ios - 使用区号（前缀）从应用程序发起电话呼叫

Question

在我的代码中，我有这个片段可以用拨号前缀拨打电话（基本上是一个“打电话给我”按钮）：

[[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"telprompt://+0000000000"]];
if(SYSTEM_VERSION_LESS_THAN(@"7.0")) {
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel:+0000000000"]];
}

我想知道iPhone是否会在不需要时隐藏拨号前缀（？）。

谢谢，

Answer 1

Second answer to my own question :

according to this post, mobile Country code doesn't change when roaming : Does CTCarrier mobileNetworkCode change when roaming?

Best way is therefore :

{

CTTelephonyNetworkInfo *info = [CTTelephonyNetworkInfo new];

CTCarrier *carrier = info.subscriberCellularProvider;

NSLog(@"country code is: %@", carrier.mobileCountryCode);
// Get mobile network code



if ([carrier.mobileCountryCode isEqualToString:@"208"]){
    [[UIApplication sharedApplication]
     openURL:[NSURL URLWithString:@"telprompt://0000000000"]];
}

   else {
    [[UIApplication sharedApplication]
     openURL:[NSURL URLWithString:@"telprompt://+33000000000"]];
}


    if(SYSTEM_VERSION_LESS_THAN(@"7.0")) {
        if ([carrier.mobileCountryCode isEqualToString:@"208"]){
            [[UIApplication sharedApplication]
             openURL:[NSURL URLWithString:@"tel://0000000000"]];
        }
        else {
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel:+33000000000"]];
        }
}
}

Works fine too.

Answer 2

对于那些感兴趣的人，我找到了一种简单的方法，使用NSLocale currentLocale：

// Get the current locale.
NSLocale *currentLocale = [NSLocale currentLocale];
// Get country code, e.g. ES (Spain), FR (France), etc.
NSString *countryCode = [currentLocale objectForKey:NSLocaleCountryCode];

if ([countryCode isEqualToString:@"FR"]){
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"telprompt://0000000000"]];
}
else {
    [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"telprompt://+33000000000"]];
}

if(SYSTEM_VERSION_LESS_THAN(@"7.0")) {
    if ([countryCode isEqualToString:@"FR"]){
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel://0000000000"]];
    }
    else {
        [[UIApplication sharedApplication] openURL:[NSURL URLWithString:@"tel:+ 33000000000"]];
    }
}

效果很好。