Android Stacked Bars Chart

问题:

I'm using the MPAndroidChart library, trying to customize the Stacked Bars. The objective is to display the differences between 2 currencies. So suppose this example for January. Currency #1 = 8; Currency #2 = 12

The idea is to show in the same bar both values, but instead of sum the 2 values ( 8 + 12) to have the value 8 "in front" and the value 12 "behind". So the total high of the bar is the max value.

I tried to do that, extending the BarEntry class, and instead of calculate the sum, just set the max value. But I'm seeing only one bar now (the one with value = 12)

Do you know if this kind of logic is supported? Any advice?

回答1:

Check out the guide on how to create stacked-bar-charts, as well as the example.

Create an entry in the stacked-bar-chart in the following way:

BarEntry entry = new BarEntry(xValue, new float[] { 8f, 12f });

This will create an entry with a total height of 20, consisting of two different values (8 and 12). The "xValue" is the position this bar will show up on the x-axis.

You can use as many entries for the stack (float array) as you want. If you intend to do only single entries (no stacks), do not use the BarEntry constructor that takes a float array, use the one that only takes a single value.