iOS 数组／字典转json

NSMutableArray *tempArr = [NSMutableArray array]; //这里不要用for-in 先找到模型，然后给可变字典赋值，最后装到数组里 NSMutableDictionary *dic = [NSMutableDictionary dictionary]; for (int i = 0; i < self.dataSourceArr.count; i++) { PerponModel *model = self.dataSourceArr[i]; [dic setValue:model.name forKey:@"realname"]; [dic setValue:model.phoneNumber forKey:@"mobile"]; [tempArr addObject:dic]; } //dataWithJSONObject：后面这个是一个id类型的这样放数组就转数组，字典就转字典 //NSJSONWritingPrettyPrinted是一个枚举 NSData *data = [NSJSONSerialization dataWithJSONObject:tempArr options:NSJSONWritingPrettyPrinted error:nil]; NSString *str = [[NSString alloc] initWithData:data encoding:NSUTF8StringEncoding];