I'm trying to make simple animation that is repeated several times (or infinite).
It seems that android:repeatCount
does not work!
Here is my animation resource from /res/anim/first_animation.xml
:
<?xml version="1.0" encoding="utf-8"?>
<set
xmlns:android="http://schemas.android.com/apk/res/android"
android:shareInterpolator="false"
android:repeatCount="infinite"
>
<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" />
<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" />
</set>
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:
Animation firstAnimation = AnimationUtils.loadAnimation(this, R.anim.first_animation);
imgView.startAnimation(firstAnimation);
It makes one cycle and then finishes.
It scales up, then scales down ans then stops.
How can I make this work as intended?
Source: Tips4all
To expand upon answers by Pavel and others: it is true that the <set> tag is ridiculously buggy. It can't deal correctly with repeatCount and a number of other attributes.
ReplyDeleteI spent a few hours figuring out what it can and can't deal with and have submitted a bug report/issue here: Issue 17662
In summary (this concerns AnimationSets):
setRepeatCount() / android:repeatCount
This attribute (as well as repeatMode) does not work in code or XML. This makes repeating an entire set of animations difficult.
setDuration() / android:duration
Setting this on an AnimationSet in code WORKS (overrides all durations of children animations), but not when included in the tag in XML
setFillAfter() / android:fillAfter
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.
setFillBefore() / android:fillBefore
Seems to have no effect/ignored in both code and XML
setFillEnabled() / android:fillEnabled
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.
setStartOffset() / android:startOffset
This works only in code and not XML.
I've found that <set> tag has buggy implementation in class AnimationSet.
ReplyDeleteIt can't deal correctly with repeatCount.
What we can do - is to set repeatCount directly in <scale> tag.
This XML resource is working well:
<?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%"
android:pivotY="50%"
android:repeatMode="reverse"
android:fillAfter="false"
android:repeatCount="24"
/>
Unfortunately, this is limited to only one animation at once.
We can not define a sequence of animations this way...
You should include the attribute
ReplyDeleteandroid:repeatCount="infinite"
But in your "scale" animation not in "set"
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.
ReplyDeleteHere is the animation layout xml
<?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%"
android:pivotY="50%"
android:toYScale=".7"
android:duration="1000"/>
<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"/>
</set>
Here is the java 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);
}
Try to add the code to a looping thread or a while/for statement
ReplyDeleteexactly, you have to put both RepeatCount and RepeatMode to infinite
ReplyDeleteI was also facing the same problem..
ReplyDeletei included android:repeatCount="infinite" in XMl file..now its working fine...
<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"/>
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.
ReplyDeleteThe INFINITE flag doesn't work for the set tag. So I resolved the issue with a little piece of 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);
}
});
with the following XML:
<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" />
Where mIcon is an ImageView from my layout.
I've solved this problem. This is my version of the fix:
ReplyDeletepublic 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). <b>Note: Otherwise it is null.</b>
*/
@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 >= 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) {
}
}
}
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.
ReplyDeletethe class, AnimationLooper, is available here:
https://gist.github.com/2018678
you can try this code.
ReplyDeleteIn your code just add,
firstAnimation.setRepeatCount(5);
This will repeat the animation for a definite time
firstAnimation.setRepeatCount(Animation.INFINITE);
firstAnimation.setRepeatMode(Animation.INFINITE);
This will repeat the animation indefinitely.