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今天对接了个渠道，里面有支付宝的SDK，然后接完各种报错，报错日志如下：

Undefined symbols for architecture arm64:  "_OBJC_CLASS_$_CTTelephonyNetworkInfo", referenced from:      objc-class-ref in AlipaySDK  "_CTRadioAccessTechnologyWCDMA", referenced from:      +[UIDevice(APEX) networkType:] in AlipaySDK  "_CTRadioAccessTechnologyHSDPA", referenced from:      +[UIDevice(APEX) networkType:] in AlipaySDK  "_CTRadioAccessTechnologyHSUPA", referenced from:      +[UIDevice(APEX) networkType:] in AlipaySDK  "_CTRadioAccessTechnologyEdge", referenced from:      +[UIDevice(APEX) networkType:] in AlipaySDK      -[AliSecXReachability networkStatusForFlags:] in AlipaySDK  "_CTRadioAccessTechnologyCDMAEVDORevA", referenced from:      +[UIDevice(APEX) networkType:] in AlipaySDK  "_CTRadioAccessTechnologyGPRS", referenced from:      +[UIDevice(APEX) networkType:] in AlipaySDK      -[AliSecXReachability networkStatusForFlags:] in AlipaySDK  "_CTRadioAccessTechnologyCDMAEVDORevB", referenced from:      +[UIDevice(APEX) networkType:] in AlipaySDK  "_CTRadioAccessTechnologyeHRPD", referenced from:      +[UIDevice(APEX) networkType:] in AlipaySDK  "_CTRadioAccessTechnologyCDMA1x", referenced from:      +[UIDevice(APEX) networkType:] in AlipaySDK      -[AliSecXReachability networkStatusForFlags:] in AlipaySDK  "_CTRadioAccessTechnologyCDMAEVDORev0", referenced from:      +[UIDevice(APEX) networkType:] in AlipaySDK  "_CTRadioAccessTechnologyLTE", referenced from:      +[UIDevice(APEX) networkType:] in AlipaySDK      -[AliSecXReachability networkStatusForFlags:] in AlipaySDKld: symbol(s) not found for architecture arm64clang: error: linker command failed with exit code 1 (use -v to see invocation)

这种各种iOS支付宝的SDK坑问题，很多都是缺少系统库，解决方法如下：

targets-Build Phases-link Binary with libraries添加支付宝依赖的系统库

更多问题可以家魏鑫lixiaowu1129，大家一同探讨解决iOS技术问题！

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