Android Stacked Bar Chart Using MPAndroidChart

Hii Developer in the Android Example we make solution for a dashboard App to create a multiple color stacked bar chart using MPAndroidChart for Android app. So in these Android solution like i have a multiple value and show on bar chart with different color on a single bar with the value.

To display a bar chart in your Android app you will need to follow these steps.

1. Select a chart library for Android, in this tutorial we use MPAndroidChart
2. Add dependencies for MPAndroidChart to your project
3. Add the barchart to your activity or fragment layout
4. Configure the appearance of the barchart
5. Create the data set to show data in the bar chart

The above chart is only sample, I want three colours in each bar (stacked). I have already made a bar chart with separate colors, but can’t make such multiple coloured chart. so after a log try and do it.

Android Stacked Bar Chart Using MPAndroidChart

So Let’s make a Android Stacked Bart Chart using MPAndroidChart to showing multiple color on bar chart with stacked.

Firstly create an android project with empty activity and if you already have a project create a activity for stacked bar chart and the MPAndroid Chart Library in you gradle file .

MP Android Chart Library 

repositories {
    maven { url 'https://jitpack.io' }
}

dependencies {
    implementation 'com.github.PhilJay:MPAndroidChart:v3.1.0'
}

bar_chart_activity.xml 

in your activity xml file add bar chart layout. copy below code.

<com.github.mikephil.charting.charts.BarChart
    android:id="@+id/bar_chart1"
    android:layout_width="match_parent"
    android:layout_weight="1"
    android:layout_marginTop="10dp"
    android:layout_marginBottom="10dp"
    android:layout_height="300dp"/>

BarChart.java file source code 

follow these code for you java file implementation for you bar chart showing data on bar with there color.

public class MainActivity extends AppCompatActivity {

   
    BarChart mChart1;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);

      
        MultipalColor();
    }


   

    public void MultipalColor(){
        mChart1 = findViewById(R.id.bar_chart1);

        mChart1.getDescription().setEnabled(false);

        // if more than 60 entries are displayed in the chart, no values will be
        // drawn
        mChart1.setMaxVisibleValueCount(40);

        // scaling can now only be done on x- and y-axis separately
        mChart1.setPinchZoom(false);

        mChart1.setDrawGridBackground(false);
        mChart1.setDrawBarShadow(false);

        mChart1.setDrawValueAboveBar(false);
        mChart1.setHighlightFullBarEnabled(false);

        // change the position of the y-labels
        YAxis leftAxis = mChart1.getAxisLeft();
        leftAxis.setValueFormatter(new MyAxisValueFormatter());
        leftAxis.setAxisMinimum(0f); // this replaces setStartAtZero(true)
        mChart1.getAxisRight().setEnabled(false);

        XAxis xLabels = mChart1.getXAxis();
        xLabels.setPosition(XAxis.XAxisPosition.TOP);

        // chart.setDrawXLabels(false);
        // chart.setDrawYLabels(false);

        // setting data;

        Legend l = mChart1.getLegend();
        l.setVerticalAlignment(Legend.LegendVerticalAlignment.BOTTOM);
        l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
        l.setOrientation(Legend.LegendOrientation.HORIZONTAL);
        l.setDrawInside(false);
        l.setFormSize(8f);
        l.setFormToTextSpace(4f);
        l.setXEntrySpace(6f);

        ArrayList<BarEntry> yVals1 = new ArrayList<BarEntry>();

        for (int i = 0; i < 8 + 1; i++) {
            float mult = (60);
            float val1 = (float) (Math.random() * mult) + mult / 3;
            float val2 = (float) (Math.random() * mult) + mult / 3;
            float val3 = (float) (Math.random() * mult) + mult / 3;

            yVals1.add(new BarEntry(i,
                    new float[]{val1, val2, val3},
                    getResources().getDrawable(R.drawable.icons_sneakers)));
        }

        BarDataSet set1;

        if (mChart1.getData() != null &&
                mChart1.getData().getDataSetCount() > 0) {
            set1 = (BarDataSet) mChart1.getData().getDataSetByIndex(0);
            set1.setValues(yVals1);
            mChart1.getData().notifyDataChanged();
            mChart1.notifyDataSetChanged();
        } else {
            set1 = new BarDataSet(yVals1, "Codeplayon.com");
            set1.setDrawIcons(false);
            set1.setColors(getColors());
            set1.setStackLabels(new String[]{"Births", "Divorces", "Marriages"});

            ArrayList<IBarDataSet> dataSets = new ArrayList<IBarDataSet>();
            dataSets.add(set1);

            BarData data = new BarData(dataSets);
            data.setValueFormatter(new MyValueFormatter());
            data.setValueTextColor(Color.WHITE);

            mChart1.setData(data);
        }

        mChart1.setFitBars(true);
        mChart1.invalidate();
    }

    private int[] getColors() {

        // have as many colors as stack-values per entry
        int[] colors = new int[3];

        System.arraycopy(ColorTemplate.MATERIAL_COLORS, 0, colors, 0, 3);

        return colors;
    }


}