Android 实现截屏功能的实例

实现代码:

public class ScreenShot {
  // 获取指定Activity的截屏,保存到png文件
  private static Bitmap takeScreenShot(Activity activity) {
    // View是你需要截图的View
    View view = activity.getWindow().getDecorView();
    view.setDrawingCacheEnabled(true);
    view.buildDrawingCache();
    Bitmap b1 = view.getDrawingCache();

    // 获取状态栏高度
    Rect frame = new Rect();
    activity.getWindow().getDecorView().getWindowVisibleDisplayFrame(frame);
    int statusBarHeight = frame.top;
    Log.i("TAG", "" + statusBarHeight);

    // 获取屏幕长和高
    int width = activity.getWindowManager().getDefaultDisplay().getWidth();
    int height = activity.getWindowManager().getDefaultDisplay()
        .getHeight();
    // 去掉标题栏
    // Bitmap b = Bitmap.createBitmap(b1, 0, 25, 320, 455);
    Bitmap b = Bitmap.createBitmap(b1, 0, statusBarHeight, width, height
        - statusBarHeight);
    view.destroyDrawingCache();
    return b;
  }

  // 保存到sdcard
  private static void savePic(Bitmap b, String strFileName) {
    FileOutputStream fos = null;
    try {
      fos = new FileOutputStream(strFileName);
      if (null != fos) {
        b.compress(Bitmap.CompressFormat.PNG, 90, fos);
        fos.flush();
        fos.close();
      }
    } catch (FileNotFoundException e) {
      e.printStackTrace();
    } catch (IOException e) {
      e.printStackTrace();
    }
  }

  // 程序入口
  public static void shoot(Activity a) {
    ScreenShot.savePic(ScreenShot.takeScreenShot(a), "sdcard/xx.png");
  }
}

需要注意的是,shoot方法只能在view已经被加载后方可调用。

或者在 以下方法这里调用。

 @Override
  public void onWindowFocusChanged(boolean hasFocus) {
    // TODO Auto-generated method stub
    super.onWindowFocusChanged(hasFocus);
    ScreenShot.shoot(this);
  }

以上就是Android截屏的实例,如有疑问请留言或者到本站社区交流讨论,感谢阅读,希望能帮助到大家,谢谢大家对本站的支持!

02-08 08:38