Question

当我将Xcode更新为4.4.1时，它给出了22个使用RestKit库的警告。错误是这样的：

Direct access to objective-c's isa is deprecated in favor of object_setClass() and object_getClass()

我通过替换：

修复了18个警告

将%lu替换为%u

将object->isa替换为object_getClass(object)

将keyObject->isa替换为object_getClass(keyObject)

还有4个警告我无法解决，以下是其描述的警告：

文件名1：RKManagedObjectMappingOperation.m 警告Line1：

NSAssert(mapping, @"Attempted to connect relationship for keyPath '%@' without a relationship mapping defined.");

警告说明1：

more '%' conversations than data arguments

文件名2：RKReachabilityObserver.m 警告Line2：

return [NSString stringWithFormat:@"<%@: %p host=%@ isReachabilityDetermined=%@ isMonitoringLocalWiFi=%d reachabilityFlags=%@>",
            NSStringFromClass([self class]), self, self.host, self.isReachabilityDetermined ? @"YES" : @"NO",
            self.isMonitoringLocalWiFi ? @"YES" : @"NO", [self reachabilityFlagsDescription]];

警告说明2：

format specifies type int but the argument has type NSString

文件名3：JSONKit.m 警告Line3：

if(JK_EXPECT_F(((id)keys[idx])->isa != encodeState->fastClassLookup.stringClass) && JK_EXPECT_F([(id)keys[idx] isKindOfClass:[NSString class]] == NO)) { jk_encode_error(encodeState, @"Key must be a string object."); return(1); }

警告说明3：

Direct access to objective-c's isa is deprecated in favor of object_setClass() and object_getClass()

文件名4：NSManagedObject + ActiveRecord.m 警告第4行：

RKLogError(@"Property '%@' not found in %@ properties for %@", propertyName, [propDict count], NSStringFromClass(self));

警告说明4：

format specifies type id but the argument has type NSUInteger

如何解决？

Answer 1

警告1：

NSAssert(mapping, @"Attempted to connect relationship for keyPath '%@' without a relationship mapping defined.");

变为

NSAssert(mapping, @"Attempted to connect relationship for keyPath '%@' without a relationship mapping defined.", <<put the corresponding keyPath here >> );

或

NSAssert(mapping, @"Attempted to connect relationship for a keyPath without a relationship mapping defined.");

它说“比'数据参数更多'％'对话”意味着你有占位符，在这种情况下是％@，但没有填充它们的参数。所以要么提供参数，要么删除占位符。

警告2：

return [NSString stringWithFormat:@"<%@: %p host=%@ isReachabilityDetermined=%@ isMonitoringLocalWiFi=%d reachabilityFlags=%@>",
        NSStringFromClass([self class]), self, self.host, self.isReachabilityDetermined ? @"YES" : @"NO",
        self.isMonitoringLocalWiFi ? @"YES" : @"NO", [self reachabilityFlagsDescription]];

变为

return [NSString stringWithFormat:@"<%@: %p host=%@ isReachabilityDetermined=%@ isMonitoringLocalWiFi=%@ reachabilityFlags=%@>",
        NSStringFromClass([self class]), self, self.host, self.isReachabilityDetermined ? @"YES" : @"NO",
        self.isMonitoringLocalWiFi ? @"YES" : @"NO", [self reachabilityFlagsDescription]];

注意isMonitoringLocalWiFi=%d部分获取%@而不是%d，因为您提供了字符串参数但是有一个整数占位符。

警告3：抱歉无法帮您解决这个问题。可能在我查看代码后，我会发布更新。

更新：尝试更改

((id)keys[idx])->isa

到

object_getClass( ((id)keys[idx]) )

警告4：

RKLogError(@"Property '%@' not found in %@ properties for %@", propertyName, [propDict count], NSStringFromClass(self));

成为

RKLogError(@"Property '%@' not found in %d properties for %@", propertyName, [propDict count], NSStringFromClass(self));

请注意第二个占位符应为%d而不是%@，因为您提供了一个整数，或者在这种情况下是一个NSUInteger，即[propDict count]参数。

更新到xcode 4.4.1 for RestKit后的警告

1 个答案: