属性转换与runtime

获取Model的实体属性

- (NSArray*)allPropertyNames

{

NSMutableArray*allNames = [[NSMutableArray alloc]init];

unsigned int propertyCount =0;

objc_property_t *propertys =class_copyPropertyList([selfclass], &propertyCount);

for(inti =0; i < propertyCount; i ++)

{

objc_property_tproperty = propertys[i];

constchar* propertyName =property_getName(property);

[allNames addObject:[NSStringstringWithUTF8String:propertyName]];

}

free(propertys);

return allNames;

}

实现Get和Set方法

//创建Getter方法

- (SEL)createGetterWithPropertyName:(NSString*)propertyName

{

return NSSelectorFromString(propertyName);

}

//创建Setter方法

- (SEL)createSetterWithPropertyName:(NSString*)propertyName

{

if(!propertyName)

{

return nil;

}

NSString*firstStr = [propertyName substringToIndex:1];

NSString*upperFirstStr = firstStr.uppercaseString;

NSMutableString*mutablePropertyName = [[NSMutableString alloc]initWithString:propertyName];

[mutablePropertyName replaceCharactersInRange:NSMakeRange(0,1)withString:upperFirstStr];

[mutablePropertyName insertString:@"set"atIndex:0];

[mutablePropertyName appendString:@":"];

return NSSelectorFromString(mutablePropertyName);

}

执行Get和Set

//执行get方法

- (void)displayCurrentModleProperty

{

NSArray*propertyArray = [self allPropertyNames];

NSMutableString*resultString = [NSMutableString new];

for(inti =0; i < propertyArray.count; i ++)

{

SELgetSel = [selfcreateGetterWithPropertyName:propertyArray[i]];

if([self respondsToSelector:getSel])

{

NSMethodSignature*signature = [self methodSignatureForSelector:getSel]; 

NSInvocation*invocation = [NSInvocation invocationWithMethodSignature:signature];

[invocation setTarget:self];

[invocation setSelector:getSel];

NSObject*returnValue =nil;

[invocation invoke];

[invocation getReturnValue:&returnValue];

[resultString appendFormat:@"%@\n",returnValue];

}

}

NSLog(@"%@",resultString);

}

//执行setter方法

- (void)setCurrentModelValueWithPropertyStr:(NSString*)propertyStr withValue:(NSString*)strValue;

{

SEL setSel = [self createSetterWithPropertyName:propertyStr];

NSMethodSignature*signature = [self methodSignatureForSelector:setSel];

NSInvocation*invocation = [NSInvocation invocationWithMethodSignature:signature];

[invocation setTarget:self];

[invocation setSelector:setSel];

[invocation setArgument:&strValueatIndex:2];

[invocation invoke];

}

Dictionary的Key与Model的属性不同的处理方式

//映射 及对映射的处理

- (NSDictionary*)propertyMapDic

{

return@{

@"name":@"name",

@"value":@"age",

};

}

- (void)assignToPropertyWithNoMapDictionary:(NSDictionary*)data

{

NSDictionary*propertyMapDic = [self propertyMapDic];

NSArray *dicKeyArray = [data allKeys];

NSMutableDictionary *tempDic = [NSMutableDictionary new];

for(inti =0; i < dicKeyArray.count; i ++)

{

NSString*key = dicKeyArray[i];

[tempDic setObject:data[key]forKey:propertyMapDic[key]];

}

[self assginToPropertyWithDictonary:tempDic];

}

- (void)assginToPropertyWithDictonary:(NSDictionary*)dic

{

NSArray*propertyArray = [self allPropertyNames];

[propertyArray enumerateObjectsUsingBlock:^(id_Nonnullobj,NSUIntegeridx,BOOL*_Nonnullstop) {

NSString*propertyStr = (NSString*)obj;

NSString*valueStr = [dic objectForKey:propertyStr];

[self setCurrentModelValueWithPropertyStr:propertyStrwithValue:valueStr];

}];

[self displayCurrentModleProperty];

}