From http://developer.android.com/reference/android/app/Activity.html
public final void showDialog (int id) Added in API level 1
This method was deprecated in API level 13. Use the new DialogFragment
class with FragmentManager instead; this is also available on older
platforms through the Android compatibility package.Simple version of showDialog(int, Bundle) that does not take any
arguments. Simply calls showDialog(int, Bundle) with null arguments.
Why
- 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.
- Here is a nice discussion
Android DialogFragment vs Dialog - Another nice discussion
DialogFragment advantages over AlertDialog
How to solve?
- http://android-developers.blogspot.in/2012/05/using-dialogfragments.html
More
- http://developer.android.com/guide/topics/fundamentals/fragments.html
- http://developer.android.com/training/basics/fragments/index.html