// // KTPhotoScrollViewController.m // KTPhotoBrowser // // Created by Kirby Turner on 2/4/10. // Copyright 2010 White Peak Software Inc. All rights reserved. // #import "KTPhotoScrollViewController.h" #import "KTPhotoBrowserDataSource.h" #import "KTPhotoBrowserGlobal.h" #import "KTPhotoView.h" #import "AppDelegate.h" #import "AFNetworking.h" #import const CGFloat ktkDefaultPortraitToolbarHeight = 44; const CGFloat ktkDefaultLandscapeToolbarHeight = 33; const CGFloat ktkDefaultToolbarHeight = 49; #define BUTTON_DELETEPHOTO 0 #define BUTTON_CANCEL 1 @interface KTPhotoScrollViewController (KTPrivate) - (void)setCurrentIndex:(NSInteger)newIndex; - (void)toggleChrome:(BOOL)hide; - (void)startChromeDisplayTimer; - (void)cancelChromeDisplayTimer; - (void)hideChrome; - (void)showChrome; - (void)swapCurrentAndNextPhotos; - (void)nextPhoto; - (void)previousPhoto; - (void)toggleNavButtons; - (CGRect)frameForPagingScrollView; - (CGRect)frameForPageAtIndex:(NSUInteger)index; - (void)loadPhoto:(NSInteger)index; - (void)unloadPhoto:(NSInteger)index; - (void)trashPhoto; - (void)exportPhoto; @end @implementation KTPhotoScrollViewController @synthesize statusBarStyle = statusBarStyle_; @synthesize statusbarHidden = statusbarHidden_; - (id)initWithDataSource:(id )dataSource andStartWithPhotoAtIndex:(NSUInteger)index { if (self = [super init]) { startWithIndex_ = index; dataSource_ =dataSource ; // Make sure to set wantsFullScreenLayout or the photo // will not display behind the status bar. [self setWantsFullScreenLayout:YES]; BOOL isStatusbarHidden = [[UIApplication sharedApplication] isStatusBarHidden]; [self setStatusbarHidden:isStatusbarHidden]; self.hidesBottomBarWhenPushed = YES; } return self; } - (void)loadView { [super loadView]; CGRect scrollFrame = [self frameForPagingScrollView]; UIScrollView *newView = [[UIScrollView alloc] initWithFrame:scrollFrame]; [newView setAutoresizingMask:UIViewAutoresizingFlexibleWidth|UIViewAutoresizingFlexibleHeight]; [newView setDelegate:self]; UIColor *backgroundColor = [dataSource_ respondsToSelector:@selector(imageBackgroundColor)] ? [dataSource_ imageBackgroundColor] : COLOR_MIAN; [newView setBackgroundColor:backgroundColor]; [newView setAutoresizesSubviews:YES]; [newView setPagingEnabled:YES]; [newView setShowsVerticalScrollIndicator:NO]; [newView setShowsHorizontalScrollIndicator:NO]; [[self view] addSubview:newView]; scrollView_ = newView ; nextButton_ = [[UIBarButtonItem alloc] initWithImage:KTLoadImageFromBundle(@"nextIcon.png") style:UIBarButtonItemStylePlain target:self action:@selector(nextPhoto)]; previousButton_ = [[UIBarButtonItem alloc] initWithImage:KTLoadImageFromBundle(@"previousIcon.png") style:UIBarButtonItemStylePlain target:self action:@selector(previousPhoto)]; shareButton_ = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"share_ifish"] style:UIBarButtonItemStylePlain target:self action:@selector(sharePhoto)]; [shareButton_ setTintColor:[UIColor whiteColor]]; deletButton_ = [[UIBarButtonItem alloc] initWithImage:[UIImage imageNamed:@"delete_ifishImg"] style:UIBarButtonItemStylePlain target:self action:@selector(delectPhoto)]; [deletButton_ setTintColor:[UIColor whiteColor]]; UIBarButtonItem *trashButton = nil; if ([dataSource_ respondsToSelector:@selector(deleteImageAtIndex:)]) { trashButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemTrash target:self action:@selector(trashPhoto)]; } UIBarButtonItem *exportButton = nil; if ([dataSource_ respondsToSelector:@selector(exportImageAtIndex:)]) { exportButton = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemAction target:self action:@selector(exportPhoto)]; } UIBarItem *space = [[UIBarButtonItem alloc] initWithBarButtonSystemItem:UIBarButtonSystemItemFlexibleSpace target:nil action:nil]; NSMutableArray *toolbarItems = [[NSMutableArray alloc] initWithCapacity:7]; if (exportButton) [toolbarItems addObject:exportButton]; [toolbarItems addObject:space]; [toolbarItems addObject:previousButton_]; [toolbarItems addObject:space]; [toolbarItems addObject:nextButton_]; [toolbarItems addObject:space]; //if (trashButton) [toolbarItems addObject:trashButton];//保存图片到相册 CGRect screenFrame = [[UIScreen mainScreen] bounds]; CGRect toolbarFrame = CGRectMake(0, screenFrame.size.height - ktkDefaultToolbarHeight, screenFrame.size.width, ktkDefaultToolbarHeight); toolbar_ = [[UIToolbar alloc] initWithFrame:toolbarFrame]; [toolbar_ setAutoresizingMask:UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleRightMargin]; [toolbar_ setBarStyle:UIBarStyleBlackTranslucent]; [toolbar_ setItems:toolbarItems]; //[[self view] addSubview:toolbar_]; //分享 NSMutableArray *toolbarItems2 = [[NSMutableArray alloc] initWithCapacity:7]; [toolbarItems2 addObject:shareButton_]; [toolbarItems2 addObject:space]; [toolbarItems2 addObject:space]; [toolbarItems2 addObject:space]; [toolbarItems2 addObject:space]; [toolbarItems2 addObject:deletButton_]; CGRect toolbarFrame1 = CGRectMake(0, screenFrame.size.height - ktkDefaultToolbarHeight, screenFrame.size.width, ktkDefaultToolbarHeight); toolbarshare_ = [[UIToolbar alloc] initWithFrame:toolbarFrame1]; [toolbarshare_ setAutoresizingMask:UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight | UIViewAutoresizingFlexibleTopMargin | UIViewAutoresizingFlexibleRightMargin]; [toolbarshare_ setBarStyle:UIBarStyleBlackTranslucent]; [toolbarshare_ setItems:toolbarItems2]; [self.view addSubview:toolbarshare_]; } #pragma mark - 分享图片 -(void)sharePhoto{ [self hideChrome]; LXShareImageVIew *shareView=[[LXShareImageVIew alloc] initWithFrame:[UIScreen mainScreen].bounds]; shareView.delegate = self; [shareView shareShow]; } #pragma mark - LXShareImageVIewdelegate -(void)didSelectButWithBtnTag:(NSInteger)btnTag { // [self hideChrome]; UIImage *shareImage = nil; if (dataSource_) { NSInteger photoIndexToDelete = currentIndex_; // [self unloadPhoto:photoIndexToDelete]; shareImage= [dataSource_ imageAtIndex:photoIndexToDelete]; }else{ return; } UIImage *smallImage = [self scaleFromImage:shareImage toSize:CGSizeMake(kScreenSize.width,kScreenSize.width*2/3)]; //微信分享页 [self getHtmlFileWith:smallImage addTag:btnTag]; } -(void)getHtmlFileWith:(UIImage*)image addTag:(NSInteger)btnTag{ AFHTTPRequestOperationManager*manager=[AFHTTPRequestOperationManager manager]; manager.requestSerializer = [AFJSONRequestSerializer serializer]; manager.responseSerializer=[AFHTTPResponseSerializer serializer]; NSString *title =@"来自爱鱼奇分享"; NSDictionary *paras = @{ @"title":title, @"fileUpload":@"png" }; __weak typeof (self)weakSelf = self; [manager POST:KGetHtmlFile parameters:paras constructingBodyWithBlock:^(id formData) { NSDateFormatter *formatter = [[NSDateFormatter alloc] init]; formatter.dateFormat = @"yyyyMMddHHmmss"; NSString *str = [formatter stringFromDate:[NSDate date]]; NSString *fileName = [NSString stringWithFormat:@"%@.png", str]; NSString *name = @"fileUpload"; NSData* imgdata=UIImagePNGRepresentation(image); [formData appendPartWithFileData:imgdata name:name fileName:fileName mimeType:@"image/png"]; } success:^(AFHTTPRequestOperation *operation, id responseObject) { NSDictionary*resultDic=[NSJSONSerialization JSONObjectWithData:responseObject options:NSJSONReadingMutableContainers error:nil]; NSLog(@"result:%@",resultDic[@"result"]); if ([resultDic[@"result"] isEqualToString:@"100"]) { NSString *htmlName = resultDic[@"data"]; if (htmlName) { NSString *htmlUrl = [NSString stringWithFormat:@"%@/html/%@",JIEKOUPORTHTTP,htmlName]; [self shareImgWith:image resourceUrl:htmlUrl addtag:btnTag]; } }else{ [weakSelf.view makeToast:@"分享失败，为获取分享页url"]; } } failure:^(AFHTTPRequestOperation *operation, NSError *error) { // [self toggleChrome:NO]; [weakSelf.view makeToast:@"网络异常"]; }]; } -(void)shareImgWith:(UIImage *)shareImage resourceUrl:(NSString *)sourceurl addtag:(NSInteger)btnTag{ [self addUserGold]; switch (btnTag) { case 0: { //微信 //创建分享消息对象 UMSocialMessageObject *messageObject = [UMSocialMessageObject messageObject]; UMShareWebpageObject *shareObject = [[UMShareWebpageObject alloc] init]; shareObject.title = @"爱鱼奇"; shareObject.webpageUrl =sourceurl; shareObject.thumbImage = shareImage; //分享消息对象设置分享内容对象 messageObject.shareObject = shareObject; [[UMSocialManager defaultManager] shareToPlatform:UMSocialPlatformType_WechatSession messageObject:messageObject currentViewController:self completion:^(id result, NSError *error) { if (error) { NSLog(@"************Share fail with error %@*********",error); }else{ NSLog(@"response data is %@",result); } }]; } break; case 1: { //朋友圈 //微信 UMSocialMessageObject *messageObject = [UMSocialMessageObject messageObject]; UMShareWebpageObject *shareObject = [[UMShareWebpageObject alloc] init]; shareObject.title = @"爱鱼奇"; shareObject.webpageUrl =sourceurl; shareObject.thumbImage = shareImage; //分享消息对象设置分享内容对象 messageObject.shareObject = shareObject; [[UMSocialManager defaultManager] shareToPlatform:UMSocialPlatformType_WechatTimeLine messageObject:messageObject currentViewController:self completion:^(id result, NSError *error) { if (error) { NSLog(@"************Share fail with error %@*********",error); }else{ NSLog(@"response data is %@",result); } }]; } break; case 2: { //QQ UMSocialMessageObject *messageObject = [UMSocialMessageObject messageObject]; UMShareWebpageObject *shareObject = [[UMShareWebpageObject alloc] init]; shareObject.title = @"爱鱼奇"; shareObject.webpageUrl =sourceurl; shareObject.thumbImage = shareImage; //分享消息对象设置分享内容对象 messageObject.shareObject = shareObject; [[UMSocialManager defaultManager] shareToPlatform:UMSocialPlatformType_QQ messageObject:messageObject currentViewController:self completion:^(id result, NSError *error) { if (error) { NSLog(@"************Share fail with error %@*********",error); }else{ NSLog(@"response data is %@",result); } }]; } break; case 3: { UMSocialMessageObject *messageObject = [UMSocialMessageObject messageObject]; UMShareWebpageObject *shareObject = [[UMShareWebpageObject alloc] init]; shareObject.title = @"爱鱼奇"; shareObject.webpageUrl =sourceurl; shareObject.thumbImage = shareImage; NSString *uslStr= [NSString stringWithFormat:@"来自爱鱼奇分享,#🐟%@🐟#",sourceurl]; shareObject.descr =uslStr; //分享消息对象设置分享内容对象 messageObject.shareObject = shareObject; [[UMSocialManager defaultManager] shareToPlatform:UMSocialPlatformType_Sina messageObject:messageObject currentViewController:self completion:^(id result, NSError *error) { if (error) { NSLog(@"************Share fail with error %@*********",error); }else{ NSLog(@"response data is %@",result); } }]; } break; default: break; } } -(void)addUserGold{ //每日分享图片 加金币 [[IfishUserObsever sharedInstance] addGoldWith:SHARECAMERAPICTURE addType:IFISHADDGOLDTYPE0]; } - (UIImage *) scaleFromImage: (UIImage *) image toSize: (CGSize) size { UIGraphicsBeginImageContext(size); [image drawInRect:CGRectMake(0, 0, size.width, size.height)]; UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext(); UIGraphicsEndImageContext(); return newImage; } #pragma mark - 新加toolbar1上删除图片 -(void)delectPhoto{ UIAlertView *alert=[[UIAlertView alloc] initWithTitle:@"" message:@"是否删除？" delegate:self cancelButtonTitle:@"取消" otherButtonTitles:@"确定", nil]; [alert show]; } - (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex{ if (buttonIndex ==1) { [self deleteCurrentPhoto]; [self startChromeDisplayTimer]; [self.view makeToast:@"图片已删除"]; } } - (void)setTitleWithCurrentPhotoIndex { NSString *formatString = NSLocalizedString(@"%1$i of %2$i", @"Picture X out of Y total."); NSString *title = [NSString stringWithFormat:formatString, currentIndex_ + 1, photoCount_, nil]; [self setTitle:title]; } - (void)scrollToIndex:(NSInteger)index { CGRect frame = scrollView_.frame; frame.origin.x = frame.size.width * index; frame.origin.y = 0; [scrollView_ scrollRectToVisible:frame animated:NO]; } - (void)setScrollViewContentSize { NSInteger pageCount = photoCount_; if (pageCount == 0) { pageCount = 1; } CGSize size = CGSizeMake(scrollView_.frame.size.width * pageCount, scrollView_.frame.size.height / 2); // Cut in half to prevent horizontal scrolling. [scrollView_ setContentSize:size]; } - (void)viewDidLoad { [super viewDidLoad]; photoCount_ = [dataSource_ numberOfPhotos]; [self setScrollViewContentSize]; // Setup our photo view cache. We only keep 3 views in // memory. NSNull is used as a placeholder for the other // elements in the view cache array. photoViews_ = [[NSMutableArray alloc] initWithCapacity:photoCount_]; for (int i=0; i < photoCount_; i++) { [photoViews_ addObject:[NSNull null]]; } } - (void)didReceiveMemoryWarning { // Releases the view if it doesn't have a superview. [super didReceiveMemoryWarning]; // Release any cached data, images, etc that aren't in use. } - (void)viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; //setNav UIButton *back = [UIButton buttonWithType:UIButtonTypeCustom]; back.frame = CGRectMake(0,0,48,44); [back setImage:[UIImage imageNamed:@"back_btn"] forState:UIControlStateNormal]; // [_bakbutton setBackgroundImage:[UIImage imageNamed:@"back_btn"] forState:UIControlStateNormal]; [back addTarget: self action: @selector(goBackAction) forControlEvents: UIControlEventTouchUpInside]; UIBarButtonItem * backItem=[[UIBarButtonItem alloc] initWithCustomView:back]; self.navigationItem.leftBarButtonItem=backItem; // The first time the view appears, store away the previous controller's values so we can reset on pop. UINavigationBar *navbar = [[self navigationController] navigationBar]; //[self hideChrome]; if (!viewDidAppearOnce_) { viewDidAppearOnce_ = YES; navbarWasTranslucent_ = [navbar isTranslucent]; // statusBarStyle_ = [[UIApplication sharedApplication] statusBarStyle]; } // Then ensure translucency. Without it, the view will appear below rather than under it. [navbar setTranslucent:YES]; [[UIApplication sharedApplication] setStatusBarStyle:UIStatusBarStyleBlackTranslucent animated:YES]; // Set the scroll view's content size, auto-scroll to the stating photo, // and setup the other display elements. [self setScrollViewContentSize]; [self setCurrentIndex:startWithIndex_]; [self scrollToIndex:startWithIndex_]; [self setTitleWithCurrentPhotoIndex]; [self toggleNavButtons]; //[self startChromeDisplayTimer]; } - (void)viewWillDisappear:(BOOL)animated { // Reset nav bar translucency and status bar style to whatever it was before. UINavigationBar *navbar = [[self navigationController] navigationBar]; [navbar setTranslucent:navbarWasTranslucent_]; // [[UIApplication sharedApplication] setStatusBarStyle:statusBarStyle_ animated:YES]; [super viewWillDisappear:animated]; } - (void)viewDidDisappear:(BOOL)animated { [self cancelChromeDisplayTimer]; [super viewDidDisappear:animated]; } - (void)deleteCurrentPhoto { if (dataSource_) { // TODO: Animate the deletion of the current photo. NSInteger photoIndexToDelete = currentIndex_; [self unloadPhoto:photoIndexToDelete]; [dataSource_ deleteImageAtIndex:photoIndexToDelete]; photoCount_ -= 1; if (photoCount_ == 0) { [self showChrome]; [[self navigationController] popViewControllerAnimated:YES]; } else { NSInteger nextIndex = photoIndexToDelete; if (nextIndex == photoCount_) { nextIndex -= 1; } [self setCurrentIndex:nextIndex]; [self setScrollViewContentSize]; } } } - (void)toggleNavButtons { [previousButton_ setEnabled:(currentIndex_ > 0)]; [nextButton_ setEnabled:(currentIndex_ < photoCount_ - 1)]; } #pragma mark - #pragma mark Frame calculations #define PADDING 20 - (CGRect)frameForPagingScrollView { CGRect frame = [[UIScreen mainScreen] bounds]; frame.origin.x -= PADDING; frame.size.width += (2 * PADDING); return frame; } - (CGRect)frameForPageAtIndex:(NSUInteger)index { // We have to use our paging scroll view's bounds, not frame, to calculate the page placement. When the device is in // landscape orientation, the frame will still be in portrait because the pagingScrollView is the root view controller's // view, so its frame is in window coordinate space, which is never rotated. Its bounds, however, will be in landscape // because it has a rotation transform applied. CGRect bounds = [scrollView_ bounds]; CGRect pageFrame = bounds; pageFrame.size.width -= (2 * PADDING); pageFrame.origin.x = (bounds.size.width * index) + PADDING; return pageFrame; } #pragma mark - #pragma mark Photo (Page) Management - (void)loadPhoto:(NSInteger)index { if (index < 0 || index >= photoCount_) { return; } id currentPhotoView = [photoViews_ objectAtIndex:index]; if (NO == [currentPhotoView isKindOfClass:[KTPhotoView class]]) { // Load the photo view. CGRect frame = [self frameForPageAtIndex:index]; KTPhotoView *photoView = [[KTPhotoView alloc] initWithFrame:frame]; [photoView setScroller:self]; [photoView setIndex:index]; [photoView setDeleteImageDelegate:self];//保存图片到相册 [photoView setBackgroundColor:[UIColor clearColor]]; // Set the photo image. if (dataSource_) { if ([dataSource_ respondsToSelector:@selector(imageAtIndex:photoView:)] == NO) { UIImage *image = [dataSource_ imageAtIndex:index]; [photoView setImage:image]; } else { [dataSource_ imageAtIndex:index photoView:photoView]; } } [scrollView_ addSubview:photoView]; [photoViews_ replaceObjectAtIndex:index withObject:photoView]; } else { // Turn off zooming. [currentPhotoView turnOffZoom]; } } -(void)KTPhotoViewDeleteImage:(NSInteger)deleteIndex{//保存图片到相册 if (dataSource_) { /* *1. remove当前图片的view（KTPhotoView）,及之后的view *2. 将photoViews_下标为deleteIndex及之后的元素置为NULL */ for (int i=(int)deleteIndex; i= photoCount_) { return; } id currentPhotoView = [photoViews_ objectAtIndex:index]; if (NO == [currentPhotoView isKindOfClass:[KTPhotoView class]]) { // Load the photo view. CGRect frame = [self frameForPageAtIndex:index]; KTPhotoView *photoView = [[KTPhotoView alloc] initWithFrame:frame]; [photoView setScroller:self]; [photoView setIndex:index]; [photoView setDeleteImageDelegate:self];//保存图片到相册 [photoView setBackgroundColor:[UIColor clearColor]]; // Set the photo image. if (dataSource_) { if ([dataSource_ respondsToSelector:@selector(imageAtIndex:photoView:)] == NO) { UIImage *image = [dataSource_ imageAtIndex:index]; [photoView setImage:image]; } else { /* *1. 取screenshotPaths数组的第index张图片赋予photoView */ [dataSource_ imageAtIndex:index photoView:photoView]; } } [scrollView_ addSubview:photoView]; [photoViews_ replaceObjectAtIndex:index withObject:photoView]; } else { // Turn off zooming. [currentPhotoView turnOffZoom]; } } - (void)unloadPhoto:(NSInteger)index { if (index < 0 || index >= photoCount_) { return; } id currentPhotoView = [photoViews_ objectAtIndex:index]; if ([currentPhotoView isKindOfClass:[KTPhotoView class]]) { [currentPhotoView removeFromSuperview]; [photoViews_ replaceObjectAtIndex:index withObject:[NSNull null]]; } } - (void)setCurrentIndex:(NSInteger)newIndex { currentIndex_ = newIndex; [self loadPhoto:currentIndex_]; [self loadPhoto:currentIndex_ + 1]; [self loadPhoto:currentIndex_ - 1]; [self unloadPhoto:currentIndex_ + 2]; [self unloadPhoto:currentIndex_ - 2]; [self setTitleWithCurrentPhotoIndex]; [self toggleNavButtons]; } #pragma mark - #pragma mark Rotation Magic - (void)updateToolbarWithOrientation:(UIInterfaceOrientation)interfaceOrientation { CGRect toolbarFrame = toolbar_.frame; if ((interfaceOrientation) == UIInterfaceOrientationPortrait || (interfaceOrientation) == UIInterfaceOrientationPortraitUpsideDown) { toolbarFrame.size.height = ktkDefaultPortraitToolbarHeight; } else { toolbarFrame.size.height = ktkDefaultLandscapeToolbarHeight+1; } toolbarFrame.size.width = self.view.frame.size.width; toolbarFrame.origin.y = self.view.frame.size.height - toolbarFrame.size.height; toolbar_.frame = toolbarFrame; CGRect toolbarFrame1 = toolbarshare_.frame; if ((interfaceOrientation) == UIInterfaceOrientationPortrait || (interfaceOrientation) == UIInterfaceOrientationPortraitUpsideDown) { toolbarFrame1.size.height = ktkDefaultPortraitToolbarHeight; } else { toolbarFrame1.size.height = ktkDefaultLandscapeToolbarHeight+1; } toolbarFrame1.size.width = self.view.frame.size.width; toolbarFrame1.origin.y = self.view.frame.size.height - toolbarFrame1.size.height; toolbarshare_.frame = toolbarFrame1; } - (void)layoutScrollViewSubviews { [self setScrollViewContentSize]; NSArray *subviews = [scrollView_ subviews]; for (KTPhotoView *photoView in subviews) { CGPoint restorePoint = [photoView pointToCenterAfterRotation]; CGFloat restoreScale = [photoView scaleToRestoreAfterRotation]; [photoView setFrame:[self frameForPageAtIndex:[photoView index]]]; [photoView setMaxMinZoomScalesForCurrentBounds]; [photoView restoreCenterPoint:restorePoint scale:restoreScale]; } // adjust contentOffset to preserve page location based on values collected prior to location CGFloat pageWidth = scrollView_.bounds.size.width; CGFloat newOffset = (firstVisiblePageIndexBeforeRotation_ * pageWidth) + (percentScrolledIntoFirstVisiblePage_ * pageWidth); scrollView_.contentOffset = CGPointMake(newOffset, 0); } - (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interfaceOrientation { return NO; } - (void)willRotateToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration { // here, our pagingScrollView bounds have not yet been updated for the new interface orientation. So this is a good // place to calculate the content offset that we will need in the new orientation CGFloat offset = scrollView_.contentOffset.x; CGFloat pageWidth = scrollView_.bounds.size.width; if (offset >= 0) { firstVisiblePageIndexBeforeRotation_ = floorf(offset / pageWidth); percentScrolledIntoFirstVisiblePage_ = (offset - (firstVisiblePageIndexBeforeRotation_ * pageWidth)) / pageWidth; } else { firstVisiblePageIndexBeforeRotation_ = 0; percentScrolledIntoFirstVisiblePage_ = offset / pageWidth; } } - (void)willAnimateRotationToInterfaceOrientation:(UIInterfaceOrientation)toInterfaceOrientation duration:(NSTimeInterval)duration { [self layoutScrollViewSubviews]; // Rotate the toolbar. [self updateToolbarWithOrientation:toInterfaceOrientation]; // Adjust navigation bar if needed. if (isChromeHidden_ && statusbarHidden_ == NO) { UINavigationBar *navbar = [[self navigationController] navigationBar]; CGRect frame = [navbar frame]; frame.origin.y = 20; [navbar setFrame:frame]; } } - (void)didRotateFromInterfaceOrientation:(UIInterfaceOrientation)fromInterfaceOrientation { [self startChromeDisplayTimer]; } - (UIView *)rotatingFooterView { //return toolbar_; return toolbarshare_; } #pragma mark - #pragma mark Chrome Helpers - (void)toggleChromeDisplay { [self toggleChrome:!isChromeHidden_]; } - (void)toggleChrome:(BOOL)hide { isChromeHidden_ = hide; if (hide) { [UIView beginAnimations:nil context:nil]; [UIView setAnimationDuration:0.4]; } //hide if ( ! [self isStatusbarHidden] ) { if ([[UIApplication sharedApplication] respondsToSelector:@selector(setStatusBarHidden:withAnimation:)]) { [[UIApplication sharedApplication] setStatusBarHidden:hide withAnimation:NO]; } else { // Deprecated in iOS 3.2+. id sharedApp = [UIApplication sharedApplication]; // Get around deprecation warnings. [sharedApp setStatusBarHidden:hide animated:NO]; } } CGFloat alpha = hide ? 0.0 : 1.0; // Must set the navigation bar's alpha, otherwise the photo // view will be pushed until the navigation bar. UINavigationBar *navbar = [[self navigationController] navigationBar]; [navbar setAlpha:alpha]; [toolbar_ setAlpha:alpha]; [toolbarshare_ setAlpha:alpha]; if (hide) { [UIView commitAnimations]; } if ( ! isChromeHidden_ ) { [self startChromeDisplayTimer]; } } - (void)hideChrome { if (chromeHideTimer_ && [chromeHideTimer_ isValid]) { [chromeHideTimer_ invalidate]; chromeHideTimer_ = nil; } [self toggleChrome:YES]; } - (void)showChrome { [self toggleChrome:NO]; } - (void)startChromeDisplayTimer { [self cancelChromeDisplayTimer]; chromeHideTimer_ = [NSTimer scheduledTimerWithTimeInterval:5.0 target:self selector:@selector(hideChrome) userInfo:nil repeats:NO]; } - (void)cancelChromeDisplayTimer { if (chromeHideTimer_) { [chromeHideTimer_ invalidate]; chromeHideTimer_ = nil; } } #pragma mark - #pragma mark UIScrollViewDelegate - (void)scrollViewDidScroll:(UIScrollView *)scrollView { CGFloat pageWidth = scrollView.frame.size.width; float fractionalPage = scrollView.contentOffset.x / pageWidth; NSInteger page = floor(fractionalPage); if (page != currentIndex_) { [self setCurrentIndex:page]; } } - (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView { //[self hideChrome]; } #pragma mark - #pragma mark Toolbar Actions - (void)nextPhoto { [self scrollToIndex:currentIndex_ + 1]; [self startChromeDisplayTimer]; } - (void)previousPhoto { [self scrollToIndex:currentIndex_ - 1]; [self startChromeDisplayTimer]; } - (void)trashPhoto { UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:nil delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:@"删除" otherButtonTitles:nil]; [actionSheet showInView:[self view]]; } - (void) exportPhoto { if ([dataSource_ respondsToSelector:@selector(exportImageAtIndex:)]) [dataSource_ exportImageAtIndex:currentIndex_]; [self startChromeDisplayTimer]; } #pragma mark - #pragma mark UIActionSheetDelegate // Called when a button is clicked. The view will be automatically dismissed after this call returns - (void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex { if (buttonIndex == BUTTON_DELETEPHOTO) { [self deleteCurrentPhoto]; } [self startChromeDisplayTimer]; } -(void)goBackAction{ [self.navigationController popViewControllerAnimated:YES]; } //-(BOOL)shouldAutorotate{ // return YES; //} // //- (BOOL)shouldAutorotateToInterfaceOrientation:(UIInterfaceOrientation)interface { // return (interface == UIInterfaceOrientationPortrait ); //} // //#ifdef IOS6 // //- (UIInterfaceOrientation)preferredInterfaceOrientationForPresentation //{ // return UIInterfaceOrientationPortrait; //} // //- (BOOL)shouldAutorotate { // return NO; //} // //- (NSUInteger)supportedInterfaceOrientations { // return UIInterfaceOrientationMaskPortrait; //} //#endif // //-(NSUInteger)supportedInterfaceOrientations{ // return UIInterfaceOrientationMaskPortrait; //} // //-(UIInterfaceOrientation)preferredInterfaceOrientationForPresentation{ // return UIInterfaceOrientationPortrait; //} @end