项目介绍：

LWTDatePickerView

show The PickerView

    LWTDatePickerView *pickerView = [[LWTDatePickerView alloc] initWithPickerViewWithCenterTitle:@"选择期限" LimitMaxIndex:50];  

自动滚动到特定行数

    [pickerView pickerViewDidSelectRowWithLeftIndex:_minIndex andRightIndex:_maxIndex];  

点击事件   

    [pickerView pickerVIewClickCancelBtnBlock:^{  

        NSLog(@"=====clickTheCancel=======");  

    } sureBtClcik:^(NSInteger leftIndex, NSInteger rightIndex, NSString *leftAndRightString) {  

        _dateLabel.text = leftAndRightString;  
        _minIndex = leftIndex;  
        _maxIndex = rightIndex;  
        //  
    }];  

github:https://github.com/winterLiao/LWTDatePickerView