В моя проект използвам WSAssetPickerController.
Въпреки че лентата с инструменти не работи (не е голям проблем), всичко работи добре.
Добавих бутон за споделяне в контролера за изглед, но изглежда не мога да накарам UIDocumentInteractionController да бъде извикан, опитах се да копирам същия метод, който използвам за файлове, запазени в папката с приложения (което работи добре). Но тук не е така.
Как работи страницата за неподходящи изтегляния:
NSString *fileName = [directoryContents objectAtIndex:indexPath.row];
NSString *path;
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
path = [[paths objectAtIndex:0] stringByAppendingPathComponent:@"Downloads"];
path = [path stringByAppendingPathComponent:fileName];
documentController = [[UIDocumentInteractionController alloc] init];
documentController = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:path]];
[documentController setDelegate:self];
[documentController presentOpenInMenuFromRect:CGRectZero inView:self.view animated:YES];
Как се зареждат изображенията:
#pragma mark - Fetching Code
- (void)fetchAssets
{
// TODO: Listen to ALAssetsLibrary changes in order to update the library if it changes.
// (e.g. if user closes, opens Photos and deletes/takes a photo, we'll get out of range/other error when they come back.
// IDEA: Perhaps the best solution, since this is a modal controller, is to close the modal controller.
dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
[self.assetsGroup enumerateAssetsWithOptions:NSEnumerationReverse usingBlock:^(ALAsset *result, NSUInteger index, BOOL *stop) {
if (!result || index == NSNotFound) {
dispatch_async(dispatch_get_main_queue(), ^{
[self.tableView reloadData];
self.navigationItem.title = [NSString stringWithFormat:@"%@", [self.assetsGroup valueForProperty:ALAssetsGroupPropertyName]];
});
return;
}
WSAssetWrapper *assetWrapper = [[WSAssetWrapper alloc] initWithAsset:result];
dispatch_async(dispatch_get_main_queue(), ^{
[self.fetchedAssets addObject:assetWrapper];
});
}];
});
[self.tableView performSelector:@selector(reloadData) withObject:nil afterDelay:0.5];
}
Как зареждам и извиквам бутона:
- (void)viewDidLoad
{
self.navigationItem.title = @"Loading";
UIBarButtonItem *shareButton = [[UIBarButtonItem alloc]
initWithBarButtonSystemItem:UIBarButtonSystemItemAction
target:self
action:@selector(shareAction:)];
self.navigationItem.rightBarButtonItem = shareButton;
self.navigationItem.rightBarButtonItem.enabled = NO;
// TableView configuration.
self.tableView.contentInset = TABLEVIEW_INSETS;
self.tableView.separatorColor = [UIColor clearColor];
self.tableView.allowsSelection = NO;
// Fetch the assets.
[self fetchAssets];
}
Трябваше и избра извлечени активи
#pragma mark - WSAssetsTableViewCellDelegate Methods
- (BOOL)assetsTableViewCell:(WSAssetsTableViewCell *)cell shouldSelectAssetAtColumn:(NSUInteger)column
{
BOOL shouldSelectAsset = (self.assetPickerState.selectionLimit == 0 ||
(self.assetPickerState.selectedCount < self.assetPickerState.selectionLimit));
NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];
NSUInteger assetIndex = indexPath.row * self.assetsPerRow + column;
WSAssetWrapper *assetWrapper = [self.fetchedAssets objectAtIndex:assetIndex];
if ((shouldSelectAsset == NO) && (assetWrapper.isSelected == NO))
self.assetPickerState.state = WSAssetPickerStateSelectionLimitReached;
else
self.assetPickerState.state = WSAssetPickerStatePickingAssets;
return shouldSelectAsset;
}
- (void)assetsTableViewCell:(WSAssetsTableViewCell *)cell didSelectAsset:(BOOL)selected atColumn:(NSUInteger)column
{
NSIndexPath *indexPath = [self.tableView indexPathForCell:cell];
// Calculate the index of the corresponding asset.
NSUInteger assetIndex = indexPath.row * self.assetsPerRow + column;
WSAssetWrapper *assetWrapper = [self.fetchedAssets objectAtIndex:assetIndex];
assetWrapper.selected = selected;
// Update the state object's selectedAssets.
[self.assetPickerState changeSelectionState:selected forAsset:assetWrapper.asset];
// Update navigation bar with selected count and limit variables
dispatch_async(dispatch_get_main_queue(), ^{
if (self.assetPickerState.selectionLimit) {
self.navigationItem.title = [NSString stringWithFormat:@"%@ (%lu/%ld)", [self.assetsGroup valueForProperty:ALAssetsGroupPropertyName], (unsigned long)self.assetPickerState.selectedCount, (long)self.assetPickerState.selectionLimit];
}
});
if (self.assetPickerState.selectedCount == 0) {
self.navigationItem.rightBarButtonItem.enabled = NO;
}
else {
self.navigationItem.rightBarButtonItem.enabled = YES;
}
}
Необходима е работа по-долу с пример от кода за изтегляне, който използвах преди.
-(void)shareAction:(id)sender {
//Launch UIDocumentInteractionController for selected images
documentController =[[UIDocumentInteractionController alloc]init];
documentController = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath://Code needed here??//]];
documentController.delegate=self;
[documentController presentOpenInMenuFromRect:CGRectZero inView:self.view animated:YES];
}
Каква би била най-добрата практика за това?
Благодаря.
АКТУАЛИЗАЦИЯ 8/4:
-(void)shareAction:(id)sender {
//Launch UIDocumentInteractionController for selected images
if (self.assetPickerState.selectedCount >= 1) {
documentController = [[UIDocumentInteractionController alloc] init];
documentController = [UIDocumentInteractionController interactionControllerWithURL:[NSURL fileURLWithPath:@"public.image"]];
[documentController setDelegate:self];
[documentController presentOptionsMenuFromRect:CGRectZero inView:self.view animated:YES];
}
}
Returns: Unable to get data for URL: The operation couldn’t be completed. (Cocoa error 260.)
