获取 iPhone 运营商接收状态？（不是互联网）

发布于 2024-12-27 13:10:12 字数 124 浏览 1 评论 0原文

我需要知道用户理论上是否可以打电话。

有谁知道当用户的iPhone能够连接到运营商的网络时如何“返回true”（使用Cocoa iOS）？（不是互联网）

或者如何以编程方式告诉用户“有多少个接收格”？

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本宫微胖 2025-01-03 13:10:13

将您的应用程序链接到 CoreTelephony.framework

您可以检查 CTCarrier 对象并查看对于需要连接的某些属性是否有有效结果 (!=nil)电话提供商。

例如，下面有一段代码，用于检查 CTCarrier 的 mobileNetworkCode 属性。当且仅当设备连接到电话提供商时，此属性为 != nil（您所需的任务，即用户能够拨打电话，包含在上述状态中）。

CTTelephonyNetworkInfo *netInfo = [[CTTelephonyNetworkInfo alloc] init];
CTCarrier *carrier = [netInfo subscriberCellularProvider];

//The value for this property is nil if any of the following apply:
//  - The device is in Airplane mode.
//  - There is no SIM card in the device.
//  - The device is outside of cellular service range.
NSString *mnc = [carrier mobileNetworkCode]; 

if(!mnc) {
    //if we're here, than probably we're disconnected from the Phone Provider
}

netInfo.subscriberCellularProviderDidUpdateNotifier = ^ (CTCarrier * carrier) {
    //this block is executed each time we've a change to the state of the carrier
    //be sure to check the carrier object, in order to see is we're connected to a
    //phone provider.

};

更多信息请参见 Apple 开发者文档网址： http ://developer.apple.com/library/IOs/#documentation/NetworkingInternet/Reference/CTCarrier/Reference/Reference.html

Link your application against the CoreTelephony.framework

You can check the CTCarrier object and see if you've a valid result (!=nil) for some property that require a connection with the Phone Provider.

For example, below there's a snip of code that check against the mobileNetworkCode property of CTCarrier. This property is != nil if-and-only-if the device is connected to a Phone Provider (your desired task, user able to make a phone call, is included in the state described above).

CTTelephonyNetworkInfo *netInfo = [[CTTelephonyNetworkInfo alloc] init];
CTCarrier *carrier = [netInfo subscriberCellularProvider];

//The value for this property is nil if any of the following apply:
//  - The device is in Airplane mode.
//  - There is no SIM card in the device.
//  - The device is outside of cellular service range.
NSString *mnc = [carrier mobileNetworkCode]; 

if(!mnc) {
    //if we're here, than probably we're disconnected from the Phone Provider
}

netInfo.subscriberCellularProviderDidUpdateNotifier = ^ (CTCarrier * carrier) {
    //this block is executed each time we've a change to the state of the carrier
    //be sure to check the carrier object, in order to see is we're connected to a
    //phone provider.

};

more info at the Apple Developer Documentation url: http://developer.apple.com/library/IOs/#documentation/NetworkingInternet/Reference/CTCarrier/Reference/Reference.html

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