Setnilvalueforkey:could not set nil as the value for the key distance. Solution

In a small project, this error occurs when the JSON data is parsed and assigned to a dictionary or array.
The main reason is that the value of the value of the assignment is nil, while the Nsdictionary and Nsarray storage objects cannot be nil, only the OC object.

0x7fb2a8558c50notsetastheforthe key distance.‘

Here is the value assigned to the distance variable is nil
Then you can override the method

- (void)setNilValueForKey:(NSString *)key;

- (void)setNilValueForKey:(NSString *)key {    if ([key isEqualToString:@"distance"]) {        0;    }else {        [super setNilValueForKey:key];    }}

As for the value of distance, combine the project to take reasonable value processing.

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Setnilvalueforkey:could not set nil as the value for the key distance. Solution