ios最佳項目內撥號撥打電話實現

廢話少說直接上代碼：

    //呼叫
    NSMutableString *str=[[NSMutableString alloc] initWithFormat:@"tel:%@",@"139xxxxxxxxx"];
    UIWebView *callWebview = [[UIWebView alloc] init];
    [callWebview loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:str]]];
    [self.view addSubview:callWebview];