C# App1

using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Data;
using System.Drawing;
using System.Linq;
using System.Text;
using System.Threading.Tasks;
using System.Windows.Forms;

using System.IO;

namespace Public_ID_Replacer
{
    public partial class Form1 : Form
    {
        FolderBrowserDialog folderBrowserDialog;
        string path = "";
        public Form1()
        {
            InitializeComponent();
        }
        private void Form1_Load(object sender, EventArgs e)
        {
            folderBrowserDialog = new FolderBrowserDialog();
        }
        private void btnApk_Click(object sender, EventArgs e)
        {
            getFolderDirectory(txtApk);
        }

        private void btnFramework1_Click(object sender, EventArgs e)
        {
            getFolderDirectory(txtFramework1);
        }
        private void btnFramework2_Click(object sender, EventArgs e)
        {
            getFolderDirectory(txtFramework2);
        }
        private void getFolderDirectory(TextBox textBox)
        {
            if (folderBrowserDialog.ShowDialog() == DialogResult.OK)
            {
                path = folderBrowserDialog.SelectedPath;
                textBox.Text = path;
            }
        }

        private void btnReplace_Click(object sender, EventArgs e)
        {
            string[] apkPublicIDs = File.ReadAllLines(txtApk.Text + "/res/values/public.xml");
            string[] allfiles = Directory.GetFiles(txtApk.Text + "/smali/" + readPackageName(), "*.smali*", SearchOption.AllDirectories);
            string newline = "";

            foreach (var file in allfiles)
            {
                FileInfo info = new FileInfo(file);

                string[] lines = File.ReadAllLines(info.FullName);

                for (int i = 0; i < lines.Length; i++)
                {
                    if (lines[i].Contains("0x"))
                    {
                        newline = lines[i].Substring(lines[i].IndexOf("0x"), lines[i].Length - lines[i].IndexOf("0x"));
                        if(newline.Length == 9)
                        {
                            newline = newline.Insert(newline.IndexOf("x") + 1, "0");
                            readPortFrameworkXmlFile(newline);
                        }
                        else if(newline.Length == 10)
                        {
                            if (!apkPublicIDs.Any(str => str.Contains(newline)))
                            {
                                newline = newline.Insert(newline.IndexOf("x") + 1, "0");
                                lines[i]= readPortFrameworkXmlFile(newline);
                            }
                        }
                    }
                }

                File.WriteAllLines(info.FullName, lines);
            }
        }

        private string readPortFrameworkXmlFile(string id)
        {
            string[] lines = File.ReadAllLines(txtFramework1.Text + "/res/values/public.xml");
            string newline = "", name = "";

            foreach (string line in lines)
            {
                if (line.Contains(id))
                {
                    newline = line.Substring(line.IndexOf("name="), line.Length - line.IndexOf("name=") - 2);
                    name = newline.Substring(newline.IndexOf("name=") + 6, newline.Length - 24);

                    return readBaseFrameworkXmlFile(name);
                }
            }

            return "";
        }
        private string readBaseFrameworkXmlFile(string idName)
        {
            string[] lines = File.ReadAllLines(txtFramework2.Text + "/res/values/public.xml");
            string newline = "", id = "";

            foreach (string line in lines)
            {
                if (line.Contains(idName))
                {
                    newline = line.Substring(line.IndexOf("id="), line.Length - line.IndexOf("id=") - 2);
                    id = newline.Substring(newline.IndexOf("id=") + 4, 10);

                    return id;
                }
            }

            return "";
        }
        private string readPackageName()
        {
            string[] androidManifest = File.ReadAllLines(txtApk.Text + "/AndroidManifest.xml");
            string packageName = androidManifest[0].Substring(androidManifest[0].IndexOf("package="), androidManifest[0].Length - androidManifest[0].IndexOf("package="));
            packageName = packageName.Substring(packageName.IndexOf("=") + 2, packageName.Length - (packageName.IndexOf("=") + 4));
            packageName = packageName.Replace(".", "/");
            MessageBox.Show(packageName);

            return packageName;
        }
    }
}