图片序列化和反序列化成图片文件（代码）

//
//  ViewController.m
//  图片序列化和反序列化
//
//  Created by Qlinchao on 17/3/14.
//  Copyright © 2017年 QLC. All rights reserved.
//

#import "ViewController.h"@interface ViewController ()
@property (weak, nonatomic) IBOutlet UIImageView *imageView;@end@implementation ViewController- (void)viewDidLoad {[super viewDidLoad];NSArray *dirArray = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);NSString *path = [dirArray firstObject];path = [path stringByAppendingPathComponent:@"imageTest.jpg"];UIImage *image = [UIImage imageNamed:@"login_register_background.png"];NSData *imageData = UIImageJPEGRepresentation(image, 1.0);BOOL isWrite = [imageData writeToFile:path atomically:YES];if (isWrite) {NSLog(@"写入成功");} else {NSLog(@"写入失败");}}-(void)touchesBegan:(NSSet<UITouch *> *)touches withEvent:(UIEvent *)event{[self readFile];
}
-(void)readFile{NSArray *dirArray = NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES);NSString *path = [dirArray firstObject];path = [path stringByAppendingPathComponent:@"imageTest.jpg"];NSLog(@"%@",path);if([[NSFileManager defaultManager] fileExistsAtPath:path]){NSData *picData = [NSData dataWithContentsOfFile:path];self.imageView.image = [UIImage imageWithData:picData];}
}@end