UiToolBar添加UIButton 和 UIBarbuttonItem

    pickerView = [[UIView alloc] initWithFrame:CGRectMake(0, __MainScreen_Height-240, 320, 240)];

    tool = [[UIToolbar alloc] initWithFrame:CGRectMake(0, 0, 320, 40)];

    

    

//    UIButton *queding =[UIButton buttonWithType:UIBarButtonSystemItemCancel];

//    queding.frame = CGRectMake(__MainScreen_Width-60, 5, 50, 30);

//    [queding addTarget:self action:@selector(toolButtonClicked:) forControlEvents:UIControlEventTouchUpInside];

////    [queding setBackgroundImage:[UIImage imageNamed:@"btn_gray.png"] forState:UIControlStateNormal];

//    

//    [queding setTitle:@"确定" forState:UIControlStateNormal];

//    [queding setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

//    

//    

//    [tool addSubview:queding];

//    UIButton *cancel =[UIButton buttonWithType:UIButtonTypeRoundedRect];

//    cancel.frame = CGRectMake(20, 5, 50, 30);

//    [cancel addTarget:self action:@selector(toolButtonCancelClicked:) forControlEvents:UIControlEventTouchUpInside];

//    [cancel setBackgroundImage:[UIImage imageNamed:@"btn_gray.png"] forState:UIControlStateNormal];

//    

//    [cancel setTitle:@"取消" forState:UIControlStateNormal];

//    [cancel setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];

//    [tool addSubview:cancel];

    UIBarButtonItem *confirmButton=[[UIBarButtonItem alloc]initWithTitle:@"确定" style:UIBarButtonItemStyleBordered target:self action:@selector(toolButtonClicked:)];

    UIBarButtonItem *CancelButton=[[UIBarButtonItem alloc]initWithTitle:@"取消" style:UIBarButtonItemStyleBordered target:self action:@selector(toolButtonCancelClicked:)];

    UIBarButtonItem *flexSpace= [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];

    

    NSArray *buttonArray = [[NSArray alloc] initWithObjects: CancelButton, flexSpace, flexSpace, confirmButton, nil];

    

    [tool setItems: buttonArray];

    

    [confirmButton release];

    [CancelButton release];

    [flexSpace release];

    

    [pickerView addSubview:tool];

    datePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, 40, 320, 200)];

    datePicker.datePickerMode = UIDatePickerModeDate;

    datePicker.backgroundColor = [UIColor whiteColor];

    [datePicker addTarget:self action:@selector(changedValue:) forControlEvents:UIControlEventValueChanged];

    NSLog(@"-------===  %@",datePicker.subviews);

    [pickerView addSubview:datePicker];

    [self.view addSubview:pickerView];