Line Graph View in Android with Example

If you are looking for a view to represent some statistical data or looking for a UI for displaying a graph in your app then in this article we will take a look on creating a line graph view in our Android App using the GraphView library. 

What we are going to build in this article? 

We will be building a simple Line Graph View in our Android app and we will be displaying some sample data in our application. A sample image is given below to get an idea about what we are going to do in this article. Note that we are going to implement this project using the Java language. 

Step-by-Step Implementation

Step 1: Create a New Project

To create a new project in Android Studio please refer to How to Create/Start a New Project in Android Studio. Note that select Java as the programming language.

Step 2: Add dependency to the build.gradle(Module:app) file

Navigate to the Gradle Scripts > build.gradle(Module:app) and add the below dependency in the dependencies section.   

implementation 'com.jjoe64:graphview:4.2.2'    

After adding this dependency sync your project and now we will move towards its implementation.  

Step 3: Working with the activity_main.xml file

Navigate to the app > res > layout > activity_main.xml and add the below code to that file. Below is the code for the activity_main.xml file. 

Step 4: Working with theMainActivity.java file

Go to the MainActivity.java file and refer to the following code. Below is the code for the MainActivity.java file. Comments are added inside the code to understand the code in more detail.

Now run your app and see the output of the app. 

Output: