Android-保存Bit地图到SDCard

public void saveMyBitmap(String bitName, Bitmap mBitmap) throws IOException {          File f = new File("/sdcard/" + bitName + ".png");          f.createNewFile();          FileOutputStream fOut = null;          try {                  fOut = new FileOutputStream(f);          } catch (FileNotFoundException e) {                  e.printStackTrace();          }          mBitmap.compress(Bitmap.CompressFormat.PNG, 100, fOut);          try {                  fOut.flush();          } catch (IOException e) {                  e.printStackTrace();          }          try {                  fOut.close();          } catch (IOException e) {                  e.printStackTrace();          }  }