Spin the wheel - Random Number Picker

number pickerI added a NumberPicker to my layout and debugged my app. Now I see that the NumberPicker doesn´t work, I can´t see any + or - button and also when I click on a number on myI want to be able to create a Dialog that allows the user to pick a number from a specified range. I know that there are existing widgets (like those from quietlycoding and