1
我實現了按鈕來在galleryview中旋轉圖像，但有時它執行速度慢得多。我可以花20秒。有沒有辦法加快它，或者以更好的方式實現，然後我呢？如何加快圖像旋轉？
我的代碼
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");
}