在collectionView中点击上传图片,点击item变大图或删除

//

//  ReleaseViewController.m

//  RoadVehicles

//

//  Created by ENERGY on 2018/3/8.

//  Copyright © 2018年 appleLJ. All rights reserved.

//

#import "FeelingViewController.h"

#import "IWTextView.h"

#import "MJPhotoBrowser.h"

#import "MJPhoto.h"

#import "ZYQAssetPickerController.h"

#import "TestCellCollectionViewCell.h"

@interface FeelingViewController ()

@property (nonatomic, strong)IWTextView * textView;

@property (nonatomic, strong)UICollectionView * collectionView;

@property (nonatomic,strong) NSMutableArray *dataArray; //数据源

@property (nonatomic,strong) NSMutableArray *dataImageArray; // 存储选择的图片(二进制)

@property (nonatomic,strong) NSMutableArray *dataImageWithStrArray; // 上传图片返回的图片地址

@end

@implementation FeelingViewController(networking)

@end

@implementation FeelingViewController

- (void)viewDidLoad{

    [super viewDidLoad];

    [self.view addSubview:self.textView];

    [self.view addSubview:self.collectionView];

}

- (IWTextView *)textView{

    if (!_textView) {

        _textView = [[IWTextView alloc] initWithFrame:CGRectMake(5/WIDTH_5S_SCALE, 5/WIDTH_5S_SCALE, SCREEN_WIDTH - 20/WIDTH_5S_SCALE, 100/WIDTH_5S_SCALE)];

        _textView.placeholder = @"这一刻心情……";

        _textView.font = DEF_FontSize_14;

    }return _textView;

}

- (UICollectionView *)collectionView{

    if (!_collectionView) {

        UILabel * titleLab = [[UILabel alloc] initWithFrame:CGRectMake(self.textView.left, self.textView.bottom + 10/WIDTH_5S_SCALE, self.textView.width, 20/WIDTH_5S_SCALE)];

        titleLab.text = @"上传图片(最多九张)";

        titleLab.font = [UIFont systemFontOfSize:14.0];

        titleLab.textColor = [UIColor blackColor];

        [self.view addSubview:titleLab];

        UICollectionViewFlowLayout * layout = [[UICollectionViewFlowLayout alloc] init];

        layout.minimumLineSpacing = 10/WIDTH_5S_SCALE;

        layout.minimumInteritemSpacing = 10/WIDTH_5S_SCALE;

        layout.itemSize = CGSizeMake(80/WIDTH_5S_SCALE, 80/WIDTH_5S_SCALE);

        layout.scrollDirection = UICollectionViewScrollDirectionHorizontal;

        _collectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, titleLab.bottom + 5/WIDTH_5S_SCALE, SCREEN_WIDTH, 100/WIDTH_5S_SCALE) collectionViewLayout:layout];

        _collectionView.delegate = self;

        _collectionView.dataSource = self;

        _collectionView.backgroundColor = [UIColor orangeColor];

        [_collectionView registerClass:[TestCellCollectionViewCell class] forCellWithReuseIdentifier:NSStringFromClass([TestCellCollectionViewCell class])];

        _collectionView.showsVerticalScrollIndicator = NO;

        _collectionView.showsHorizontalScrollIndicator = NO;


    }return _collectionView;

}

//打开相册选择照片

- (void)setupPhotoSelect{

    ZYQAssetPickerController * picker = [[ZYQAssetPickerController alloc] init];

    picker.maximumNumberOfSelection = 9-self.dataArray.count;;

    picker.delegate = self;

    picker.assetsFilter = [ALAssetsFilter allPhotos];

    picker.showEmptyGroups = NO;

    picker.selectionFilter = [NSPredicate predicateWithBlock:^BOOL(id evaluatedObject, NSDictionary *bindings){

        if ([[(ALAsset *)evaluatedObject valueForProperty:ALAssetPropertyType] isEqual:ALAssetTypeVideo]){

            NSTimeInterval duration = [[(ALAsset *)evaluatedObject valueForProperty:ALAssetPropertyDuration] doubleValue];

            return duration >= 5;

        } else {

            return YES;

        }

    }];

    [self presentViewController:picker animated:YES completion:nil];

}

//- (void)setUpPhotoBrower{

//    MJPhotoBrowser * photoBrower = [[MJPhotoBrowser alloc] init];

//

//}

- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{

    if (self.dataArray.count >8) {

        return 9;

    }

    return self.dataArray.count + 1;

}

- (__kindof UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{

    TestCellCollectionViewCell * cell = [collectionView dequeueReusableCellWithReuseIdentifier:NSStringFromClass([TestCellCollectionViewCell class]) forIndexPath:indexPath];

    if (indexPath.row != self.dataArray.count) {

        cell.img = self.dataArray[indexPath.row];

    }else{

        cell.img = nil;

    }

    cell.deleteImgBlock = ^(){

        [self.dataArray removeObjectAtIndex:indexPath.row];

        [self.collectionView reloadData];

    };

    return cell;

}

- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath{

    if (self.dataArray.count<9) {

        if (self.dataArray.count != 0) {

            if (indexPath.row == self.dataArray.count) {

//                [self presentViewController:picker animated:YES completion:nil];

                [self setupPhotoSelect];

            }else{

                //点击查看大图

                //1.创建图片浏览器

                MJPhotoBrowser *brower = [[MJPhotoBrowser alloc] init];

                //2.告诉图片浏览器显示所有的图片

                NSMutableArray *photos = [NSMutableArray array];

                for (int i = 0 ; i < self.dataArray.count; i++) {

                    //传递数据给浏览器

                    MJPhoto *mjPhoto = [[MJPhoto alloc] init];

                    mjPhoto.image = self.dataArray[i];

                    TestCellCollectionViewCell *cell = (TestCellCollectionViewCell*)[collectionView cellForItemAtIndexPath:[NSIndexPath indexPathForRow:i inSection:0]];

                    mjPhoto.srcImageView = cell.imageView; //设置来源哪一个UIImageView

                    [photos addObject:mjPhoto];

                }

                brower.photos = photos;

                brower.isShowDeleteButton = YES;

                brower.delegate = self;

                //3.设置默认显示的图片索引

                brower.currentPhotoIndex = indexPath.row;

                //4.显示浏览器

                [brower show];

            }

        }else{

            [self setupPhotoSelect];

        }

    }

}

//ZYQ代理方法

-(void)assetPickerController:(ZYQAssetPickerController *)picker didFinishPickingAssets:(NSArray *)assets{

    for (int i=0; i< assets.count; i++) {

        ALAsset * asset= assets[i];

        UIImage * tempImg = [UIImage imageWithCGImage:asset.defaultRepresentation.fullScreenImage];

        NSData * imageData;

        imageData = UIImageJPEGRepresentation(tempImg, 0.3);

        [self.dataImageWithStrArray addObject:imageData];

        //添加未压缩的图片

        [self.dataArray addObject:tempImg];

        dispatch_async(dispatch_get_main_queue(), ^{

            [self.collectionView reloadData];

            NSLog(@"图片添加成功%@",tempImg);

        });

        asset = nil;

    }

}

//brwoer代理方法

- (void)photoBrowser:(MJPhotoBrowser *)photoBrowser didDeletePhotoAtIndex:(NSInteger)index{

    [self.dataArray removeObjectAtIndex:index];

    [self.collectionView reloadData];

}

- (void)photoBrowser:(MJPhotoBrowser *)photoBrowser didChangedToPageAtIndex:(NSUInteger)index{


}

- (NSMutableArray *)dataArray{

    if (!_dataArray) {

        _dataArray = [NSMutableArray array].mutableCopy;

    }return _dataArray;

}

- (NSMutableArray *)dataImageWithStrArray{

    if (!_dataImageWithStrArray) {

        _dataImageWithStrArray = [NSMutableArray array].mutableCopy;

    }return _dataImageWithStrArray;

}

- (NSMutableArray *)dataImageArray{

    if (!_dataImageArray) {

        _dataImageArray = [NSMutableArray array].mutableCopy;

    }return _dataImageArray;

}

@end

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