Detailed explanation of the instance of activitylifecycle callbacks in Android

Detailed explanation of the instance of activitylifecycle callbacks in Android

The above is an example of using activitylifecycle callbacks. The code comments are clearly written. You can refer to it,

Myapplication is as follows:

Firstactivity is as follows:

The secondactivity is as follows:

Thirdactivity is as follows:

first_ Activity.xml is as follows:

second_ Activity.xml is as follows:

third_ Activity.xml is as follows:

Androidmanifest.xml is as follows:

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