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  • MagicalRecord(简化CoreData操作)

    1.新建项目不勾选coredata

    2.pod 'MagicalRecord'

    3.新建模型文件

    4.添加实体和属性

    5.Create NSManagedObject subclass

    6.增

        Person *person1 = [Person MR_createEntity];

        person1.firstname = @"Frank";

        person1.lastname = @"Zhang";

        person1.age = @25;

        Person *person2 = [Person MR_createEntity];

        person2.firstname = @"Fra";

        person2.lastname = @"ng";

        person2.age = @24;

        [[NSManagedObjectContext MR_defaultContext]MR_saveWithBlock:^(NSManagedObjectContext * _Nonnull localContext) {

            NSLog(@"saveOK");

        }];

    7.查

        NSArray * persons = [Person MR_findAll];

        NSArray * personsSorted = [Person MR_findAllSortedBy:@"firstname" ascending:YES];

        NSArray * personsAgeEuqals25 = [Person MR_findByAttribute:@"age" withValue:[NSNumber numberWithInt:25]];

        Person *firstperson = [Person MR_findFirst];

    8.删

        Person *person = [Person MR_findAll].firstObject;

        [person MR_deleteEntity];

        [[NSManagedObjectContext MR_defaultContext]MR_saveWithBlock:^(NSManagedObjectContext * _Nonnull localContext) {

            NSLog(@"saveOK");

        }];

    9.改

        Person *person = [Person MR_findAll].firstObject;

        person.lastname = @'"fdbsfb";

        [[NSManagedObjectContext MR_defaultContext]MR_saveWithBlock:^(NSManagedObjectContext * _Nonnull localContext) {

            NSLog(@"saveOK");

        }];

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  • 原文地址:https://www.cnblogs.com/huoran1120/p/5475251.html
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