xcode-如何設置ios中的UIPickerView?

如何設置ios中的UIPickerView?

目前需要添加一個PickerView，但是運行之後只有黑屏，不知道問題出在哪裡？

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

    [self.view addSubview:myPickerView];

謝謝指點。

最佳回答：

用UIPickerViewDataSource方法:

– numberOfComponentsInPickerView:
– pickerView:numberOfRowsInComponent:

還有UIPickerViewDelegate方法:

– pickerView:titleForRow:forComponent:

然後設置properties:

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

在.h文件中，如下:

<UIPickerViewDelegate, UIPickerViewDataSource>

我以前是用NSMutableArray充填字符串，希望對你有用。