Android implements the pop-up dialog function at the bottom

Environmental Science:

Note: there are two methods to realize the pop-up dialog box at the bottom:

Dialogfragment is recommended

design sketch:

Layout file dialog_ select_ call.xml：

Dialog implementation source code:

initialization:

Display dialog box:

Dialogfragment implementation source code:

Defines a class selectcalldialog. Java that inherits dialogfragment

Initialization parameters before displaying the dialog box:

After the dialog box is displayed:

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