【代碼筆記】iOS-archive儲存圖片到本地，

【代碼筆記】iOS-archive儲存圖片到本地，

一，工程圖：

二，代碼：

RootViewController.h

#import <UIKit/UIKit.h>@interface RootViewController : UIViewController{    UIImageView *imageView;}@end

 

RootViewController.m

#import "RootViewController.h"@interface RootViewController ()@end@implementation RootViewController- (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil{    self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];    if (self) {        // Custom initialization    }    return self;}- (void)viewDidLoad{    [super viewDidLoad];    // Do any additional setup after loading the view.        //初始化背景圖    imageView=[[UIImageView alloc]initWithFrame:CGRectMake(100, 100, 100, 100)];    imageView.backgroundColor=[UIColor redColor];    [self.view addSubview:imageView];        //將圖片儲存    [self archive];        //提取儲存在本地的圖片    [self unarchive];    }#pragma -mark -functions//歸檔-(void)archive{    NSData *data=[NSKeyedArchiver archivedDataWithRootObject:[UIImage imageNamed:@"1.jpg"]];    NSUserDefaults *imageDefault = [NSUserDefaults standardUserDefaults];    [imageDefault setObject:data forKey:@"image"];    [imageDefault synchronize];}//反歸檔-(void)unarchive{    NSData* data = [[NSUserDefaults standardUserDefaults]objectForKey:@"image"];    id image= [NSKeyedUnarchiver unarchiveObjectWithData:data];    imageView.image=image;    }