iOS 三种打电话方法

1,这种方法,拨打完电话回不到原来的应用,会停留在通讯录里,而且是直接拨打,不弹出提示
NSMutableString  * str=[[ NSMutableString   alloc initWithFormat : @"tel:%@" , @"400-xxx-xxxx" ];
[[UIApplication sharedApplication] openURL:[NSURL URLWithString:str]];
    

2,这种方法,打完电话后还会回到原来的程序,也会弹出提示,推荐这种
    NSMutableString * str=[[NSMutableString allocinitWithFormat:@"tel:%@",@"400-xxx-xxxx"];
    
UIWebView * webview = [[UIWebView allocinit];
    [webview 
loadRequest:[NSURLRequest requestWithURL:[NSURL URLWithString:str]]];
    [
self.view addSubview:webview];

3,这种方法也会回去到原来的程序里(注意这里的telprompt),也会弹出提示
    NSMutableString  * str=[[ NSMutableString   alloc initWithFormat : @"telprompt://%@" , @" 400-xxx-xxxx " ];
    dispatch_async(dispatch_get_global_queue(0, 0), ^{

        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:str]];

    });

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转载自blog.csdn.net/joyliyan/article/details/71455538
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