Question

嗨，我是Android动画的新手，我有章鱼的形象，在布局中通过XML动画来移动我有两个不同国家的国旗图像，一面旗帜就在旁边，一面留在一边，现在我想在旗帜的一侧自动移动章鱼，每次移动时间会有所不同意味着一些时间运动将在左侧，一些时间运动现在右边我怎么能这样做，任何人都可以给出好主意。下面是我的代码.............动画的XML代码

<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:fillAfter="true"
android:interpolator="@android:anim/linear_interpolator" >

<!-- Use startOffset to give delay between animations -->


<!-- Move -->
<translate
    android:duration="2500"
    android:fillAfter="true"
    android:fromXDelta="0%p"
    android:startOffset="300"
    android:toXDelta="25%p" />
<translate
    android:duration="2500"
    android:fillAfter="true"
    android:fromYDelta="0%p"
    android:startOffset="2800"
    android:toYDelta="50%p" />
<translate
    android:duration="2500"
    android:fillAfter="true"
    android:fromXDelta="0%p"
    android:startOffset="5300"
    android:toXDelta="-25%p" />
<translate
    android:duration="2500"
    android:fillAfter="true"
    android:fromYDelta="0%p"
    android:startOffset="7800"
    android:toYDelta="-50%p" />

<!-- Rotate 360 degrees -->
<rotate
    android:duration="2000"
    android:fromDegrees="0"
    android:interpolator="@android:anim/cycle_interpolator"
    android:pivotX="25%"
    android:pivotY="50%"
    android:startOffset="10300"
    android:repeatMode="restart"
    android:toDegrees="180" />

</set>

这是访问该文件的java代码

Animation fadein_anim;
ImageView animimagej, imageView;// imageView Button and animimagej is octopus image 
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
animimagej = (ImageView) findViewById(R.id.animimage);
    imageView = (ImageView) findViewById(R.id.iv);
fadein_anim = AnimationUtils.loadAnimation(getApplicationContext(),
            R.animator.sequence);
    fadein_anim.setAnimationListener(this);
    imageView.setOnClickListener(new View.OnClickListener() {

        @Override
        public void onClick(View v) {
            // TODO Auto-generated method stub
            animimagej.setVisibility(View.VISIBLE);

            animimagej.startAnimation(fadein_anim);

        }
    });
}
public void onAnimationEnd(Animation animation) {
    // TODO Auto-generated method stub
}

@Override
public void onAnimationRepeat(Animation animation) {
    // TODO Auto-generated method stub

}

@Override
public void onAnimationStart(Animation animation) {
    // TODO Auto-generated method stub

}
 }

Answer 1

您需要定义随机类的对象并在此对象的帮助下生成随机数，如下所示

Random a = new Random();
    int b = a.nextInt(5 - 1) + 1;<-------------- generating random number
    switch (b) {
    case 1:

        start.youranimationhere()
        break;

    case 2:


        start.youranimation2here()
        break;
        break;
    case 3:
          //do your job for all case that you declare variable b above

在左侧或右侧android上动态移动动画

1 个答案: