单击iOS中的按钮时，如何打开带有数字的iPhone呼叫屏幕小键盘？

在您认为我之前，我不是Popeye提供其他答案的人。

一直到我的答案。有两种方法可以做到这一点

// Pick one of the two ways from below, one will return you to the app afterwards the other will not.
// This version of of creating the number will open the dialer but will not return you to the app afterwards.
NSURL *phoneNumber = [NSURL urlWithString:[NSString stringWithFormat:@"tel://%@", yourNumberString]];

// Whilst this version will return you to your app once the phone call is over.
NSURL *phoneNumber = [NSURL urlWithString:[NSString stringWithFormat:@"telprompt://%@", yourNumberString]];

// Now that we have our `phoneNumber` as a URL. We need to check that the device we are using can open the URL.
// Whilst iPads, iPhone, iPod touchs can all open URLs in safari mobile they can't all 
// open URLs that are numbers this is why we have `tel://` or `telprompt://`
if([[UIApplication sharedApplication] canOpenURL:phoneNumber]) {
    // So if we can open it we can now actually open it with
    [[UIApplication sharedApplication] openURL:phoneNumber];
}

希望这对您有任何问题的帮助，请问一下。