how to set data for UIPickerView?

Question

I am tryign to add a PickerView - But I see a black screen... What am I doing wrong???

UIPickerView *myPickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 0, 320, 320)];

    [self.view addSubview:myPickerView];

Answer 1

Implement the UIPickerViewDataSource methods:

– numberOfComponentsInPickerView:
– pickerView:numberOfRowsInComponent:

and the UIPickerViewDelegate method:

– pickerView:titleForRow:forComponent:

Don't forget to set the properties:

UIPickerView * myPickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0, 0, 320, 320)];
myPickerView.delegate = self;
myPickerView.dataSource = self;
[self.view addSubview:myPickerView];

And in the .h file, remember to put:

<UIPickerViewDelegate, UIPickerViewDataSource>

I usually use an NSMutableArray filled with strings in order to fill in the data. Hope that helps!