Unity > Xcodeビルド時 pbx, plistを編集できた

AddFrameworkPostProcessBuild

using UnityEngine;
using System.Collections;
using System.IO;
using UnityEditor;
using UnityEditor.Callbacks;
using UnityEditor.iOS.Xcode;

public class AddFrameworkPostProcessBuild : MonoBehaviour {

	[PostProcessBuild ]
	public static void OnPostprocessBuild(BuildTarget buildTarget, string path)
	{
		if (buildTarget != BuildTarget.iPhone) return;

		string projPath = path + "/Unity-iPhone.xcodeproj/project.pbxproj";

		PBXProject proj = new PBXProject();
		proj.ReadFromFile(projPath);

		string target = proj.TargetGuidByName("Unity-iPhone");

		proj.AddFrameworkToProject(target, "ImageIO.framework",    false);
		proj.AddBuildProperty	  (target, "LIBRARY_SEARCH_PATHS", "$(inherited)");
		proj.AddBuildProperty	  (target, "LIBRARY_SEARCH_PATHS", "$(SRCROOT)");
		proj.AddBuildProperty	  (target, "LIBRARY_SEARCH_PATHS", "$(SRCROOT)/Libraries");
		proj.WriteToFile(projPath);

		var plistPath = Path.Combine(path, "Info.plist");
		var plist = new PlistDocument();
		plist.ReadFromFile(plistPath);

		//HTTP接続を行う
		PlistElementDict rootDict = plist.root;
		PlistElementDict urlTypes = rootDict.CreateDict("NSAppTransportSecurity");
		urlTypes.SetBoolean("NSAllowsArbitraryLoads", true);

		//plist.WriteToFile(plistPath);
		// Write to file
		File.WriteAllText(plistPath, plist.WriteToString());

	}
}