Android 代码实现屏幕截图功能

private void screenshot()
{
// 获取屏幕
    View dView = getWindow().getDecorView();
    dView.setDrawingCacheEnabled(true);
    dView.buildDrawingCache();
    Bitmap bmp = dView.getDrawingCache();
    if (bmp != null)
    {
try {
// 获取内置SD卡路径
            String sdCardPath = Environment.getExternalStorageDirectory().getPath();
            // 图片文件路径
            String filePath = sdCardPath + File.separator + "screenshot.png";

            File file = new File(filePath);
            FileOutputStream os = new FileOutputStream(file);
            bmp.compress(Bitmap.CompressFormat.PNG, 100, os);
            os.flush();
            os.close();
        } catch (Exception e) {
        }
    }
}