UIPickerView的用法总结

时间：2010-10-05 来源：KidReborn

1.UIPickerView的初始化

   pickerView = [[UIPickerView alloc] initWithFrame:CGRectMake(0.0f, 200.0f, 320.0f, 216.0f)];
        pickerView.delegate = self;  //指定Delegate
        pickerView.showsSelectionIndicator = YES; //显示选中框

2.实现UIPickerViewDelegate和UIPickerViewDataSource

- (NSInteger)numberOfComponentsInPickerView:(UIPickerView *)pickerView; //返回列数

- (NSInteger)pickerView:(UIPickerView *)pickerView numberOfRowsInComponent:(NSInteger)component; //返回每列的最大行数

- (NSString *)pickerView:(UIPickerView *)pickerView titleForRow:(NSInteger)row forComponent:(NSInteger)component; //每一列中每一行的具体内容

- (void)pickerView:(UIPickerView *)pickerView didSelectRow:(NSInteger)row inComponent:(NSInteger)component //选中哪一列哪一行

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