XCode 6.3 Warning: synthesize property

Question

In new Xcode 6.3 I get this warning:

Auto property synthesis will not synthesize property 'homeInt'; it will be implemented by its superclass, use @dynamic to acknowledge intention

How I can remove it?

Solution 1

I simply removed this property declaration, because it has already been declared in parent class

Solution 2

If you are overriding the same property from the super class on purpose, then in your *.m or *.mm file, add @dynamic like:

@implementation MyClass

@dynamic homeInt;

// ...

@end

If not, rename the property.

Solution 3

Following on @mplace's comment, in my case I was overriding the property to refine the type of the property to a subclass of the original class of the property. So, I did need the @property override.

Here's what I'm using:

#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wobjc-property-synthesis"
// superclass type for currentValue was "id"
@property (nonatomic, strong) NSDate *currentValue;
#pragma clang diagnostic pop

Note that it's "-Wobjc-property-synthesis" and not "-Wno-objc-property-synthesis"

See also https://github.com/couchbase/couchbase-lite-ios/issues/660

Solution 4

If you want to avoid adding @dynamic <varName> each place that you have overridden a super class's property intentionally, you can add the -Wno-objc-property-synthesis flag to "Other Warning Flags" under your projects build settings. This will suppress the warning project-wide.

Solution 5

this cause by child class define the same property name override to parent class，such as：
1）child class "AFHTTPSessionManager" have define :

@property (nonatomic, strong) AFHTTPResponseSerializer <AFURLResponseSerialization> * **responseSerializer**;

2）parent class "AFURLSessionManager" have define:

@property (nonatomic, strong) id <AFURLResponseSerialization> **responseSerializer**;

3）cause by above, warning come! if want remove it ,just rename the conflict property name!
4) or as it suggest, add "@dynamic homeInt" in your implement file;

View more solutions

Comments

[Bradley Thomas]

I see the same warnings for AFNetworking. Question is, are these anything to be concerned about? Do they even need attention for this library

[zmingchun]

it has fixed! github.com/AFNetworking/AFNetworking/commit/… @BradThomas

[ecotax]

This is correct for warnings resulting from AFNetworking properties. The original question wasn't about one of those though.

[AnthonyMDev]

This isn't suppressing the warnings for me... I'm using Cocoapods, not sure if that is overriding my flags.

[Chris Prince]

-Wno-objc-property-synthesis does not work for me either to suppress this warning. Any one else have ideas?

[Chris Prince]

Let me refine that. It doesn't work when I put it inline with the code with "#pragma clang diagnostic ignored", but it does work when I put it with the compiler flags. I'd rather not make it general across all my code with the compiler flags...

[hyperspasm]

I'm glad I'm not the only one who accidentally ends sentences with a semicolon;

[talentlife]

@dynamic is better