iOS中使用UIDatePicker制作时间选择器的实例教程

UIToolbar *toolbar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, SCREEN.height - 250, SCREEN.width, 50)];
toolbar.autoresizingMask = UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleWidth;
UIBarButtonItem *itemCancelDone = [[UIBarButtonItem alloc] initWithTitle:@"确定" style:UIBarButtonItemStylePlain target:self action:@selector(actionConfirm:)];
UIBarButtonItem *itemCancel = [[UIBarButtonItem alloc] initWithTitle:@"取消" style:UIBarButtonItemStylePlain target:self action:@selector(actionCancel:)];
UIBarButtonItem *space = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];
[toolbar setItems:[NSArray arrayWithObjects:itemCancel,space,itemCancelDone, nil]];
[control addSubview:toolbar];
actionCancel上面已经实现了。下面实现actionConfirm方法。它有什么作用呢？

 

点击的时候获取到时间，然后通过代理代理出去。
时间选取器消失：

复制代码
  - (void)actionConfirm:(id)sender
  {
      if ([self.delegate respondsToSelector:@selector(datePickerView:didSelectTime:)]) {
          [self.delegate datePickerView:self didSelectTime:self.datePicker.date];
      }
      [self removeFromSuperview];
  }
代理方法：

 

在LGDatePickerView.h

复制代码
@protocol LGDatePickerViewDelegate <NSObject>

 

- (void)datePickerView:(LGDatePickerView *)datepicker didSelectTime:(NSDate *)time;

@end

创建UIDatePicker：

 

在LGDatePickerView.h定义一个全局变量