Unity调用IOS时间日期控件UIDatePicker

没什么好解析的上代码：

//***************************************日历、时间UIDatePicker* datePicker;-(void)DP_ShowPicker{    if (datePicker!=nil) {        [self DP_removeViews:nil];    }    UIViewController *vc =  UnityGetGLViewController();        CGRect toolbarTargetFrame = CGRectMake(0, vc.view.bounds.size.height-216-44, [self GetW], 44);    CGRect datePickerTargetFrame = CGRectMake(0, vc.view.bounds.size.height-216, [self GetW], 216);    CGRect darkViewTargetFrame = CGRectMake(0, vc.view.bounds.size.height-216-44, [self GetW], 260);        UIView *darkView = [[UIView alloc] initWithFrame:CGRectMake(0, vc.view.bounds.size.height, [self GetW], 260)];    darkView.alpha = 1;    darkView.backgroundColor = [UIColor whiteColor];    darkView.tag = 9;        UITapGestureRecognizer *tapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(DP_dismissDatePicker:)];    [darkView addGestureRecognizer:tapGesture];    [vc.view addSubview:darkView];        datePicker = [[UIDatePicker alloc] initWithFrame:CGRectMake(0, vc.view.bounds.size.height+44, [self GetW], 216)];    datePicker.tag = 10;    [datePicker addTarget:self action:@selector(DP_changeDate:) forControlEvents:UIControlEventValueChanged];    datePicker.datePickerMode = UIDatePickerModeDateAndTime;//日历时间样式，可以是单独的时间或者日历    [vc.view addSubview:datePicker];        UIToolbar *toolBar = [[UIToolbar alloc] initWithFrame:CGRectMake(0, vc.view.bounds.size.height, [self GetW], 44)];    toolBar.tag = 11;    toolBar.barStyle = UIBarStyleDefault;    UIBarButtonItem *spacer = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil];    UIBarButtonItem *doneButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(DP_dismissDatePicker:)];    [toolBar setItems:[NSArray arrayWithObjects:spacer, doneButton, nil]];    [vc.view addSubview:toolBar];    [UIView beginAnimations:@"MoveIn" context:nil];    toolBar.frame = toolbarTargetFrame;            datePicker.frame = datePickerTargetFrame;    darkView.frame = darkViewTargetFrame;        [UIView commitAnimations];}-(CGFloat) GetW{    UIViewController *vc = UnityGetGLViewController();        bool IsLandscape;    UIInterfaceOrientation orientation = [UIApplication sharedApplication].statusBarOrientation;    if(orientation == UIInterfaceOrientationLandscapeLeft ||       orientation == UIInterfaceOrientationLandscapeRight)    {        IsLandscape = true;    }    else    {        IsLandscape = false;    }        CGFloat w;    if(IsLandscape)    {        w = vc.view.frame.size.height;    }    else    {        w = vc.view.frame.size.width;    }        //NSLog(@"--- System Version: %@", [UIDevice currentDevice].systemVersion);    NSArray *vComp = [[UIDevice currentDevice].systemVersion componentsSeparatedByString:@"."];    if ([[vComp objectAtIndex:0] intValue] >= 8)    {        w = vc.view.frame.size.width;    }        return w;}- (void)DP_changeDate:(UIDatePicker *)sender{        NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];    [dateFormatter setDateFormat: @"yyyy-MM-dd hh:mm"];    NSString *dateString = [dateFormatter stringFromDate:sender.date];    NSLog(@"--- DateChangedEvent: %@", dateString);    UnitySendMessage( [m_pstrObjectName UTF8String], [m_pstrFuncName UTF8String], dateString.UTF8String);}-(void) DP_PickerClosed:(UIDatePicker *)sender{    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];    [dateFormatter setDateFormat: @"yyyy-MM-dd hh:mm"];    NSString *dateString = [dateFormatter stringFromDate:sender.date];        NSLog(@"--- DateClosedEvent: %@", dateString);    UnitySendMessage( [m_pstrObjectName UTF8String], [m_pstrFuncName UTF8String], dateString.UTF8String);        }- (void)DP_dismissDatePicker:(id)sender{     NSLog(@"--- DismissDatPicker");    UIViewController *vc =  UnityGetGLViewController();        [self DP_PickerClosed:datePicker];        CGRect toolbarTargetFrame = CGRectMake(0, vc.view.bounds.size.height, [self GetW], 44);    CGRect datePickerTargetFrame = CGRectMake(0, vc.view.bounds.size.height+44, [self GetW], 216);    CGRect darkViewTargetFrame = CGRectMake(0, vc.view.bounds.size.height, [self GetW], 260);        [UIView beginAnimations:@"MoveOut" context:nil];    [vc.view viewWithTag:9].frame = darkViewTargetFrame;    [vc.view viewWithTag:10].frame = datePickerTargetFrame;    [vc.view viewWithTag:11].frame = toolbarTargetFrame;    [UIView setAnimationDelegate:self];    [UIView setAnimationDidStopSelector:@selector(DP_removeViews:)];    [UIView commitAnimations];}- (void)DP_removeViews:(id)object{     NSLog(@"--- removeViews");    if(datePicker==nil)    {        return;    }        UIViewController *vc =  UnityGetGLViewController();    [[vc.view viewWithTag:9] removeFromSuperview];    [[vc.view viewWithTag:10] removeFromSuperview];    [[vc.view viewWithTag:11] removeFromSuperview];}//*********************

UnitySendMessage( [m_pstrObjectName UTF8String], [m_pstrFuncName UTF8String], dateString.UTF8String);

参数参考文章：Unity Android/IOS 打开图片库和相机，并加载图片