不改变已进入的方向

Question

在我的应用中，您可以在两个方向上都输入一个活动，但我希望在一个屏幕上输入，如果您以一个方向输入，则不能更改为另一个方向，直到退出该活动

Answer 1

You can tell the system that your activity will handle a configuration change, such as an orientation change.

Edit your <activity> element in your manifest file to include the android:configChanges attribute with a value that represents the configuration you want to handle:

<activity android:name=".MyActivity" android:configChanges="orientation">

When your activity starts -lets say on onStart() or onResume() , capture what is the current orientation, so you can use that value during the execution of the activity to make any decision based on that

private int initialOrientation;
@Override
public void onResume(){
    super.onResume();
    initialOrientation = getResources().getConfiguration().orientation;

}

Then in the activity, define a listener for the configuration listener, in which you set the orientation to what it was, and the orientation will stay as it is.

@Override
public void onConfigurationChanged(Configuration newConfig)
{
    super.onConfigurationChanged(newConfig);
    setRequestedOrientation(initialOrientation);
}