使用openURL发送邮件时出现问题

如何解决使用openURL发送邮件时出现问题

| 我在使用openURL打开邮件客户端时遇到问题。这是代码。

Nsstring *subject = @\"Demo Subject\";
Nsstring *body = @\"<html><head>Header</head><body><a href=\\\"http://example.com\\\">Here is the demo link</a></body></html>\";
Nsstring *urlString = [Nsstring stringWithFormat:@\"mailto:?&subject=%@&body=%@\",subject,body];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlString]];

我想，是否存在使用特殊字符的任何编码方式，这种编码方式确实存在，但示例文本中未在此处显示。谢谢

解决方法

NSString *htmlBody = @\"you probably want something HTML-y here\";

// First escape the body using a CF call
NSString *escapedBody = [(NSString*)CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault,(CFStringRef)htmlBody,NULL,CFSTR(\"?=&+\"),kCFStringEncodingUTF8) autorelease];

// Then escape the prefix using the NSString method
NSString *mailtoPrefix = [@\"mailto:?subject=Some Subject&body=\" stringByAddingPercentEscapesUsingEncoding:NSUTF8StringEncoding];

// Finally,combine to create the fully escaped URL string
NSString *mailtoStr = [mailtoPrefix stringByAppendingString:escapedBody];

// And let the application open the merged URL
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:mailtoStr]];

, 我想你可以用这个

    MFMailComposeViewController *mail = [[MFMailComposeViewController alloc] init];
    [[mail navigationBar] setTintColor:[UIColor blackColor]];
    mail.mailComposeDelegate = self;
    if([MFMailComposeViewController canSendMail])
    {
        [mail setSubject:@\"Demo Subject\"];
        [mail setToRecipients:[NSArray arrayWithObject:@\"me\"]];
        [mail setMessageBody:@\"<html><head>Header</head><body><a href=\\\"http://example.com\\\">Here is the demo link</a></body></html>\" isHTML:YES];
        [self presentModalViewController:mail animated:YES];
    }
    [mail release];

代替openURL , 我想您可以为此使用MFMailComposeViewController。使用此方法可以帮助您支持特殊字符

- (void)setMessageBody:(NSString*)body isHTML:(BOOL)isHTML

即

[yourMailPicker setMessageBody:body isHTML:YES];

, 尝试了您的代码，并出现了问题[NSURL URLWithString：urlString]，此行返回nil。 ,

NSString *subject = @\"Demo Subject\";
NSString *body = @\"<html><head>Header</head><body><a href=\\\"http://example.com\\\">Here is the demo link</a></body></html>\";
NSString *urlString = [NSString stringWithFormat:@\"mailto:?subject=%@&body=%@\",subject,body];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:urlString]];

我在这行更改检查并进行比较...

 NSString *urlString = [NSString stringWithFormat:@\"mailto:?subject=%@&body=%@\",body];