/** 清除 */
private void disappeared() {
isDisappear = true;
invalidate();
if (mListener != null) {
mListener.onDisappear(mDragCenter);
}
}
private void handleActionUp() {
if (isOutOfRange) {
// When user drag it back, we should call onReset().
if (GeometryUtil.getDistanceBetween2Points(mDragCenter, mInitCenter) < resetDistance) {
if (mListener != null) mListener.onReset(isOutOfRange);
return;
}
// Otherwise
disappeared();
} else {
// 手指抬起时，弹回动画
mAnim = ValueAnimator.ofFloat(1.0f);
mAnim.setInterpolator(new OvershootInterpolator(4.0f));
final PointF startPoint = new PointF(mDragCenter.x, mDragCenter.y);
final PointF endPoint = new PointF(mStickCenter.x, mStickCenter.y);
mAnim.addUpdateListener(
new AnimatorUpdateListener() {
@Override
public void onAnimationUpdate(ValueAnimator animation) {
float fraction = animation.getAnimatedFraction();
PointF pointByPercent =
GeometryUtil.getPointByPercent(startPoint, endPoint, fraction);
updateDragCenter((float) pointByPercent.x, (float) pointByPercent.y);
}
});
mAnim.addListener(
new AnimatorListenerAdapter() {
@Override
public void onAnimationEnd(Animator animation) {
if (mListener != null) mListener.onReset(isOutOfRange);
}
});
if (GeometryUtil.getDistanceBetween2Points(startPoint, endPoint) < 10) {
mAnim.setDuration(10);
} else {
mAnim.setDuration(500);
}
mAnim.start();
}
}
