iOS三种打电话方法

1、方法一

    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:[NSString stringWithFormat:@"tel://183########""]]];

2、方法二 推荐

    NSMutableString *str = [[NSMutableString alloc] initWithFormat:@"tel:%@",@"183########"];
    UIWebView *callWebview = [[UIWebView alloc] init];
    [callWebview loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:str]]];
    [self.view addSubview:callWebview];

3.方法三

NSMutableString *string=[[NSMutableString alloc] initWithFormat:@"telprompt://%@",@"183#######"];
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:string]];