android获取系统安装程序.doc

/blog/1159527PackageManager是个非常好的东西，其他的详细的细节等日后有时间整理PackageManager的功能：安装，卸载应用查询permission相关信息查询Application相关信息(application，activity，receiver，service，provider及相应属性等）查询已安装应用增加，删除permission清除用户数据、缓存，代码段等我们可以用PackageManager来显示系统安装的应用程序列表或者系统程序列表。注意了，这并不是获取当前的运行中的程序。废话先不多说AppShowActivity.java Java代码 1. packagecom.loulijun.appshow; 2. 3. importjava.util.ArrayList; 4. importjava.util.HashMap; 5. importjava.util.List; 6. importjava.util.Map; 7. 8. importandroid.app.Activity; 9. importandroid.content.Context; 10. importandroid.content.pm.ApplicationInfo; 11. importandroid.content.pm.PackageInfo; 12. importandroid.content.pm.PackageManager; 13. importandroid.graphics.drawable.Drawable; 14. importandroid.os.Bundle; 15. importandroid.view.LayoutInflater; 16. importandroid.view.View; 17. importandroid.view.ViewGroup; 18. importandroid.widget.ImageView; 19. importandroid.widget.ListView; 20. importandroid.widget.SimpleAdapter; 21. importandroid.widget.TextView; 22. 23. publicclassAppShowActivityextendsActivity 24. ListViewlv; 25. MyAdapteradapter; 26. ArrayListHashMapitems=newArrayListHashMap(); 27. 28. Override29. publicvoidonCreate(BundlesavedInstanceState) 30. super.onCreate(savedInstanceState); 31. setContentView(R.layout.main); 32. 33. lv=(ListView)findViewById(R.id.lv); 34. /得到PackageManager对象 35. PackageManagerpm=getPackageManager(); 36. /得到系统安装的所有程序包的PackageInfo对象 37. /Listpacks=pm.getInstalledApplications(0); 38. Listpacks=pm.getInstalledPackages(0); 39. 40. for(PackageInfopi:packs) 41. 42. HashMapmap=newHashMap(); 43. /显示用户安装的应用程序，而不显示系统程序 44. /if(pi.applicationInfo.flags&ApplicationInfo.FLAG_SYSTEM)=0& 45. /(pi.applicationInfo.flags&ApplicationInfo.FLAG_UPDATED_SYSTEM_APP)=0) 46. / 47. /这将会显示所有安装的应用程序，包括系统应用程序 48. /map.put(icon,pi.applicationInfo.loadIcon(pm);/图标 49. /map.put(appName,pi.applicationInfo.loadLabel(pm);/应用程序名称 50. /map.put(packageName,pi.applicationInfo.packageName);/应用程序包名 51. /循环读取并存到HashMap中，再增加到ArrayList上，一个HashMap就是一项 52. /items.add(map); 53. / /我想请问：这个上下有区别呀？54. /这将会显示所有安装的应用程序，包括系统应用程序 55. map.put(icon,pi.applicationInfo.loadIcon(pm);/图标 56. map.put(appName,pi.applicationInfo.loadLabel(pm);/应用程序名称 57. map.put(packageName,pi.applicationInfo.packageName);/应用程序包名 58. /循环读取并存到HashMap中，再增加到ArrayList上，一个HashMap就是一项 59. items.add(map); 60. 61. /* 62. *参数：Context 63. *ArrayList(item的集合) 64. *item的layout 65. *包含ArrayList中的HashMap的key的数组 66. *key所对应的值的相应的控件id 67. */68. adapter=newMyAdapter(this,items,R.layout.piitem, 69. newStringicon,appName,packageName, 70. newintR.id.icon,R.id.appName,R.id.packageName); 71. lv.setAdapter(adapter); 72. 73. 74. 75. classMyAdapterextendsSimpleAdapter 76. 77. privateintappTo; 78. privateStringappFrom; 79. privateViewBinderappViewBinder; 80. privateList?extendsMapappData; 81. privateintappResource; 82. privateLayoutInflaterappInflater; 83. 84. publicMyAdapter(Contextcontext,List?extendsMapdata, 85. intresource,Stringfrom,intto) 86. super(context,data,resource,from,to); 87. appData=data; 88. appResource=resource; 89. appFrom=from; 90. appTo=to; 91. appInflater=(LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 92. 93. 94. publicViewgetView(intposition,ViewconvertView,ViewGroupparent) 95. 96. returncreateViewFromResource(position,convertView,parent,appResource); 97. 98. 99. 100. privateViewcreateViewFromResource(intposition,ViewconvertView,ViewGroupparent,intresource) 101. 102. Viewv; 103. if(convertView=null) 104. 105. v=appInflater.inflate(resource,parent,false); 106. finalintto=appTo; 107. finalintcount=to.length; 108. finalViewholder=newViewcount; 109. 110. for(inti=0;icount;i+) 111. 112. holderi=v.findViewById(toi); 113. 114. v.setTag(holder); 115. else116. 117. v=convertView; 118. 119. bindView(position,v); 120. returnv; 121. 122. 123. privatevoidbindView(intposition,Viewview) 124. 125. finalMapdataSet=appData.get(position); 126. if(dataSet=null) 127. 128. return; 129. 130. 131. finalViewBinderbinder=appViewBinder; 132. finalViewholder=(View)view.getTag(); 133. finalStringfrom=appFrom; 134. finalintto=appTo; 135. finalintcount=to.length; 136. 137. for(inti=0;icount;i+) 138. 139. finalViewv=holderi; 140. if(v!=null) 141. 142. finalObjectdata=dataSet.get(fromi); 143. Stringtext=data=null?:data.toString(); 144. if(text=null) 145. 146. text=; 147. 148. 149. booleanbound=false; 150. if(binder!=null) 151. 152. bound=binder.setViewValue(v,data,text); 153. 154. 155. if(!bound) 156. 157. /* 158. *自定义适配器，关键在这里，根据传递过来的控件以及值的数据类型， 159. *执行相应的方法，可以根据自己需要自行添加if语句。另外，CheckBox等 160. *集成自TextView的控件也会被识别成TextView，这就需要判断值的类型 161. */162. if(vinstanceofTextView) 163. 164. /如果是TextView控件，则调用SimpleAdapter自带的方法，设置文本 165. setViewText(TextView)v,text); 166. elseif(vinstanceofImageView) 167. 168. /如果是ImageView控件，调用自己写的方法，设置图片 169. setViewImage(ImageView)v,(Drawable)data); 170. else171. 172. thrownewIllegalStateException(v.getClass().getName()+isnota+ 173. viewthatcanbeboundsbythisSimpleAdapter); 174. 175. 176. 177. 178. 179. publicvoidsetViewImage(ImageViewv,Drawablevalue) 180. 181. v.setImageDrawable(value); 182. 183. package com.loulijun.appshow;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;import android.app.Activity;import android.content.Context;import android.content.pm.ApplicationInfo;import android.content.pm.PackageInfo;import android.content.pm.PackageManager;import android.graphics.drawable.Drawable;import android.os.Bundle;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.ImageView;import android.widget.ListView;import android.widget.SimpleAdapter;import android.widget.TextView;public class AppShowActivity extends Activity ListView lv; MyAdapter adapter; ArrayListHashMap items = new ArrayListHashMap(); Override public void onCreate(Bundle savedInstanceState) super.onCreate(savedInstanceState); setContentView(R.layout.main); lv = (ListView)findViewById(R.id.lv); /得到PackageManager对象 PackageManager pm = getPackageManager(); /得到系统安装的所有程序包的PackageInfo对象 /List packs = pm.getInstalledApplications(0); List packs = pm.getInstalledPackages(0); for(PackageInfo pi:packs) HashMap map = new HashMap(); /显示用户安装的应用程序，而不显示系统程序/ if(pi.applicationInfo.flags&ApplicationInfo.FLAG_SYSTEM)=0&/ (pi.applicationInfo.flags&ApplicationInfo.FLAG_UPDATED_SYSTEM_APP)=0)/ / /这将会显示所有安装的应用程序，包括系统应用程序/ map.put(icon, pi.applicationInfo.loadIcon(pm);/图标/ map.put(appName, pi.applicationInfo.loadLabel(pm);/应用程序名称/ map.put(packageName, pi.applicationInfo.packageName);/应用程序包名/ /循环读取并存到HashMap中，再增加到ArrayList上，一个HashMap就是一项/ items.add(map);/ /这将会显示所有安装的应用程序，包括系统应用程序 map.put(icon, pi.applicationInfo.loadIcon(pm);/图标 map.put(appName, pi.applicationInfo.loadLabel(pm);/应用程序名称 map.put(packageName, pi.applicationInfo.packageName);/应用程序包名 /循环读取并存到HashMap中，再增加到ArrayList上，一个HashMap就是一项 items.add(map); /* * 参数：Context * ArrayList(item的集合) * item的layout * 包含ArrayList中的HashMap的key的数组 * key所对应的值的相应的控件id */ adapter = new MyAdapter(this, items, R.layout.piitem, new Stringicon, appName, packageName, new intR.id.icon, R.id.appName, R.id.packageName); lv.setAdapter(adapter); class MyAdapter extends SimpleAdapterprivate int appTo;private String appFrom;private ViewBinder appViewBinder;private List? extends Map appData;private int appResource;private LayoutInflater appInflater;public MyAdapter(Context context, List? extends Map data,int resource, String from, int to) super(context, data, resource, from, to);appData = data;appResource = resource;appFrom = from;appTo = to;appInflater = (LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);public View getView(int position, View convertView, ViewGroup parent)return createViewFromResource(position, convertView, parent, appResource);private View createViewFromResource(int position, View convertView, ViewGroup parent, int resource)View v;if(convertView = null)v = appInflater.inflate(resource, parent,false);final int to = appTo;final int count = to.length;final View holder = new Viewcount;for(int i = 0; i count; i+)holderi = v.findViewById(toi);v.setTag(holder);elsev = convertView;bindView(position, v);return v;private void bindView(int position, View view)final Map dataSet = appData.get(position);if(dataSet = null)return;final ViewBinder binder = appViewBinder;final View holder = (View)view.getTag();final String from = appFrom;final int to = appTo;final int count =