Question

我已经用于动画的2个图像视图，我希望这两个动画之间有延迟。以下是MainActivity.java

public class MainActivity extends AppCompatActivity {

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        faded();
        faded2();
    }
    public void faded()
    {
        ImageView img=(ImageView)findViewById(R.id.imageView2);
        img.setBackgroundResource(R.drawable.fade);
        AnimationDrawable ani=(AnimationDrawable)img.getBackground();
        ani.start();
    }
    public void faded2()
    {
        ImageView img=(ImageView)findViewById(R.id.imageView3);
        img.setBackgroundResource(R.drawable.fade2);
        AnimationDrawable ani=(AnimationDrawable)img.getBackground();
        ani.start();
    }
}

the above code starts both the animation at same time.
what should i do in order to get a delay between these two?

我应该做些什么改变来获得理想的结果？

Answer 1

如果您希望淡入ImageViews，可以使用

//Initially set the alpha to 0 so we can't see it
img1.setAlpha(0.0f);
img2.setAlpha(0.0f);

//Then call the animate() on them. Note the startDelay for the second.
img1.animate().alpha(1.0f).setDuration(300).start();
img2.animate().alpha(1.0f).setDuration(300).setStartDelay(200).start();

如何在android studio中的两帧动画之间添加延迟？

1 个答案: