[Solved]-Android highcharts display single entry bar chart-Highcharts

You need to increase data amount, not series amount. So instead of multiple series:

HIBar bar1 = new HIBar();
Number[] bar1Data = new Number[]{10};
...

HIBar bar2 = new HIBar();
Number[] bar2Data = new Number[] {15};
...

HIBar bar3 = new HIBar();
Number[] bar3Data = new Number[] {20};
...

Use one series with multiple points:

HIBar bar1 = new HIBar();
Number[] bar1Data = new Number[] {107, 31, 635, 203, 2 };
bar1.setData(new ArrayList<>(Arrays.asList(bar1Data)));