public void addTiming(int section, int column, float timing) {
        mSections[section].columns[column].addTiming(timing);
        invalidate();
    }
Hacked together barchart view for this demo. Please do not take this as an example of a good way to do things.
BenchmarkDemo/app/src/main/java/com/bluelinelabs/logansquare/demo/widget/BarChart.java