正文
一、结构
public interface WindowManager extends android.view.ViewManager
android.view.WindowManager
二、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
三、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view的WindowManager.LayoutParams的令牌(token)无效,则会抛出该异常
四、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)
是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
五、补充
public
class
WindowManagerDemo
extends
Activity {
/**
Called when the activity is first created.
*/
@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
"
);
}
}
本文转自over140 51CTO博客,原文链接:http://blog.51cto.com/over140/582416,如需转载请自行联系原作者