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copied!<p>I've found that boliva's solution works fine in the simulator, but on device the fixed length substring causes problems. I have written a more Objective-C-friendly solution to this problem that works on the device. In my version, I convert the C-String of the attributes to an NSString and perform string operations on it to get a substring of just the type description.</p> <pre><code>/* * @returns A string describing the type of the property */ + (NSString *)propertyTypeStringOfProperty:(objc_property_t) property { const char *attr = property_getAttributes(property); NSString *const attributes = [NSString stringWithCString:attr encoding:NSUTF8StringEncoding]; NSRange const typeRangeStart = [attributes rangeOfString:@"T@\""]; // start of type string if (typeRangeStart.location != NSNotFound) { NSString *const typeStringWithQuote = [attributes substringFromIndex:typeRangeStart.location + typeRangeStart.length]; NSRange const typeRangeEnd = [typeStringWithQuote rangeOfString:@"\""]; // end of type string if (typeRangeEnd.location != NSNotFound) { NSString *const typeString = [typeStringWithQuote substringToIndex:typeRangeEnd.location]; return typeString; } } return nil; } /** * @returns (NSString) Dictionary of property name --> type */ + (NSDictionary *)propertyTypeDictionaryOfClass:(Class)klass { NSMutableDictionary *propertyMap = [NSMutableDictionary dictionary]; unsigned int outCount, i; objc_property_t *properties = class_copyPropertyList(klass, &outCount); for(i = 0; i < outCount; i++) { objc_property_t property = properties[i]; const char *propName = property_getName(property); if(propName) { NSString *propertyName = [NSString stringWithCString:propName encoding:NSUTF8StringEncoding]; NSString *propertyType = [self propertyTypeStringOfProperty:property]; [propertyMap setValue:propertyType forKey:propertyName]; } } free(properties); return propertyMap; } </code></pre>

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