iOS借助PrivateFrameworks

Question

在研究iOS 9中可用的PrivateFrameworks期间，我找到了有趣的library，可以访问越狱iPhone的通话记录。问题是如何使用这个框架？

我的简要例子：

 NSBundle *b = [NSBundle bundleWithPath:@"/System/Library/PrivateFrameworks/CallHistory.framework"];
    BOOL success = [b load];

    if (success) {
        Class CallHistoryDBHandle = NSClassFromString(@"CallHistoryDBClientHandle");
        SEL theSelector = NSSelectorFromString(@"fetchAllNoLimit");
        id si = [CallHistoryDBHandle valueForKey:@"createForClient"];
        NSLog(@"-- %@", [si performSelector:theSelector]);
    } else {
         NSLog(@"NO");
    }