iOS调用拨号，短信，邮件，浏览器，AppStore，应用评分

1.调用系统拨号

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel:电话号码"]];

2.调用系统短信

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"sms://电话号码"]];

2.1.如果要设置默认的短信内容

这个设置默认短信的时候，是在你的APP中会跳转出一个短信的编辑界面，仍然在自己APP的界面里面，并非跳转到系统的短信界面
同时这个默认的内容用户是可以修改过后在发送的，相当于编辑状态
// 导入头文件
#import <MessageUI/MFMessageComposeViewController.h>
// 添加代理
MFMessageComposeViewControllerDelegate

- (void)sendSMS{

    MFMessageComposeViewController *messageViewController = [[MFMessageComposeViewController alloc] init];
    messageViewController.messageComposeDelegate = self;

    if ([MFMessageComposeViewController canSendText]) {//判断能否发送短信
        messageViewController.recipients = @[@"手机号码1",@"手机号码2"]; // 添加收件人号码，可以添加多个
        messageViewController.body = @"要发送的短信内容"; // 要发送的内容

        [self presentViewController:messageViewController animated:YES completion:nil];
    }
}

#pragma mark - MFMessageComposeViewControllerDelegate
- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result{

    //可以判断短信发送的结果
    if (result == MessageComposeResultCancelled) {
        NSLog(@"短信被取消");
    }else if (result == MessageComposeResultSent) {
        NSLog(@"短信发送成功");
    }else if (result == MessageComposeResultFailed) {
        NSLog(@"短信发送失败");
    }
}

3.调用邮件

[[UIApplication sharedApplication]openURL:[NSURL URLWithString:@"mailto://收件人邮箱"]];

3.1.设置默认的邮件内容
跟上面设置短信的默认内容一样

// 导入头文件
#import <MessageUI/MFMailComposeViewController.h>
// 添加代理
MFMailComposeViewControllerDelegate

- (void)sendMail{

    MFMailComposeViewController * mcViewController = [[MFMailComposeViewController alloc] init];
    mcViewController.mailComposeDelegate = self;

    if ([MFMailComposeViewController canSendMail]) {
        // 收件人
        [mcViewController setToRecipients:@[@"邮箱地址1"]];
        // 抄送
        [mcViewController setCcRecipients:@[@"邮箱地址2",@"邮箱地址3"]];
        // 密送
        [mcViewController setBccRecipients:@[@"邮箱地址4"]];
        // 主题
        [mcViewController setSubject:@"邮件主题"];
        // 内容
        [mcViewController setMessageBody:@"邮件内容" isHTML:NO];

        [self presentViewController:mcViewController animated:YES completion:nil];
    }
}

#pragma mark - MFMailComposeViewControllerDelegate
- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error{
    if (result == MessageComposeResultCancelled) {
        NSLog(@"邮件被取消");
    }else if (result == MessageComposeResultSent) {
        NSLog(@"邮件发送成功");
    }else if (result == MessageComposeResultFailed) {
        NSLog(@"邮件发送失败");
    }
}

4.调用safari

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"http://网址"]];

5.调用APPStore界面

跳转到APPStore的下载界面的时候拥有两种情况，都是可以跳转的

5.1跳转到APPStore 官方下载界面
1).以itms-apps://或https:// 开头的应用详情页链接，跳转到AppStore

//以itms-apps:为开头,拼接下载地址
NSString *url = [NSString stringWithFormat:@"itms-apps://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=%@",@"1014939463"];
//以https://为开头，拼接下载地址
NSString *url = [NSString stringWithFormat:@"https://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=%@",@"1014939463"];
//跳转到appstore
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];

2).以itms://为开头的详情连接，虽然是跳转到 iTunes Store，但是打开的仍然是应用的下载页

//以itms://为头拼接下载地址
NSString *url = [NSString stringWithFormat:@"itms://itunes.apple.com/WebObjects/MZStore.woa/wa/viewSoftware?id=%@",@"1014939463"];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];

6.跳转到应用评分页

此时以itms-apps://和itms://开头的链接都可以，而此时以https://开头的链接不可以

NSString *url = [NSString stringWithFormat:@"itms-apps://itunes.apple.com/WebObjects/MZStore.woa/wa/viewContentsUserReviews?type=Purple+Software&id=%@",@"1014939463"];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:url]];