Android中将Bitmap对象以PNG格式保存在内部存储中

private void saveBitmap(Bitmap bitmap,String bitName) throws IOException
    {
        File file = new File("/sdcard/DCIM/Camera/"+bitName);
        if(file.exists()){
            file.delete();
        }
        FileOutputStream out;
        try{
            out = new FileOutputStream(file);
            if(bitmap.compress(Bitmap.CompressFormat.PNG, 90, out))
            {
                out.flush();
                out.close();
            }
        }
        catch (FileNotFoundException e)
        {
            e.printStackTrace();
        }
        catch (IOException e)
        {
            e.printStackTrace();
        }
    }