Android 获得所有应用程序包
本文转载自：http://blog.sina.com.cn/s/blog_3e333c4a01015v3e.html
1 推荐方法 2 1、全部程序包 3 private void queryFilterAppInfo() { 4 PackageManager pm = this.getPackageManager(); 5 // 查询所有已经安装的应用程序 6 List<ApplicationInfo> listAppcations = pm.getInstalledApplications(PackageManager.GET_UNINSTALLED_PACKAGES);// GET_UNINSTALLED_PACKAGES代表已删除，但还有安装目录的 7 for (ApplicationInfo app : listAppcations) { 8 AppInfo appInfo = new AppInfo(); 9 appInfo.setAppLabel((String) app.loadLabel(pm)); 10 appInfo.setAppIcon(app.loadIcon(pm)); 11 appInfo.setPkgName(app.packageName); 12 mlistAppInfo.add(appInfo); 13 } 14 } 15 16 2、 获得所有系统的 17 public void querySysAppInfo() { 18 PackageManager pm = this.getPackageManager(); 19 Intent intent = new Intent(Intent.ACTION_MAIN, null); 20 intent.addCategory(Intent.CATEGORY_LAUNCHER); 21 // 通过查询，获得所有ResolveInfo对象. 22 List<ResolveInfo> resolveInfos = pm.queryIntentActivities(intent, PackageManager.MATCH_DEFAULT_ONLY); 23 24 for (ResolveInfo reInfo : resolveInfos) { 25 String activityName = reInfo.activityInfo.name; // 获得该应用程序的启动Activity的name 26 String pkgName = reInfo.activityInfo.packageName; // 获得应用程序的包名 27 String appLabel = (String) reInfo.loadLabel(pm); // 获得应用程序的Label 28 Drawable icon = reInfo.loadIcon(pm); // 获得应用程序图标 29 System.out.println(appLabel + " activityName---" + activityName + " pkgName---" + pkgName); 30 } 31 } 32 33 34 3、 最简单的方法 35 public boolean appIsInstalled(String packageName){ 36 try { 37 PackageManager pm = this.getPackageManager(); 38 pm.getPackageInfo(packageName, PackageManager.GET_ACTIVITIES); 39 System.out.println("已安装"+packageName); 40 } catch (NameNotFoundException e) { 41 System.out.println("没有安装"+packageName); 42 return false; 43 } 44 return true; 45 } 46 47 48 4、获得所有包信息 49 public void getInstallPackage() { 50 PackageManager packageManager = this.getPackageManager(); 51 List<PackageInfo> packageInfoList=packageManager.getInstalledPackages(0); 52 mlistAppInfo.clear(); 53 for (int i=0;i<packageInfoList.size();i++) { 54 PackageInfo pi = packageInfoList.get(i); 55 System.out.println((i+1)+":"+pi.toString()); 56 } 57 } 58 5、直接启动方法 59 public void srartApp(String packageName){ 60 Intent intent = this.getPackageManager().getLaunchIntentForPackage(packageName); 61 if(intent!=null) 62 startActivity(intent); //已安装包 直接启动 63 }
