进入程序、分享、卸载

 1              case R.id.ll_start:  /** 进入程序 */ 
 2             try {
 3                 // 获取所有的包信息
 4                 PackageInfo info = getPackageManager().getPackageInfo(
 5                         packname,
 6                         PackageManager.GET_UNINSTALLED_PACKAGES
 7                                 | PackageManager.GET_ACTIVITIES);
 8                 // 获取所有的activity
 9                 ActivityInfo[] activityinfos = info.activities;
10                 // 因为有些是系统activity所以打不开，得判断下
11                 if (activityinfos.length > 0) {
12                     // 第一个activity具备启动的能力,用第一个activity打开
13                     ActivityInfo startActivity = activityinfos[0];
14                     Intent intent = new Intent();
15                     intent.setClassName(app.getPackname(), startActivity.name);
16                     startActivity(intent);
17                 } else {
18                     Toast.makeText(this, "当前应用程序无法启动", 0).show();
19                 }
20             } catch (NameNotFoundException e) {
21                 Toast.makeText(this, "应用程序无法启动", 0).show();
22                 e.printStackTrace();
23             }
24             break;
25         // 分享程序
26         case R.id.ll_shape:  /** 分享 */
27             Intent shareIntent = new Intent();
28             shareIntent.setAction(Intent.ACTION_SEND);
29             shareIntent.setType("text/plain");
30             shareIntent.putExtra(Intent.EXTRA_SUBJECT, "分享");
31             shareIntent.putExtra(Intent.EXTRA_TEXT, "推荐你使用一个程序" + packname);
32             shareIntent = Intent.createChooser(shareIntent, "分享");
33             startActivity(shareIntent);
34             break;
35         case R.id.ll_uninstall:   /** 卸载 */
36             if (app.isSystemApp()) {
37                 Toast.makeText(this, "系统应用不能被删除", 1).show();
38             } else {
39                 if (!packname.equals(getPackageName())) {
40                     String uristr = "package:" + packname;
41                     Uri uri = Uri.parse(uristr);
42                     Intent deleteIntent = new Intent();
43                     deleteIntent.setAction(Intent.ACTION_DELETE);
44                     deleteIntent.setData(uri);
45                     startActivityForResult(deleteIntent, 0);
46                     return;
47                 } else {
48                     Toast.makeText(this, "不能卸载自己", 1).show();
49                     return;
50                 }
51 
52             }
53             break;