Apps Two methods of dialog creation. What the difference?

[Zilon]

There is two methors to add buttons to AlertDialog
1. using AlertDialog.Builder and calling builder.setPositiveButton or setNegativeButton
2. using AlertDialog dialog; dialog.setButton dialog.setButton2.
What the difference

By the way, if I inherit my class from Dialog should I override all constructors, or only one

 

[takeshi]

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