Develop Reference

i want implement animation for Floating Button

I want to give a full rotation animation to my floating button, i have the code, but its only animating like rotating half. i want rotate the floating button from a position and it should end with the same position where it started( a full rotation ) , how to do that ?
here is my code , i want some one to modify the value or code
final OvershootInterpolator interpolator = new OvershootInterpolator();
ViewCompat.animate(fab).
rotation(170f).
withLayer().
setDuration(1000).
setInterpolator(interpolator).
start();

Make rotate.xml in res/anim:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android">
<rotate
android:fromDegrees="0"
android:toDegrees="360"
android:pivotX="50%"
android:pivotY="50%"
android:repeatCount="0"
android:duration="1000" />
</set>
Then in code:
FloatingActionButton mFloatingButton = view.findViewById(R.id.myFloatingButton);
Animation mAnimation = AnimationUtils.loadAnimation(this, R.anim.rotate);
mFloatingButton.startAnimation(mAnimation);

How can i animate hamburger drawer icon

I have to animate a drawer icon. The red circle needs to pop up in the same way as in the gif below. Any of the animation styles are fine, I only want to know if I can create an animation like these. Any thoughts?
I have searched the internet, but I haven't found anything so far.

You could try using the scale animation, for example, to get a similar effect of the pop animation in that gif you could do the following:
Create a file res/anim/bounce.xml:
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="#android:anim/bounce_interpolator">
<scale xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="800"
android:fromXScale="1.5"
android:fromYScale="1.5"
android:pivotX="50%"
android:pivotY="50%"
android:toXScale="1"
android:toYScale="1" />
</set>
And then load the animation:
Animation bounceAnimation = AnimationUtils.loadAnimation(getActivity(), R.anim.bounce);
yourView.startAnimation(bounceAnimation);

accelerate_decelerate_interpolator no pause when animation ends and the next start

I try to achieve an animation like this one :
The code of my animation look like this :
<rotate
xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="1000"
android:fromDegrees="0"
android:interpolator="#android:anim/accelerate_decelerate_interpolator"
android:pivotX="100%"
android:pivotY="100%"
android:repeatCount="infinite"
android:repeatMode="restart"
android:toDegrees="360"
>
</rotate>
and the result :
it's not that bad, but as you can see, every time the animation ends there is a small pause before the next start so I can't reach the same result as seen in the first gif. And I don't really know what I can modify to achieve that. With a linear_interpolator it's working but there is no accelerate/decelerate anymore.
Any idea ?

Rotating wheel in android

My imageview consists of circle wheel as shown in below pic.I want that wheel should start rotating as soon as user presses a start button and stop rotating when user presses stop button.Is it possible programmatically?If yes,how can i do that?

Create a file named clockwise_rotation.xml and put it into /res/anim Change the duration according to your needs.
<?xml version="1.0" encoding="utf-8"?>
<rotate
xmlns:android="http://schemas.android.com/apk/res/android"
android:duration="3500"
android:fromDegrees="0"
android:interpolator="#android:anim/linear_interpolator"
android:pivotX="50%"
android:pivotY="50%"
android:repeatCount="infinite"
android:startOffset="0"
android:toDegrees="360"
/>
And make these two functions that you will be calling in your two buttons
private void startAnimation(){
Animation rotation = AnimationUtils.loadAnimation(getContext(), R.anim.clockwise_rotation);
mImageView.startAnimation(rotation);
}
private void stopAnimation(){
mImageView.clearAnimation();
}

Avoid animation automatically "unwinding"?

I've a simple view animation, but I can't see to get "rid" of the animation "unwinding" (and I can't seem to find a solution online).
<?xml version="1.0" encoding="utf-8"?>
<set xmlns:android="http://schemas.android.com/apk/res/android"
android:interpolator="#android:anim/linear_interpolator"
android:shareInterpolator="true" >
<scale
android:duration="250"
android:fromXScale="1"
android:fromYScale="1"
android:pivotX="50%"
android:pivotY="50%"
android:repeatCount="0"
android:toXScale="1.1"
android:toYScale="1.1" />
</set>
What this does is, simply, inflates the View by 10% proportionally, from the middle.
But, when it executes, it inflates and, when it reaches the end, it deflates back. I want to avoid that -- the "unwinding" effect -- when it scales back from 110% to 100%.
How can that be done?
Edit:
I'm starting it simply with this:
Animation animation1 = AnimationUtils.loadAnimation(this, R.anim.<name>);
v.startAnimation(animation1);

The correct answer is found here: How can I animate a view in Android and have it stay in the new position/size?
It is putting this:
android:fillAfter="true"
android:fillEnabled="true"
inside the <set tag.