Question

I am trying to rotate Img(Bitmap), by the fallowing code. its working fine up to 5-6 rotations, after that am getting OME?

private void rotateImg() {
    Matrix matrix = new Matrix();
    matrix.postScale(curScale, curScale);
    matrix.postRotate(curRotate);
    try {
        temp = Bitmap.createBitmap(temp, 0, 0, temp.getWidth(),
                temp.getHeight(), matrix, true);
        setImage.setImageBitmap(temp);
    } catch (OutOfMemoryError e) {
        curRotate = curRotate - 45.0f;
        Toast.makeText( this,"Out Of Memory",Toast.LENGTH_LONG).show();
    }
}

here “test” is an static bitmap file loaded from SDCard.

Answer 1

Why are you creating the bitmap every time? Is there any specific reason?
If not use the following code:

private void rotateImg() {
    int cx = temp.getWidth() / 2;
    int cy = temp.getHeight() / 2;
    matrix.preTranslate(-cx, -cy);
    matrix.postRotate(curRotate);
    matrix.postTranslate(cx, cy);
    setImage.setImageMatrix(matrix);
}