0
在我的應用程序中，我從url下載圖像並保存到應用程序文檔目錄中。現在我想將這些下載的圖像顯示爲圖像庫。對於我使用fGallery圖片庫，我可以配置它，併成功推動其導航控制器和fGallery觀點也是可見的，但它沒有顯示我的圖片，我提供fGalley與圖像陣列這樣需要關於以圖庫的形式下載圖像的幫助
頭文件
@interface myController <FGalleryViewControllerDelegate>
@property (strong, nonatomic) FGalleryViewController *localGallery;
@property (strong, nonatomic) NSMutableArray *localImages;
類文件
//These are delegate methods of FGalleryViewControllerDelegate
- (NSString*)photoGallery:(FGalleryViewController*)gallery filePathForPhotoSize:(FGalleryPhotoSize)size atIndex:(NSUInteger)index
{
return [localImages objectAtIndex:index];
}
- (NSString*)photoGallery:(FGalleryViewController *)gallery urlForPhotoSize:(FGalleryPhotoSize)size atIndex:(NSUInteger)index
{
return [localImages objectAtIndex:index];
}
- (int)numberOfPhotosForPhotoGallery:(FGalleryViewController *)gallery
{
int num;
num = [localImages count];
return num;
}
- (FGalleryPhotoSourceType)photoGallery:(FGalleryViewController *)gallery sourceTypeForPhotoAtIndex:(NSUInteger)index
{
return FGalleryPhotoSourceTypeLocal;
}
//Delegate method ends here
// My method to show gallery with my images
-(void)ShowGallery
{
localImages = [[NSMutableArray alloc]init];
NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
NSString *documentsDir = [paths objectAtIndex:0];
NSString *dataPath = [documentsDir stringByAppendingPathComponent:chatWithUser;
NSString *msgsColumn;
//database query to fetch all images name and then
while([results next])
{
msgsColumn = [results stringForColumn:@"msgs"];
if([[[msgsColumn componentsSeparatedByString:@"."]objectAtIndex:1]isEqualToString:@"jpg"])
{
[localImages addObject:[dataPath stringByAppendingPathComponent:msgsColumn]];
}
}
[database close];
localGallery = [[FGalleryViewController alloc]initWithPhotoSource:self];
[self.navigationController pushViewController:localGallery animated:YES];
}
對於圖像路徑我用STR ingByAppendingPathComponent但我也試過stringByAppendingString指導圖像駐留在文檔目錄中，但沒有任何工作。
請幫助我弄清楚發生了什麼問題。