Remove All Images from Document Directory

-(void)removeImagesFromDocumentDic{

    /* dir: the directory where your files are */

    NSFileManager *fm = [NSFileManager defaultManager];

    NSError *error = nil;

    NSString *docDirPath  =   [NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0];

    NSArray *items = [fm contentsOfDirectoryAtPath:docDirPath error:&error];

    if (error) { /* ... */ }

    

    /* delete png files */

    for (NSString *item in items) {

        if ([[item pathExtension] isEqualToString:@"png"]) {

            NSString *path = [docDirPath stringByAppendingPathComponent:item];

            [fm removeItemAtPath:path error:&error];

            if (error)

            { /* ... */ }

        }

    }

}