Android: Rotate image in ImageView by 90degrees but without delay

Question

I am developing a game where a user needs to tap on the image in ImageView to rotate it. On each tap image rotates by 90 degrees in clockwise direction. But image is taking

Answer 1

Short method

View.animate().rotation(90).setDuration(0);

Answer 2

I also tried to do it once and couldn't find any other solution but using animation. Here how I'd do.

private void rotate(float degree) {
    final RotateAnimation rotateAnim = new RotateAnimation(0.0f, degree,
            RotateAnimation.RELATIVE_TO_SELF, 0.5f,
            RotateAnimation.RELATIVE_TO_SELF, 0.5f);

    rotateAnim.setDuration(0);
    rotateAnim.setFillAfter(true);
    imgview.startAnimation(rotateAnim);
}

Answer 3

did you try to use a custom view extending imageview and rotating the image in a background thread?

Answer 4

You don't need to rotate the object, rotating the view should be enough. If you are aiming API>=11 you can always do this.

mImageView.setRotation(angle);

Cheers.