Question

我在我的应用中处理邮件发送功能。在我的应用程序发送邮件时，Gmail应用程序的邮件正文中。它没有显示&和'这些特殊字符。

这是代码。

    //Suject 
    NSString *strSubject = @"Subjet";
    // Message Body
    __block NSMutableString *messageBody = [[NSMutableString alloc] init];

    // gmmmailto
    //googlegmail:///co?subject=<subject text>&body=<body text>
    NSURL *checkGmailAppURL  = [NSURL URLWithString:[@"googlegmail:///co?to=&subject=hi&body=hi" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding]];

    if ([[UIApplication sharedApplication] canOpenURL:checkGmailAppURL])
    {
        [messageBody appendFormat:@"%@\n\n", @"Hi I want sell this application & want be free"];
        NSString *urlFinal = [NSString stringWithFormat: @"googlegmail:///co?subject=%@&body=%@", strSubject, messageBody];
        NSURL *emailUrlFinal = [NSURL URLWithString:[urlFinal stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet URLQueryAllowedCharacterSet]]];

        [[UIApplication sharedApplication] openURL:emailUrlFinal];
    }

Answer 1

使用以下方法替换字符串中的特殊字符。

将带有特殊字符的字符串传递给下面的方法：

-(NSString*)replaceSpecialCharsFromString:(NSString*)str
{
    str = [str stringByReplacingOccurrencesOfString:@"&" withString:@"&amp;"];
    str = [str stringByReplacingOccurrencesOfString:@"<" withString:@"&lt;"];
    str = [str stringByReplacingOccurrencesOfString:@">" withString:@"&gt;"];
    str = [str stringByReplacingOccurrencesOfString:@"'" withString:@"&#39;"];

    return str;
}

现在，在邮件正文中使用str并检查它是否可以解决您的问题。

Answer 2

您应该使用MFMailComposeViewController，这是专为从应用发送电子邮件而设计的。以下是如何使用它的代码示例：

#import "ViewController.h"
#import <MessageUI/MFMailComposeViewController.h>

@interface ViewController () <MFMailComposeViewControllerDelegate>

@end

@implementation ViewController

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    [self sendEmail];
}

- (void) sendEmail {
    if ([MFMailComposeViewController canSendMail]) {
        MFMailComposeViewController* mailController = [[MFMailComposeViewController alloc] init];
        mailController.navigationBar.titleTextAttributes = @{NSForegroundColorAttributeName : [UIColor whiteColor]};
        mailController.mailComposeDelegate = self;
        [mailController setSubject:NSLocalizedString(@"Feedback", @"")];
        [mailController setTitle:NSLocalizedString(@"Feedback", @"")];
        [mailController setToRecipients:@[@"example@gmail.com"]];
        [mailController setMessageBody:@"Hello & ampersand" isHTML:NO];
        if (mailController) {
            [self presentViewController:mailController animated:YES completion:nil];
        }
    }
    else {
        //show UIAlertView
    }
}

- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error {
    //Handle completion
}

@end

&或'

不会出现任何问题

修改

如果您仍想使用gmail应用程序，请尝试以下代码，它对我有用：

NSString *messageBodyRaw = @"Hi I want sell this application & want be free\n\n"; NSString *messageBody = [messageBodyRaw urlEncodeUsingEncoding:NSUTF8StringEncoding]; NSString *urlFinal = [NSString stringWithFormat: @"googlegmail:///co?subject=%@&body=%@", strSubject, messageBody]; NSURL *emailUrlFinal = [NSURL URLWithString:urlFinal]; [[UIApplication sharedApplication] openURL:emailUrlFinal];

的NSString + URLEncoding.h：

#import <Foundation/Foundation.h> @interface NSString (URLEncoding) -(NSString *)urlEncodeUsingEncoding:(NSStringEncoding)encoding; @end

的NSString + URLEncoding.m：

#import "NSString+URLEncoding.h" @implementation NSString (URLEncoding) -(NSString *)urlEncodeUsingEncoding:(NSStringEncoding)encoding { return (NSString *)CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(NULL, (CFStringRef)self, NULL, (CFStringRef)@"!*'\"();:@&=+$,/?%#[]% ", CFStringConvertNSStringEncodingToEncoding(encoding))); } @end

发送邮件时，无法在Gmail中的邮件正文中显示＆amp;（＆符号）

2 个答案: