#import "ViewController.h"

#import <CoreData/CoreData.h>

#import "Person.h"

@interface ViewController ()

@end

@implementation ViewController

{

    NSManagedObjectContext *_context;

}

- (void)viewDidLoad {

    [super viewDidLoad];

    //获取上下文

    _context = [[NSManagedObjectContext alloc]init];

    //添加model

    NSManagedObjectModel *model = [NSManagedObjectModel mergedModelFromBundles:nil];

    NSPersistentStoreCoordinator *store = [[NSPersistentStoreCoordinator alloc]initWithManagedObjectModel:model];

    NSString *doc = [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)lastObject];

    NSString *sqlitePath = [doc stringByAppendingString:@"/person.sqlite"];

   // NSString *sqlitePath = [doc stringByAppendingPathExtension:@"person.sqlite"];

    NSLog(@"%@",sqlitePath);

    NSError *error = nil;

    [store addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:[NSURL fileURLWithPath:sqlitePath] options:nil error:&error];

    _context.persistentStoreCoordinator = store;

    [self addPerson];

    [self findPerson];

}

- (void)addPerson{

    //创建对象

    Person *person = [NSEntityDescription insertNewObjectForEntityForName:@"Person" inManagedObjectContext:_context];

    person.name = @"hzt";

    person.age = @"15";

    person.phone = @"1314";

    //保存数据

    NSError *error = nil;

    if ([_context save:&error]){

        NSLog(@"保存成功");

    }else{

        NSLog(@"保存失败");

    }

}

- (void)findPerson{

    NSFetchRequest *request = [NSFetchRequest fetchRequestWithEntityName:@"Person"];

    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"name = %@",@"hzt"];

    request.predicate = predicate;

    NSError *error = nil;

    NSArray *array = [_context executeFetchRequest:request error:&error];

    for (Person *per in array){

        NSLog(@"%@,%@",per.name,per.age);

    }

}

------------------参考文献-------------------------------

http://www.jianshu.com/p/8299b7360dd6

数据存储之CoreData