How to use Scatter chart graph in android?

AndroidMobile DevelopmentApps/Applications

This example demonstrate about How to use Scatter chart graph 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 − Open build.gradle(module level) and add library dependency.

apply plugin: 'com.android.application'
android {
   packagingOptions {
      exclude 'META-INF/proguard/androidx-annotations.pro'
   }
   packagingOptions {
      exclude 'META-INF/DEPENDENCIES'
      exclude 'META-INF/LICENSE'
      exclude 'META-INF/LICENSE.txt'
      exclude 'META-INF/license.txt'
      exclude 'META-INF/NOTICE'
      exclude 'META-INF/NOTICE.txt'
      exclude 'META-INF/notice.txt'
      exclude 'META-INF/ASL2.0'
   }
   compileSdkVersion 28
   defaultConfig {
      applicationId "com.example.andy.myapplication"
      minSdkVersion 15
      targetSdkVersion 28
      versionCode 1
      versionName "1.0"
      testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
   }
   buildTypes {
      release {
         minifyEnabled false
         proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
      }
   }
}
dependencies {
   implementation fileTree(dir: 'libs', include: ['*.jar'])
   implementation 'com.android.support:appcompat-v7:28.0.0'
   implementation 'com.android.support.constraint:constraint-layout:1.1.3'
   implementation 'com.github.PhilJay:MPAndroidChart:v3.1.0-alpha'
   testImplementation 'junit:junit:4.12'
   androidTestImplementation 'com.android.support.test:runner:1.0.2'
   androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
}

Step 3 − Open build.gradle(application level) and add library dependency.

// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
   repositories {
      google()
      jcenter()
   }
   dependencies {
      classpath 'com.android.tools.build:gradle:3.2.1'
      // NOTE: Do not place your application dependencies here; they belong
      // in the individual module build.gradle files
   }
}
allprojects {
   repositories {
      google()
      jcenter()
      maven { url 'https://jitpack.io' }
   }
}
task clean(type: Delete) {
   delete rootProject.buildDir
}

Step 4 − Add the following code to res/layout/activity_main.xml.

<?xml version = "1.0" encoding = "utf-8"?>
<android.support.constraint.ConstraintLayout xmlns:android = "http://schemas.android.com/apk/res/android"
   xmlns:app = "http://schemas.android.com/apk/res-auto"
   xmlns:tools = "http://schemas.android.com/tools"
   android:layout_width = "match_parent"
   android:layout_height = "match_parent"
   tools:context = ".MainActivity">
   <com.github.mikephil.charting.charts.ScatterChart
      android:id = "@+id/scatterChart"
      android:layout_width = "fill_parent"
      android:layout_height = "fill_parent" />
</android.support.constraint.ConstraintLayout>

In the above code, we have taken Scatter Chart view to show Scatter chart

Step 4 − Add the following code to src/MainActivity.java

package com.example.andy.myapplication;
import android.graphics.Color;
import android.os.Bundle;
import android.support.v7.app.AppCompatActivity;
import com.github.mikephil.charting.charts.ScatterChart;
import com.github.mikephil.charting.data.BarEntry;
import com.github.mikephil.charting.data.ScatterData;
import com.github.mikephil.charting.data.ScatterDataSet;
import com.github.mikephil.charting.utils.ColorTemplate;
import java.util.ArrayList;
public class MainActivity extends AppCompatActivity {
   ScatterChart scatterChart;
   ScatterData scatterData;
   ScatterDataSet scatterDataSet;
   ArrayList scatterEntries;
   @Override
   protected void onCreate(Bundle savedInstanceState) {
      super.onCreate(savedInstanceState);
      setContentView(R.layout.activity_main);
      scatterChart = findViewById(R.id.scatterChart);
      getEntries();
      scatterDataSet = new ScatterDataSet(scatterEntries, "");
      scatterData = new ScatterData(scatterDataSet);
      scatterChart.setData(scatterData);
      scatterDataSet.setColors(ColorTemplate.JOYFUL_COLORS);
      scatterDataSet.setValueTextColor(Color.BLACK);
      scatterDataSet.setValueTextSize(18f);
   }
   private void getEntries() {
      scatterEntries = new ArrayList<>();
      scatterEntries.add(new BarEntry(2f, 0));
      scatterEntries.add(new BarEntry(4f, 1));
      scatterEntries.add(new BarEntry(6f, 1));
      scatterEntries.add(new BarEntry(8f, 3));
      scatterEntries.add(new BarEntry(7f, 4));
      scatterEntries.add(new BarEntry(3f, 3));
   }
}

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 –

In the above result, it is showing scatter chart as per our data set values.

Click here to download the project code

raja
Published on 14-Mar-2019 07:17:40
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