如何加快图像旋转？

Question

我实现了在galleryview中旋转图像的按钮，但有时候它的工作速度会逐渐变慢。我可以占用20秒。有没有办法加快速度或以更好的方式实施呢？

我的代码

gallery.setOnItemSelectedListener(new OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> parent, View view,
                    int position, long id) {
                onFront = (ImageView) view;

            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
                // TODO Auto-generated method stub

            }
        });

}

    public void rotateS(View v) {
        ImageView iv = onFront;
        Bitmap b = ((BitmapDrawable) iv.getDrawable()).getBitmap();
        Matrix matrix = new Matrix();
        matrix.postRotate(geg);
        Bitmap bMapRotate = Bitmap.createBitmap(b, 0, 0, b.getWidth(),
                b.getHeight(), matrix, true);
        iv.setImageBitmap(bMapRotate);
        geg = 90;
        Log.d("rorate", "yes");
    }

Answer 1

我将旋转逻辑移到了asyncTask