layout - Android: NumberPicker doesn´t work - Stack Overflow

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 myTeam Picker Wheel is a specialized random team generator that can produce random groups from a list of names. Download results in a CSV file or an image.