[iOS] Objective-c save/load image under APP document

Objective-c save/load image under APP document

Save image: 

   [self saveImageInDocumenet:Image withName:@"blue"];

Load image with name: 

   UIImage *image = [self loadImageFromDocumentWithName:@"blue"];

- (void)saveImageInDocumenet:(UIImage *)image withName:(NSString *)name {

    

    if (image != nil) {

        

        NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,

                                                             NSUserDomainMask, YES);

        NSString *documentsDirectory = [paths objectAtIndex:0];

        NSString* path = [documentsDirectory stringByAppendingPathComponent:name];

        NSData* data = UIImagePNGRepresentation(image);

        [data writeToFile:path atomically:YES];

    }

}

- (UIImage*)loadImageFromDocumentWithName:(NSString *)name {

    

    NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,

                                                         NSUserDomainMask, YES);

    NSString *documentsDirectory = [paths objectAtIndex:0];

    NSString* path = [documentsDirectory stringByAppendingPathComponent: name];

    UIImage* image = [UIImage imageWithContentsOfFile:path];

    

    return image;

}