我试图按照How to intercept click on link in UITextView?的接受答案中的建议,但我设法让自己非常困惑,部分是因为我没有非常了解代表团,现在我已经添加并删除了很多东西,我不知道发生了什么。试图继承UIApplication并将其实施在委托中,但代表们感到困惑
这里的GHFeedback.h
:
#import <UIKit/UIKit.h>
#import "GHApplicationSubclassed.h"
@interface GHFeedback : UIViewController <UIApplicationDelegate>
@property (nonatomic, strong) UITextView *feedbackInstructions;
@property (nonatomic, strong) GHApplicationSubclassed *ghAppSub;
@end
这里是GHFeedback.m
:
#import "GHFeedback.h"
#import <MessageUI/MessageUI.h>
#import "GHApplicationSubclassed.h"
@interface GHFeedback() <UIApplicationDelegate, MFMailComposeViewControllerDelegate>
@end
@implementation GHFeedback
@synthesize feedbackInstructions, ghAppSub;
- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil
{
self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];
if (self) {
// Custom initialization
self.ghAppSub.delegate=self;
}
return self;
}
-(void)openURL:(NSURL *)url //This is the method I'm trying to add--the text set for self.feedbackInstructions in IB contains an email address, and I want a subject line to appear automatically if the user sends an email.
{
MFMailComposeViewController *mailer = [[MFMailComposeViewController alloc] init];
mailer.mailComposeDelegate = self;
[mailer setSubject:@"feedback on Haiku"];
[self presentViewController:mailer animated:YES completion:NULL];
}
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view from its nib.
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
这里的GHApplicationSubclassed.h
:
#import <UIKit/UIKit.h>
@interface GHApplicationSubclassed : UIApplication <UIApplicationDelegate>
@property (nonatomic, strong) GHApplicationSubclassed *appli;
@end
这里的GHApplicationSubclassed.m
:
#import "GHApplicationSubclassed.h"
@implementation GHApplicationSubclassed
@synthesize appli;
-(BOOL)openURL:(NSURL *)url
{
if ([self.delegate openURL:url]) //This line gets an error, "no known instance method for selector 'openURL'
return YES;
else
return [super openURL:url];
}
@end
我很想知道如何解决这个问题。 (通过“明确”我的意思是,而不是像这样说,“然后实施委托方法,”你可以说,“然后将此方法添加到GHFeedback.m
:-(void)openURL {[actual methods, etc., etc.]}
。
非常感谢您的帮助。
编辑:我希望发生的就是这个
有在GHFeedback
视图控制器,上面写着,显示UITextView
“如果您有任何疑问/问题与应用程序,请给我发电子邮件,”然后给我的电子邮件地址。现在,当用户按下该电子邮件地址时,iOS邮件程序将打开一个空d筏邮件。我想给电子邮件草案打开一个“Haiku反馈”的自动主题。
你能解释一下你想要发生什么吗?这可能会更容易地按照 – mkral
完成。对不起,首先不清楚。 –
另外,代表团通常比大多数人想象的要简单。假设我们在视图控制器中有一个类“Timer”。我们可以初始化一个'Timer'并启动定时器。想象一下,2分钟后时间结束。在'Timer'类中,我们可以设置一个委托方法来回调视图控制器,这样它就知道定时器已经完成,但是我们必须设置我们创建的Timer实例的'delegate',以便它知道什么类(我们的视图控制器在这种情况下)发送“timerDidFinish”方法。头文件中的只是帮助xcode知道类所设置的委托方法。 –
mkral