Don't have the pictures from directory on CollectionView - ios

Question

I would want to show all the pictures in my directory however I am creating Folders in the Directory so that I can sort the pictures. I want to show all of the pictures in several folders. I am using the code
- (void)viewDidLoad
{
[super viewDidLoad];
// Do any additional setup after loading the view.
allImagesArray = [[NSMutableArray alloc] init];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDirectory = [paths objectAtIndex:0];
NSString *location=#"Bottoms"#"Top"#"Right"#"Left"#"Down"#"Up";
NSString *fPath = [documentsDirectory stringByAppendingPathComponent:location];
NSArray *directoryContent = [[NSFileManager defaultManager] directoryContentsAtPath: fPath];
collectionTrash.delegate =self;
collectionTrash.dataSource=self;
for(NSString *str in directoryContent){
NSLog(#"i");
NSString *finalFilePath = [fPath stringByAppendingPathComponent:str];
NSData *data = [NSData dataWithContentsOfFile:finalFilePath];
if(data)
{
UIImage *image = [UIImage imageWithData:data];
[allImagesArray addObject:image];
NSLog(#"array:%#",[allImagesArray description]);
}}}
- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView
{
NSLog(#"j");
return 1;
}
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return [allImagesArray count];
}
-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
static NSString *reuseID = #"ReuseID";
TrashCell *mycell = (TrashCell *) [collectionView dequeueReusableCellWithReuseIdentifier:reuseID forIndexPath:indexPath];
UIImageView *imageInCell = (UIImageView*)[mycell viewWithTag:1];
imageInCell.image = [allImagesArray objectAtIndex:indexPath.row];
NSLog(#"a");
return mycell;
}
If you see my code you can notice that I have put NSLOG i and j. The j comes up but the i does not.... Is my way wrong showing all the pictures that are in several folders? I do not have any error.

Answer 1

If you have multiple folders then you need to iterate over the folders and then the folder contents to process all of it.
While this line:
NSString *location=#"Bottoms"#"Top"#"Right"#"Left"#"Down"#"Up";
Is technically legal, I guess you're thinking it will do some array / iteration thing for you. It won't. It just concatenates all of the strings together. You probably want something more like:
NSArray *locations = #[ #"Bottoms", #"Top", #"Right", #"Left", #"Down", #"Up" ];
Then you can run a loop over the folders and then the contents:
for(NSString *folder in locations) {
// get the folder contents
for(NSString *file in directoryContent) {
// load the image
}
}