Unity3D postprocess script c#

CustomPostprocessScript.cs

#if UNITY_IPHONE

using UnityEngine;
using UnityEditor;
using UnityEditor.Callbacks;

using System;
using System.Diagnostics;

using UnityEditor.iOS.Xcode;
using System.IO;

public class CustomPostprocessScript : MonoBehaviour
{

	//IMPORTANT!!!
	//100 is order , it means this one will execute after e.g 1 as default one is 1 
	//it means our script will run after all other scripts got run
	[PostProcessBuild(100)]
	public static void OnPostprocessBuild(BuildTarget target, string pathToBuildProject)
	{
		UpdateInfoPlist (pathToBuildProject);	

		string objCPath = Application.dataPath;
		
		Process myCustomProcess = new Process();		
		myCustomProcess.StartInfo.FileName = "python";
        myCustomProcess.StartInfo.Arguments = string.Format("Assets/Editor/post_process.py \"{0}\" \"{1}\"", pathToBuildProject, objCPath);
        myCustomProcess.StartInfo.UseShellExecute = false;
        myCustomProcess.StartInfo.RedirectStandardOutput = false;
		myCustomProcess.Start(); 
		myCustomProcess.WaitForExit();
       
	}

	private static void AddIOSAppTransportSecurity(string path){
		//Get Plist
		string plistPath = Path.Combine(path, "Info.plist");   
		PlistDocument plist = new PlistDocument();
		plist.ReadFromString (File.ReadAllText (plistPath));
		
		//Get Root
		PlistElementDict rootDict = plist.root;
		
		//Add ATS fix
		PlistElementArray LSApplicationQueriesSchemes = rootDict.CreateArray("LSApplicationQueriesSchemes");
		LSApplicationQueriesSchemes.AddString ("fb");
		LSApplicationQueriesSchemes.AddString ("instagram");
		LSApplicationQueriesSchemes.AddString ("tumblr");
		LSApplicationQueriesSchemes.AddString ("twitter");
		LSApplicationQueriesSchemes.AddString ("twitter");
		LSApplicationQueriesSchemes.AddString ("fbapi");
		LSApplicationQueriesSchemes.AddString ("fbapi20130410");
		LSApplicationQueriesSchemes.AddString ("fbapi20130702");
		LSApplicationQueriesSchemes.AddString ("fbapi20131010");
		LSApplicationQueriesSchemes.AddString ("fbapi20131219");
		LSApplicationQueriesSchemes.AddString ("fbapi20140410");
		LSApplicationQueriesSchemes.AddString ("fbapi20140116");
		LSApplicationQueriesSchemes.AddString ("fbapi20150313");
		LSApplicationQueriesSchemes.AddString ("fbapi20150629");
		LSApplicationQueriesSchemes.AddString ("fbauth");
		LSApplicationQueriesSchemes.AddString ("fbauth2");
		LSApplicationQueriesSchemes.AddString ("fb-messenger-api20140430");
		
		PlistElementDict NSAppTransportSecurity = rootDict.CreateDict("NSAppTransportSecurity");
		NSAppTransportSecurity.SetBoolean("NSAllowsArbitraryLoads",true);
		PlistElementDict NSExceptionDomains = NSAppTransportSecurity.CreateDict("NSExceptionDomains");
		PlistElementDict url1 =  NSExceptionDomains.CreateDict ("akamaihd.net");
		url1.SetBoolean ("NSIncludesSubdomains",true);
		url1.SetBoolean ("NSThirdPartyExceptionRequiresForwardSecrecy", false);
		PlistElementDict url2 =  NSExceptionDomains.CreateDict ("facebook.com");
		url2.SetBoolean ("NSIncludesSubdomains",true);
		url2.SetBoolean ("NSThirdPartyExceptionRequiresForwardSecrecy", false);
		PlistElementDict url3 =  NSExceptionDomains.CreateDict ("fbcdn.net");
		url3.SetBoolean ("NSIncludesSubdomains",true);
		url3.SetBoolean ("NSThirdPartyExceptionRequiresForwardSecrecy", false);
		PlistElementDict url4 =  NSExceptionDomains.CreateDict ("localhost");
		url4.SetBoolean ("NSExceptionAllowsInsecureHTTPLoads",true);
		
		//WriteFile
		File.WriteAllText (plistPath, plist.WriteToString ());
	}

	private static void AddSplitScreenOnIpad(string path){
		//Get Plist
		string plistPath = Path.Combine(path, "Info.plist");   
		PlistDocument plist = new PlistDocument();
		plist.ReadFromString (File.ReadAllText (plistPath));
		
		//Get Root
		PlistElementDict rootDict = plist.root;

		//Add LauchScreen
		rootDict.SetString ("UILaunchStoryboardName","LaunchScreen");

		//Add Orieantation
		PlistElementArray UISupportedInterfaceOrientationsIpad = rootDict.CreateArray("UISupportedInterfaceOrientations~ipad");
		UISupportedInterfaceOrientationsIpad.AddString ("UIInterfaceOrientationPortrait");
		UISupportedInterfaceOrientationsIpad.AddString ("UIInterfaceOrientationPortraitUpsideDown");
		UISupportedInterfaceOrientationsIpad.AddString ("UIInterfaceOrientationLandscapeLeft");
		UISupportedInterfaceOrientationsIpad.AddString ("UIInterfaceOrientationLandscapeRight");

		//WriteFile
		File.WriteAllText (plistPath, plist.WriteToString ());
	}

	private static void UpdateInfoPlist(string path){
		AddIOSAppTransportSecurity (path);
		AddSplitScreenOnIpad (path);
	}
}

#endif