android.support.v4.view.ViewCompat#setY ( )源码实例Demo

public void reset() {
  if (!mIsCreated) {
    return;
  }
  mShowing = false;
  if (mFabAnimation != null) {
    mFabAnimation.cancel();
  }
  if (mSheetAnimation != null) {
    mSheetAnimation.cancel();
  }
  if (mOverlayAnimation != null) {
    mOverlayAnimation.cancel();
  }
  vFab.setVisibility(View.VISIBLE);
  ViewCompat.setX(vFab, mFabInfo.relativeTopLeft.x);
  ViewCompat.setY(vFab, mFabInfo.relativeTopLeft.y);
  vSheetContainer.setVisibility(View.GONE);
  vOverlay.setVisibility(View.GONE);
}
 

public static void setY(final @NonNull View v, final int y) {
    if (Build.VERSION.SDK_INT >= 11) {
        ViewCompat.setY(v, y);
    } else {
        ViewGroup.MarginLayoutParams params =
            (ViewGroup.MarginLayoutParams) v.getLayoutParams();
        params.topMargin = y;
        v.setLayoutParams(params);
    }
}
 

public static void setY(final @NonNull View v, final int y) {
  if (VERSION.SDK_INT >= 11) {
    ViewCompat.setY(v, y);
  } else {
    ViewGroup.MarginLayoutParams params = (ViewGroup.MarginLayoutParams)v.getLayoutParams();
    params.topMargin = y;
    v.setLayoutParams(params);
  }
}
 

public void invalidate() {
  if (mIsCreated) {
    vOverlay.invalidate();
    vContent.invalidate();
    ViewCompat.setX(vSheetContainer, mFabInfo.bottomRight.x - vSheetContainer.getMeasuredWidth());
    ViewCompat.setY(vSheetContainer, mFabInfo.bottomRight.y - vSheetContainer.getMeasuredHeight());
  }
}
 

@Override
public void onAnimationUpdate(ValueAnimator animation) {
  View target = mTarget.get();
  if (target != null) {
    float degree = (float) animation.getAnimatedValue();
    float x = mArcMetric.getAxisPoint().x + mArcMetric.mRadius * Utils.cos(degree);
    float y = mArcMetric.getAxisPoint().y - mArcMetric.mRadius * Utils.sin(degree);
    ViewCompat.setX(target, x - target.getMeasuredWidth() / 2);
    ViewCompat.setY(target, y - target.getMeasuredHeight() / 2);
  }
}