Question

我没有编程经验。

我试图做一个简单的iOS应用程序（只是尝试一些教程），作为“sendmail”

简单的界面只有1个按钮，按下时，它会打开MFMailComposeViewController窗口。

这就是代码。

ViewController.h

#import <UIKit/UIKit.h>
#import <MessageUI/MFMailComposeViewController.h>
#import <MessageUI/MessageUI.h>


@interface ViewController : UIViewController <MFMailComposeViewControllerDelegate>

-(IBAction)showPicker:(id)sender;

@end

ViewController.m

#import "ViewController.h"



@interface ViewController ()

@end

@implementation ViewController


-(IBAction)showPicker:(id)sender
{
    MFMailComposeViewController *picker = [[MFMailComposeViewController alloc] init];
    picker.mailComposeDelegate = self;
    NSArray *toRecipients = [NSArray arrayWithObject:@"example@example.com"];
    [picker setToRecipients:toRecipients];
    [picker setSubject:@"TEST SUBJECT"];
    [self presentViewController:picker animated:YES completion:nil];
}


-(void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{
    [self dismissViewControllerAnimated:YES completion:nil];
}



- (void)viewDidLoad
{
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
}

- (void)didReceiveMemoryWarning
{
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

在iPhone和iPad模拟器上，它就像一个魅力。但是当在设备上进行测试时，它会发出信号SIGABRT并显示为main.m部分的证据：

  return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));

附近有“线程1 - 信号SIGABRT”。

任何提示？

提前感谢所有人。

Answer 1

要尝试两件事：

清理文件＆lt; SHIFT+CMD+K＆gt;
从您的设备中卸载该文件，然后尝试使用已清理的文件

Answer 2

在showPicker的开头：添加：

if [MFMailComposeViewController canSendMail]
{
  // Your code
}
else
  NSLog(@"No mail account configured on device or not supported");

信号SIGABRT在设备上测试时，它可以在模拟器上运行。简单的代码

2 个答案: