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문자


WindowManager

版本:Android 2.3 r1

 

结构

继承关系

public interface WindowManager extends android.view.ViewManager

        

android.view.WindowManager

 

类概述

该接口用于与窗口管理器交互。通过 Context.getSystemService(Context.WINDOW_SERVICE)可以获取到WindowManager的实例。(译者注:如:WindowManager wm = (WindowManager)context.getSystemService(Context.WINDOW_SERVICE);

  参见

            getSystemService(String)

    WINDOW_SERVICE

 

内部类

public static class  WindowManager.LayoutParams

(译者注:继承自android.view.ViewGroup.LayoutParams

 

public static class   WindowManager.BadTokenException       

添加view时,如果该viewWindowManager.LayoutParams的令牌(token)无效,则会抛出该异常

 

公共方法

public abstract Display  getDefaultDisplay()

         获取默认的显示对象

                   返回值

                            默认的Display对象

                  

public abstract void removeViewImmediate (View view)

removeView(View) 的一个特殊扩展,在方法返回前能够立即调用该视图层次的View.onDetachedFromWindow() 方法。 不适用于一般的程序;如果您要正确无误的使用它,那您就需要格外小心了。

参数

                            view 需要移除的视图

 

补充

文章链接

WindowManagerDemo

         示例代码(来自文章链接的代码)

        public class WindowManagerDemo extends Activity {

       

        @Override

        public void onCreate(Bundle savedInstanceState) {

               super.onCreate(savedInstanceState);

               setContentView(R.layout.main);

               TextView textView = (TextView) findViewById(R.id.label);

               WindowManager windowManager = (WindowManager)

               getSystemService(Context.WINDOW_SERVICE);

 

               // print the current window's width and height on the title, eg: 320*480

        setTitle(windowManager.getDefaultDisplay().getWidth() + "*"

                               + windowManager.getDefaultDisplay().getHeight());

               textView.setText("See the Title");

        }

}

 

 


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