iOS 图片存到沙盒

标签：沙盒   ios   图片   imageview   多线程   

- (void)viewDidLoad {

    [super viewDidLoad];

    //初始化一个加载图片的试图

    imageview=[[UIImageView alloc]initWithFrame:CGRectMake(0, 50, self.view.frame.size.width, self.view.frame.size.height-100)];

    [self.view addSubview:imageview];

    //多线程

    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{

        NSURL * url = [NSURL URLWithString:kURL];

        NSData * data = [[NSData alloc]initWithContentsOfURL:url];

        image = [[UIImage alloc]initWithData:data];

        if (data != nil) {

            dispatch_async(dispatch_get_main_queue(), ^{

                imageview.image = image;

                NSFileManager *fileManager = [NSFileManager defaultManager];

                NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask, YES);

                NSString *documentsDirectory = [paths objectAtIndex:0];

                 NSString *myDirectory = [documentsDirectory stringByAppendingPathComponent:@"test"];

                NSString *filePath = [myDirectory stringByAppendingPathComponent:[NSString stringWithFormat:@"pic_%@.png", image]];

                NSLog(@"documentsDirectory%@",filePath);

                 [UIImagePNGRepresentation(image)writeToFile:filePath  atomically:YES];

                [fileManager createDirectoryAtPath:myDirectory withIntermediateDirectories:YES attributes:nil error:nil];

//                NSData *data=[[NSData alloc]init];

//                data=[NSKeyedArchiver archivedDataWithRootObject:filePath];

//                [data writeToFile:myDirectory atomically:YES];

                [self thepictures];

            });

        }  

    });

}

//取出沙盒的图片

-(void)thepictures

{

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);

    NSString *documentsDirectory = [paths objectAtIndex:0];

    NSLog(@"documentsDirectory%@",documentsDirectory);

    NSFileManager *fileManage = [NSFileManager defaultManager];

    NSString *myDirectory = [documentsDirectory stringByAppendingPathComponent:@"test"];

    NSArray *file = [fileManage subpathsOfDirectoryAtPath: myDirectory error:nil];

    NSLog(@"%@",file);

    NSArray *files = [fileManage subpathsAtPath: myDirectory ];

    NSLog(@"%@",files);

}

iOS 图片存到沙盒

标签：沙盒   ios   图片   imageview   多线程   

原文地址：http://blog.csdn.net/yangchen9931/article/details/44903301