Unity for iOS 调用UIDatePicker

在这里简单，实现一个 Unity for iOS UIDatePicker来输入日期日间的功能。主要有两个方面：1、unity 与 ios的交互、ios下的objective-c的相关api。具体的看代码吧，有些注释。
以后有时间，再弄一个android版的上来。

一，首上一张图：

二，上一个主要的oc代码，基它的可以到demo中找到

////  IOSDatePicker.m//  Unity-iPhone////  Created by lzh on 16/2/29.////#import "IOSDatePicker.h"@implementation IOSDatePicker//-(void) showDatePicker//{//    UIDatePicker *_dataPicker = [[UIDatePicker alloc]initWithFrame:CGRectMake(0, [UIScreen mainScreen].bounds.size.height-216, [UIScreen mainScreen].bounds.size.width, 216)];//    _dataPicker.datePickerMode = UIDatePickerModeDate;//    _dataPicker.locale = [[NSLocale alloc]initWithLocaleIdentifier:@"zh_CN"];//    [_dataPicker addTarget:self action:@selector(dateChanged:) forControlEvents:UIControlEventValueChanged];//    [self.view addSubview:_dataPicker];//}////-(void) dateChanged:(id)sender//{//    NSLog(@"ios: dataChanged");//    NSDate *date = [((UIDatePicker*)sender) date];//    NSDateFormatter *dateFormatter =[[NSDateFormatter alloc]init];//    [dateFormatter setDateFormat:@"yyyy-MM-dd"];//    NSString *strDate = [dateFormatter stringFromDate:date];//    UnitySendMessage( "Main Camera", "iosCallback_DatePickerChanged", strDate.UTF8String);//}static IOSDatePicker * na_sharedInstance;+ (id)sharedInstance {    if (na_sharedInstance == nil)  {        na_sharedInstance = [[self alloc] init];    }    return na_sharedInstance;}UIDatePicker *datePicker;-(void) showDatePicker{    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 = UIDatePickerModeDate;    [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];}- (void)DP_changeDate:(UIDatePicker *)sender{    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];    [dateFormatter setDateFormat: @"yyyy-MM-dd"];    NSString *dateString = [dateFormatter stringFromDate:sender.date];    NSLog(@"--- DateChangedEvent: %@", dateString);    UnitySendMessage("IOSToUnityMessageObject", "ios_callback_DatePickerChanged", dateString.UTF8String);}- (void)DP_dismissDatePicker:(id)sender{    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_PickerClosed:(UIDatePicker *)sender{    NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];    [dateFormatter setDateFormat: @"yyyy-MM-dd"];    NSString *dateString = [dateFormatter stringFromDate:sender.date];    NSLog(@"--- DateChangedEvent: %@", dateString);    UnitySendMessage("IOSToUnityMessageObject", "ios_callback_DatePickerChanged", dateString.UTF8String);}- (void)DP_removeViews:(id)object{    if(datePicker==nil)    {        return;    }    UIViewController *vc =  UnityGetGLViewController();    [[vc.view viewWithTag:9] removeFromSuperview];    [[vc.view viewWithTag:10] removeFromSuperview];    [[vc.view viewWithTag:11] removeFromSuperview];}-(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;}@end//------------- called by unity -----begin-----------------#if defined (__cplusplus)extern "C" {#endif//    // 创建一个data picker//    void _iosOpenDatePicker_Date()//    {//        UIViewController *vc = UnityGetGLViewController();//        IOSDatePicker *myController = [[IOSDatePicker alloc] init];//        [vc.view addSubview: myController.view];//        //        [myController showDatePicker];//    }//    void _iosOpenDatePicker_Date()//    {//        UIViewController *vc = UnityGetGLViewController();//        //        UIDatePicker *_dataPicker = [[UIDatePicker alloc]initWithFrame:CGRectMake(-50, [UIScreen mainScreen].bounds.size.width, [UIScreen mainScreen].bounds.size.height-216, 216)];//        _dataPicker.datePickerMode = UIDatePickerModeDate;//        _dataPicker.locale = [[NSLocale alloc]initWithLocaleIdentifier:@"zh_CN"];//        [_dataPicker addTarget:vc action:@selector(dateChanged:) forControlEvents:UIControlEventValueChanged];//        [vc.view addSubview:_dataPicker];//    }    void _iosOpenDatePicker_Date()    {        [[IOSDatePicker sharedInstance] showDatePicker];    }#if defined (__cplusplus)}#endif//------------- called by unity -----end-----------------

三、u3d demo

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