iOS常用跳转

打电话

1. 直接跳转拨号界面
2. 弹出拨号选择提示框(telprompt是私有方法上架可能会被禁止)
3. 创建一个UIWebView来加载URL，拨完后能自动跳回原来应用(这里的webView千万不要设置尺寸，不然会挡住其他页面)

   [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://110"] options:@{} completionHandler:nil];

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"telprompt://110"] options:@{} completionHandler:nil];

if (_webView == nil) {
        _webView =[[UIWebView alloc] initWithFrame:CGRectZero];
    }
[_webView loadRequest:[NSURLRequest requestWithURL:[NSURL URlWithString:@"tel//100"]]];

发短信

1. 直接跳到发短信界面，但是不能指定短信内容，而且不能自动回到原来应用
2. 如果想指定短信内容可以使用MessageUI框架

//第一种
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"sms://110"] options:@{} completionHandler:nil];

//第二种
导入头文件#import <MessageUI/MessageUI.h>   
MFMessageComposeViewControllerDelegate
初始化代理
MFMessageComposeViewController *messageVC =[[MFMessageComposeViewController alloc] init];
//发送短信内容
messageVC.body = @"你好？";//要发送的人
messageVC.recipients = @[@"110",@"911"];
//设置代理
messageVC.messageComposeDelegate = self;
[self presentViewController:messageVC animated:YES completion:nil];

// 当短信界面关闭的时候代用，发完后就会自动回到原应用
- (void)messageComposeViewController:(MFMessageComposeViewController *)controller didFinishWithResult:(MessageComposeResult)result
{
//关闭短信界面
[controller dismissViewControllerAnimated:YES completion:nil];
if (result == MessageComposeResultCancelled) {
}else if (result == MessageComposeResultSent)
{
}else if (result == MessageComposeResultFailed)
{
}
}

发邮件

1. 用苹果手机自带的邮件客户端，发送完邮件不会自动回到原应用
2. 和上面发短信差不多

//第一种
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"mailto://110@qq.com"] options:@{} completionHandler:nil];

//第一种
导入头文件
#import <MessageUI/MessageUI.h>   
MFMessageComposeViewControllerDelegate
//初始化代理
MFMailComposeViewController *mailVC = [[MFMailComposeViewController alloc] init];
//发送短信内容
[mailVC setMessageBody:@"你好?" isHTML:YES];
//要发送的人
[mailVC setToRecipients:@[@"",@""]];
//设置代理
mailVC.messageComposeDelegate = self;
[self presentViewController:mailVC animated:YES completion:nil];

- (void)mailComposeController:(MFMailComposeViewController *)controller didFinishWithResult:(MFMailComposeResult)result error:(NSError *)error
{//关闭邮件界面
[controller dismissViewControllerAnimated:YES completion:nil];
if (result == MFMailComposeResultCancelled) {
         NSLog(@"取消发送");
} else if (result == MFMailComposeResultSent) 
{
         NSLog(@"已经发出");
} else {
NSLog(@"发送失败");
}
}

跳转AppStore评分

//你应用在AppStore上面的ID
NSString *appid =@"456464646";
NSString *str = [NSString stringWithFormat: @"itms-apps://itunes.apple.com/cn/app/id%@?mt=8", appid];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:str] options:@{} completionHandler:nil];