When developing an Android app, I've read that it's recommended to use DialogFragment
instead of using directly an AlertDialog
to show alerts and confirmations.
This is done, for example, on DialogFragment's Documentation: http://developer.android.com/reference/android/app/DialogFragment.html
People also say they prefer this here: Android DialogFragment vs Dialog
I would like to know the advantages of this approach, since the code becomes more complex.
Thanks
Since the introduction of API level 13:
the showDialog method from Activity is deprecated. Invoking a dialog elsewhere in code is not advisable since you will have to manage the dialog yourself (e.g. orientation change). Not using the showDialog will result in occasional exceptions, the dialog is not linked to any Activity.
Note about showDialog:
reference of Dialog: Activities provide a facility to manage the creation, saving and restoring of dialogs. See onCreateDialog(int), onPrepareDialog(int, Dialog), showDialog(int), and dismissDialog(int). If these methods are used, getOwnerActivity() will return the Activity that managed this dialog.
Difference between DialogFragment and AlertDialog
One thing that comes to mind when reading your question. Are they so much different? A DialogFragment is pretty similar to a Dialog, it's just wrapped inside a fragment. From Android reference regarding DialogFragment:
A DialogFragment is a fragment that displays a dialog window, floating on top of its activity's window. This fragment contains a Dialog object, which it displays as appropriate based on the fragment's state. Control of the dialog (deciding when to show, hide, dismiss it) should be done through the API here, not with direct calls on the dialog.
Other notes