Warning at didReceiveDate method from NSURLConnection

Question

At following method the compiler is showing a warning.

buffer is a NSMutableData declared in the header file.

This is the warning message:

 Local declaration of 'data' hides instance variable

And this is the method which throws the warning:

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    [buffer appendData:data];
}

Do you have instance variable with name ``data`` of type ``NSData``? Compiler is confused with which ``data`` property should use in ``appendData`` method. — damirstuhec, Mar 01 '14 at 07:42
Yes, but used for another method, you are right....Not seen before. — mvasco, Mar 01 '14 at 07:44
Yes please, i would be glad selecting your comment as the correct answer. — mvasco, Mar 01 '14 at 07:46

score 1 · Answer 1 · answered Mar 01 '14 at 07:47

- (void)connection:(NSURLConnection *)connection didReceiveData:(NSData *)data
{
    [buffer appendData:data];
}

your didReceiveData data type name and local instance variable name data will conflicted. because both of same name. so far you change the name of local declaration variable like

NSMutableData *localData;

score 1 · Accepted Answer · answered Mar 01 '14 at 07:47

1

The compiler is confused with which data property should use in appendData method. Make sure you only have one property with name data in that scope.

answered Mar 01 '14 at 07:47

damirstuhec

6,069
1
22
39

Warning at didReceiveDate method from NSURLConnection

2 Answers2