安装：
1 final Intent intent = new Intent(Intent.ACTION_VIEW); 2 intent.setDataAndType(Uri.fromFile(new File(Environment.getExternalStorageDirectory(), APK_FILE_NAME)), 3 "application/vnd.android.package-archive"); 4 context.startActivity(intent);
卸载：
1 Uri packageURI = Uri.parse("package:com.myapp"); 2 Intent uninstallIntent = new Intent(Intent.ACTION_DELETE, packageURI); 3 context.startActivity(uninstallIntent);