Android Grouped Bar Chart customized X axis label with mpandroidchart

To use the library, you need to do this in Gradle dependency:

• Add the following to your project level build.gradle:

allprojects {
    repositories {
        maven { url "https://jitpack.io" }
    }
}

• Add this to your app build.gradle:

dependencies {
    compile 'com.github.PhilJay:MPAndroidChart:v3.0.1'
}

Next go to your layout file (constraint layout format) create the mpandroidchart graph view with the following code:

<com.github.mikephil.charting.charts.BarChart
        android:id="@+id/barChart"
        android:layout_width="0dp"
        android:layout_marginEnd="20dp"
        app:layout_constraintRight_toRightOf="parent"
        android:layout_marginRight="20dp"
        android:layout_marginStart="20dp"
        app:layout_constraintLeft_toLeftOf="parent"
        android:layout_marginLeft="20dp"
        android:layout_marginTop="20dp"
        app:layout_constraintTop_toTopOf="parent"
        android:layout_height="0dp"
        app:layout_constraintBottom_toBottomOf="parent"
        android:layout_marginBottom="20dp" />

Next go in to your java file create these few variables field first:

private BarChart chart;
float barWidth;
float barSpace;
float groupSpace;

barWidth = 0.3f;
barSpace = 0f;
groupSpace = 0.4f;

Next go in the override onCreate method

Set the chart setting with the below following code

chart = (BarChart)findViewById(R.id.barChart);
chart.setDescription(null);
chart.setPinchZoom(false);
chart.setScaleEnabled(false);
chart.setDrawBarShadow(false);
chart.setDrawGridBackground(false);

Next create the dummy data for display the graph

int groupCount = 6;

 ArrayList xVals = new ArrayList();

 xVals.add("Jan"); 
 xVals.add("Feb");
 xVals.add("Mar"); 
 xVals.add("Apr"); 
 xVals.add("May");
 xVals.add("Jun");

 ArrayList yVals1 = new ArrayList();
 ArrayList yVals2 = new ArrayList(); 

 yVals1.add(new BarEntry(1, (float) 1));
 yVals2.add(new BarEntry(1, (float) 2)); 
 yVals1.add(new BarEntry(2, (float) 3));
 yVals2.add(new BarEntry(2, (float) 4)); 
 yVals1.add(new BarEntry(3, (float) 5));
 yVals2.add(new BarEntry(3, (float) 6));
 yVals1.add(new BarEntry(4, (float) 7)); 
 yVals2.add(new BarEntry(4, (float) 8)); 
 yVals1.add(new BarEntry(5, (float) 9)); 
 yVals2.add(new BarEntry(5, (float) 10));
 yVals1.add(new BarEntry(6, (float) 11));
 yVals2.add(new BarEntry(6, (float) 12));

Next, to draw the graph

BarDataSet set1, set2;
set1 = new BarDataSet(yVals1, "A");
set1.setColor(Color.RED);
set2 = new BarDataSet(yVals2, "B");
set2.setColor(Color.BLUE);
BarData data = new BarData(set1, set2);
data.setValueFormatter(new LargeValueFormatter());
chart.setData(data);
chart.getBarData().setBarWidth(barWidth);
chart.getXAxis().setAxisMinimum(0);
chart.getXAxis().setAxisMaximum(0 + chart.getBarData().getGroupWidth(groupSpace, barSpace) * groupCount);
chart.groupBars(0, groupSpace, barSpace);
chart.getData().setHighlightEnabled(false);
chart.invalidate();

Draw the indicator

Legend l = chart.getLegend();
l.setVerticalAlignment(Legend.LegendVerticalAlignment.TOP);
l.setHorizontalAlignment(Legend.LegendHorizontalAlignment.RIGHT);
l.setOrientation(Legend.LegendOrientation.HORIZONTAL);
l.setDrawInside(true);
l.setYOffset(20f);
l.setXOffset(0f);
l.setYEntrySpace(0f);
l.setTextSize(8f);

Draw the X-Axis and Y-Axis

//X-axis
XAxis xAxis = chart.getXAxis();
xAxis.setGranularity(1f);
xAxis.setGranularityEnabled(true);
xAxis.setCenterAxisLabels(true);
xAxis.setDrawGridLines(false);
xAxis.setAxisMaximum(6);
xAxis.setPosition(XAxis.XAxisPosition.BOTTOM);
xAxis.setValueFormatter(new IndexAxisValueFormatter(xVals));
//Y-axis
chart.getAxisRight().setEnabled(false);
YAxis leftAxis = chart.getAxisLeft();
leftAxis.setValueFormatter(new LargeValueFormatter());
leftAxis.setDrawGridLines(true);
leftAxis.setSpaceTop(35f);
leftAxis.setAxisMinimum(0f);

Output:

Video tutorial: click here