Android-onpause ()

OnPause used to move from one activity to another activity, device into hibernation (screen locked), or dialog Popup

OnStop for invisible Activity (when a dialog pops up, the activity underneath is still visible, so onStop is not called at this time)

The difference can be seen from the following log logs:

1. When jumping from firstactivity to secondactivity

Firstacvity---> OnCreate
Firstacvity--->onstart
Firstacvity--->onresume
Firstacvity--->onPause
Secondactivity--->oncreate
Secondactivity--->onstart
Secondactivity--->onresume
Firstacvity--->onStop

Now add the Android:theme= "@android: Style/theme.dialog" to the seconedactivity attribute in Androidmainfest.xml, The seconedactivity will appear as a dialog box and will not cover the Firstacvity form.

The status output at this point is:

Firstacvity---> OnCreate
Firstacvity--->onstart
Firstacvity--->onresume
Firstacvity--->onPause
Secondactivity--->oncreate
Secondactivity--->onstart
Secondactivity--->onresume

The OnStop method is called less firstacvity than when it is completely obscured.

The following two cases will only trigger onpause without triggering onstop

1. A transparent activity that contains dialog appears

2. Press Poweroff to lock the screen

Shows a non-activity dialog that is not called OnPause and OnStop, because this dialog belongs to the activity

Android-onpause ()