How to draw triangle shape in android?

This example demonstrate about How to draw triangle shape in android.

Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

Step 2 − Add the following code to res/layout/activity_main.xml.

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
   xmlns:tools="http://schemas.android.com/tools"
   android:layout_width="match_parent"
   android:layout_height="match_parent"
   android:orientation="vertical"
   android:gravity="center"
   android:layout_marginTop="30dp"
   tools:context=".MainActivity">
   <ImageView
      android:layout_width="100dp"
      android:layout_height="100dp"
      android:background="@drawable/background"/>
</LinearLayout>

In the above code, we have taken imageview and added background as background.xml.

Step 3 − Add the following code to drawable/ background.xml

<vector xmlns:android="http://schemas.android.com/apk/res/android"
   android:height="100dp"
   android:width="100dp"
   android:viewportWidth="24"
   android:viewportHeight="24">
   <path android:fillColor="#000" android:pathData="M1,21H23L12,2" />
</vector>

Let's try to run your application. I assume you have connected your actual Android Mobile device with your computer. To run the app from android studio, open one of your project's activity files and click Run  icon from the toolbar. Select your mobile device as an option and then check your mobile device which will display your default screen –

Click here to download the project code