[英]Android: start Activity always in portrait but recognize orientation change
I want to start a new activity/intent always in portrait orientation (even if the device is held in landscape) 我想始终以纵向方向开始新的活动/意图(即使设备横向放置)
If I use setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
如果我使用
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
the Activity is locked to portrait, but I want to recognize orientational changes. 活动被锁定为人像,但我想识别方向的变化。
So I think I have to call setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
所以我想我必须打电话给
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
on the first start, when the activity is created, an need an listener to remove this restriction. 在第一次创建活动时,需要一个侦听器来消除此限制。
But in which methods should I do that? 但是我应该用哪种方法呢? In the constructor , or in
onCreate()
or elsewhere??? 在构造函数中,还是在
onCreate()
或其他地方???
@Override
public void onConfigurationChanged(Configuration newConfig) {
// TODO Auto-generated method stub
super.onConfigurationChanged(newConfig);
System.out.println("on config change method called.");
if(Configuration.ORIENTATION_LANDSCAPE==newConfig.orientation)
{
//Portatrate to landscape...
System.out.println("on config change method called portraite mode.");
}
else if(Configuration.ORIENTATION_PORTRAIT==newConfig.orientation)
{
//Landscape to portraite....
System.out.println("on config change method called landscape mode.");
}
}
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