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  • dictionaryWithObjectsAndKeys

    NSDictionary    dictionaryWithObjectsAndKeys

       NSDictionary *parmDic = [NSDictionary dictionaryWithObjectsAndKeys:self.objClass.appId,@"appId",
                                    self.objClass.cityCd,@"cityCd",
                                    self.objClass.channelID,@"channelId",
                                    1,@"currentPage",
                                    1,@"pageSize",nil];
        
        NSDictionary *parmDic = [NSDictionary dictionaryWithObjectsAndKeys:@"SZ100",@"appId",
                                        @"苏州",@"cityCd",@"123",@"modelCd",
                                        1,@"channelId",
                                        1,@"currentPage",
                                        1,@"pageSize",nil];
        

    网络传参,走到这一步就挂了,报

    EXC_BAD_ACCESS ,90%的错误来源在于对一个已经释放的对象进行release操作。

    于是改成下面那样也不行,继续查,才知道是

    dictionaryWithObjectsAndKeys方法在遇到nil对象时,会以为是最终的结束标志。

    见,

    http://www.cocoachina.com/bbs/read.php?tid-124307.html

    最后就改成这样,才通过:

        NSMutableDictionary* parmDic = [NSMutableDictionary dictionary];
        [parmDic setValue:self.objClass.appId forKey:@"appId"];
        [parmDic setValue:self.objClass.cityCd forKey:@"cityCd"];
        [parmDic setValue:self.objClass.modelCd forKey:@"modelCd"];
        [parmDic setValue:self.objClass.channelID forKey:@"channelID"];
        [parmDic setValue:@(self.page) forKey:@"currentPage"];
        [parmDic setValue:@(self.pageSize)  forKey:@"pageSize"];
    

      

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  • 原文地址:https://www.cnblogs.com/developer-qin/p/4792696.html
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