public RotateAnimation setPivot(int pivot) {
this.pivot = pivot;
float pivotX, pivotY, viewWidth = targetView.getWidth(), viewHeight = targetView.getHeight();
switch (pivot) {
case PIVOT_TOP_LEFT:
pivotX = 1f;
pivotY = 1f;
break;
case PIVOT_TOP_RIGHT:
pivotX = viewWidth;
pivotY = 1f;
break;
case PIVOT_BOTTOM_LEFT:
pivotX = 1f;
pivotY = viewHeight;
break;
case PIVOT_BOTTOM_RIGHT:
pivotX = viewWidth;
pivotY = viewHeight;
break;
default:
pivotX = viewWidth / 2;
pivotY = viewHeight / 2;
break;
}
ViewHelper.setPivotX(targetView, pivotX);
ViewHelper.setPivotY(targetView, pivotY);
return this;
}
@Override
public AnimatorSet createAnimatorSet() {
ViewHelper.setClipChildren(targetView, false);
AnimatorSet rotationSet = new AnimatorSet();
rotationSet.play(
ObjectAnimator.ofFloat(targetView, View.ROTATION, targetView.getRotation() + degrees));
rotationSet.setInterpolator(interpolator);
rotationSet.setDuration(duration);
if (listener != null) {
rotationSet.addListener(listener);
}
return rotationSet;
}