How to load prefabs/assets from a C# script in iOS

I'm using the Resources.Load() function to load prefabs from script and everything works fine when I build and run the game in Unity, however, when I build the game for iOS no prefabs are loaded and the debug console shows:

Code (csharp):

1. ArgumentException: The prefab you want to instantiate is null.
2.   at UnityEngine.Object.CheckNullArgument (System.Object arg, System.String message) [0x00000] in <filename unknown>:0
3.   at UnityEngine.Object.Instantiate (UnityEngine.Object original, Vector3 position, Quaternion rotation) [0x00000] in <filename unknown>:0

I've also tried using the StreamingAssets method, creating a StreamingAssets folder and using the code:

Code (csharp):

1. string iosPath = Application.dataPath + "/Raw/";
2. Object blockPrefab = Resources.LoadAssetAtPath(iosPath + "blockPrefab.prefab", typeof(GameObject));

Even if I print out the contents of the files in 'iospath', the prefabs do exist in that folder, however, nothing loads.

Any reason why the prefab is null?

* I'm using the free version of Unity

 

Is the prefab in the build?
If nothing references it, it won't be included in the build, you have to put it in a resources-folder.

 

What do you mean by including the prefab in the build? I have the prefab in the Asset folder (resource folder?). I also created folders: Asset/Raw, Asset/Resources, Asset/StreamingAssets and copied the prefabs in there as well.

I didn't add the prefab in the GameScene hierarchy since I want to load it from script.

 

This is the code I'm using:

Code (csharp):

1.     string iosPath = Application.dataPath + "/Raw/";
2.     Object blockPrefab = Resources.LoadAssetAtPath(iosPath + "blockPrefab.prefab", typeof(GameObject));
3. GameObject.Instantiate(blockPrefab, position, rotation);

 

I finally got it to load. I was using Resources.LoadAssetAtPath (which only works in the editor) instead of Resources.Load.

http://docs.unity3d.com/Documentation/ScriptReference/Resources.html