我在我的一个库类中创建了一个静态方法:
public static void disableOrientationChange()
{
// force app to use only portrait mode
int directions = Display.DIRECTION_NORTH;
UiEngineInstance engineInstance = Ui.getUiEngineInstance();
if (engineInstance != null)
{
engineInstance.setAcceptableDirections(directions);
}
}
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诀窍是此代码仅适用于运行后创建的屏幕.因此,您必须在显示第一个屏幕之前运行代码.
我在调用Application.main(String args)
之前从我的方法调用此方法enterEventDispatcher()
.
public static void main(String[] args)
{
MyApp app = new MyApp();
/*
* BlackBerry OS 5.0.0
* Disable screen orientation changes
*/
ScreenUtils.disableOrientationChange();
// enters the event processing loop thread if required
if (!app.isHandlingEvents())
{
app.enterEventDispatcher();
}
}
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