드로어 블을 설정된 각도만큼 회전시키는 다음 코드가 있습니다.
public Drawable rotateDrawable(float angle, Context context)
{
Bitmap arrowBitmap = BitmapFactory.decodeResource(context.getResources(), R.drawable.generic2rb);
// Create blank bitmap of equal size
Bitmap canvasBitmap = arrowBitmap.copy(Bitmap.Config.ARGB_8888, true);
canvasBitmap.eraseColor(0x00000000);
// Create canvas
Canvas canvas = new Canvas(canvasBitmap);
// Create rotation matrix
Matrix rotateMatrix = new Matrix();
rotateMatrix.setRotate(angle, canvas.getWidth()/2, canvas.getHeight()/2);
//Draw bitmap onto canvas using matrix
canvas.drawBitmap(arrowBitmap, rotateMatrix, null);
return new BitmapDrawable(canvasBitmap);
}
새로운 SDK는
BitmapDrawable(canvasBitmap);
더 이상 사용되지 않습니다. 전혀 대안이 있습니까?
http://developer.android.com/reference/android/graphics/drawable/BitmapDrawable.html