How to make a Cydia tweak… follow this guide!

This is a Tutorial on how to get started with Theos on your iDevice made by c0redev!

Things you need before you can start developing Tweaks and apps on your iDevice:

An jailbroken iDevice

Basic Objective-C and C++ knowledge (If you don’t have the basic knowledge go ahead and get a programmer book for Objective-C and C++.

Add the 5 following repos to Cydia

http://nix.howett.net/theos/

http://iNinjas.com/repo/

http://coredev.nl/cydia

http://repo.insanelyi.com/

http://l1nd3nlr.iP1neapple.com

Before you start download the packages from cydia you need to be “Developer” in cydia. To change from “User” to “Developer” go to Manage -> Settings -> Developer.

The things you need to download from Cydia is:

iFile

Theos

Perl

BigBoss Recommended hacker tools

Compile C Apps iOS4

Class Dump Z

MobileTerminal (From iNinjas Repo)

To get started you will have to download the iPhone SDK 3.

To do so open MobileTerminal

Login as root to do so type:

su

Enter your password default: alpine

installSDK3

Let it do its thing

Note that the iPhone SDK3 is about 300MB so use a Wi-Fi Connection

Now lets make a new Project using Theos.

In MobileTerminal login as root

cd /var/theos/bin

/var/theos/bin/nic.pl

Choose 5 iPhone/Tweak

Enter project name: Test

Package name: com.c0redev.test

Maintainer Name: c0redev

MobileSubstrate Bundle: This depends on what header files you will use. If you want to make a simple popup alert i should say com.apple.UIKit instead of com.apple.springboard.

Now go into iFile /var/theos/bin/test/

Open up Tweak.xm in Text viewer and start coding your Tweak!

To look up what header files you wanna use go into /var/SDK/System/Library/Frameworks

If you need some help on how to write tweaks use chpwns open source tweaks as help!

https://github.com/chpwn

Now it’s time to build the Tweak

In Terminal go to the directory where you made tour tweak ( cd /var/theos/bin/test/ )

Now type this:

make

Now we need to install it, type:

make package

Then install it type:

make install

Now the Springboard should restart and your tweak is installed.

Test your Tweak!

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If you get errors when you try to “make” your Tweak go to the Makefile and add the following line before everything:

GO_EASY_ON_ME = 1

Please add me on Twitter @c0redev

https://twitter.com/#!/c0redev

If you have any questions please ask me on Twitter!