mediacontroller - 向 MediaController 添加按钮

Question

我想向 MediaController 添加一个按钮。所以我扩展了 MediaController 类，创建了一个按钮并将其添加到框架布局中。但是新添加的按钮在运行时没有反射(reflect)。

请找到下面的代码

 public class VideoController extends MediaController {

private Button searchButton;
public VideoController(Context context) {
    super(context);

    searchButton = new Button(context);
    searchButton.setText("Search");
    FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
    params.gravity = Gravity.RIGHT;
    System.out.println("Adding a button");

    addView(searchButton, params);
    //updateViewLayout(this, params);
}

@Override
public void hide() {
}
}

我在这里做错了什么。任何建议都会有所帮助。

提前致谢。

Answer 1

您必须覆盖 setAnchorView在您的 VideoController类(class):

 @Override 
 public void setAnchorView(View view) {
     super.setAnchorView(view);

     Button searchButton = new Button(context);
     searchButton.setText("Search");
     FrameLayout.LayoutParams params = new FrameLayout.LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT);
     params.gravity = Gravity.RIGHT;
     addView(searchButton, params);
}