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Question by jade1209 · May 28, 2016 at 12:51 PM · uiguibuttoncanvas

Problem with creating button via script.

// Sorry, I posted to the wrong room.

I have a code that take canvas and button prefab but after I run the code, 1) The button is not inside the canvas I instantiated. 2) I don't see any button being instantiated in my game scene (but there is one in hierarchy )

 public GameObject buttonPrefab;
     public GameObject canvasPrefab;
 
     // Use this for initialization
     void Start () {
 
         Canvas canvas = Instantiate (canvasPrefab, Vector3.zero, Quaternion.identity) as Canvas;
         Button button = Instantiate (buttonPrefab, Vector3.zero, Quaternion.identity) as Button;
         button.transform.SetParent (canvas.transform,false);
 
     }

Thank you very much.

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Answer by saud_ahmed020 · May 30, 2016 at 09:39 AM

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 
 public class Test: MonoBehaviour {
 
     public GameObject canvasPrefab;
     public GameObject buttonPrefab;
 
 
     // Use this for initialization
     void Start () {
 
 
         GameObject button = Instantiate (buttonPrefab, Vector3.zero, Quaternion.identity) as GameObject;
         GameObject canvas = Instantiate (canvasPrefab, Vector3.zero, Quaternion.identity) as GameObject;
 
         button.GetComponent<RectTransform>().SetParent (canvas.GetComponent<RectTransform>());
 
     }
 }
   

@jade1209 You are Instantiate the gameobject as Button and Canvas. You will get Null Reference exception. Just Instantiate as GameObject like I post the code then use these GameObjects by getting their components.

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avatar image jade1209 · May 31, 2016 at 09:55 AM 0
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Thank you very much, it now works :))

avatar image saud_ahmed020 jade1209 · May 31, 2016 at 10:20 AM 0
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@jade1209 Welcome. If you find it helpful then kindly accept and vote it, so other will find it helpful. :)

avatar image Mmmpies saud_ahmed020 · May 31, 2016 at 11:54 AM 0
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Accepted as correct

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