Working in Editor, but Bad_Access Error in Xcode on iOS Device

Can you guys help me figure out what's up with this code? It's a scene selection menu. I have an array of buttons. If you click a button, it uses the GetLevelNumber() to figure out which level number it is, and then uses ClickLevelButton() to load that level. I open to better ideas on how to do this, but right now in the editor, it works perfectly with no warnings or errors, no null exceptions. But, when I build to the device, it hangs up when I press a button, and Xcode gives a Bad_Access Error on the object that has this script assigned to it. Can any of you see what I'm missing?

Thanks in advance!

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.UI;
3. using System;
4. using System.Collections;
5.  
6. public class UI_Manager : MonoBehaviour
7. {
8.     public DataControl dataScript;
9.  
10.     public GameObject[] levelButtons;
11.     public Text levelTextObject;
12.     public string levelString;
13.     static public int levelNumber;
14.     public Text loadLevelIndicator;
15.     public Text arrayNumberIndicator;
16.  
17.     void Start()
18.     {
19.         dataScript = GameObject.FindGameObjectWithTag("DataControl").GetComponent<DataControl>();
20.         Debug.Log ("Current Level Number is: " + levelNumber);
21.         dataScript.Load();
22.  
23.     }
24.  
25.     public void ClickLevelButton(GameObject button)
26.     {
27.         GetLevelNumber(button);
28.         Application.LoadLevel("Level" + levelString);
29.     }
30.  
31.     public void GetLevelNumber(GameObject button)
32.     {
33.         levelTextObject = button.GetComponent<Text>();
34.         levelString = levelTextObject.text;
35.         bool isSuccess = int.TryParse(levelString, out levelNumber);
36.         if(isSuccess)
37.         {
38.             loadLevelIndicator.text = "Load Level: " + levelNumber;
39.             arrayNumberIndicator.text = "level Buttons[" + (levelNumber - 1) + "]";
40.         }
41.         else
42.         {
43.             loadLevelIndicator.text = "Can't Get Number!";
44.         }
45.     }
46.  
47.     public void LoadMenu()
48.     {
49.         if(dataScript.firstPlay)
50.         {
51.             //play movie
52.  
53.             //dataScript.firstPlay = false;
54.             //dataScript.Save();
55.             Handheld.PlayFullScreenMovie("Intro.mp4", Color.white, FullScreenMovieControlMode.Hidden, FullScreenMovieScalingMode.AspectFit);
56.             Application.LoadLevel("LevelSelect01");
57.         }
58.         else
59.         {
60.             Debug.Log ("NOT FIRST PLAY: Loading Level Selection Screen...");
61.             Application.LoadLevel("LevelSelect01");
62.         }
63.     }
64. }

 

Step through the debugger in Xcode to identify the line that throws EXC_BAD_ACCESS. Unity tends to be more forgiving. For example, this doesn't raise any errors in Unity:

Code (csharp):

1. bool ToBool(object o) {
2.     try {
3.         return (bool) o;
4.     } catch {
5.         return false;
6.     }
7. }

I'm not saying the code above is the right way to code a typecast to bool, but the point is that it doesn't throw errors. However, Xcode will give EXC_BAD_ACCESS on line 3 instead of letting try...catch catch it.

In your code, it's probably a null reference that Unity handles more gracefully than Xcode, or an issue in int.TryParse().

 

That was it. The int.TryParse() wasn't liked on my device. I have rewritten my code to just use int's from the beginning, and it works now. Thanks!

 

Happy to help!