blocks|key|3217083|text|尝试将代码添加到循环线程或while/for语句中|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3217084|entityMap^0|0^^$0|@$1|2|3|4|5|6|7|D|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|E|8|@]|9|@]|A|$]]]|C|$]]

Try to add the code to a looping thread or a while/for statement

blocks|key|3003663|text|我发现标签在AnimationSet类中有错误的实现。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|3003664|它无法正确处理repeatCount。|3003665|我们能做的-是直接在标签中设置repeatCount。|3003666|此XML资源运行良好：|3003667|<?xml+version="1.0"+encoding="utf-8"?>
<scale
++++xmlns:android="http://schemas.android.com/apk/res/android"
++++android:interpolator="@android:anim/accelerate_decelerate_interpolator"
++++android:duration="200"
++++android:fromXScale="1.0"
++++android:fromYScale="1.0"
++++android:toXScale="1.05"
++++android:toYScale="1.05"
++++android:pivotX="50%25"
++++android:pivotY="50%25"
++++android:repeatMode="reverse"
++++android:fillAfter="false"
++++android:repeatCount="24"
/>|code-block|syntax|javascript|3003668|不幸的是，这一次仅限于一个动画。|3003669|我们不能以这种方式定义动画序列...|3003670|entityMap^0|6|C|0|7|B|0|F|B|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|Z|8|@$9|10|A|11|B|C]]|D|@]|E|$]]|$1|H|3|I|5|6|7|12|8|@$9|13|A|14|B|C]]|D|@]|E|$]]|$1|J|3|K|5|6|7|15|8|@]|D|@]|E|$]]|$1|L|3|M|5|N|7|16|8|@]|D|@]|E|$O|P]]|$1|Q|3|R|5|6|7|17|8|@]|D|@]|E|$]]|$1|S|3|T|5|6|7|18|8|@]|D|@]|E|$]]|$1|U|3|-4|5|6|7|19|8|@]|D|@]|E|$]]]|V|$]]

I've found that &lt;set&gt; tag has buggy implementation in class AnimationSet. 
It can't deal correctly with repeatCount. 
What we can do - is to set repeatCount directly in &lt;scale&gt; tag. 
 
This XML resource is working well: 

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;scale
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:interpolator="@android:anim/accelerate_decelerate_interpolator"
 android:duration="200"
 android:fromXScale="1.0"
 android:fromYScale="1.0"
 android:toXScale="1.05"
 android:toYScale="1.05"
 android:pivotX="50%"
 android:pivotY="50%"
 android:repeatMode="reverse"
 android:fillAfter="false"
 android:repeatCount="24"
/&gt;
</code></pre>

Unfortunately, this is limited to only one animation at once. 
We can not define a sequence of animations this way...

blocks|key|3003679|text|你可以试试这段代码。在您代码中只需添加，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3003680|firstAnimation.setRepeatCount(5);|code-block|syntax|javascript|3003681|这将在一定时间内重复播放动画。|3003682|firstAnimation.setRepeatCount(Animation.INFINITE);
firstAnimation.setRepeatMode(Animation.INFINITE);|3003683|这将无限期地重复动画。|3003684|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|P|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Q|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|S|8|@]|9|@]|A|$]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

you can try this code.
In your code just add,

<pre><code>firstAnimation.setRepeatCount(5);
</code></pre>

This will repeat the animation for a definite time

<pre><code>firstAnimation.setRepeatCount(Animation.INFINITE);
firstAnimation.setRepeatMode(Animation.INFINITE);
</code></pre>

This will repeat the animation indefinitely.

blocks|key|3003690|text|您应该包含该属性|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3003691|android:repeatCount="infinite"|code-block|syntax|javascript|3003692|但是在你的“缩放”动画中而不是在“集合”中。|3003693|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|L|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|M|8|@]|9|@]|A|$]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

You should include the attribute

<pre><code>android:repeatCount="infinite"
</code></pre>

But in your "scale" animation not in "set"

blocks|key|3217133|text|我也面临着同样的问题..我在XMl+file..now中包含了android:repeatCount="infinite“它工作得很好...|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3217134|++<translate+
+++++++++++android:fromXDelta="0"
+++++++++++android:toXDelta="80"
+++++++++++android:duration="1000"
+++++++++++android:repeatCount="infinite"+++
+++++++++++android:repeatMode="reverse"+
+++++++++++android:pivotX="50%25"
+++++++++++android:pivotY="50%25"+++++++++++++++++++++++++++++
+++++++++++android:fillAfter="true"/>|code-block|syntax|javascript|3217135|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I was also facing the same problem..
i included android:repeatCount="infinite" in XMl file..now its working fine...

 
 

<pre><code> &lt;translate 
 android:fromXDelta="0"
 android:toXDelta="80"
 android:duration="1000"
 android:repeatCount="infinite" 
 android:repeatMode="reverse" 
 android:pivotX="50%"
 android:pivotY="50%" 
 android:fillAfter="true"/&gt;
</code></pre>

blocks|key|3217165|text|更新：早在2011年9月，一位安卓工程师就解决了这个问题。在XML中被忽略的属性现在可以使用了，除了repeatCount和fillEnabled，它们仍然被忽略(出于某种原因)。不幸的是，这意味着仍然不容易重复一次AnimationSet。|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|CODE|entityRanges|data|3217166|有关详细信息，请参阅updated+docs中的概述(解释哪些属性被忽略，哪些属性起作用，以及哪些属性传递给子对象)。要更深入地了解fillAfter、fillBefore和fillEnabled的实际功能，请参阅工程师(Chet+Haase)关于它的博客文章here。|3217167|3217168|原始答案|3217169|在Pavel和其他人的回答上进行扩展：<set>标签确实存在可笑的错误。它不能正确处理repeatCount和许多其他属性。|3217170|我花了几个小时弄清楚它能处理什么，不能处理什么，并在这里提交了一个bug报告/问题：Issue+17662|3217171|总之(这与AnimationSet有关)：|3217172|3217173|+setRepeatCount()+/android:重复计数|blockquote|3217174|3217175|此属性(以及repeatMode)在代码或XML中不起作用。这使得重复整个动画集变得困难。setDuration()+/android:在代码中的AnimationSet上设置持续时间有效(重写子动画的所有持续时间)，但当包含在XML+setFillAfter()+/android:+for中的标记中时不起作用。奇怪的是，我不需要将fillEnabled设置为true就能让它正常工作。setFillBefore()+/android:+both在代码和XML中似乎都没有作用/被忽略setFillEnabled()+/+android:fillEnabled|3217176|在代码和XML中似乎都没有影响/被忽略。即使不包含fillEnabled或将fillEnabled设置为false，我仍然可以让fillAfter工作。setStartOffset()+/android:开始偏移|3217177|这只适用于代码，而不适用于XML.|3217178|entityMap|0|LINK|mutability|MUTABLE|url|http://developer.android.com/reference/android/view/animation/AnimationSet.html|1|http://graphics-geek.blogspot.com/2011/08/mysterious-behavior-of-fillbefore.html|2|https://code.google.com/p/android/issues/detail?id=17662^0|0|3|1E|B|1Q|B|30|C|0|1U|9|24|A|2F|B|A|C|0|3M|4|1|0|0|0|J|5|17|B|0|16|B|2|0|5|C|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|1E|8|@$9|1F|A|1G|B|C]|$9|1H|A|1I|B|D]|$9|1J|A|1K|B|D]|$9|1L|A|1M|B|D]]|E|@]|F|$]]|$1|G|3|H|5|6|7|1N|8|@$9|1O|A|1P|B|D]|$9|1Q|A|1R|B|D]|$9|1S|A|1T|B|D]]|E|@$9|1U|A|1V|1|1W]|$9|1X|A|1Y|1|1Z]]|F|$]]|$1|I|3|-4|5|6|7|20|8|@]|E|@]|F|$]]|$1|J|3|K|5|6|7|21|8|@]|E|@]|F|$]]|$1|L|3|M|5|6|7|22|8|@$9|23|A|24|B|D]|$9|25|A|26|B|D]]|E|@]|F|$]]|$1|N|3|O|5|6|7|27|8|@]|E|@$9|28|A|29|1|2A]]|F|$]]|$1|P|3|Q|5|6|7|2B|8|@$9|2C|A|2D|B|D]]|E|@]|F|$]]|$1|R|3|-4|5|6|7|2E|8|@]|E|@]|F|$]]|$1|S|3|T|5|U|7|2F|8|@]|E|@]|F|$]]|$1|V|3|-4|5|6|7|2G|8|@]|E|@]|F|$]]|$1|W|3|X|5|6|7|2H|8|@]|E|@]|F|$]]|$1|Y|3|Z|5|6|7|2I|8|@]|E|@]|F|$]]|$1|10|3|11|5|6|7|2J|8|@]|E|@]|F|$]]|$1|12|3|-4|5|6|7|2K|8|@]|E|@]|F|$]]]|13|$14|$5|15|16|17|F|$18|19]]|1A|$5|15|16|17|F|$18|1B]]|1C|$5|15|16|17|F|$18|1D]]]]

Update: Back in Sep, 2011 an Android engineer fixed this issue for the most part. The attributes that were ignored in XML now work, with the exception of <code>repeatCount</code> and <code>fillEnabled</code> which are still ignored (on purpose for some reason). This means it still isn't easy to repeat an <code>AnimationSet</code> unfortunately.

For details please see the overview in the <a href="http://developer.android.com/reference/android/view/animation/AnimationSet.html" rel="noreferrer">updated docs</a> (explains which attributes are ignored, which work, and which are passed onto children). And for a deeper understanding of what <code>fillAfter</code>, <code>fillBefore</code>, and <code>fillEnabled</code> actually do, see the engineer's (Chet Haase) blog post about it <a href="http://graphics-geek.blogspot.com/2011/08/mysterious-behavior-of-fillbefore.html" rel="noreferrer">here</a>.

<hr>

<h2>Original Answer</h2>

To expand upon answers by Pavel and others: it is true that the <code>&lt;set&gt;</code> tag is ridiculously buggy. It can't deal correctly with <code>repeatCount</code> and a number of other attributes.

I spent a few hours figuring out what it can and can't deal with and have submitted a bug report/issue here: <a href="https://code.google.com/p/android/issues/detail?id=17662" rel="noreferrer">Issue 17662</a>

In summary (this concerns <code>AnimationSet</code>s):

<blockquote>
 setRepeatCount() / android:repeatCount
 
 <blockquote>
 This attribute (as well as repeatMode) does not work in code or XML. This makes repeating an entire set of animations difficult.
 </blockquote>
 
 setDuration() / android:duration 
 
 <blockquote>
 Setting this on an AnimationSet in code WORKS (overrides all durations of children animations), but not when included in the tag in XML
 </blockquote>
 
 setFillAfter() / android:fillAfter 
 
 <blockquote>
 This works in both code and XML for the tag. Strangely I have gotten it to also work without the need to set fillEnabled to true.
 </blockquote>
 
 setFillBefore() / android:fillBefore 
 
 <blockquote>
 Seems to have no effect/ignored in both code and XML
 </blockquote>
 
 setFillEnabled() / android:fillEnabled
 
 <blockquote>
 Seems to have no effect/ignored in both code and XML. I can still get fillAfter to work even without including fillEnabled or setting fillEnabled to false.
 </blockquote>
 
 setStartOffset() / android:startOffset
 
 <blockquote>
 This works only in code and not XML.
 </blockquote>
</blockquote>

blocks|key|3217255|text|我的大部分工作都是程序化的，我可能会迟到或效率低下，但这一次我完成了重复动画集目标(我甚至有两个交替的动画集)。所有这些代码所做的只是淡入一个图像，暂停，然后淡出，淡入另一个图像，暂停，淡出，并带回第一个图像(漂洗和重复)。我首先定义了我的Imageviews：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3217256|++++final+ImageView+purple+=+(ImageView)findViewById(R.id.purp);
++++final+ImageView+yellow+=+(ImageView)findViewById(R.id.yell);
++++purple.setVisibility(View.INVISIBLE);
++++yellow.setVisibility(View.INVISIBLE);|code-block|syntax|javascript|3217257|然后我做了两个定时器，任务定时器和处理程序来处理何时开始和停止每个动画：|3217258|++++Timer+p+=+new+Timer();
++++TimerTask+pu+=+new+TimerTask()+{
++++++++public+void+run()+{
++++++++++++++++handler1.post(new+Runnable()+{
++++++++++++++++++++++++public+void+run()+
++++++++++++++++++++++++{
+++++++++++++++++++++++++++fadein(purple);
++++++++++++++++++++++++}
+++++++++++++++});
++++++++}};
++++++++p.schedule(pu,+6000,+12000);

++++final+Handler+handler2+=+new+Handler();

++++Timer+y+=+new+Timer();
++++TimerTask+ye+=+new+TimerTask()+{
++++++++public+void+run()+{
++++++++++++++++handler2.post(new+Runnable()+{
++++++++++++++++++++++++public+void+run()+
++++++++++++++++++++++++{
+++++++++++++++++++++++++++fadein(yellow);
++++++++++++++++++++++++}
+++++++++++++++});
++++++++}};

++++++++y.schedule(ye,+0,+12000);|3217259|最后，我不是通过添加动画来创建动画集，而是让动画侦听器来确定何时开始每个动画：|3217260|public+void+fadein+(final+ImageView+image)
{
++++Animation+anim+=+new+AlphaAnimation(0,+1);

++++anim.setDuration(2000);

++++image.startAnimation(anim);
++++anim.setAnimationListener(new+AnimationListener()+{
++++++++public+void+onAnimationEnd(Animation+animation)+
++++++++{
++++++++++++image.clearAnimation();
++++++++++++image.invalidate();
++++++++++++pause(image);

++++++++}

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

++++++++}

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

++++++++}
++++});
}++++
public+void+pause+(final+ImageView+image)
{
++++Animation+anim+=+new+AlphaAnimation(1,+1);

++++anim.setDuration(2000);

++++image.startAnimation(anim);
++++anim.setAnimationListener(new+AnimationListener()+{
++++++++public+void+onAnimationEnd(Animation+animation)+
++++++++{
++++++++++++image.clearAnimation();
++++++++++++image.invalidate();
++++++++++++fadeout(image);

++++++++}

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

++++++++}

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

++++++++}
++++});
}+++++
public+void+fadeout+(final+ImageView+image)
{
++++Animation+anim+=+new+AlphaAnimation(1,0);

++++anim.setDuration(2000);

++++image.startAnimation(anim);
++++anim.setAnimationListener(new+AnimationListener()+{
++++++++public+void+onAnimationEnd(Animation+animation)+
++++++++{
++++++++++++image.clearAnimation();
++++++++++++image.invalidate();
++++++++}

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

++++++++}

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

++++++++}
++++});
}++++|3217261|清晰的动画和无效的地方，只是之前的尝试，并使这件事正常工作。我不知道它们是否是必需的。|3217262|希望这对某些人有帮助。|3217263|3217264|瑞安|3217265|entityMap^0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|X|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|Y|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|Z|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|10|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|11|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|12|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|13|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|14|8|@]|9|@]|A|$]]|$1|S|3|-4|5|6|7|15|8|@]|9|@]|A|$]]|$1|T|3|U|5|6|7|16|8|@]|9|@]|A|$]]|$1|V|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|W|$]]

I do most of my stuff programmatically and I may be late or inefficient on this one but this but I completed the repeat animationset goal (I a even have 2 alternating animation sets). All this code does is simply fade in one image,pause, then fade out, fade in another image, pause, fade out, and bring back the first one (rinse and repeat). I first defined my Imageviews:

<pre><code> final ImageView purple = (ImageView)findViewById(R.id.purp);
 final ImageView yellow = (ImageView)findViewById(R.id.yell);
 purple.setVisibility(View.INVISIBLE);
 yellow.setVisibility(View.INVISIBLE);
</code></pre>

Then I made two timers, task timers and handlers to deal with when to start and stop each animation:

<pre><code> Timer p = new Timer();
 TimerTask pu = new TimerTask() {
 public void run() {
 handler1.post(new Runnable() {
 public void run() 
 {
 fadein(purple);
 }
 });
 }};
 p.schedule(pu, 6000, 12000);

 final Handler handler2 = new Handler();

 Timer y = new Timer();
 TimerTask ye = new TimerTask() {
 public void run() {
 handler2.post(new Runnable() {
 public void run() 
 {
 fadein(yellow);
 }
 });
 }};

 y.schedule(ye, 0, 12000);
</code></pre>

Finally, rather than creating animation sets by adding animations, I just animations listeners to to determine when to start each animation:

<pre><code>public void fadein (final ImageView image)
{
 Animation anim = new AlphaAnimation(0, 1);

 anim.setDuration(2000);

 image.startAnimation(anim);
 anim.setAnimationListener(new AnimationListener() {
 public void onAnimationEnd(Animation animation) 
 {
 image.clearAnimation();
 image.invalidate();
 pause(image);

 }

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

 }

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

 }
 });
} 
public void pause (final ImageView image)
{
 Animation anim = new AlphaAnimation(1, 1);

 anim.setDuration(2000);

 image.startAnimation(anim);
 anim.setAnimationListener(new AnimationListener() {
 public void onAnimationEnd(Animation animation) 
 {
 image.clearAnimation();
 image.invalidate();
 fadeout(image);

 }

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

 }

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

 }
 });
} 
public void fadeout (final ImageView image)
{
 Animation anim = new AlphaAnimation(1,0);

 anim.setDuration(2000);

 image.startAnimation(anim);
 anim.setAnimationListener(new AnimationListener() {
 public void onAnimationEnd(Animation animation) 
 {
 image.clearAnimation();
 image.invalidate();
 }

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

 }

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

 }
 });
} 
</code></pre>

The clearanimation and invalidate where just previous attempts and getting this thing to work right. I don't know if they are required or not.

Hope this helps someone.

<hr>

Ryan

blocks|key|3217267|text|我也遇到过同样的问题，但我不想在Java中做任何计时的事情，因为UI线程有时可能非常忙。INFINITE标志不适用于set标记。所以我用一小段代码解决了这个问题：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3217268|mAnimation+=+(AnimationSet)+AnimationUtils.loadAnimation(myContext,+R.anim.blink);
mIcon.startAnimation(mAnimation);
mAnimation.setAnimationListener(new+AnimationListener()+{
++++public+void+onAnimationStart(Animation+animation)+{}
++++public+void+onAnimationRepeat(Animation+animation)+{}
++++public+void+onAnimationEnd(Animation+animation)+{
++++++++mIcon.startAnimation(mAnimation);
++++}
});|code-block|syntax|javascript|3217269|使用以下XML：|3217270|<alpha
++++xmlns:android="http://schemas.android.com/apk/res/android"
++++android:duration="1000"
++++android:fromAlpha="0.0"
++++android:toAlpha="1.0"+/>

<alpha
++++xmlns:android="http://schemas.android.com/apk/res/android"
++++android:duration="1000"
++++android:fromAlpha="0.9"
++++android:startOffset="1000"
++++android:toAlpha="0.0"+/>|3217271|​|3217272|其中mIcon是我布局中的ImageView。|3217273|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

I've faced the same problem, but didn't want to do any timing things in Java because of the point that the UI thread may be very busy sometimes.
The INFINITE flag doesn't work for the set tag. So I resolved the issue with a little piece of code:

<pre><code>mAnimation = (AnimationSet) AnimationUtils.loadAnimation(myContext, R.anim.blink);
mIcon.startAnimation(mAnimation);
mAnimation.setAnimationListener(new AnimationListener() {
 public void onAnimationStart(Animation animation) {}
 public void onAnimationRepeat(Animation animation) {}
 public void onAnimationEnd(Animation animation) {
 mIcon.startAnimation(mAnimation);
 }
});
</code></pre>

with the following XML:



<pre><code>&lt;alpha
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:duration="1000"
 android:fromAlpha="0.0"
 android:toAlpha="1.0" /&gt;

&lt;alpha
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:duration="1000"
 android:fromAlpha="0.9"
 android:startOffset="1000"
 android:toAlpha="0.0" /&gt;
</code></pre>



Where mIcon is an ImageView from my layout.

blocks|key|288267|text|我已经解决了这个问题。这是我的修复版本：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|288268|public+class+HelloAndroidActivity+extends+Activity+{
private+static+String+TAG+=+"animTest";
private+Animation+scaleAnimation;
private+int+currentCover+=+0;
private+List<ImageView>+imageViews+=+new+ArrayList<ImageView>(3);
private+Button+btn;
private+ImageView+img;

/**
+*+Called+when+the+activity+is+first+created.
+*+@param+savedInstanceState+If+the+activity+is+being+re-initialized+after+
+*+previously+being+shut+down+then+this+Bundle+contains+the+data+it+most+
+*+recently+supplied+in+onSaveInstanceState(Bundle).+Note:+Otherwise+it+is+null.
+*/
@Override
public+void+onCreate(Bundle+savedInstanceState)+{
++++super.onCreate(savedInstanceState);
++++Log.i(TAG,+"onCreate");
++++setContentView(R.layout.test);

++++img+=+(ImageView)findViewById(R.id.testpict);
++++imageViews.add(img);
++++img+=+(ImageView)findViewById(R.id.testpictTwo);
++++imageViews.add(img);
++++img+=+(ImageView)findViewById(R.id.testpict3);
++++imageViews.add(img);

++++scaleAnimation+=+AnimationUtils.loadAnimation(this,+R.anim.photo_scale);
++++scaleAnimation.setAnimationListener(new+CyclicAnimationListener());

++++btn+=+(Button)findViewById(R.id.startBtn);
++++btn.setOnClickListener(new+View.OnClickListener()+{

++++++++@Override
++++++++public+void+onClick(View+v)+{
++++++++++++imageViews.get(0).startAnimation(scaleAnimation);
++++++++}
++++});



}

private+class+CyclicAnimationListener+implements+AnimationListener{

++++@Override
++++public+void+onAnimationEnd(Animation+animation)+{
++++++++currentCover+%2B=+1;
++++++++if(currentCover+>=+imageViews.size()){
++++++++++++currentCover+=+0;
++++++++}
++++++++img+=+imageViews.get(currentCover);
++++++++scaleAnimation+=+AnimationUtils.loadAnimation(HelloAndroidActivity.this,+R.anim.photo_scale);
++++++++scaleAnimation.setAnimationListener(new+CyclicAnimationListener());
++++++++img.startAnimation(scaleAnimation);
++++}

++++@Override
++++public+void+onAnimationRepeat(Animation+animation)+{
++++++++Log.d("Animation",+"Repeat");
++++}

++++@Override
++++public+void+onAnimationStart(Animation+animation)+{

++++}

}

}|code-block|syntax|javascript|288269|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I've solved this problem. This is my version of the fix:

<pre><code>public class HelloAndroidActivity extends Activity {
private static String TAG = "animTest";
private Animation scaleAnimation;
private int currentCover = 0;
private List&lt;ImageView&gt; imageViews = new ArrayList&lt;ImageView&gt;(3);
private Button btn;
private ImageView img;

/**
 * Called when the activity is first created.
 * @param savedInstanceState If the activity is being re-initialized after 
 * previously being shut down then this Bundle contains the data it most 
 * recently supplied in onSaveInstanceState(Bundle). &lt;b&gt;Note: Otherwise it is null.&lt;/b&gt;
 */
@Override
public void onCreate(Bundle savedInstanceState) {
 super.onCreate(savedInstanceState);
 Log.i(TAG, "onCreate");
 setContentView(R.layout.test);

 img = (ImageView)findViewById(R.id.testpict);
 imageViews.add(img);
 img = (ImageView)findViewById(R.id.testpictTwo);
 imageViews.add(img);
 img = (ImageView)findViewById(R.id.testpict3);
 imageViews.add(img);

 scaleAnimation = AnimationUtils.loadAnimation(this, R.anim.photo_scale);
 scaleAnimation.setAnimationListener(new CyclicAnimationListener());

 btn = (Button)findViewById(R.id.startBtn);
 btn.setOnClickListener(new View.OnClickListener() {

 @Override
 public void onClick(View v) {
 imageViews.get(0).startAnimation(scaleAnimation);
 }
 });



}

private class CyclicAnimationListener implements AnimationListener{

 @Override
 public void onAnimationEnd(Animation animation) {
 currentCover += 1;
 if(currentCover &gt;= imageViews.size()){
 currentCover = 0;
 }
 img = imageViews.get(currentCover);
 scaleAnimation = AnimationUtils.loadAnimation(HelloAndroidActivity.this, R.anim.photo_scale);
 scaleAnimation.setAnimationListener(new CyclicAnimationListener());
 img.startAnimation(scaleAnimation);
 }

 @Override
 public void onAnimationRepeat(Animation animation) {
 Log.d("Animation", "Repeat");
 }

 @Override
 public void onAnimationStart(Animation animation) {

 }

}

}
</code></pre>

blocks|key|3217403|text|为了获得重复的动画，我利用了动画侦听器，并在动画结束时再次调用动画。这会像带括号的动画一样进行相机标记对焦。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3217404|下面是动画布局xml|3217405|<?xml+version="1.0"+encoding="utf-8"?>
<set+xmlns:android="http://schemas.android.com/apk/res/android">
<scale
++++android:fromXScale="1.0"
++++android:toXScale=".7"
++++android:fromYScale="1.0"
++++android:pivotX="50%25"
++++android:pivotY="50%25"
++++android:toYScale=".7"
++++android:duration="1000"/>
<scale+
++++android:duration="1000"
++++android:fromXScale=".7"
++++android:toXScale="1.0"
++++android:fromYScale=".7"
++++android:pivotX="50%25"
++++android:pivotY="50%25"
++++android:toYScale="1.0"
++++android:startOffset="1000"/>

</set>|code-block|syntax|javascript|3217406|下面是java代码|3217407|+public+void+startAnimation()+{

++++++++++++View+brackets+=+findViewById(R.id.brackets);
++++++++++++brackets.setVisibility(View.VISIBLE);

++++++++++++Animation+anim+=+AnimationUtils.loadAnimation(BuzzFinderActivity.this,+R.anim.crosshair_focusing);
++++++++++++anim.setAnimationListener(new+AnimationListener()+{

++++++++++++++++@Override
++++++++++++++++public+void+onAnimationEnd(Animation+arg0)+{
++++++++++++++++++++Animation+anim+=+AnimationUtils.loadAnimation(BuzzFinderActivity.this,+R.anim.crosshair_focusing);
++++++++++++++++++++anim.setAnimationListener(this);
++++++++++++++++++++brackets.startAnimation(anim);

++++++++++++++++}

++++++++++++++++@Override
++++++++++++++++public+void+onAnimationRepeat(Animation+arg0)+{
++++++++++++++++++++//+TODO+Auto-generated+method+stub

++++++++++++++++}

++++++++++++++++@Override
++++++++++++++++public+void+onAnimationStart(Animation+arg0)+{
++++++++++++++++++++//+TODO+Auto-generated+method+stub

++++++++++++++++}

++++++++++++});


++++++++++++brackets.startAnimation(anim);
}|3217408|entityMap^0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|O|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|P|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|Q|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|R|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|M|3|-4|5|6|7|T|8|@]|9|@]|A|$]]]|N|$]]

To get a repeating animation I utilized the animation listener, and called the animation again when it ended. This does a camera reticule focusing like animation with brackets.

Here is the animation layout xml

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;set xmlns:android="http://schemas.android.com/apk/res/android"&gt;
&lt;scale
 android:fromXScale="1.0"
 android:toXScale=".7"
 android:fromYScale="1.0"
 android:pivotX="50%"
 android:pivotY="50%"
 android:toYScale=".7"
 android:duration="1000"/&gt;
&lt;scale 
 android:duration="1000"
 android:fromXScale=".7"
 android:toXScale="1.0"
 android:fromYScale=".7"
 android:pivotX="50%"
 android:pivotY="50%"
 android:toYScale="1.0"
 android:startOffset="1000"/&gt;

&lt;/set&gt;
</code></pre>

Here is the java code

<pre><code> public void startAnimation() {

 View brackets = findViewById(R.id.brackets);
 brackets.setVisibility(View.VISIBLE);

 Animation anim = AnimationUtils.loadAnimation(BuzzFinderActivity.this, R.anim.crosshair_focusing);
 anim.setAnimationListener(new AnimationListener() {

 @Override
 public void onAnimationEnd(Animation arg0) {
 Animation anim = AnimationUtils.loadAnimation(BuzzFinderActivity.this, R.anim.crosshair_focusing);
 anim.setAnimationListener(this);
 brackets.startAnimation(anim);

 }

 @Override
 public void onAnimationRepeat(Animation arg0) {
 // TODO Auto-generated method stub

 }

 @Override
 public void onAnimationStart(Animation arg0) {
 // TODO Auto-generated method stub

 }

 });


 brackets.startAnimation(anim);
}
</code></pre>

blocks|key|287430|text|我是在开发一个向后兼容的应用程序时遇到这个问题的。太让人沮丧了！我最终编写了一个很好的变通方法类，可以从onCreate调用，并将任何动画资源踢到一个无限循环中。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|287431|在这里可以找到AnimationLooper类：https://gist.github.com/2018678|offset|length|287432|entityMap|0|LINK|mutability|MUTABLE|url|https://gist.github.com/2018678^0|0|O|V|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

i just came across this issue while working on a backwards compatible app. so frustrating! i ended up coding a nice workaround class that can be called from onCreate and will kickoff any animation resource into an indefinite loop. 

the class, AnimationLooper, is available here:
<a href="https://gist.github.com/2018678" rel="nofollow">https://gist.github.com/2018678</a>

blocks|key|3003956|text|我试图使用Daniel的代码来显示动画的确切次数，但遇到了一个问题:动画大约显示了n/2次，而预期的次数是n次。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3003957|所以我修改了Daniel的代码：|3003958|//...
@Override
public+void+onAnimationEnd(Animation+arg0)+{
++++mCurrentCount%2B%2B;
++++if+(mCurrentCount+<+REPEAT_COUNT)+{++
++++++++Animation+anim+=+AnimationUtils.loadAnimation(BuzzFinderActivity.this,+R.anim.crosshair_focusing);
++++++++anim.setAnimationListener(this);
++++++++brackets.post(new+Runnable()+{
++++++++++++@Override
++++++++++++public+void+run()+{
++++++++++++++++brackets.startAnimation(anim);
++++++++++++}
++++++++}++
++++}+
}
//...+|code-block|syntax|javascript|3003959|使用上面所示的variant，动画被精确地显示REPEAT_COUNT次，因为View.post()方法提供了在完成与先前动画相关的所有动作之后开始新动画的能力。|3003960|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

I tried to use Daniel's code to show animation exact number of times and had a problem: animation was shown approximatily n / 2 times, when n times expected. 

So I have modified Daniel's code:

<pre><code>//...
@Override
public void onAnimationEnd(Animation arg0) {
 mCurrentCount++;
 if (mCurrentCount &lt; REPEAT_COUNT) { 
 Animation anim = AnimationUtils.loadAnimation(BuzzFinderActivity.this, R.anim.crosshair_focusing);
 anim.setAnimationListener(this);
 brackets.post(new Runnable() {
 @Override
 public void run() {
 brackets.startAnimation(anim);
 }
 } 
 } 
}
//... 
</code></pre>

Using variant, shown above, animation is shown exectly REPEAT_COUNT times, because View.post() method gives an ability to start new animation after finishing all actions, related with previous animation.

blocks|key|3004046|text|使用android+sdk版本4.0.3：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3004047|在给定的动画元素中：|3004048|android:repeatCount="-1“|3004049|使其成为无限的动画。|3004050|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|J|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|K|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|L|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|M|8|@]|9|@]|A|$]]|$1|H|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|I|$]]

With android sdk version 4.0.3:

In the given animation elements:

android:repeatCount="-1"

makes it an infinite animation.

blocks|key|3004055|text|我得到了这个去，...i试图让一个视图连续地旋转一个圆圈。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3004056|之前我使用的是rotation.setRepeatMode(-1)，但这不起作用。切换到设置重复计数，它可以正常工作。这是在jelly+bean+4.2.2上的|3004057|+ObjectAnimator+rotation+=+ObjectAnimator.ofFloat(myview,
++++++++++++++++++++++++++"rotation",+360).setDuration(2000);
++++++++++++++++rotation.setRepeatMode(-1);
++++++++++rotation.setRepeatCount(Animation.INFINITE);+
+rotation.start();|code-block|syntax|javascript|3004058|entityMap^0|0|0|0^^$0|@$1|2|3|4|5|6|7|K|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|L|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|M|8|@]|9|@]|A|$G|H]]|$1|I|3|-4|5|6|7|N|8|@]|9|@]|A|$]]]|J|$]]

i got this to go ...i was trying to get a view to rotate in a circle continuously .

previous i was using rotation.setRepeatMode(-1) but that didn't work. switched to setrepeatcount and it works. This is on jelly bean 4.2.2

<pre><code> ObjectAnimator rotation = ObjectAnimator.ofFloat(myview,
 "rotation", 360).setDuration(2000);
 rotation.setRepeatMode(-1);
 rotation.setRepeatCount(Animation.INFINITE); 
 rotation.start();
</code></pre>

blocks|key|285324|text|在研究了互联网上的答案后，我找到了一个完美的解决方案。(是的，当与animationSet一起使用时，repeatCount和repeatMode非常容易出错)。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|285325|anim_rotate_fade.xml：|285326|<?xml+version="1.0"+encoding="utf-8"?>
<set+xmlns:android="http://schemas.android.com/apk/res/android"
++++android:interpolator="@android:anim/accelerate_decelerate_interpolator"
++++android:ordering="together"+>

++++<objectAnimator
++++++++android:duration="3000"
++++++++android:propertyName="rotation"
++++++++android:repeatCount="1"
++++++++android:valueTo="360"
++++++++android:valueType="floatType"+/>

++++<objectAnimator
++++++++android:duration="3000"
++++++++android:propertyName="alpha"
++++++++android:repeatCount="1"
++++++++android:repeatMode="reverse"
++++++++android:valueFrom="0.0"
++++++++android:valueTo="0.3"
++++++++android:valueType="floatType"+/>

++++<objectAnimator
++++++++android:duration="3000"
++++++++android:propertyName="y"
++++++++android:repeatCount="1"
++++++++android:repeatMode="reverse"
++++++++android:valueFrom="380"
++++++++android:valueTo="430"
++++++++android:valueType="floatType"+/>

</set>|code-block|syntax|javascript|285327|在活动中：(通过在动画结束后引入轻微延迟来解决它)。|285328|ImageView+starlightImageView+=+new+ImageView(this);
starlightImageView.setImageResource(R.drawable.starlight);
final+AnimatorSet+animate+=+(AnimatorSet)+AnimatorInflater.loadAnimator(this,+R.anim.anim_rotate_fade);
AnimatorListenerAdapter+animatorListener+=+new+AnimatorListenerAdapter()+{
++++@Override
++++public+void+onAnimationEnd(Animator+animation)+{
++++++++super.onAnimationEnd(animation);
++++++++new+Handler().postDelayed(new+Runnable()+{
++++++++++++@Override+public+void+run()+{
++++++++++++++++animate.start();
++++++++++++}
++++++++},+1000);
++++}
};
animate.setTarget(starlightImageView);
animate.addListener(animatorListener);|285329|你想研究的类有很多，但目前我使用的是高度灵活的objectAnimator。我不推荐使用动画或AnimationUtils：|285330|285331|Animation|unordered-list-item|285332|AnimationUtils|285333|Animator|285334|AnimatorInflater|285335|AnimatorListener|285336|AnimatorListenerAdapter|285337|285338|entityMap^0|0|0|0|0|0|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|15|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|16|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|17|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|18|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|19|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|1A|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|1B|8|@]|9|@]|A|$]]|$1|P|3|Q|5|R|7|1C|8|@]|9|@]|A|$]]|$1|S|3|T|5|R|7|1D|8|@]|9|@]|A|$]]|$1|U|3|V|5|R|7|1E|8|@]|9|@]|A|$]]|$1|W|3|X|5|R|7|1F|8|@]|9|@]|A|$]]|$1|Y|3|Z|5|R|7|1G|8|@]|9|@]|A|$]]|$1|10|3|11|5|R|7|1H|8|@]|9|@]|A|$]]|$1|12|3|-4|5|6|7|1I|8|@]|9|@]|A|$]]|$1|13|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]]|14|$]]

After researching through the answers from internet, I found a solutions which works perfectly for me. (And yes, the repeatCount and repeatMode is extremely buggy when used together with animationSet).

anim_rotate_fade.xml:

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;set xmlns:android="http://schemas.android.com/apk/res/android"
 android:interpolator="@android:anim/accelerate_decelerate_interpolator"
 android:ordering="together" &gt;

 &lt;objectAnimator
 android:duration="3000"
 android:propertyName="rotation"
 android:repeatCount="1"
 android:valueTo="360"
 android:valueType="floatType" /&gt;

 &lt;objectAnimator
 android:duration="3000"
 android:propertyName="alpha"
 android:repeatCount="1"
 android:repeatMode="reverse"
 android:valueFrom="0.0"
 android:valueTo="0.3"
 android:valueType="floatType" /&gt;

 &lt;objectAnimator
 android:duration="3000"
 android:propertyName="y"
 android:repeatCount="1"
 android:repeatMode="reverse"
 android:valueFrom="380"
 android:valueTo="430"
 android:valueType="floatType" /&gt;

&lt;/set&gt;
</code></pre>

In activity:
(Solve it by introducing a slight delay after animation ended).

<pre><code>ImageView starlightImageView = new ImageView(this);
starlightImageView.setImageResource(R.drawable.starlight);
final AnimatorSet animate = (AnimatorSet) AnimatorInflater.loadAnimator(this, R.anim.anim_rotate_fade);
AnimatorListenerAdapter animatorListener = new AnimatorListenerAdapter() {
 @Override
 public void onAnimationEnd(Animator animation) {
 super.onAnimationEnd(animation);
 new Handler().postDelayed(new Runnable() {
 @Override public void run() {
 animate.start();
 }
 }, 1000);
 }
};
animate.setTarget(starlightImageView);
animate.addListener(animatorListener);
</code></pre>

There are a lot of classes you would like to research on, but currently I'm using objectAnimator which is highly flexible. I wouldn't recommend to use Animation or AnimationUtils:

<ul>
<li>Animation</li>
<li>AnimationUtils</li>
<li>Animator</li>
<li>AnimatorInflater</li>
<li>AnimatorListener</li>
<li>AnimatorListenerAdapter</li>
</ul>

blocks|key|3004110|text|用户需要监听第一个动画的完成，然后在onStopAnimation回调中重新启动动画，尝试一下这个link|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|3004111|entityMap|0|LINK|mutability|MUTABLE|url|http://cubiclepi.com/post/24104766670/workaround-class-for-android-animation-set-repeatcount^0|1D|4|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

One need to listen for completion of first animation then re-start the animation in onStopAnimation call back, give a try to this <a href="http://cubiclepi.com/post/24104766670/workaround-class-for-android-animation-set-repeatcount" rel="nofollow">link</a>

blocks|key|290847|text|将以下类添加到项目中：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|290848|import+android.view.View;
import+android.view.animation.Animation;

public+class+AnimationRepeater+implements+Animation.AnimationListener
{
++++private+View+view;
++++private+Animation+animation;
++++private+int+count;

++++public+AnimationRepeater(View+view,+Animation+animation)
++++{
++++++++this.view+=+view;
++++++++this.animation+=+animation;
++++++++this.count+=+-1;
++++}

++++public+AnimationRepeater(View+view,+Animation+animation,+int+count)
++++{
++++++++this.view+=+view;
++++++++this.animation+=+animation;
++++++++this.count+=+count;
++++}

++++public+void+start()
++++{
++++++++this.view.startAnimation(this.animation);
++++++++this.animation.setAnimationListener(this);
++++}

++++@Override
++++public+void+onAnimationStart(Animation+animation)+{+}

++++@Override
++++public+void+onAnimationEnd(Animation+animation)
++++{
++++++++if+(this.count+==+-1)
++++++++++++this.view.startAnimation(animation);
++++++++else
++++++++{
++++++++++++if+(count+-+1+>=+0)
++++++++++++{
++++++++++++++++this.animation.start();
++++++++++++++++count+--;
++++++++++++}
++++++++}
++++}

++++@Override
++++public+void+onAnimationRepeat(Animation+animation)+{+}
}|code-block|syntax|javascript|290849|对于视图的无限循环，请执行以下操作：|290850|Animation+a+=+AnimationUtils(Context,+R.anim.animation);
new+AnimationRepeater(View,+a).start();|290851|如果只想重复动画N次，请执行以下操作：|290852|Animation+a+=+AnimationUtils(Context,+R.anim.animation);
new+AnimationRepeater(View,+a,+int+N).start();|290853|N代表重复次数。|290854|entityMap^0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|U|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|W|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|X|8|@]|9|@]|A|$E|F]]|$1|O|3|P|5|6|7|Y|8|@]|9|@]|A|$]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

Add the following class to your project:

<pre><code>import android.view.View;
import android.view.animation.Animation;

public class AnimationRepeater implements Animation.AnimationListener
{
 private View view;
 private Animation animation;
 private int count;

 public AnimationRepeater(View view, Animation animation)
 {
 this.view = view;
 this.animation = animation;
 this.count = -1;
 }

 public AnimationRepeater(View view, Animation animation, int count)
 {
 this.view = view;
 this.animation = animation;
 this.count = count;
 }

 public void start()
 {
 this.view.startAnimation(this.animation);
 this.animation.setAnimationListener(this);
 }

 @Override
 public void onAnimationStart(Animation animation) { }

 @Override
 public void onAnimationEnd(Animation animation)
 {
 if (this.count == -1)
 this.view.startAnimation(animation);
 else
 {
 if (count - 1 &gt;= 0)
 {
 this.animation.start();
 count --;
 }
 }
 }

 @Override
 public void onAnimationRepeat(Animation animation) { }
}
</code></pre>

For infinite loop of your view, do the following:

<pre><code>Animation a = AnimationUtils(Context, R.anim.animation);
new AnimationRepeater(View, a).start();
</code></pre>

If you want to repeat the animation for N-times only, do the following:

<pre><code>Animation a = AnimationUtils(Context, R.anim.animation);
new AnimationRepeater(View, a, int N).start();
</code></pre>

N stands for number of repetitions.

blocks|key|3004154|text|对@Danufr+answer进行一些小调整，以避免再次加载资源。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3004155|++++operator+=+(ImageView)+findViewById(R.id.operator_loading);
++final++Animation+ani+=+AnimationUtils.loadAnimation(getApplicationContext(),R.anim.finding_operator);


++++ani.setAnimationListener(new+Animation.AnimationListener()+{
++++++++@Override
++++++++public+void+onAnimationStart(Animation+animation)+{

++++++++}

++++++++@Override
++++++++public+void+onAnimationEnd(Animation+animation)+{

++++++++++++operator.startAnimation(ani);

++++++++}

++++++++@Override
++++++++public+void+onAnimationRepeat(Animation+animation)+{

++++++++}
++++});

++++operator.setAnimation(ani);|code-block|syntax|javascript|3004156|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Little tweak to @Danufr answer to save resources from loading again.

<pre><code> operator = (ImageView) findViewById(R.id.operator_loading);
 final Animation ani = AnimationUtils.loadAnimation(getApplicationContext(),R.anim.finding_operator);


 ani.setAnimationListener(new Animation.AnimationListener() {
 @Override
 public void onAnimationStart(Animation animation) {

 }

 @Override
 public void onAnimationEnd(Animation animation) {

 operator.startAnimation(ani);

 }

 @Override
 public void onAnimationRepeat(Animation animation) {

 }
 });

 operator.setAnimation(ani);
</code></pre>

blocks|key|287557|text|我以前在我的项目中使用android:repeatMode="reverse"解决了这个问题。|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|287558|<scale
++++android:interpolator="@android:anim/decelerate_interpolator"
++++android:duration="500"
++++android:fromXScale="1.0"
++++android:fromYScale="1.0"
++++android:toXScale="1.2"
++++android:toYScale="1.2"
++++android:pivotX="50%25"
++++android:pivotY="50%25"
++++android:repeatMode="reverse"
++++android:repeatCount="infinite"+/>|code-block|syntax|javascript|287559|entityMap^0|B|S|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@$9|N|A|O|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|P|8|@]|D|@]|E|$I|J]]|$1|K|3|-4|5|6|7|Q|8|@]|D|@]|E|$]]]|L|$]]

I solved this problem using <code>android:repeatMode="reverse"</code> before in my project. 

<pre><code>&lt;scale
 android:interpolator="@android:anim/decelerate_interpolator"
 android:duration="500"
 android:fromXScale="1.0"
 android:fromYScale="1.0"
 android:toXScale="1.2"
 android:toYScale="1.2"
 android:pivotX="50%"
 android:pivotY="50%"
 android:repeatMode="reverse"
 android:repeatCount="infinite" /&gt;
</code></pre>

blocks|key|3217651|text|我用线程解决了这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3217652|Button+btn+=+(Button)+findViewById(R.id.buttonpush);
++++final+TextView+textview+=+(TextView)+findViewById(R.id.hello);
++++btn.setOnClickListener(new+View.OnClickListener()+{
++++++++@Override
++++++++public+void+onClick(View+view)+{
++++++++++++textview.setText("...................");
++++++++++++final+Animation+animationtest+=+AnimationUtils.loadAnimation(MainActivity.this,+android.R.anim.slide_in_left);
++++++++++++animationtest.setDuration(1000);

++++++++++++final+Handler+handler+=+new+Handler();
++++++++++++Runnable+runnable+=+new+Runnable()+{
++++++++++++++++public+void+run()+{
++++++++++++++++++++handler.postDelayed(this,+1500);
++++++++++++++++++++textview.startAnimation(animationtest);
++++++++++++++++}
++++++++++++};
++++++++++++handler.postDelayed(runnable,+500);+//+start
++++++++++++handler.removeCallbacks(runnable);+//STOP+Timer

++++++++}
++++});|code-block|syntax|javascript|3217653|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

I solved this problem using thread.

<pre><code>Button btn = (Button) findViewById(R.id.buttonpush);
 final TextView textview = (TextView) findViewById(R.id.hello);
 btn.setOnClickListener(new View.OnClickListener() {
 @Override
 public void onClick(View view) {
 textview.setText("...................");
 final Animation animationtest = AnimationUtils.loadAnimation(MainActivity.this, android.R.anim.slide_in_left);
 animationtest.setDuration(1000);

 final Handler handler = new Handler();
 Runnable runnable = new Runnable() {
 public void run() {
 handler.postDelayed(this, 1500);
 textview.startAnimation(animationtest);
 }
 };
 handler.postDelayed(runnable, 500); // start
 handler.removeCallbacks(runnable); //STOP Timer

 }
 });
</code></pre>

blocks|key|287594|text|它工作正常|type|unstyled|depth|inlineStyleRanges|entityRanges|data|287595|+GifDrawable+gifDrawable+=+(GifDrawable)+gifImageView.getDrawable();
++++gifDrawable.setLoopCount(0);|code-block|syntax|javascript|287596|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

it's working fine 

<pre><code> GifDrawable gifDrawable = (GifDrawable) gifImageView.getDrawable();
 gifDrawable.setLoopCount(0);
</code></pre>

blocks|key|3217833|text|在我的案例中，上述解决方案都不起作用。Danuofr的解决方案确实适用于动画集，但当我进行单元测试时，我的测试常常陷入这个无限循环。最后，根据我的情况，我需要重复这个动画特定的次数。因此，我以级联的方式在anim_rot.xml中手动添加了我的动画副本，并添加了偏移值。我知道这很糟糕，对许多人来说都不起作用，但这是我的情况下唯一的变通办法。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3217834|anim_rot.xml|3217835|<set+xmlns:android="http://schemas.android.com/apk/res/android">
++++<rotate
++++++++android:duration="2000"
++++++++android:fromDegrees="20"
++++++++android:pivotX="29%25"
++++++++android:pivotY="50%25"
++++++++android:toDegrees="-20"+/>
++++<rotate
++++++++android:duration="2000"
++++++++android:fromDegrees="-20"
++++++++android:pivotX="29%25"
++++++++android:pivotY="53%25"
++++++++android:startOffset="2000"
++++++++android:toDegrees="20"+/>
++++<rotate
++++++++android:startOffset="4000"
++++++++android:duration="2000"
++++++++android:fromDegrees="20"
++++++++android:pivotX="29%25"
++++++++android:pivotY="56%25"
++++++++android:toDegrees="-20"+/>
++++<rotate
++++++++android:duration="2000"
++++++++android:fromDegrees="-20"
++++++++android:pivotX="29%25"
++++++++android:pivotY="59%25"
++++++++android:startOffset="6000"
++++++++android:toDegrees="20"+/>
++++<rotate
++++++++android:startOffset="8000"
++++++++android:duration="2000"
++++++++android:fromDegrees="20"
++++++++android:pivotX="29%25"
++++++++android:pivotY="62%25"
++++++++android:toDegrees="-20"+/>
++++<rotate
++++++++android:duration="2000"
++++++++android:fromDegrees="-20"
++++++++android:pivotX="29%25"
++++++++android:pivotY="65%25"
++++++++android:startOffset="10000"
++++++++android:toDegrees="20"+/>
</set>|code-block|syntax|javascript|3217836|我这样做是为了将动画重复3次。通过添加偏移值，可以添加更多副本以重复特定的次数。|3217837|entityMap^0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|M|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|N|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|O|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|P|8|@]|9|@]|A|$]]|$1|K|3|-4|5|6|7|Q|8|@]|9|@]|A|$]]]|L|$]]

None of the above solutions worked in my case. The solution by Danuofr did work for animation set but when I was doing unit testing, my tests used to get stuck in this infinite loop. Finally, specific to my case, I needed to repeat this animation specific number of times. So, I manually added copies of my animation in anim_rot.xml in a cascaded manner adding the offset value. I know it's bad and won't work for many but it was the only workaround for my case. 

anim_rot.xml

<pre><code>&lt;set xmlns:android="http://schemas.android.com/apk/res/android"&gt;
 &lt;rotate
 android:duration="2000"
 android:fromDegrees="20"
 android:pivotX="29%"
 android:pivotY="50%"
 android:toDegrees="-20" /&gt;
 &lt;rotate
 android:duration="2000"
 android:fromDegrees="-20"
 android:pivotX="29%"
 android:pivotY="53%"
 android:startOffset="2000"
 android:toDegrees="20" /&gt;
 &lt;rotate
 android:startOffset="4000"
 android:duration="2000"
 android:fromDegrees="20"
 android:pivotX="29%"
 android:pivotY="56%"
 android:toDegrees="-20" /&gt;
 &lt;rotate
 android:duration="2000"
 android:fromDegrees="-20"
 android:pivotX="29%"
 android:pivotY="59%"
 android:startOffset="6000"
 android:toDegrees="20" /&gt;
 &lt;rotate
 android:startOffset="8000"
 android:duration="2000"
 android:fromDegrees="20"
 android:pivotX="29%"
 android:pivotY="62%"
 android:toDegrees="-20" /&gt;
 &lt;rotate
 android:duration="2000"
 android:fromDegrees="-20"
 android:pivotX="29%"
 android:pivotY="65%"
 android:startOffset="10000"
 android:toDegrees="20" /&gt;
&lt;/set&gt;
</code></pre>

I did this to repeat the animation 3 times. You can add more copies to repeat it specific times by adding offset values.

blocks|key|3217843|text|按照我下面的建议，只需在xml代码中添加一行即可。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3217844|<scale
++++android:duration="500"
++++android:fromXScale="1.0"
++++android:fromYScale="1.0"
++++android:toXScale="1.2"
++++android:toYScale="1.2"
++++android:pivotX="50%25"
++++android:pivotY="50%25"
++++android:repeatCount="infinite"+//+just+add+this+one+line+
++++android:fillAfter="false"
++++/>
</set>|code-block|syntax|javascript|3217845|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

you have to add just one line in your xml code that i suggested below . 

<pre><code>&lt;scale
 android:duration="500"
 android:fromXScale="1.0"
 android:fromYScale="1.0"
 android:toXScale="1.2"
 android:toYScale="1.2"
 android:pivotX="50%"
 android:pivotY="50%"
 android:repeatCount="infinite" // just add this one line 
 android:fillAfter="false"
 /&gt;
&lt;/set&gt;
</code></pre>

I'm trying to make simple animation that would repeat several times (or infinitely). 
It seems that <code>android:repeatCount</code> does not work! 
Here is my animation resource from <code>/res/anim/first_animation.xml</code> :

<pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
&lt;set
 xmlns:android="http://schemas.android.com/apk/res/android"
 android:shareInterpolator="false"
 android:repeatCount="infinite"
 &gt;
 &lt;scale
 android:interpolator="@android:anim/decelerate_interpolator"
 android:duration="500"
 android:fromXScale="1.0"
 android:fromYScale="1.0"
 android:toXScale="1.2"
 android:toYScale="1.2"
 android:pivotX="50%"
 android:pivotY="50%"
 android:fillAfter="false" /&gt;
 &lt;scale
 android:interpolator="@android:anim/accelerate_interpolator"
 android:startOffset="500"
 android:duration="500"
 android:fromXScale="1.2"
 android:fromYScale="1.2"
 android:toXScale="1.0"
 android:toYScale="1.0"
 android:pivotX="50%"
 android:pivotY="50%"
 android:fillAfter="false" /&gt;
&lt;/set&gt;
</code></pre>

First it should scale image from 1.0 to 1.2 size in 500 ms. 
And then scale it back to 1.0 in 500 ms. 
Here is how I'm using it: 

<pre><code>Animation firstAnimation = AnimationUtils.loadAnimation(this, R.anim.first_animation);
imgView.startAnimation(firstAnimation);
</code></pre>

It makes one cycle and then finishes. 
It scales up, then scales down ans then stops. 
 
How can I make this work as intended?

Android animation does not repeat

单元测试

Java

我正在尝试制作简单的动画，可以重复几次(或无限次)。看起来android:repeatCount不工作了！这是我来自/res/anim/first_animation.xml的动画资源：<?xml version="1.0" encoding="utf-8"?><set xmlns:android="http:/...

问Android动画不重复
EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问Android动画不重复EN

社区

活动

资源

关于

腾讯云开发者

热门产品

热门推荐

更多推荐

问Android动画不重复
EN