- (void)saveMediaToCameraRoll
{// // traverse the main bundle to find out all image filesNSMutableArray *picArray = [NSMutableArray arrayWithCapacity:3];NSArray *jpgFiles = [[NSBundle mainBundle] pathsForResourcesOfType:@"jpg" inDirectory:nil];[picArray addObjectsFromArray:jpgFiles];NSArray *pngArray = [[NSBundle mainBundle] pathsForResourcesOfType:@"png" inDirectory:nil];// exclude launch image of this projectNSMutableArray *picExcludeDefault = [NSMutableArray arrayWithArray:pngArray];for (NSString *path in pngArray) {NSArray *pathCom = [path pathComponents];if ([pathCom containsObject:@"Default-568h@2x.png"]|| [pathCom containsObject:@"Default.png"]|| [pathCom containsObject:@"Default@2x.png"]) {[picExcludeDefault removeObject:path];}}pngArray = picExcludeDefault;[picArray addObjectsFromArray:pngArray];// traverse the main bundle to find out all mov filesNSMutableArray *videoArray = [NSMutableArray arrayWithCapacity:3];NSArray *movs = [[NSBundle mainBundle] pathsForResourcesOfType:@"mov" inDirectory:nil];[videoArray addObjectsFromArray:movs];_mediaItemCount = picArray.count + videoArray.count;if (delegate && [delegate respondsToSelector:@selector(saveToUtilStartCopy:)]) {[delegate saveToUtilStartCopy:_mediaItemCount];}// save pic to camera rollfor (id item in picArray) {UIImage *img = [[UIImage alloc] initWithContentsOfFile:item];// Note：save to camera roll is async, so the later item may copy complete than previous item
        UIImageWriteToSavedPhotosAlbum(img, self, @selector(image:didFinishSavingWithError:contextInfo:), NULL);[img release];}// save video to camera rollfor (id item in videoArray) {if (UIVideoAtPathIsCompatibleWithSavedPhotosAlbum(item)) {// Note：save to camera roll is async, so the later item may copy complete than previous item
            UISaveVideoAtPathToSavedPhotosAlbum(item, self, @selector(video:didFinishSavingWithError:contextInfo:), NULL);}else {[self updateProcessWithError:[NSError errorWithDomain:@"copy video error" code:-1 userInfo:nil]];}}
}