dlopen returns 应用终止后为 NULL

Question

我正在使用 dlsym 加载私有 API（iOS 9.3 需要）：

handle = dlopen(CORETELPATH, RTLD_LAZY);
_CTServerConnectionCreate = dlsym(handle, "_CTServerConnectionCreate");

当我终止应用程序（在多任务模式下从底部滑动）并重新启动应用程序时，它在第二行崩溃。

handle等于NULL我两次加载库都没有成功

我试图用 dlerror() 得到错误，但它 returns 也 NULL。

有人遇到这个问题吗？如何解决？

编辑： 这是完整的代码； if (handle != NULL) 应用程序不会崩溃，但私有框架也不会加载

#define CORETELPATH "/System/Library/PrivateFrameworks/CoreTelephony.framework/CoreTelephony"

handle = dlopen(CORETELPATH, RTLD_LAZY);
            NSLog(@"DL Error : %s", dlerror());
            if (handle != NULL) {
                _CTServerConnectionCreate = dlsym(handle, "_CTServerConnectionCreate");
                CTResultConnection = _CTServerConnectionCreate(NULL, simMonitorCallback, NULL);
                _CTServerConnectionAddToRunLoop = dlsym(handle, "_CTServerConnectionAddToRunLoop");
                _CTServerConnectionAddToRunLoop(CTResultConnection, CFRunLoopGetCurrent(), kCFRunLoopCommonModes);
                _CTServerConnectionRegisterForNotification = dlsym(handle, "_CTServerConnectionRegisterForNotification");
                _CTServerConnectionUnregisterForNotification = dlsym(handle, "_CTServerConnectionUnregisterForNotification");
                _CTServerConnectionRegisterForNotification(CTResultConnection, kCTSIMSupportSIMStatusChangeNotification);
                _CTServerConnectionGetSIMStatus = dlsym(handle, "_CTServerConnectionGetSIMStatus");
                _CTServerConnectionCopyMobileEquipmentInfo = dlsym(handle, "_CTServerConnectionCopyMobileEquipmentInfo");
            }

Answer 1

似乎将 Private API 路径更改为 public 可以解决问题；并且对 private APIs 的调用仍然有效：

#define CORETELPATH "/System/Library/Frameworks/CoreTelephony.framework/CoreTelephony"

dlopen returns 应用终止后为 NULL

dlopen returns NULL after app kill

ios

dlopen

dynamic-library