有什么方法可以扭转这个动画？

Question

我有这样一个布局：

我这个动画按钮linearlayouts使用此代码：

public void animation(){ 
ust.animate().x(0).y(-5000).setDuration(500).start(); //My linear layout in the top of screen.  
alt.animate().x(0).y(4000).setDuration(500).start(); //My linear layout in the bottom of screen. 
    } 

我要扭转这种动画。

我试过这种方式，但我的屏幕底部的线性布局，到顶部。

尝试这种方式：

public void animation(){ 
ust.animate().x(0).y(0).setDuration(500).start(); //My relative layout in the top of screen.  
alt.animate().x(0).y(0).setDuration(500).start(); //My relative layout in the bottom of screen. 
    } 

当我想尝试这样的事：

public void animation(){ 
ust.animate().x(0).y(0).setDuration(500).start(); //My relative layout in the top of screen.  
alt.animate().x(0).y(500).setDuration(500).start(); //My relative layout in the bottom of screen. 
    } 

“ALT”视图不来在所有设备屏幕的底部。

我想扭转此动画。我怎样才能做到这一点？

Answer 1

动画之前，请记住您的意见Y坐标，然后重新倒车时的y位置：

float ustY; 
float altY; 
public void animation(){ 
    ustY=ust.getY(); 
    ust.animate().x(0).y(-5000).setDuration(500).start(); //My linear layout in the top of screen.  
    altY=alt.getY(); 
    alt.animate().x(0).y(4000).setDuration(500).start(); //My linear layout in the bottom of screen. 
} 
public void reverseAnimation(){ 
    ust.animate().x(0).y(ustY).setDuration(500).start(); //My linear layout in the top of screen.  
    alt.animate().x(0).y(altY).setDuration(500).start(); //My linear layout in the bottom of screen. 
} 

Answer 2

假设视图原本没x或y的偏移量和通过反向你指恢复视图到原来的位置，呼叫yourView.animate（）。Y（0）.setDuration（500）。开始（）

Answer 3

这就是你给动画/过渡到布局，观点或部件

public class MainActivity extends Activity { 
Animation RL1, RL2, LR1, LR2, fadein, fadeout; 
private View view1; 

@Override 
protected void onCreate(Bundle savedInstanceState) { 
    super.onCreate(savedInstanceState); 
    setContentView(R.layout.activity_main); 
    findViewById(R.id.film1).setVisibility(View.GONE); 
    // Define all animations 
    new AnimationUtils(); 

    RL1 = AnimationUtils.loadAnimation(getApplicationContext(), 
      R.anim.slide_right_to_left_1); 
    RL2 = AnimationUtils.loadAnimation(getApplicationContext(), 
      R.anim.slide_right_to_left_2); 

    LR1 = AnimationUtils.loadAnimation(getApplicationContext(), 
      R.anim.slide_left_to_right_2); 
    LR2 = AnimationUtils.loadAnimation(getApplicationContext(), 
      R.anim.slide_left_to_right_1); 

    fadein = AnimationUtils.loadAnimation(getApplicationContext(), 
      R.anim.fadeout); 
    fadeout = AnimationUtils.loadAnimation(getApplicationContext(), 
      R.anim.fix); 
} 

// **// 

public void show(View view) { 
    findViewById(R.id.film1).setVisibility(View.VISIBLE); 
    view1 = (View) findViewById(R.id.film1); 
    view1.setAnimation(LR1); 
    view1.setAnimation(LR2); 
} 

// 

}

建立在“动画”文件夹这些XML文件，这些包含您的动画。

slide_left_to_right_1.xml

<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android" > 
<translate 
    android:duration="600" 
    android:fromXDelta="-100%" 
    android:toXDelta="0%" > 
</translate> 
</set> 

slide_left_to_right_2.xml

<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android" > 
<translate 
    android:duration="600" 
    android:fromXDelta="0%" 
    android:toXDelta="100%" > 
</translate> 
</set> 

slide_right_to_left_1.xml

<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android" > 
<translate 
    android:duration="600" 
    android:fromXDelta="100%" 
    android:toXDelta="0%" > 
</translate> 
</set> 

slide_right_to_left_2.xml

<?xml version="1.0" encoding="utf-8"?> 
<set xmlns:android="http://schemas.android.com/apk/res/android" > 
<translate 
    android:duration="600" 
    android:fromXDelta="0%" 
    android:toXDelta="-100%" > 
</translate> 
</set> 

fadeout.xml

<?xml version="1.0" encoding="utf-8"?> 
<alpha xmlns:android="http://schemas.android.com/apk/res/android" 
android:duration="800" 
android:fromAlpha="0.0" 
android:interpolator="@android:anim/accelerate_interpolator" 
android:toAlpha="1.0" /> 

fix.xml

<?xml version="1.0" encoding="utf-8"?> 
<alpha xmlns:android="http://schemas.android.com/apk/res/android" 
android:duration="800" 
android:fromAlpha="1.0" 
android:interpolator="@android:anim/accelerate_interpolator" 
android:toAlpha="0.0" />