info.activityInfo.name; 86 87 if (prefixWithSlash.length() == 0 || label.startsWith(prefixWithSlash)) { 88 89 String[] labelPath = label.split("/"); 90 91 String nextLabel = prefixPath == null ? labelPath[0] : labelPath[prefixPath.length]; 92 93 if ((prefixPath != null ? prefixPath.length : 0) == labelPath.length - 1) { 94 addItem(myData, nextLabel, activityIntent( 95 info.activityInfo.applicationInfo.packageName, 96 info.activityInfo.name)); 97 } else { 98 if (entries.get(nextLabel) == null) { 99 addItem(myData, nextLabel, browseIntent( 100 prefix.equals("") ? nextLabel : prefix + "/" + nextLabel)); 101 entries.put(nextLabel, true); 102 } 103 } 104 } 105 } 106 107 Collections.sort(myData, sDisplayNameComparator); 108 109 return myData; 110 } 111 112 private final static Comparator<Map<String, Object>> sDisplayNameComparator = 113 new Comparator<Map<String, Object>>() { 114 private final Collator collator = Collator.getInstance(); 115 116 @Override 117 public int compare(Map<String, Object> map1, Map<String, Object> map2) { 118 return collator.compare(map1.get("title"), map2.get("title")); 119 } 120 }; 121 122 protected Intent activityIntent(String pkg, String componentName) { 123 Intent result = new Intent(); 124 result.setClassName(pkg, componentName); 125 return result; 126 } 127 128 protected Intent browseIntent(String path) { 129 Intent result = new Intent(); 130 result.setClass(this, SupportPreferenceDemos.class); 131 result.putExtra("com.example.android.apis.Path", path); 132 return result; 133 } 134 135 protected void addItem(List<Map<String, Object>> data, String name, Intent intent) { 136 Map<String, Object> temp = new HashMap<>(); 137 temp.put("title", name); 138 temp.put("intent", intent); 139 data.add(temp); 140 } 141 142 @Override 143 @SuppressWarnings("unchecked") 144 protected void onListItemClick(ListView l, View v, int position, long id) { 145 Map<String, Object> map = (Map<String, Object>)l.getItemAtPosition(position); 146 147 Intent intent = (Intent) map.get("intent"); 148 startActivity(intent); 149 } 150 } 151