CoreDataDemo
17891 단어 coredata
// User.h
// CoreDataDemo
//
// Created by gaokunpeng on 15/2/4.
// Copyright (c) 2015 qianfeng. All rights reserved.
//
#import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>
@interface User : NSManagedObject
@property (nonatomic, retain) NSString * name;
@property (nonatomic, retain) NSNumber * age;
@property (nonatomic, retain) NSData * headImage;
@end
// User.m
// CoreDataDemo
//
// Created by gaokunpeng on 15/2/4.
// Copyright (c) 2015 qianfeng. All rights reserved.
//
#import "User.h"
@implementation User
@dynamic name;
@dynamic age;
@dynamic headImage;
@end
// Address.h
// CoreDataDemo
//
// Created by gaokunpeng on 15/2/4.
// Copyright (c) 2015 qianfeng. All rights reserved.
//
#import <Foundation/Foundation.h>
#import <CoreData/CoreData.h>
@interface Address : NSManagedObject
@end
// Address.m
// CoreDataDemo
//
// Created by gaokunpeng on 15/2/4.
// Copyright (c) 2015 qianfeng. All rights reserved.
//
#import "Address.h"
@implementation Address
@end
//
// DBManager.h
// CoreDataDemo
//
// Created by gaokunpeng on 15/2/4.
// Copyright (c) 2015 qianfeng. All rights reserved.
//
#import <Foundation/Foundation.h>
#import "User.h"
@interface DBManager : NSObject
//
+ (DBManager *)sharedManager;
//
- (void)insertUser:(NSDictionary *)userDict;
//
- (NSArray *)searchAllUsers;
//
- (void)updateUserWithName:(NSString *)name dict:(NSDictionary *)userDict;
//
- (void)deleteUser:(User *)user;
@end
//
// DBManager.m
// CoreDataDemo
//
// Created by gaokunpeng on 15/2/4.
// Copyright (c) 2015 qianfeng. All rights reserved.
//
#import "DBManager.h"
#import <CoreData/CoreData.h>
@implementation DBManager
{
NSManagedObjectContext *_dbContext;
}
+(DBManager *)sharedManager
{
static DBManager *manager = nil;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
manager = [[DBManager alloc] init];
});
return manager;
}
-(instancetype)init
{
self = [super init];
if (self) {
// coreData
[self createContext];
}
return self;
}
- (NSManagedObjectModel *)createModel
{
NSString *path = [[NSBundle mainBundle] pathForResource:@"MyUser" ofType:@"momd"];
NSURL *url = [NSURL fileURLWithPath:path];
NSManagedObjectModel *model = [[NSManagedObjectModel alloc] initWithContentsOfURL:url];
return model;
}
- (NSPersistentStoreCoordinator *)createCoordinateWithModel:(NSManagedObjectModel *)model
{
NSPersistentStoreCoordinator *coor = [[NSPersistentStoreCoordinator alloc] initWithManagedObjectModel:model];
return coor;
}
- (void)addStore:(NSPersistentStoreCoordinator *)coor
{
// : (sqlite、xml、binary)
// :nil
// :sqlite
// :nil
// :
NSString *path = [NSHomeDirectory() stringByAppendingPathComponent:@"Documents/user.sqlite"];
NSLog(@"path:%@",path);
NSURL *url = [NSURL fileURLWithPath:path];
NSError *error;
NSPersistentStore *store = [coor addPersistentStoreWithType:NSSQLiteStoreType configuration:nil URL:url options:nil error:&error];
if (error) {
NSLog(@"error:%@",error.localizedDescription);
}
}
- (void)createContext
{
//1.NSManagedObjectModel
NSManagedObjectModel *model = [self createModel];
//2.NSPersistentStoreCoordinator
NSPersistentStoreCoordinator *coor = [self createCoordinateWithModel:model];
//3.NSPersistentStore
[self addStore:coor];
//4.NSManagedObjectContext
_dbContext = [[NSManagedObjectContext alloc] init];
_dbContext.persistentStoreCoordinator = coor;
}
-(void)insertUser:(NSDictionary *)userDict
{
// :
User *newUser = [NSEntityDescription insertNewObjectForEntityForName:@"User" inManagedObjectContext:_dbContext];
// newUser
if ([userDict objectForKey:@"name"]) {
newUser.name = userDict[@"name"];
}
if (userDict[@"age"]) {
newUser.age = userDict[@"age"];
}
if (userDict[@"headImage"]) {
newUser.headImage = userDict[@"headImage"];
}
//
NSError *error;
[_dbContext save:&error];
if (error) {
NSLog(@"%@",error.localizedDescription);
}
}
//
- (NSArray *)searchAllUsers
{
NSEntityDescription *desc = [NSEntityDescription entityForName:@"User" inManagedObjectContext:_dbContext];
NSFetchRequest *request = [[NSFetchRequest alloc] init];
request.entity = desc;
//
NSError *error;
NSArray *userArray = [_dbContext executeFetchRequest:request error:&error];
if (error) {
NSLog(@"%@",error.localizedDescription);
}
return userArray;
}
//
- (void)updateUserWithName:(NSString *)name dict:(NSDictionary *)userDict
{
//
NSFetchRequest *request = [[NSFetchRequest alloc] init];
NSEntityDescription *desc = [NSEntityDescription entityForName:@"User" inManagedObjectContext:_dbContext];
request.entity = desc;
//
//
NSPredicate *predict = [NSPredicate predicateWithFormat:@"name == %@",name];
request.predicate = predict;
NSError *error;
NSArray *userArray = [_dbContext executeFetchRequest:request error:&error];
if (error) {
NSLog(@"%@",error);
}
//
for (User *tmpUser in userArray) {
if (userDict[@"name"]) {
tmpUser.name = userDict[@"name"];
}
if (userDict[@"age"]) {
tmpUser.age = userDict[@"age"];
}
if (userDict[@"headImage"]) {
tmpUser.headImage = userDict[@"headImage"];
}
}
//
NSError *updateError;
[_dbContext save:&updateError];
if (updateError) {
NSLog(@"updateError:%@",updateError.localizedDescription);
}
}
//
- (void)deleteUser:(User *)user
{
[_dbContext deleteObject:user];
//
NSError *error;
[_dbContext save:&error];
if (error) {
NSLog(@"%@",error.localizedDescription);
}
}
@end
// DetailViewController.h
// CoreDataDemo
//
// Created by gaokunpeng on 15/2/4.
// Copyright (c) 2015 qianfeng. All rights reserved.
//
#import <UIKit/UIKit.h>
#import "User.h"
@interface DetailViewController : UIViewController
//
@property (nonatomic,strong)User *user;
@end
//
// DetailViewController.m
// CoreDataDemo
//
// Created by gaokunpeng on 15/2/4.
// Copyright (c) 2015 qianfeng. All rights reserved.
//
#import "DetailViewController.h"
#import "DBManager.h"
@interface DetailViewController ()<UIImagePickerControllerDelegate,UINavigationControllerDelegate>
@end
@implementation DetailViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view.
self.view.backgroundColor = [UIColor whiteColor];
//
UIBarButtonItem *rightItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemDone target:self action:@selector(saveAction:)];
self.navigationItem.rightBarButtonItem = rightItem;
//
//
UILabel *nameLabel = [self createLabelFrame:CGRectMake(30, 100, 60, 40) text:@" :"];
UITextField *nameTextField = [self createTextField:CGRectMake(110, 100, 200, 40) placeHolder:@" "];
nameTextField.tag = 100;
[self.view addSubview:nameLabel];
[self.view addSubview:nameTextField];
//
UILabel *ageLabel = [self createLabelFrame:CGRectMake(30, 160, 60, 40) text:@" :"];
UITextField *ageTextField = [self createTextField:CGRectMake(110, 160, 200, 40) placeHolder:@" "];
ageTextField.tag = 200;
[self.view addSubview:ageLabel];
[self.view addSubview:ageTextField];
//
UILabel *imageLabel = [self createLabelFrame:CGRectMake(30, 220, 60, 40) text:@" :"];
UIButton *imageBtn = [UIButton buttonWithType:UIButtonTypeCustom];
imageBtn.frame = CGRectMake(110, 220, 200, 200);
[imageBtn addTarget:self action:@selector(chooseImage:) forControlEvents:UIControlEventTouchUpInside];
imageBtn.tag = 300;
[self.view addSubview:imageLabel];
[self.view addSubview:imageBtn];
//
if (self.user) {
nameTextField.text = self.user.name;
ageTextField.text = [NSString stringWithFormat:@"%@",self.user.age];
[imageBtn setBackgroundImage:[UIImage imageWithData:self.user.headImage] forState:UIControlStateNormal];
}
}
- (void)chooseImage:(id)sender
{
//
UIImagePickerController *ctrl = [[UIImagePickerController alloc] init];
ctrl.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;
ctrl.delegate = self;
[self presentViewController:ctrl animated:YES completion:nil];
}
#pragma mark - UIImagePickerController
-(void)imagePickerControllerDidCancel:(UIImagePickerController *)picker
{
[picker dismissViewControllerAnimated:YES completion:nil];
}
-(void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info
{
UIImage *image = info[UIImagePickerControllerOriginalImage];
//
UIButton *imageBtn = (UIButton *)[self.view viewWithTag:300];
[imageBtn setBackgroundImage:image forState:UIControlStateNormal];
[picker dismissViewControllerAnimated:YES completion:nil];
}
// label
- (UILabel *)createLabelFrame:(CGRect)frame text:(NSString *)text
{
UILabel *label = [[UILabel alloc] initWithFrame:frame];
label.text = text;
return label;
}
// textField
- (UITextField *)createTextField:(CGRect)frame placeHolder:(NSString *)placeHolder
{
UITextField *textField = [[UITextField alloc] initWithFrame:frame];
textField.borderStyle = UITextBorderStyleRoundedRect;
textField.placeholder = placeHolder;
return textField;
}
//
- (void)saveAction:(id)sender
{
UITextField *nameTextField = (UITextField *)[self.view viewWithTag:100];
UITextField *ageTextField = (UITextField *)[self.view viewWithTag:200];
UIButton *imageBtn = (UIButton *)[self.view viewWithTag:300];
//
NSMutableDictionary *userDict = [NSMutableDictionary dictionary];
if (nameTextField.text.length > 0) {
[userDict setObject:nameTextField.text forKey:@"name"];
}
if (ageTextField.text.length > 0) {
NSNumber *age = [NSNumber numberWithInt:[ageTextField.text intValue]];
[userDict setObject:age forKey:@"age"];
}
UIImage *image = [imageBtn backgroundImageForState:UIControlStateNormal];
NSData *data = UIImagePNGRepresentation(image);
if (data.length > 0) {
[userDict setObject:data forKey:@"headImage"];
}
if (self.user) {
//
[[DBManager sharedManager] updateUserWithName:self.user.name dict:userDict];
}else{
//
[[DBManager sharedManager] insertUser:userDict];
}
[self.navigationController popViewControllerAnimated:YES];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
/*
#pragma mark - Navigation
// In a storyboard-based application, you will often want to do a little preparation before navigation
- (void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender {
// Get the new view controller using [segue destinationViewController].
// Pass the selected object to the new view controller.
}
*/
@end
// ViewController.h
// CoreDataDemo
//
// Created by gaokunpeng on 15/2/4.
// Copyright (c) 2015 qianfeng. All rights reserved.
//
#import <UIKit/UIKit.h>
@interface ViewController : UIViewController
@end
//
// ViewController.m
// CoreDataDemo
//
// Created by gaokunpeng on 15/2/4.
// Copyright (c) 2015 qianfeng. All rights reserved.
//
#import "ViewController.h"
#import "DetailViewController.h"
#import "DBManager.h"
@interface ViewController ()<UITableViewDataSource,UITableViewDelegate>
{
NSMutableArray *_dataArray;
UITableView *_tbView;
}
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
//
_dataArray = [NSMutableArray array];
//
self.automaticallyAdjustsScrollViewInsets = NO;
_tbView = [[UITableView alloc] initWithFrame:CGRectMake(0, 64, 375, 667-64) style:UITableViewStylePlain];
_tbView.delegate = self;
_tbView.dataSource = self;
[self.view addSubview:_tbView];
//
UIBarButtonItem *rightItem = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAdd target:self action:@selector(myAddAction:)];
self.navigationItem.rightBarButtonItem = rightItem;
self.view.backgroundColor = [UIColor whiteColor];
}
- (void)myAddAction:(id)sender
{
DetailViewController *dvc = [[DetailViewController alloc] init];
[self.navigationController pushViewController:dvc animated:YES];
}
- (void)searchUsersFromCoreData
{
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
NSArray *userArray = [[DBManager sharedManager] searchAllUsers];
if (userArray.count > 0) {
_dataArray = [NSMutableArray arrayWithArray:userArray];
}
//
dispatch_async(dispatch_get_main_queue(), ^{
[_tbView reloadData];
});
});
}
-(void)viewDidAppear:(BOOL)animated
{
[super viewDidAppear:animated];
[self searchUsersFromCoreData];
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
#pragma mark - UITableView
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
return _dataArray.count;
}
- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *cellId = @"cellID";
UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellId];
if (nil == cell) {
cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellId];
}
//
User *user = _dataArray[indexPath.row];
cell.imageView.image = [UIImage imageWithData:user.headImage];
cell.textLabel.text = user.name;
cell.detailTextLabel.text = [NSString stringWithFormat:@" :%@",user.age];
return cell;
}
- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath
{
DetailViewController *dvc = [[DetailViewController alloc] init];
dvc.user = _dataArray[indexPath.row];
[self.navigationController pushViewController:dvc animated:YES];
}
- (void)tableView:(UITableView *)tableView commitEditingStyle:(UITableViewCellEditingStyle)editingStyle forRowAtIndexPath:(NSIndexPath *)indexPath
{
if (editingStyle == UITableViewCellEditingStyleDelete) {
//
User *user = _dataArray[indexPath.row];
[[DBManager sharedManager] deleteUser:user];
[_dataArray removeObjectAtIndex:indexPath.row];
[tableView deleteRowsAtIndexPaths:@[indexPath] withRowAnimation:UITableViewRowAnimationAutomatic];
}
}
@end
// AppDelegate.m
// CoreDataDemo
//
// Created by gaokunpeng on 15/2/4.
// Copyright (c) 2015 qianfeng. All rights reserved.
//
#import "AppDelegate.h"
#import "ViewController.h"
@interface AppDelegate ()
@end
@implementation AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
// Override point for customization after application launch.
//
ViewController *vCtrl = [[ViewController alloc] init];
UINavigationController *navCtrl = [[UINavigationController alloc] initWithRootViewController:vCtrl];
self.window.rootViewController = navCtrl;
return YES;
}
이 내용에 흥미가 있습니까?
현재 기사가 여러분의 문제를 해결하지 못하는 경우 AI 엔진은 머신러닝 분석(스마트 모델이 방금 만들어져 부정확한 경우가 있을 수 있음)을 통해 가장 유사한 기사를 추천합니다:
핵심 데이터 모델을 업데이트합니다.아, 아니오.개인적으로 좋아해요.그것은 간단한 지구층으로 도형 모델링과 관계 해석을 가지고 있다.현재NSPersistentContainer API는 몇 줄의 코드만으로 가능합니다.자신도 좋아한다고 분명히 밝힌 이 팀은 해마다 새...
텍스트를 자유롭게 공유하거나 복사할 수 있습니다.하지만 이 문서의 URL은 참조 URL로 남겨 두십시오.
CC BY-SA 2.5, CC BY-SA 3.0 및 CC BY-SA 4.0에 따라 라이센스가 부여됩니다.
좋은 웹페이지 즐겨찾기
