[英]Android Animation Repeating
我有三个具有相同翻译动画的视图。 使用0-2之间的随机数,可以对三个视图之一进行动画处理。 我在重复动画和每个动画的延迟方面遇到麻烦(应该在2000ms左右)。
Animation move = AnimationUtils.loadAnimation(this, R.anim.move);
View view1 = (View) findViewById(R.id.view1);
View view2 = (View) findViewById(R.id.view2);
View view3 = (View) findViewById(R.id.view3);
Random color_box_fall_random = new Random();
int random_int = (color_box_fall_random.nextInt(2));
for (int i = 0; i < 10; i++){
if (random_int == 0){
view1.startAnimation(move);
}
else if (random_int == 1){
view2.startAnimation(move);
}
else{
view3.startAnimation(move);
}
}
move.xml
<?xml version="1.0" encoding="utf-8"?>
<set
xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="@android:anim/linear_interpolator">
<translate
android:startOffset="2000"
android:fromYDelta="-200"
android:toYDelta="50%p"
android:duration="2000" />
</set>
结束之后,您需要使用AnimationListener
来开始下一个动画。 您可以延迟2秒发布可运行对象,以获取延迟。
Animation move;
View view1;
View view2;
View view3;
Random color_box_fall_random;
int i;
Handler handler;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
move = AnimationUtils.loadAnimation(this, R.anim.move);
view1 = findViewById(R.id.view1);
view2 = findViewById(R.id.view2);
view3 = findViewById(R.id.view3);
color_box_fall_random = new Random();
handler = new Handler();
move.setAnimationListener(new Animation.AnimationListener() {
@Override
public void onAnimationStart(Animation animation) {
}
@Override
public void onAnimationEnd(Animation animation) {
i++;
if(i < 10) {
handler.postDelayed(new Runnable() {
@Override
public void run() {
switch(color_box_fall_random.nextInt(2)){
case 0:
view1.startAnimation(move);
break;
case 1:
view2.startAnimation(move);
break;
case 2:
view3.startAnimation(move);
break;
}
}
}, 2000);
}
}
@Override
public void onAnimationRepeat(Animation animation) {
}
});
switch(color_box_fall_random.nextInt(2)){
case 0:
view1.startAnimation(move);
break;
case 1:
view2.startAnimation(move);
break;
case 2:
view3.startAnimation(move);
break;
}
}
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