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テキスト


WindowManager

版本:Android 2.3 r1

结构

继承关系

public interfaceWindowManagerextendsandroid.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 classWindowManager.LayoutParams

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

public static classWindowManager.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 DisplaygetDefaultDisplay()

获取默认的显示对象

返回值

默认的Display对象

public abstract voidremoveViewImmediate(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)

publicclassWindowManagerDemoextendsActivity{

@Override

publicvoidonCreate(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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