iOS-model(自定义)排序

一、自定义model

Person *per = [[Person alloc] init];

per.name =@"m";

per.age =89;

Person *per1 = [[Person alloc] init];

per1.name =@"s";

per1.age =18;

Person *per2 = [[Person alloc] init];

per2.name =@"k";

per2.age =44;

二、装入数组

NSMutableArray *array = [NSMutableArray array];

[array addObject:per];

[array addObject:per1];

[array addObject:per2];

三、为model按年龄属性排序(核心代码)

NSArray *resultArray = [array sortedArrayUsingComparator:^NSComparisonResult(id obj1,id obj2) {

    Person *per1 = obj1;

    Person *per2 = obj2;

   if (per1.age > per2.age) {

       return NSOrderedDescending;//降序

    }else if (per1.age < per2.age){

       return NSOrderedAscending;//升序

    }else{

       return NSOrderedSame;//相等

    }

}];

for (Person *per in resultArray) {

    NSLog(@"per.age = %ld",per.age);

}