Android-保存Bitmap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();
        }
}