android如何在单个 Activity 中添加两个倒数计时器？

Question

我正在使用两个 imageview win，我想使用两个倒数计时器。 1 个计时器在 1000 毫秒显示 1 个图像，之后另一个倒计时开始并显示 2 个图像，在第二个图像进入另一个屏幕后，但我已经将它与单个倒计时计时器一起使用。我如何在类里面使用 2 个倒数计时器？这是我的代码:

public class MainActivity extends Activity {
    private ImageView image1,image2;
    CountDownTimer countdown1,countdown2;
    int a = 0; 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.aaa);

        image1=(ImageView)findViewById(R.id.image1); 
        image2=(ImageView)findViewById(R.id.image2); 

        image1=(ImageView)findViewById(R.id.image1); 
        image2=(ImageView)findViewById(R.id.image2); 
        image1.setVisibility(View.VISIBLE); 
        image2.setVisibility(View.INVISIBLE); 

        new CountDownTimer(3000, 1000) { 


            public void onTick(long millisUntilFinished) { 


                if(a == 0) 
                { 
                    image1.setVisibility(View.VISIBLE); 
                    image2.setVisibility(View.INVISIBLE); 
                } 
                else { 

                } a++; 

            } 

            public void onFinish() { 

                image2.setVisibility(View.VISIBLE); 
                image1.setVisibility(View.VISIBLE); 
                Intent i=new Intent(MainActivity.this,NextActivity.class);
                startActivity(i);
            } 
        }.start();



    }
}

Answer 1

我不确定我是否理解这个请求，但我会尝试这样的事情:

public class MainActivity extends Activity {
    private ImageView image1,image2;
    int a = 0; 
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.aaa);

        image1=(ImageView)findViewById(R.id.image1); 
        image2=(ImageView)findViewById(R.id.image2); 
        image1.setVisibility(View.VISIBLE); 
        image2.setVisibility(View.INVISIBLE); 

        new CountDownTimer(4000, 1000) { 
            public void onTick(long millisUntilFinished) { 
                if(a == 0) { 
                    image1.setVisibility(View.VISIBLE); 
                } else if(a == 1) { 
                    image1.setVisibility(View.INVISIBLE); 
                    image2.setVisibility(View.VISIBLE); 
                }
                a++; 
            } 
            public void onFinish() { 
                Intent i=new Intent(MainActivity.this,NextActivity.class);
                startActivity(i);
            } 
        }.start();
    }
}