ios添加删除查看相册或拍照图片实现
来源：互联网 发布：六爻排盘软件下载 编辑：程序博客网 时间：2024/06/07 19:25
使用collectionView实现添加删除相册或拍照图片的效果，并且可以点击查看添加的图片，可以放大查看的图片
下列方法中用到infoChooseView的是自定义的选择视图，可以将其替换成UIAlterViewController
picCollectionView
#import <UIKit/UIKit.h>#import "PicCollectionViewCell.h"#import "ZoomImageScrollView.h"#import "infoChooseView.h"#import "InfoAcquisitionModel.h"#import "infoRecordView.h"@protocol PicCollectionViewDelegate<NSObject>@optional//- (void)openAlbum;//选择相册////- (void)openCamera;//选择拍照- (void)changeViewHeight:(NSInteger)row;//动态改变mainView高度@required- (void)showChooseView;//展示选择视图- (void)removePicture:(NSInteger)tag;//传tag给父视图，以删除对应数据@end@interface PicCollectionView : UIView<UICollectionViewDelegate,UICollectionViewDataSource,UICollectionViewDelegateFlowLayout>{ ZoomImageScrollView *zoomImageView; NSString *pushImageName;//待加入照片名 UILabel *addImageStrLabel; //添加图片提示}@property (nonatomic,weak)id<PicCollectionViewDelegate>delegate;@property (nonatomic,strong)infoChooseView *chooseView;//选择视图@property (nonatomic,strong)infoRecordView *recordView;//录音视图@property (nonatomic,strong)UICollectionViewLayout *customLayout;@property (nonatomic,strong)UICollectionView *collectionView;@property (nonatomic,strong)NSMutableArray *imageArray;//照片数组@property (nonatomic,strong)NSMutableArray *dataArray;//数据数组，用于判断数据类型-(void)addImage:(UIImage *)image;@end#import "PicCollectionView.h"#define COLLECTION_VIEW_WiDTH SCREEN_WIDTH * 0.9@implementation PicCollectionView- (instancetype)initWithFrame:(CGRect)frame{ self = [super initWithFrame:frame]; if (self) { [self setupView]; } return self;}- (void)setupView{ [self loadCollectionView];}//创建collectionView- (void)loadCollectionView{ float labelX = (IS_IPAD)?SCREEN_HEIGHT * 0.2:SCREEN_HEIGHT * 0.15; if(_imageArray.count == 0) { _imageArray = [NSMutableArray array]; } if (_dataArray.count == 0) { _dataArray = [NSMutableArray array]; } pushImageName = @"plus.png"; // cell的布局方式，默认流水布局（UICollectionViewFlowLayout） _customLayout = [[UICollectionViewFlowLayout alloc] init]; // 设置滚动方式为水平，默认是垂直滚动 // [layout setScrollDirection:UICollectionViewScrollDirectionHorizontal]; // 初始化UICollectionView _collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 0, SCREEN_WIDTH * 0.9,SCREEN_HEIGHT * 0.1) collectionViewLayout:_customLayout]; _collectionView.allowsSelection = NO;// _collectionView.backgroundColor = [UIColor colorWithRed:235.0/255.0 green:235.0/255.0 blue:235.0/255.0 alpha:1]; _collectionView.backgroundColor = [UIColor whiteColor]; // 注册cell，此处的Identifier和DataSource方法中的Identifier保持一致，cell只能通过注册来确定重用标识符 [_collectionView registerClass:[PicCollectionViewCell class] forCellWithReuseIdentifier:@"myCell"]; _collectionView.delegate = self; _collectionView.dataSource = self; [self addSubview:_collectionView]; //上传图片提示 addImageStrLabel = [[UILabel alloc]init]; addImageStrLabel.text = @"请添加踏勘内容"; addImageStrLabel.textColor = [UIColor colorWithRed:153.0/255.0 green:153.0/255.0 blue:153.0/255.0 alpha:1.0]; [_collectionView addSubview:addImageStrLabel]; [addImageStrLabel mas_makeConstraints:^(MASConstraintMaker *make) { make.size.mas_equalTo(CGSizeMake(200, 20)); make.left.mas_equalTo(labelX); make.centerY.mas_equalTo(_collectionView.centerY).offset(0); }];}#pragma mark - UICollectionView DataSource// section数- (NSInteger)numberOfSectionsInCollectionView:(UICollectionView *)collectionView { return 1;}// section内行数- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section { return _imageArray.count + 1;}// 每个cell的尺寸- (CGSize)collectionView:(UICollectionView *)collectionView layout:(nonnull UICollectionViewLayout *)collectionViewLayout sizeForItemAtIndexPath:(nonnull NSIndexPath *)indexPath { return CGSizeMake(SCREEN_HEIGHT * 0.09,SCREEN_HEIGHT * 0.09);}//// 垂直间距//- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(nonnull UICollectionViewLayout *)collectionViewLayout minimumLineSpacingForSectionAtIndex:(NSInteger)section {// return SCREEN_HEIGHT * 0.025;//}////// 水平间距//- (CGFloat)collectionView:(UICollectionView *)collectionView layout:(nonnull UICollectionViewLayout *)collectionViewLayout minimumInteritemSpacingForSectionAtIndex:(NSInteger)section {// return (COLLECTION_VIEW_WiDTH - SCREEN_HEIGHT * 0.36 - SCREEN_HEIGHT * 0.24)/3.0;//}// 设置每个cell上下左右相距- (UIEdgeInsets)collectionView:(UICollectionView *)collectionView layout:(UICollectionViewLayout*)collectionViewLayout insetForSectionAtIndex:(NSInteger)section { return UIEdgeInsetsMake(SCREEN_HEIGHT * 0.005, (COLLECTION_VIEW_WiDTH - SCREEN_HEIGHT * 0.36)/4.0, SCREEN_HEIGHT * 0.005, (COLLECTION_VIEW_WiDTH - SCREEN_HEIGHT * 0.36)/4.0);}// cell- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(nonnull NSIndexPath *)indexPath { PicCollectionViewCell *cell = (PicCollectionViewCell *)[collectionView dequeueReusableCellWithReuseIdentifier:@"myCell" forIndexPath:indexPath]; if (indexPath.row == _imageArray.count) { [cell.profilePhoto setImage:[UIImage imageNamed:pushImageName]]; cell.closeButton.hidden = YES; //没有任何图片 if (_imageArray.count == 0) { addImageStrLabel.hidden = NO; } else{ addImageStrLabel.hidden = YES; } } else{ [cell.profilePhoto setImage:_imageArray[indexPath.item]]; cell.closeButton.hidden = NO; } [cell setBigImageViewWithImage:nil]; cell.profilePhoto.tag = [indexPath item] + 20000; //添加图片cell点击事件 UITapGestureRecognizer *singleTap = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(tapProfileImage:)]; singleTap.numberOfTapsRequired = 1; cell.profilePhoto .userInteractionEnabled = YES; [cell.profilePhoto addGestureRecognizer:singleTap]; cell.closeButton.tag = [indexPath item] + 20000; [cell.closeButton addTarget:self action:@selector(deletePhoto:) forControlEvents:UIControlEventTouchUpInside]; [self changeCollectionViewHeight]; return cell;}#pragma mark - UICollectionView Delegate#pragma mark - 图片cell点击事件//点击图片看大图- (void) tapProfileImage:(UITapGestureRecognizer *)gestureRecognizer{ UIImageView *tableGridImage = (UIImageView*)gestureRecognizer.view; NSInteger index = tableGridImage.tag - 20000; if (index == (_imageArray.count)) { //添加新图片// [self addNewImage]; if(_imageArray.count < 9) { [self.delegate showChooseView]; }else{ [University_Util showAlert:@"最多添加9条信息"]; } } else{ InfoAcquisitionModel *model = [[InfoAcquisitionModel alloc]init]; model = _dataArray[index]; if ([model.type isEqualToString:@"1"]) { //点击放大查看 PicCollectionViewCell *cell = (PicCollectionViewCell*)[_collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:index inSection:0]]; if (!cell.BigImageView || !cell.BigImageView.image) { [cell setBigImageViewWithImage:[_imageArray objectAtIndex:index]]; } UITapGestureRecognizer *tap = [[UITapGestureRecognizer alloc]init]; [tap addTarget:self action:@selector(closeImageBtnClick)]; [UIView animateWithDuration:0.5 animations:^{ //zoomImage zoomImageView = [[ZoomImageScrollView alloc]initWithFrame:[UIScreen mainScreen].bounds]; [zoomImageView setBackgroundColor:[UIColor grayColor]]; zoomImageView.imageView.contentMode = UIViewContentModeScaleAspectFit; [zoomImageView addGestureRecognizer:tap]; [zoomImageView.imageView setImage:cell.BigImageView.image]; [[self viewController].view addSubview:zoomImageView]; }]; }else { _recordView = [[infoRecordView alloc]init]; [_recordView playRecord:model.path view:[self viewController].view]; } }}#pragma mark - 选择图片- (void)addNewImage{ if (!_chooseView) { _chooseView = [[infoChooseView alloc]initWithFrame:[UIScreen mainScreen].bounds]; [[self viewController].view addSubview:_chooseView]; }}#pragma mark - 删除照片- (void)deletePhoto:(UIButton *)sender{ [_imageArray removeObjectAtIndex:sender.tag - 20000]; //传参数给父视图 [self.delegate removePicture:sender.tag - 20000]; [self.collectionView deleteItemsAtIndexPaths:@[[NSIndexPath indexPathForItem:(sender.tag - 20000) inSection:0]]]; for (NSInteger item = sender.tag - 20000; item <= _imageArray.count; item++) { PicCollectionViewCell *cell = (PicCollectionViewCell*)[self.collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForItem:item inSection:0]]; cell.closeButton.tag--; cell.profilePhoto.tag--; } [self changeCollectionViewHeight];}#pragma mark - 改变view，collectionView高度- (void)changeCollectionViewHeight{ NSInteger col_count = (IS_IPAD)?5:4; self.collectionView.size = CGSizeMake(COLLECTION_VIEW_WiDTH,SCREEN_HEIGHT * 0.1 * ((int)_imageArray.count/col_count +1)+SCREEN_HEIGHT * 0.005); //启动代理 NSInteger row = (int)_imageArray.count/col_count +1; [self.delegate changeViewHeight:row];}- (void)closeImageBtnClick{ [UIView animateWithDuration:0.5 animations:^{ [zoomImageView removeFromSuperview]; }];}//添加图片-(void)addImage:(UIImage *)image{ [self.imageArray addObject:image]; [self.collectionView reloadData];}//寻找当前view的VC- (UIViewController *)viewController { for (UIView* next = [self superview]; next; next = next.superview) { UIResponder *nextResponder = [next nextResponder]; if ([nextResponder isKindOfClass:[UIViewController class]]) { return (UIViewController *)nextResponder; } } return nil;}@endpicCollectionViewCell
#import <UIKit/UIKit.h>@interface PicCollectionViewCell : UICollectionViewCell@property (strong, nonatomic) UIImageView *profilePhoto;@property (strong, nonatomic) UIButton *closeButton;@property(nonatomic,strong) UIImageView *BigImageView;/** 查看大图 */- (void)setBigImageViewWithImage:(UIImage *)image;@end#import "PicCollectionViewCell.h"@implementation PicCollectionViewCell- (instancetype)initWithFrame:(CGRect)frame{ self = [super initWithFrame:frame]; if (self) { [self imageViewInit]; [self closeBtnInit]; } return self;}- (UIImageView *)imageViewInit{ if (!_profilePhoto) { _profilePhoto = [[UIImageView alloc]initWithFrame:CGRectMake(0, 5, self.frame.size.width - 5, self.frame.size.height - 5)];// [_profilePhoto setBackgroundColor:MF_ColorFromRGBA2(0xf1f2f3, 1)]; [self addSubview:_profilePhoto]; } return _profilePhoto;}- (UIButton *)closeBtnInit{ if (!_closeButton) { _closeButton = [[UIButton alloc]initWithFrame:CGRectMake(self.frame.size.width - 20, 0, 20, 20)];// [_closeButton setBackgroundColor:[UIColor redColor]]; [_closeButton setBackgroundImage:[UIImage imageNamed:@"close"] forState:UIControlStateNormal]; [self addSubview:_closeButton]; } return _closeButton;}- (void)setBigImageViewWithImage:(UIImage *)image{ if (_BigImageView) { //如果大图正在显示，还原小图 _BigImageView.frame = _profilePhoto.frame; _BigImageView.image = image; }else{ _BigImageView = [[UIImageView alloc] initWithImage:image]; _BigImageView.frame = _profilePhoto.frame; [self insertSubview:_BigImageView atIndex:0]; } _BigImageView.contentMode = UIViewContentModeScaleToFill;}@endzoomImageScrollView
#import <UIKit/UIKit.h>@interface ZoomImageScrollView : UIScrollView<UIScrollViewDelegate,UIGestureRecognizerDelegate>{ BOOL flag;}@property (nonatomic, strong) UIImageView *imageView;@end#import "ZoomImageScrollView.h"#define MRScreenWidth CGRectGetWidth([UIScreen mainScreen].applicationFrame)#define MRScreenHeight CGRectGetHeight([UIScreen mainScreen].applicationFrame)@interface ZoomImageScrollView (Utility)- (CGRect)zoomRectForScale:(CGFloat)scale withCenter:(CGPoint)center;@end@implementation ZoomImageScrollView- (id)initWithFrame:(CGRect)frame{ self = [super initWithFrame:frame]; if (self) { // Initialization code self.delegate = self; self.frame = CGRectMake(frame.origin.x, frame.origin.y, frame.size.width, frame.size.height); self.showsHorizontalScrollIndicator = NO; self.showsVerticalScrollIndicator = NO; flag = NO; [self initImageView]; } return self;}- (void)initImageView{ _imageView = [[UIImageView alloc]init]; // [imageView setBackgroundColor:[UIColor blueColor]]; // [self setBackgroundColor:[UIColor yellowColor]]; // The imageView can be zoomed largest size _imageView.frame = CGRectMake(0, 0, self.frame.size.width * 2.5, self.frame.size.height * 2.5); _imageView.userInteractionEnabled = YES; [self addSubview:_imageView]; // Add gesture,double tap zoom imageView. UITapGestureRecognizer *doubleTapGesture = [[UITapGestureRecognizer alloc] initWithTarget:self action:@selector(handleDoubleTap:)]; [doubleTapGesture setNumberOfTapsRequired:2]; [doubleTapGesture setNumberOfTouchesRequired:1]; doubleTapGesture.delegate = self; //[_imageView addGestureRecognizer:doubleTapGesture]; CGFloat minimumScale = self.frame.size.width / _imageView.frame.size.width; [self setMinimumZoomScale:minimumScale]; [self setZoomScale:minimumScale];}#pragma mark - Zoom methods- (void)handleDoubleTap:(UIGestureRecognizer *)gesture{ if (flag==NO) { _imageView.contentMode = UIViewContentModeCenter; flag=YES; if (_imageView.image.size.height>0) { _imageView.frame =CGRectMake(0, 0, _imageView.image.size.width*self.zoomScale, _imageView.image.size.height*self.zoomScale); } }else{ _imageView.contentMode = UIViewContentModeScaleAspectFit; _imageView.frame = CGRectMake(0, 0, self.frame.size.width * 2.5*self.zoomScale, self.frame.size.height * 2.5*self.zoomScale); flag=NO; } CGFloat scrollViewHeight = 0.0f; CGFloat scrollViewWidth = 0.0f; for (UIView* view in self.subviews){ scrollViewHeight += view.frame.size.height; scrollViewWidth +=view.frame.size.width; } // [self setContentSize:(CGSizeMake(scrollViewWidth*(1-self.zoomScale), scrollViewHeight*(1-self.zoomScale)))]; CGRect zoomRect = [self zoomRectForScale:(1-self.zoomScale) withCenter:[gesture locationInView:gesture.view]]; [self zoomToRect:zoomRect animated:YES]; // [imageView setCenter:CGPointMake((self.contentSize.width-imageView.frame.size.width)/2+imageView.frame.size.width, (self.contentSize.height-imageView.frame.size.height)/2+imageView.frame.size.height)]; // [self setContentOffset:CGPointMake(self.contentSize.width/2, MRScreenHeight/2)];}- (CGRect)zoomRectForScale:(CGFloat)scale withCenter:(CGPoint)center{ if (0 == scale) { scale = 0.1; } CGRect zoomRect; zoomRect.size.height = self.frame.size.height / scale; zoomRect.size.width = self.frame.size.width / scale; zoomRect.origin.x = zoomRect.size.width*2.5/2 - (zoomRect.size.width / 2.0); zoomRect.origin.y = self.frame.size.height*2.5/2 - (zoomRect.size.height / 2.0); NSLog(@"--%lf,%lf",center.x,center.y); return zoomRect;}#pragma mark - UIScrollViewDelegate- (UIView *)viewForZoomingInScrollView:(UIScrollView *)scrollView{ return _imageView;}- (void)scrollViewDidEndZooming:(UIScrollView *)scrollView withView:(UIView *)view atScale:(CGFloat)scale{ [scrollView setZoomScale:scale animated:NO];}- (void)scrollViewDidZoom:(UIScrollView *)scrollView{ CGFloat offsetX = (self.bounds.size.width > self.contentSize.width)?(self.bounds.size.width - self.contentSize.width) * 0.5 : 0.0; CGFloat offsetY = ((self.bounds.size.height) > self.contentSize.height)?((self.bounds.size.height) - self.contentSize.height) * 0.5 : 0.0; // self.center = CGPointMake(self.contentSize.width * 0.5 + offsetX,self.contentSize.height * 0.5 + offsetY); _imageView.center = CGPointMake(scrollView.contentSize.width * 0.5 + offsetX, scrollView.contentSize.height * 0.5 + offsetY);}@end阅读全文
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