我们在开发APP 的过程中会经常遇到这样的需求，跳转到客服QQ界面，拨打电话等，直接上代码
1.关于APP跳转到客服QQ界面
// 空白的webview
UIWebView * webView = [[UIWebView alloc] initWithFrame:CGRectZero];
if ([[UIApplication sharedApplication] canOpenURL:[NSURL URLWithString:@"mqq://"]]) {
//1691838426 是QQ号
NSString * string = @"mqq://im/chat?chat_type=wpa&uin=1691838426&version=1&src_type=web";
UIAlertController *actionSheet = [UIAlertController alertControllerWithTitle:@"shipping要打开你的QQ" message:nil preferredStyle:UIAlertControllerStyleAlert];
UIAlertAction *callAction = [UIAlertAction actionWithTitle:@"确定" style:UIAlertActionStyleDefault handler:^(UIAlertAction * _Nonnull action) {
[webView loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:string]]];
}];
UIAlertAction *cancelAction = [UIAlertAction actionWithTitle:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction * _Nonnull action) {
}];
[actionSheet addAction:cancelAction];
[actionSheet addAction:callAction];
[[UIApplication sharedApplication].keyWindow.rootViewController presentViewController:actionSheet animated:YES completion:nil];
[[UIApplication sharedApplication].keyWindow.rootViewController.view addSubview:webView];
}else{
UIAlertView*ale=[[UIAlertView alloc] initWithTitle:@"提示" message:@"您没有安装手机QQ，请安装手机QQ后重试，或用PC进行操作。" delegate:self cancelButtonTitle:nil otherButtonTitles:@"确定", nil];
[ale show];
}
2.关于APP直接拨打电话又三种实现方式
-
第一种：直接拨打电话，没有提示
//拨打电话
UIApplication *ac = [UIApplication sharedApplication];NSURL *url = [NSURL URLWithString:[@"tel://" stringByAppendingString:@"你要放的电话号码"]]; [ac openURL:url]; 第二种：打完电话后还会回到原来的程序，也会弹出提示，
NSMutableString * str=[[NSMutableString alloc] initWithFormat:@"tel:%@",@"你要放的电话号码"];
UIWebView * callWebview = [[UIWebView alloc] init];
[callWebview loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:str]]];
[self.view addSubview:callWebview];第三种： 打完电话后还会回到原来的程序，也会弹出提示，
NSMutableString * str=[[NSMutableString alloc] initWithFormat:@"telprompt://%@",@"你要放的电话号码"];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:str]];
