This framework can be used to build graphical chart views that can be added to a view group into a given layout.
See the screenshot below for an example.

Chart image inside view group

Also, it can be used to generate intents that can be used to start an activity. In this case, the graphical chart will be displayed on the entire activity screen. All the screenshots below show examples of such usage.
The average monthly temperature for 4 Greek islands (Crete, Corfu, Thassos and Skiathos) is displayed as a line chart. This is a good example of usage of a multiple series in a line chart. A different point style was used for each series.

Average temperature chart image  Average temperature chart landscape image

The monthly sales chart for the last two years for a given product can be displayed as a bar chart. This example shows the usage of a multiple series in a bar chart.

Sales bar chart image  Sales bar chart landscape image

The graph of the sin and cos trigonometric functions is displayed as a line chart. This is another example of usage of a multiple series in a line chart.

Trigonometric chart image  Trigonometric chart landscape image
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An example of usage of a multiple series in a scatter chart using randomly generated values. A different point style was used for each series.

Scatter chart image  Scatter chart landscape image

The monthly sales chart for the last two years for a given product can also be displayed as a line chart. Also, an area chart is used to display the monthly sales difference between the the lasy year and the previous one.

Sales line and area chart image  Sales line and area chart landscape image

The status of a software development project can be displayed using a time chart. One line displays the number of new tickets (issues) at a given moment in time, while the other one displays the number of fixed tickets at the same moment.

Project status chart image  Project status chart landscape image

The sales growth between January 1995 and December 2000 is displayed as a time chart. A user defined date format pattern was used for displaying the X axis labels.

Sales growth chart image  Sales growth chart landscape image

The budget comparison for several projects is displayed as a pie chart.

Projects budget chart image Projects budget chart landscape image