警报对话框会在很短的时间后发生

Question

我在我的应用程序中显示警报对话框，只有按下返回按钮才会显示  我可以在短时间内制作它，然后它会自动像Toast一样

Answer 1

希望这段代码有用！ ;）更新

public class MainActivity extends AppCompatActivity {

    AlertDialog ad;
    AlertDialog.Builder adb;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

        adb = new AlertDialog.Builder(MainActivity.this);
        adb.setTitle("TITLE");
        adb.setMessage("MSG");
        ad = adb.create();
        ad.show();


        new CountDownTimer(3000, 1000) {
            @Override
            public void onTick(long millisUntilFinished) {
            }

            @Override
            public void onFinish() {

                ad.dismiss();

                Toast.makeText(MainActivity.this,"YourToast",
                        Toast.LENGTH_SHORT).show();
            }
        }.start();

    }
}