Android实现对Dialog的截图并保存在本地

直接上代码:

public class TestDilaog extends Dialog {
public TestDilaog(@NonNull Context context) {
super(context, R.style.UpdateDialogTheme);
    }

@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
        setContentView(R.layout.xxxx);
//必须加这两句代码
this.getWindow().getDecorView().setDrawingCacheEnabled(true);
this.getWindow().getDecorView().buildDrawingCache();
    }
//将图像保存到SD卡中
public void saveMyBitmap(){
if(!ImageTools.checkSDCardAvailable()){
            T.show("SD卡不可用,保存失败");
return;
        }
        String currentPath= DemoApplication.GalleryPhoto+"/" +System.currentTimeMillis() + ".jpg";
        File f = new File(currentPath);
try {
            f.createNewFile();
        } catch (IOException e) {
// TODO Auto-generated catch block
        }
        FileOutputStream fOut = null;
try {
            fOut = new FileOutputStream(f);
        } catch (Exception e) {
            e.printStackTrace();
        }
//获取bitmap关键代码
        View dialogView = this.getWindow().getDecorView();
        Bitmap dialogBitmap=dialogView.getDrawingCache();
        dialogBitmap.compress(Bitmap.CompressFormat.JPEG, 100, fOut);
try {
            fOut.flush();
        } catch (IOException e) {
            e.printStackTrace();
        }
try {
            fOut.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
        Toast.makeText(context,"图片保存到了"+currentPath,Toast.LENGTH_LONG).show();
        MediaScannerConnection.scanFile(context, new String[]{currentPath}, null, null);
    }
}