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Description

A diagram of the Android Activity / Fragment lifecycle

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Complete Android Fragment & Activity Lifecycle

After struggling with trying to figure out how various pieces fit together, I've done some research and put together the complete Android Activity/Fragment lifecycle chart. This has two parallel lifecycles (activities and fragments) which are organized vertically by time. Lifecycle stages will occur in the vertical order in which they're displayed, across activities and fragments. In this way, you can see how your fragments interact with your activities.

If you see any discrepancies or errors in this diagram, please submit a pull request or contact [email protected].

Activity and Fragment Lifecycles

Vector versions suitable for printing: PDF or SVG

A Complete Android Fragment & Activity Lifecycle

Activity, Fragment and FragmentManager Lifecycle Integration

Vector versions suitable for printing PDF2 or SVG2

A Integration Of Fragments into Activities via Fragment Manager

Some Notes

This intentionally leaves off user-triggered callbacks (such as

onOptionsItemSelected()
), focusing on the lifecycle stages that are triggered by the system, in order to keep the diagram more focused on the parts that are hard to follow.

The canonical format of the diagram is the Dia file. It was then exported to SVG, hand-tweaked to fix font sizes, and imported into Inkscape to do an SVG, PDF, and PNG render. I hope to find a better workflow for this going forward; patches always welcome.

License

This diagram (in all its various forms and renders) is licensed under the Creative Commons BY-SA 4.0 license. If you would like it under a different Creative Commons license, please contact me and we can figure something out.

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