// // NTESGalleryViewController.m // NIMDemo // // Created by ght on 15-2-3. // Copyright (c) 2015年 Netease. All rights reserved. // #import "NTESGalleryViewController.h" #import "UIImageView+WebCache.h" #import "UIView+NTES.h" #import "NTESSnapchatAttachment.h" #import "NTESSessionUtil.h" #import "UIView+Toast.h" #import "NTESMediaPreviewViewController.h" #import "UIAlertView+NTESBlock.h" #import "NIMKitAuthorizationTool.h" @implementation NTESGalleryItem @end @interface NTESGalleryViewController () { BOOL _onceToken; } @property (strong, nonatomic) IBOutlet UIImageView *galleryImageView; @property (nonatomic,strong) NTESGalleryItem *currentItem; @property (nonatomic,strong) NIMSession *session; @property (nonatomic,strong) IBOutlet UIScrollView *scrollView; @end @implementation NTESGalleryViewController - (instancetype)initWithItem:(NTESGalleryItem *)item session:(NIMSession *)session { if (self = [super initWithNibName:@"NTESGalleryViewController" bundle:nil]) { _currentItem = item; _session = session; } return self; } - (void)viewDidLoad { [super viewDidLoad]; self.view.backgroundColor = [UIColor blackColor]; self.scrollView.showsVerticalScrollIndicator = NO; self.scrollView.showsHorizontalScrollIndicator = NO; } - (void)viewDidLayoutSubviews { if (!_onceToken) { [self loadImage]; _onceToken = YES; } } - (void)viewWillAppear:(BOOL)animated{ self.tabBarController.tabBar.hidden = YES; } - (void)viewWillDisappear:(BOOL)animated{ self.tabBarController.tabBar.hidden = NO; } - (void)loadImage { UIEdgeInsets insets = UIEdgeInsetsZero; if (@available(iOS 11.0, *)) { insets = self.scrollView.adjustedContentInset; } else { insets = self.scrollView.contentInset; } self.scrollView.contentSize = CGSizeMake(self.scrollView.width - insets.left - insets.right, self.scrollView.height - insets.top - insets.bottom); UIButton * btn = [UIButton buttonWithType:UIButtonTypeCustom]; btn.frame = CGRectMake(0, 0, 40, 40); [btn setImage:[UIImage imageNamed:@"fanhui2"] forState:UIControlStateNormal]; btn.imageEdgeInsets = UIEdgeInsetsMake(0, -20, 0, 0); [btn addTarget:self action:@selector(backClick) forControlEvents:UIControlEventTouchUpInside]; UIBarButtonItem *leftItem = [[UIBarButtonItem alloc] initWithCustomView:btn]; UIBarButtonItem *nagetiveSpacer = [[UIBarButtonItem alloc]initWithBarButtonSystemItem:UIBarButtonSystemItemFixedSpace target:nil action:nil]; nagetiveSpacer.width = -12;//这个值可以根据自己需要自己调整 self.navigationItem.leftBarButtonItems = @[nagetiveSpacer, leftItem]; [self layoutGallery:_currentItem.size]; NSURL *url = [NSURL URLWithString:_currentItem.imageURL]; typeof(self) weakSelf = self; [self.galleryImageView sd_setImageWithURL:url placeholderImage:[UIImage imageWithContentsOfFile:_currentItem.thumbPath] options:SDWebImageRetryFailed | SDWebImageAvoidAutoSetImage completed:^(UIImage * _Nullable image, NSError * _Nullable error, SDImageCacheType cacheType, NSURL * _Nullable imageURL) { dispatch_async(dispatch_get_main_queue(), ^ { if (!error) { [weakSelf layoutGallery:image.size]; weakSelf.galleryImageView.image = image; } }); }]; if (self.session) { [self setupRightNavItem]; } if ([_currentItem.name length]) { self.navigationItem.title = _currentItem.name; } UILongPressGestureRecognizer *recognizer = [[UILongPressGestureRecognizer alloc] initWithTarget:self action:@selector(onLongPressImageView:)]; [self.scrollView addGestureRecognizer:recognizer]; } -(void)backClick{ [self.navigationController popViewControllerAnimated:YES]; } - (void)layoutGallery:(CGSize)size { CGFloat width = size.width; CGFloat height = size.height; CGFloat scale = width > height? self.scrollView.contentSize.height / height : self.scrollView.contentSize.width / width; if (height * scale > self.scrollView.contentSize.height) { self.galleryImageView.size = CGSizeMake(width * scale, height * scale); self.scrollView.contentSize = self.galleryImageView.size; self.galleryImageView.contentMode = UIViewContentModeScaleAspectFill; } else { self.galleryImageView.size = self.scrollView.contentSize; self.galleryImageView.contentMode = UIViewContentModeScaleAspectFit; } self.galleryImageView.centerY = self.galleryImageView.height * .5f ; } - (void)setupRightNavItem { UIButton *button = [UIButton buttonWithType:UIButtonTypeCustom]; [button addTarget:self action:@selector(onMore:) forControlEvents:UIControlEventTouchUpInside]; [button setImage:[UIImage imageNamed:@"icon_gallery_more_normal"] forState:UIControlStateNormal]; [button setImage:[UIImage imageNamed:@"icon_gallery_more_pressed"] forState:UIControlStateHighlighted]; [button sizeToFit]; UIBarButtonItem *buttonItem = [[UIBarButtonItem alloc] initWithCustomView:button]; self.navigationItem.rightBarButtonItem = buttonItem; } - (void)onMore:(id)sender { NIMMessageSearchOption *option = [[NIMMessageSearchOption alloc] init]; option.limit = 0; option.messageTypes = @[@(NIMMessageTypeImage),@(NIMMessageTypeVideo)]; __weak typeof(self) weakSelf = self; [[NIMSDK sharedSDK].conversationManager searchMessages:self.session option:option result:^(NSError * _Nullable error, NSArray * _Nullable messages) { if (weakSelf) { NSMutableArray *objects = [[NSMutableArray alloc] init]; NTESMediaPreviewObject *focusObject; //显示的时候新的在前老的在后，逆序排列 //如果需要微信的显示顺序，则直接将这段代码去掉即可 NSArray *array = messages.reverseObjectEnumerator.allObjects; for (NIMMessage *message in array) { switch (message.messageType) { case NIMMessageTypeVideo:{ NTESMediaPreviewObject *object = [weakSelf previewObjectByVideo:message.messageObject]; [objects addObject:object]; break; } case NIMMessageTypeImage:{ NTESMediaPreviewObject *object = [weakSelf previewObjectByImage:message.messageObject]; //图片 thumbPath 一致，就认为是本次浏览的图片 if ([message.messageId isEqualToString:weakSelf.currentItem.itemId]) { focusObject = object; } [objects addObject:object]; break; } default: break; } } NTESMediaPreviewViewController *vc = [[NTESMediaPreviewViewController alloc] initWithPriviewObjects:objects focusObject:focusObject]; [weakSelf.navigationController pushViewController:vc animated:YES]; } }]; } - (void)onLongPressImageView:(UILongPressGestureRecognizer *)gestureRecognizer { if (gestureRecognizer.state == UIGestureRecognizerStateBegan) { UIAlertController *controller = [[UIAlertController alloc] init]; __weak typeof(self) weakSelf = self; NSURL *url = [NSURL URLWithString:weakSelf.currentItem.imageURL]; UIImage *image = [[SDWebImageManager sharedManager].imageCache imageFromCacheForKey:[[SDWebImageManager sharedManager] cacheKeyForURL:url]]; if (image) { [[[controller addAction:@"保存至相册" style:UIAlertActionStyleDefault handler:^(UIAlertAction *action) { [NIMKitAuthorizationTool requestPhotoLibraryAuthorization:^(NIMKitAuthorizationStatus status) { switch (status) { case NIMKitAuthorizationStatusAuthorized: UIImageWriteToSavedPhotosAlbum(image, weakSelf, @selector(image:didFinishSavingWithError:contextInfo:), NULL); break; default: [weakSelf.view makeToast:@"没有开启权限，请开启权限" duration:2.0 position:CSToastPositionCenter]; break; } }]; }]addAction:@"取消" style:UIAlertActionStyleCancel handler:^(UIAlertAction *action) {}] show]; } } } - (void)image:(UIImage *)image didFinishSavingWithError:(NSError *)error contextInfo:(void *)contextInfo { NSString *toast = (!image || error)? [NSString stringWithFormat:@"保存图片失败 , 错误：%@",error] : @"保存图片成功"; [self.view makeToast:toast duration:2.0 position:CSToastPositionCenter]; } - (NTESMediaPreviewObject *)previewObjectByVideo:(NIMVideoObject *)object { NTESMediaPreviewObject *previewObject = [[NTESMediaPreviewObject alloc] init]; previewObject.objectId = object.message.messageId; previewObject.thumbPath = object.coverPath; previewObject.thumbUrl = object.coverUrl; previewObject.path = object.path; previewObject.url = object.url; previewObject.type = NTESMediaPreviewTypeVideo; previewObject.timestamp = object.message.timestamp; previewObject.displayName = object.displayName; previewObject.duration = object.duration; previewObject.imageSize = object.coverSize; return previewObject; } - (NTESMediaPreviewObject *)previewObjectByImage:(NIMImageObject *)object { NTESMediaPreviewObject *previewObject = [[NTESMediaPreviewObject alloc] init]; previewObject.objectId = object.message.messageId; previewObject.thumbPath = object.thumbPath; previewObject.thumbUrl = object.thumbUrl; previewObject.path = object.path; previewObject.url = object.url; previewObject.type = NTESMediaPreviewTypeImage; previewObject.timestamp = object.message.timestamp; previewObject.displayName = object.displayName; previewObject.imageSize = object.size; return previewObject; } @end @interface SingleSnapView : UIImageView @property (nonatomic,strong) UIProgressView *progressView; @property (nonatomic,copy) NIMCustomObject *messageObject; - (instancetype)initWithFrame:(CGRect)frame messageObject:(NIMCustomObject *)object; - (void)setProgress:(CGFloat)progress; @end @implementation NTESGalleryViewController(SingleView) + (UIView *)alertSingleSnapViewWithMessage:(NIMMessage *)message baseView:(UIView *)view{ NIMCustomObject *messageObject = (NIMCustomObject *)message.messageObject; if (![messageObject isKindOfClass:[NIMCustomObject class]] || ![messageObject.attachment isKindOfClass:[NTESSnapchatAttachment class]]) { return nil; } SingleSnapView *galleryImageView = [[SingleSnapView alloc] initWithFrame:[UIScreen mainScreen].bounds messageObject:messageObject]; galleryImageView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight; galleryImageView.backgroundColor = [UIColor blackColor]; galleryImageView.contentMode = UIViewContentModeScaleAspectFit; galleryImageView.userInteractionEnabled = NO; [view presentView:galleryImageView animated:YES complete:^{ NTESSnapchatAttachment *attachment = (NTESSnapchatAttachment *)messageObject.attachment; if ([[NSFileManager defaultManager] fileExistsAtPath:attachment.filepath isDirectory:nil]) { galleryImageView.image = [UIImage imageWithContentsOfFile:attachment.filepath]; galleryImageView.progress = 1.0; } else { [NTESGalleryViewController downloadImage:attachment.url imageView:galleryImageView]; } }]; return galleryImageView; } + (void)downloadImage:(NSString *)url imageView:(SingleSnapView *)imageView{ __weak typeof(imageView) wImageView = imageView; [imageView sd_setImageWithURL:[NSURL URLWithString:url] placeholderImage:nil options:SDWebImageCacheMemoryOnly progress:^(NSInteger receivedSize, NSInteger expectedSize, NSURL * _Nullable targetURL) { dispatch_async_main_safe(^{ wImageView.progress = (CGFloat)receivedSize / expectedSize; }); } completed:^(UIImage * _Nullable image, NSError * _Nullable error, SDImageCacheType cacheType, NSURL * _Nullable imageURL) { if (error) { [wImageView makeToast:@"下载图片失败" duration:2 position:CSToastPositionCenter]; }else{ wImageView.progress = 1.0; } }]; } @end @implementation SingleSnapView - (instancetype)initWithFrame:(CGRect)frame messageObject:(NIMCustomObject *)object { self = [super initWithFrame:frame]; if (self) { _messageObject = object; _progressView = [[UIProgressView alloc] initWithFrame:CGRectZero]; CGFloat width = 200.f * UISreenWidthScale; _progressView.width = width; _progressView.hidden = YES; [self addSubview:_progressView]; } return self; } - (void)setProgress:(CGFloat)progress{ [self.progressView setProgress:progress]; [self.progressView setHidden:progress>0.99]; } - (void)layoutSubviews{ [super layoutSubviews]; self.progressView.centerY = self.height *.5; self.progressView.centerX = self.width *.5; } @end