How to add GitHub Login button to your Android app using Kotlin | John Codeos – Blog with Free iOS & Android Development Tutorials

Creating the github login button

First, add a Button to your XML file. In this example, we have a button in the middle of the activity_main.xml.

How to contribute to an to existing git repository in android studio

In this section of the tutorial we will go through how to make code contributions to an existing Git repository using Android Studio.

How to create and contribute to a new git repository in android studio

In this section of the tutorial, I will show you how to create a new Git repository and contribute code changes to this Git repository inside Android Studio. After this I will show you how to create a repository in GitHub and how to push code changes into the GitHub repository using Android Studio.

How to merge a branch in android studio

In the previous section we showed using the pull request feature of GitHub to perform the code merge, however it is also possible to merge branches with Android Studio directly by performing the steps this section.

How to setup git in android studio

In the first part of the tutorial I will show you how to setup Android Studio with the source code version control tool Git.

Step 1: create a branch in android studio

First we will create a new branch in Android Studio, by selecting “VCS”, “Git”, “Branches…”.

Select “New Branch” from the pop up list.

Enter a new branch name then select the “OK” button.

Step 1: creating a git repository in android studio

In the first step in this section of the tutorial we will be creating a new Git repository in Android Studio. A Git repository is used to track the history of changes to files within your project.

Before we create a Git repository we will first need an Android Project. You can use an existing Android Project or create a new Android Project using by selecting the “File” menu, hovering over “New” and selecting “New Project” and following the wizard to create the project.

Once you have your Android Project open in Android Studio, select the “VCS” menu and click on the “Enable Version Control Integration…” menu item.

In the “Enable Version Control Integration” dialog, for the version control system select “Git” from the drop down list. Then select the “OK” button.

You have now successfully created your Git repository inside your Android Project.

Step 1: download and install git

Android Studio will use a Git executable installed on your local machine to for interact with your Git repository. If you don’t already have Git installed on your machine you will need to complete this step first, otherwise you can skip directly to Step 2.

To download Git, in your web browser navigate to the downloads page on the official Git website and download the appropriate version of Git based on your operating system.

Step 1: find or create a git repository to contribute to

The first step of this process is to have a Git repository you wish to contribute to. If you don’t have a repository already, what I have done for this section of the tutorial is to search for a code repository on GitHub that relates to Android using GitHub’s explorer.

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I ended up deciding on the GitHub repository Ultimate Android Reference by Aritra Roy which contains handy links to useful Android libraries that you can make use of when developing your Android Projects.

In order to take a copy of this repository so that I can make further changes to it at my own leisure I will need to fork the GitHub repository by selecting the “Fork” button.

Step 2: clone the git repository using android studio

Next before we can make contributions to the Git repository we will need to clone the repository using Android Studio.

To create a new project in Android Studio containing the code from the GitHub repository, select the “File” menu, hover over “New”, hover over “Project from Version Control…” and click “Git”.

You will be presented with a “Clone Repository” pop up screen asking for the URL of your Git repository to clone from.

To get the URL for your GitHub repository, open the GitHub repository you want to clone inside the web browser.

Step 2: contributing changes to a git repository in android studio

Now that you have created the Git repository, next we will cover contributing code changes to your Git repository.

In this section we will be using Git to add files from our Android Project to our code repository so that they can be tracked. This will involve two steps, the first step we will make a “git add” command within Android Studio which will stage files in our Android Project to be added to the Git repository.

To add files from your Android Project into to the Git repository you first need to get into the Project View in Android Studio. In the left side bar, select “Project view” from the drop down list.

Next right click on the Android Project name, hover over the “Git” menu item and click the “Add” menu item.

Next we will commit these added files to the Git repository.

In Git a commit is used to group together a series of changes made to a repository such as adding, removing or modifying files and taking a snapshot of the changes made into an entry in repository. Commits in Git require a commit message describing the change that is being made.

To commit these files that have been added using Android Studio, right click on the Android Project name, hover over the “Git” menu item and click the “Commit Directory…” menu item.

Next we are presented with a pop up showing the changes that are going to be committed to the Git repository.

Enter a “Commit Message” describing the change being made and select the “Commit” button.

Before Android Studio will start the commit transaction, it will do some form of code inspection which may result in some warnings or errors found. A “Code Analysis” dialog will appear after Android Studio has finished inspected the code which may show warnings and errors. If there are no errors, select “Commit”, otherwise correct the errors and retry the commit by repeating these steps.

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Step 2: make code changes on the new branch in android studio

Next we will make a code change on the newly created branch.

Step 3: creating a github repository

In this section of the tutorial we will be creating a GitHub repository to enable us to share code with other developers and access our code base over the internet.

Step 3: make code changes on a new branch using android studio

In this section we will describe how to use Git branches in Android Studio for contributing code changes. Code from these branches can then be merged with other branches easily. Branches allows developers to work independently on the same code base without causing disruption.

To get started we will create a new branch using Android Studio, select the “VCS” menu, hover over “Git” and select “Branches…”.

From the pop up list select “New Branch”.

Enter a name for this branch and select the “OK” button.

Step 3: merge changes from new branch into master branch using android studio

Next we will merge the changes made in the new branch to the master branch using Android Studio.

Step 4: push code changes to a github repository from android studio

In this section we will use Android Studio to push the changes made in our local Git repository into the GitHub repository that was created in step 3.

If we were to do this via the command line we would use a “git push” command. “git push” allows us to publish our local changes to a central repository.

To push our local changes to our GitHub repository using Android Studio, first right click on the Project, hover over the “Git” menu item, hover over “Repository” and select “Push”.

You will be presented with a pop up screen with the title “Push Commits”. Click on “Define remote”.

Open your GitHub repository in your web browser and copy the repository URL (ending in .git) in the section highlighted by the screenshot below.

Enter this URL into the URL requested in the “Define Remote” pop up screen in Android Studio and press the “OK” button.

Once the URL has been successfully added select the “Push” button.

Step 4: push code changes to github repository android studio

Next we will push the code changes on this new branch to the GitHub repository using Android Studio.

We will push these changes to the GitHub repository using Android Studio by right clicking on the project name, hovering over “Git”, hovering over “Repository” then selecting “Push”.

In the “Push Commits” pop up we will select the “Push” button.

Step 4: push merged changes into github repository using android studio

In this step we will push the merged changes from the previous step to the remote GitHub repository using Android Studio.

To push these changes into the remote repository using Android Studio, select “VCS”, “Git” then “Push…”.

Make sure the master branch is selected that has commits underneath it and select the “Push” button.

From there you can verify the changes where successfully made to your GitHub repository on the master branch by reviewing the README file for changes and looking at the commits.

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Step 5: using a pull request in github to perform the code merge

At this stage the changes on the new branch we are created are not merged in the master (also known as the main line) branch.

We will be using a pull request in GitHub to trigger the code merge from the new branch into the master branch. Pull requests are used widely in GitHub for the purposes of code reviews so that other developers can run their eyes over the changes before they get merged into the shared branches.

To raise a pull request in GitHub you first need to navigate to your GitHub repository in the web browser. You will need to be on your new branch in GitHub before in order to raise the pull request properly, you can do this by clicking the “Branch: master” button then selecting your new branch from the list of branches on your GitHub repository.

What is git?

Git is software development tool that handles version management of source code. It allows you to track changes you make your code over time and simplifies the software development process for teams that may be spread across the globe and working on the same code base.

Git is a distributed version control tool, this means a developer is able to clone, pull or fetch changes to the code base which downloads the code from the server to their local machine for them to build upon. Developers can even work on the code base an offline manner and when they ready to share their changes they follow the code merge process in Git.

Git offers support for branching and merging, this allows developers to contribute their code changes on their own individual branches then merge them with the main line branch (master) to integrate their changes, this substantially simplifies the code merging process.

Git is open source and free to use and is the most popular VCS used in software development across the globe.

What is github?

GitHub is a company that provides hosting for Git repositories along with other features the enhance collaboration between a development team.

GitHub supports public and private GitHub repositories.

What to contribute

Sometimes, during the usage of an Open Source library, we encounter bugs that we wish were fixed and missing features that we want added. When that happens, it’s tempting to request it to the maintainer(s) and hope for the best, or even search for another library.

Alternatively, we may want to contribute to the project in general and select a request that’s made by the community. In this case, the best way to find an idea is to look through the issues list and select an issue that seems simple enough for a first contribution.

For this tutorial, I’ll fix a bug that I encountered while testing the sample app. In this case, the sample app crashed when pressing an image inside the chat, instead of showing it in full screen.

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