Encapsulate the initWithNSDictionary: method
This method receives an NSDictionary object and returns a PersonModel object.
#pragma mark - 使用runtime将JSON转成Model- (void)json2Model { NSString *file = [[NSBundle mainBundle] pathForResource:@"Persons" ofType:@"json"]; NSData *data = [NSData dataWithContentsOfFile:file]; NSMutableArray *array = [NSJSONSerialization JSONObjectWithData:data options:NSJSONReadingMutableContainers error:nil]; for (NSDictionary *model in array) { PersonModel *person = [[PersonModel alloc] initWithNSDictionary:model]; NSLog(@"%@, %ld, %@, %@", person.name, (long)person.age, person.city, person.job); }}
Implementation using runtime
The header file of PersonModel is as follows:
#import
Implementation file:
#import "PersonModel.h"import <objc/runtime.h>
@implementation PersonModel
(instancetype)initWithNSDictionary:(NSDictionary *)dict {
self = [super init];
if (self) {
[self prepareModel:dict];
}
return self;
}(void)prepareModel:(NSDictionary )dict {
NSMutableArray keys = [[NSMutableArray alloc] init];u_int count = 0;
objc_property_t properties = class_copyPropertyList([self class], &count);
for (int i = 0; i < count; i++) {
objc_property_t property = properties[i];
const char propertyCString = property_getName(property);
NSString *propertyName = [NSString stringWithCString:propertyCString encoding:NSUTF8StringEncoding];
[keys addObject:propertyName];
}
free(properties);for (NSString *key in keys) {
if ([dict valueForKey:key]) {
[self setValue:[dict valueForKey:key] forKey:key];
}
}
}
@end
The code in it is also very simple:
Use class_copyPropertyList to get a list of all properties of the Model, traverse the list and use property_getName to get all the property names.
For properties defined in PersonModel, use KVC to assign the value in dict to the property.#
Reprinted from: [id]: https://blog.csdn.net/icetime17/article/details/52040301