https://github.com/xxv/android-lifecycle

A diagram of the Android Activity / Fragment lifecycle
https://github.com/xxv/android-lifecycle

Last synced: 3 months ago
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A diagram of the Android Activity / Fragment lifecycle

• Host: GitHub
• URL: https://github.com/xxv/android-lifecycle
• Owner: xxv
• Created: 2014-04-18T14:26:22.000Z (almost 11 years ago)
• Default Branch: main
• Last Pushed: 2021-08-19T00:44:07.000Z (over 3 years ago)
• Last Synced: 2024-07-31T21:53:06.999Z (6 months ago)
• Language: Java
• Size: 2.89 MB
• Stars: 5,262
• Watchers: 263
• Forks: 682
• Open Issues: 27
• Metadata Files:
  • Readme: README.md

Awesome Lists containing this project

• awesome-android-learning - Complete Android Fragment & Activity Lifecycle

README

        
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]](mailto:[email protected]).

## Activity and Fragment Lifecycles

Vector versions suitable for printing: [PDF][] or [SVG][]

![A Complete Android Fragment & Activity Lifecycle](complete_android_fragment_lifecycle.png)

## Activity, Fragment and FragmentManager Lifecycle Integration

Vector versions suitable for printing [PDF2][] or [SVG2][]

![A Integration Of Fragments into Activities via Fragment Manager](android-lifecycle-activity-to-fragments.png)

### 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][CC-BY-SA]. If you would like it under a

different Creative Commons license, please contact me and we can figure

something out.

[Dia]: http://dia-installer.de/

[Inkscape]: http://inkscape.org/

[PDF]: complete_android_fragment_lifecycle.pdf

[SVG]: complete_android_fragment_lifecycle.svg

[CC-BY-SA]: https://creativecommons.org/licenses/by-sa/4.0/

[PDF2]: android-lifecycle-activity-to-fragments.pdf

[SVG2]: android-lifecycle-activity-to-fragments.svg