Fragment Summary: fragment lifecycle and comparison with activity Lifecycle

1. Fragment lifecycle:

Let's take a look at the illustration in the Google help document:

 

// Attach the fragment to the current activity.

Public void onattach (activity ){

// Todo auto-generated method stub
Super. onattach (activity );
}

 

Public void oncreate (bundle savedinstancestate ){
// Todo auto-generated method stub
Super. oncreate (savedinstancestate );
}

 

// Convert the layout file to a view object through the Inflater object

Public View oncreateview (layoutinflater Inflater, viewgroup container,
Bundle savedinstancestate ){
// Todo auto-generated method stub
Return super. oncreateview (Inflater, container, savedinstancestate );
}

 

Public void onactivitycreated (bundle savedinstancestate ){
// Todo auto-generated method stub
Super. onactivitycreated (savedinstancestate );
}

 

2. Compare the activity lifecycle by printing logs:

I:

1. The first four methods called during fragmeng creation correspond to the oncreate () method in the activity.

 

If fragment is not displayed on the front-end when a call is received:

 

When you return to the fragment page:

 

When you exit the fragment page:

 

Fragment Summary: fragment lifecycle and comparison with activity Lifecycle