对话框样式Activity获得窗口外点击事件

最新推荐文章于 2021-05-27 00:58:21 发布

转载最新推荐文章于 2021-05-27 00:58:21 发布 · 1k 阅读

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本文介绍了如何在Android应用中防止用户通过触摸对话框或活动以外的区域来关闭对话框或活动。对于API11及更高版本，可以通过设置setFinishOnTouchOutside(false)实现。对于API11之前的版本，则需要通过设置窗口标志并重写onTouchEvent方法来监听外部触摸事件。

在API11之后添加了setFinishOnTouchOutside()方法，只需要在onCreate()方法中调用：

this.setFinishOnTouchOutside(false);

API11之前

public class MyActivity extends Activity {

 @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Make us non-modal, so that others can receive touch events.
    getWindow().setFlags(LayoutParams.FLAG_NOT_TOUCH_MODAL, LayoutParams.FLAG_NOT_TOUCH_MODAL);

    // ...but notify us that it happened.
    getWindow().setFlags(LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH, LayoutParams.FLAG_WATCH_OUTSIDE_TOUCH);

    // Note that flag changes must happen *before* the content view is set.
    setContentView(R.layout.my_dialog_view);
  }

  @Override
  public boolean onTouchEvent(MotionEvent event) {
    // If we've received a touch notification that the user has touched
    // outside the app, finish the activity.
    if (MotionEvent.ACTION_OUTSIDE == event.getAction()) {
      finish();
      return true;
    }

    // Delegate everything else to Activity.
    return super.onTouchEvent(event);
  }
}