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();  
        }  
}