Question by tqkiettk10 · Jan 29, 2016 at 02:52 AM · ui button onclick listener

Add listenner to button in loop error

I have 3 panel contain 20 Button/1 panel.

I try to add onclick listener to first panel but when I click on all buttons it alway print 19. I try to use local index variable but it donot work.

void Start() {

    for (int i = 0; i <20 ; i ++)
    {
             int index = i;
             arrayPanelIcon[0].transform.GetChild(index).GetComponent<Button>().onClick.AddListener( () => btnItem_click(index.ToString()));
     }

}

public void btnItem_click(string name) {

     Debug.Log("click: " + name);

}

Any help, please!

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tqkiettk10 · Jan 29, 2016 at 03:48 AM 0

if I use. It work. Why i cannot use loop? arrayPanelIcon[0].transform.GetChild(0).GetComponent().onClick.AddListener(() => btnItem_click("0")); arrayPanelIcon[0].transform.GetChild(1).GetComponent().onClick.AddListener(() => btnItem_click("1")); arrayPanelIcon[0].transform.GetChild(2).GetComponent().onClick.AddListener(() => btnItem_click("2"));