我使用 Anypic 开源将使用该应用拍摄的照片保存到应用内供稿。我想将其转换为保存视频而不是照片。我将如何去做这件事。这是我用来保存照片的代码-
- (BOOL)shouldUploadImage:(UIImage *)anImage {
// Resize the image to be square (what is shown in the preview)
UIImage *resizedImage = [anImage resizedImageWithContentMode:UIViewContentModeScaleAspectFit
bounds:CGSizeMake(560.0f, 560.0f)
interpolationQuality:kCGInterpolationHigh];
// Create a thumbnail and add a corner radius for use in table views
UIImage *thumbnailImage = [anImage thumbnailImage:86.0f
transparentBorder:0.0f
cornerRadius:10.0f
interpolationQuality:kCGInterpolationDefault];
// Get an NSData representation of our images. We use JPEG for the larger image
// for better compression and PNG for the thumbnail to keep the corner radius transparency
NSData *imageData = UIImageJPEGRepresentation(resizedImage, 0.8f);
NSData *thumbnailImageData = UIImageJPEGRepresentation(thumbnailImage, 0.8f);
if (!imageData || !thumbnailImageData) {
return NO;
}
// Create the PFFiles and store them in properties since we'll need them later
self.photoFile = [PFFile fileWithData:imageData];
self.thumbnailFile = [PFFile fileWithData:thumbnailImageData];
// Save the files
[self.photoFile saveInBackground];
[self.thumbnailFile saveInBackground];
}
- (void)doneButtonAction:(id)sender {
NSDictionary *userInfo = [NSDictionary dictionary];
NSString *trimmedComment = [self.commentTextField.text stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];
if (trimmedComment.length != 0) {
userInfo = [NSDictionary dictionaryWithObjectsAndKeys:
trimmedComment,kPAPEditPhotoViewControllerUserInfoCommentKey,
nil];
}
if (!self.photoFile || !self.thumbnailFile) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Couldn't post your photo" message:nil delegate:nil cancelButtonTitle:nil otherButtonTitles:@"Dismiss", nil];
[alert show];
return;
}
// both files have finished uploading
// create a photo object
PFObject *photo = [PFObject objectWithClassName:kPAPPhotoClassKey];
[photo setObject:[PFUser currentUser] forKey:kPAPPhotoUserKey];
[photo setObject:self.photoFile forKey:kPAPPhotoPictureKey];
[photo setObject:self.thumbnailFile forKey:kPAPPhotoThumbnailKey];
// photos are public, but may only be modified by the user who uploaded them
PFACL *photoACL = [PFACL ACLWithUser:[PFUser currentUser]];
[photoACL setPublicReadAccess:YES];
photo.ACL = photoACL;
// Request a background execution task to allow us to finish uploading the photo even if the app is backgrounded
self.photoPostBackgroundTaskId = [[UIApplication sharedApplication] beginBackgroundTaskWithExpirationHandler:^{
[[UIApplication sharedApplication] endBackgroundTask:self.photoPostBackgroundTaskId];
}];
// save
[photo saveInBackgroundWithBlock:^(BOOL succeeded, NSError *error) {
if (succeeded) {
NSLog(@"Photo uploaded");
[[PAPCache sharedCache] setAttributesForPhoto:photo likers:[NSArray array] commenters:[NSArray array] likedByCurrentUser:NO];
// userInfo might contain any caption which might have been posted by the uploader
if (userInfo) {
NSString *commentText = [userInfo objectForKey:kPAPEditPhotoViewControllerUserInfoCommentKey];
if (commentText && commentText.length != 0) {
// create and save photo caption
PFObject *comment = [PFObject objectWithClassName:kPAPActivityClassKey];
[comment setObject:kPAPActivityTypeComment forKey:kPAPActivityTypeKey];
[comment setObject:photo forKey:kPAPActivityPhotoKey];
[comment setObject:[PFUser currentUser] forKey:kPAPActivityFromUserKey];
[comment setObject:[PFUser currentUser] forKey:kPAPActivityToUserKey];
[comment setObject:commentText forKey:kPAPActivityContentKey];
PFACL *ACL = [PFACL ACLWithUser:[PFUser currentUser]];
[ACL setPublicReadAccess:YES];
comment.ACL = ACL;
[comment saveEventually];
[[PAPCache sharedCache] incrementCommentCountForPhoto:photo];
}
}
[[NSNotificationCenter defaultCenter] postNotificationName:PAPTabBarControllerDidFinishEditingPhotoNotification object:photo];
} else {
NSLog(@"Photo failed to save: %@", error);
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Couldn't post your photo" message:nil delegate:nil cancelButtonTitle:nil otherButtonTitles:@"Dismiss", nil];
[alert show];
}
[[UIApplication sharedApplication] endBackgroundTask:self.photoPostBackgroundTaskId];
}];
[self.parentViewController dismissModalViewControllerAnimated:YES];
}