Creating a graph similar to Battery usage in Gingerbread

问题

I just wanted to create a trend in my activity that would look like the Gingerbread battery one (see picture above)

I am looking deeply in the Android git and found what seem to be the correct activity

Unfortunately, I cannot find something related to canvas or drawing and how I can use this code to create my own trend.

If someone could point me where I could find the drawing process or point me another open source sample with a trend activity, would be very helpful.

回答1:

I believe the graphing is handled by BatteryHistoryChart.java.

来源：https://stackoverflow.com/questions/5587725/creating-a-graph-similar-to-battery-usage-in-gingerbread