Android 在 BroadcastReceiver 中使用 getWindowManager()
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using getWindowManager() inside BroadcastReceiver
提问by Ton
I am trying to use getWindowManager()inside BroadcastReceiverand I get this error:
我正在尝试在getWindowManager()内部使用BroadcastReceiver，但出现此错误：
"The method getWindowManager()is undefined for the type MyReceiver"
“该getWindowManager()类型的方法未定义MyReceiver”
I just need to get display.getWidth()and display.getHeight()
我只需要得到display.getWidth()和display.getHeight()
Any hints? Thanks a lot.
任何提示？非常感谢。
回答by Dawid Drozd
Simple code you only need context
简单的代码，你只需要上下文
DisplayMetrics metrics = new DisplayMetrics();
WindowManager windowManager = (WindowManager) context
.getSystemService(Context.WINDOW_SERVICE);
windowManager.getDefaultDisplay().getMetrics(metrics);
More info go to documentation
更多信息请参阅文档
Or you can use this one
或者你可以使用这个
context.getResources().getDisplayMetrics()
but read documentation
但阅读文档
Return the current display metrics that are in effect for this resource object. The returned object should be treated as read-only.
返回对该资源对象有效的当前显示指标。返回的对象应被视为只读。
回答by CommonsWare
getWindowManager()is a method on Activity. You cannot use this method. Please use getSystemService()to retrieve a WindowManager, as is described in the WindowManagerdocumentation.
getWindowManager()是一种方法Activity。您不能使用此方法。请使用getSystemService()检索 a WindowManager，如文档中所述WindowManager。
