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Alex Rivera
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I am develop a iPhone application, in which i need to use JSON to receive data from server. In the iPhone side, I convert the data into NSMutableDictionary . However, there is a date type data are null. I use the following sentence to read the date. NSString *arriveTime = [taskDic objectForKey:@"arriveTime"]; NSLog(@"%@", arriveTime); if (arriveTime) { job.arriveDone = [NSDate dateWithTimeIntervalSince1970:[arriveTime intValue]/1000]; } When the arriveTime is null, how can i make the if statement. I have tried [arriveTime length] != 0, but i doesn't work, because the arriveTime is a NSNull and doesn't have this method.
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