new Thread(){
@Override
public void run() {
try {
Looper.prepare();
Toast.makeText(getApplicationContext(), "备份成功", 0).show();
Looper.loop();
} catch (Exception e) {
Looper.prepare();
Toast.makeText(getApplicationContext(), "备份失败", 0).show();
Looper.loop();
}
}
}.start();