Android rotation animation

Roate the wheel image in 360 * 12 degree around the center of the wheel image in 3 seconds. The pivot point of the roation will be the center of the wheel image. The x position is half the width of the image and the y position is the half the height of the image.
[code language=”java”]
float mAngleToRotate = 360f * 12; // rotate 12 rounds
RotateAnimation wheelRotation = new RotateAnimation(0.0f, mAngleToRotate, ivWheel.getWidth()/2.0f, ivWheel.getHeight()/2.0f);
wheelRotation.setDuration(3000); // rotate 12 rounds in 3 seconds
wheelRotation.setInterpolator(this, android.R.interpolator.accelerate_decelerate);
ivWheel.startAnimation(wheelRotation);

wheelRotation.setAnimationListener(new Animation.AnimationListener() {
public void onAnimationStart(Animation animation) {
Log.d("RotationActivity", "Rotation started…");
}

public void onAnimationEnd(Animation animation) {
Log.d("RotationActivity", "Rotation ended…");
}

public void onAnimationRepeat(Animation animation) {

}
});
[/code]

activity_rotate.xml, the layout file for the rotation animation demo.
[code language=”xml”]
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:orientation="vertical" android:layout_width="match_parent"
android:layout_height="match_parent">
<Button
android:id="@+id/btn_rotate"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Rotate"
android:onClick="rotate"/>
<ImageView
android:id="@+id/iv_wheel"
android:layout_width="200dp"
android:layout_height="200dp"
android:layout_gravity="center"
android:src="@drawable/wheel_image"
/>
</LinearLayout>
[/code]

RotateActivity.java, the activity file for the rotation animation demo.
[code language=”java”]
public class RotationActivity extends AppCompatActivity {

private ImageView ivWheel;

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_rotate);

ivWheel = (ImageView) findViewById(R.id.iv_wheel);
}

/**
* Roate the wheel image in 360 * 12 degree around the center of the wheel image in 3 seconds
* The center of the wheel image is ivWheel.getWidth()/2.0f, ivWheel.getHeight()/2.0f
* @param v
*/
public void rotate(View v) {
float mAngleToRotate = 360f * 12; // rotate 12 rounds
RotateAnimation wheelRotation = new RotateAnimation(0.0f, mAngleToRotate, ivWheel.getWidth()/2.0f, ivWheel.getHeight()/2.0f);
wheelRotation.setDuration(3000); // rotate 12 rounds in 3 seconds
wheelRotation.setInterpolator(this, android.R.interpolator.accelerate_decelerate);
ivWheel.startAnimation(wheelRotation);

wheelRotation.setAnimationListener(new Animation.AnimationListener() {
public void onAnimationEnd(Animation animation) {
Log.d("RotationActivity", "Roation started…");
}

public void onAnimationRepeat(Animation animation) {

}

public void onAnimationStart(Animation animation) {
Log.d("RotationActivity", "Roation ended…");
}
});
}

}
[/code]

Complete example in Github