保存图片/视频到相册保存完成后通知事件 IOS

最新推荐文章于 2024-04-24 13:35:47 发布

andy_jiangbin

最新推荐文章于 2024-04-24 13:35:47 发布

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本文详细介绍了如何使用iOS平台上的UIKit框架将图片和视频存储到相册中，并提供了相应的通知机制和保存操作函数。通过实现这些功能，开发者能够确保用户在进行图片和视频分享时的操作体验得到提升。

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// 官方提供的说明
//  - (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo;
UIKIT_EXTERN void UIImageWriteToSavedPhotosAlbum(UIImage *image, id completionTarget, SEL completionSelector, void *contextInfo);
//  - (void)video:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo;
UIKIT_EXTERN void UISaveVideoAtPathToSavedPhotosAlbum(NSString *videoPath, id completionTarget, SEL completionSelector, void *contextInfo) __OSX_AVAILABLE_STARTING(__MAC_NA,__IPHONE_3_1);

---------------------------------------------------------------------------

#pragma mark -
#pragma mark - 存储图片或视频到相册的通知
@protocol SavedToPhotosAlbumDelegate

@optional

- (void)imageSavedToPhotosAlbum:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *) contextInfo;
- (void)videoSavedToPhotosAlbum:(NSString *)videoPath didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo;

@end

---------------------------------------------------------------------------
// 调用保存的时候直接调用这个
UIImageWriteToSavedPhotosAlbum(image, self, @selector(imageSavedToPhotosAlbum:didFinishSavingWithError:contextInfo:), nil);

// 保存图片到相册
+ (void) writeImageToPhotosAlbumByImage:(UIImage *) v_image andCompletionTarget:(id) v_target andCompletionSelector:(SEL) v_selector andContextInfo:(void*) v_context {
    UIImageWriteToSavedPhotosAlbum(v_image, v_target, @selector(imageSavedToPhotosAlbum:didFinishSavingWithError:contextInfo:), v_context);
}
// 保存视频到相册
+ (void) writeVideoToPhotosAlbumByVideoPath:(NSString *) v_strVideoPath andCompletionTarget:(id) v_target andCompletionSelector:(SEL) v_selector andContextInfo:(void*) v_context {
    UISaveVideoAtPathToSavedPhotosAlbum(v_strVideoPath, v_target, @selector(videoSavedToPhotosAlbum:didFinishSavingWithError:contextInfo:), v_context);
}
---------------------------------------------------------------------------
// 图片存放到相册后的通知
- (void)imageSavedToPhotosAlbum:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *) contextInfo {
    NSString *message;
    NSString *title;
    if (!error) {
        title = @"Success";
        message = @"Save album success!";
    } else {
        title = @"Failure";
#if DEBUG_MODE
        message = [error description];
#else
        message = @"Failed to save the album!";
#endif
    }
    UIAlertView *alert = [[UIAlertView alloc] initWithTitle:title
                                                    message:message
                                                   delegate:nil
                                          cancelButtonTitle:@"OK"
                                          otherButtonTitles:nil];
    [alert show];
    [alert release];
}