UniRx学习之路（二）——UI应用实践

1.Subject使用技巧

public Button btn0;
public Button btn1;
public Button btn2;
public Button btn3;
public Button btn4;
private Subject<int> _currentBtn = new Subject<int>();

void InitializeItem(int index){
    OnShowItem(index);  
}

void OnShowItem(int index){
    _currentBtn.OnNext(index);
}

public IObservable<int> ShowInfoItem(){
  return _currentBtn.onClickAsObservable();        
}

private InfoListView view = new InfoListView();

public void Initialize(){
    view.ShowInfoItem().Subscribe(onNext: x=>{
        print(x);
    }

}

 Subject同时充当了Observer和Observable的角色

2.将数据绑定到Text显示

public Text text;
public Slider slider;
public Button btn;
public ScrollRect scroll;

void Start(){
  slider.OnValueChangedAsObservable().Where(x => x > 0.5f).
      SubscribeToText(ReturnText(),x =>((int)(slider.value * 100))
      .ToString());
      
  btn.OnClickAsObservable().SubscribeToText(ReturnText(),
      x => btn.gameObject.transform.GetChild(0).
      GetComponent<Text>().text);
    
  scroll.OnScrollAsObservable().SubscribeToText(ReturnText(),
      x  => x.ToString());
}    

Text ReturnText(){
  return text;  
}

 3.Interactable相互影响作用

public Toggle toggle;
public Button btn;

void Start(){
  toggle.OnValueChangedAsObservable().SubscribeToInteractable(btn);  
}

 toggle是一个勾选选项，当toggle被勾选时，btn可以使用；当toggle不被勾选时，btn不起作用