除了pushscreen以外，还有其他方法可以转到下一个屏幕吗？

Question

我想显示另一个屏幕，当用户点击一个ListField。

但是我的包含ListField的类扩展了MainScreen！

如何推到另一个屏幕？

除了pushScreen之外，还有其他方法可以转到另一个屏幕吗？

Answer 1

覆盖NavigationClick，下面是例子

public boolean navigationClick(int status,int time){ 
    Field focus = _countries.getLeafFieldWithFocus(); 
    if(focus instanceof ListField){ 
     ListField listField = (ListField)focus; 
     country = listField.getCallback().get(listField,listField.getSelectedIndex()).toString();//this will return the text clicked from the listfield 

    TransitionContext transition = new TransitionContext(TransitionContext.TRANSITION_FADE); 
    transition.setIntAttribute(TransitionContext.ATTR_DURATION,500); 
    transition.setIntAttribute(TransitionContext.ATTR_DIRECTION,TransitionContext.DIRECTION_DOWN); 
    transition.setIntAttribute(TransitionContext.ATTR_STYLE,TransitionContext.STYLE_PUSH); 

    UiEngineInstance engine = Ui.getUiEngineInstance(); 
    engine.setTransition(MyApp.scr,MyScreen._radio,UiEngineInstance.TRIGGER_PUSH,transition); 
    MyApp.scr=null; 
    UiApplication.getUiApplication().popScreen(UiApplication.getUiApplication().getActiveScreen()); 
    UiApplication.getUiApplication().pushScreen(MyScreen._radio); 
    } 

    return true;  
}