About the Android activity life cycle

7 methods constitute a life cycle of Android activity, summed up in the following key points:

1, when starting an activity, will execute OnCreate (), OnStart (), Onresume () three methods

2. When a dialog window pops up, the activity loses focus, the OnPause () method is executed, and the dialog is executed Onresume () method

3, when the home button to cut out, activity is not visible but not destroyed (commonly known as no Finish () off), will execute OnPause (), OnStop () method, cut back will execute Onrestart (), OnStart (), Onresume ( ) Three methods, so sometimes in the implementation of some input operations to consider the user will be cut out, so you need to save the user input information in the OnPause () method, and then in the Onrestart () method to remove

About the Android activity life cycle