IOS开发相册图片多选和删除的功能

移动开发 得得之家
之前小编有和大家分享过一篇关于从相册选取单张照片的文章，那么下面这篇文章跟大家分享下如何相册多图选择和删除，以及包括拍照功能，有需要的可以参考学习，下面来一起看看吧。

照例先上效果图

本次用的第三方框架做这个，但是需要考虑的地方也比较多，怎么把拍照和相册选取结合、删除照片后添加新照片时候的相册状态等等，所有的改变都是在操作数组。还需考虑图片的压缩上传。

本次用的第三方框架为：QBImagePickerController

按照惯例，上代码，本次代码较多

第一个控制器 .h里没啥代码


#import "RRZShowEditViewController.h"
#import "RRZSendShowTextCell.h"
#import "RRZSendShowImageCell.h"
#import "QBImagePickerController.h"
#import "ShowEditItem.h"

static NSString *sendShowTextCellID = @"SendShowTextCellID";
static NSString *sendShowImageCellID = @"SendShowImageCellID";

@interface RRZShowEditViewController ()<UITableViewDataSource, UITableViewDelegate, UINavigationControllerDelegate, UIImagePickerControllerDelegate, UIScrollViewDelegate,UIActionSheetDelegate,QBImagePickerControllerDelegate>

@property (strong, nonatomic) UITableView *myTableView;
/** model*/
@property (strong, nonatomic) ShowEditItem *showEditItem;
/** textView的text*/
@property (strong, nonatomic) NSString *valueStr;
/** 文本输入*/
@property (weak, nonatomic) NumberofwordsTextView *textView;

@property (strong, nonatomic) QBImagePickerController *imagePickerController;

@end

@implementation RRZShowEditViewController

-(ShowEditItem *)showEditItem{
  if (!_showEditItem) {
    _showEditItem = [[ShowEditItem alloc]init];
    _showEditItem.selectedImages = @[].mutableCopy;
    _showEditItem.selectedAssetURLs = @[].mutableCopy;
  }
  return _showEditItem;
}

-(QBImagePickerController *)imagePickerController{
  if (!_imagePickerController) {
    _imagePickerController = [[QBImagePickerController alloc] init];
    _imagePickerController.filterType = QBImagePickerControllerFilterTypePhotos;
    _imagePickerController.delegate = self;
    _imagePickerController.allowsMultipleSelection = YES;
    _imagePickerController.maximumNumberOfSelection = 9;
  }
  [_imagePickerController.selectedAssetURLs removeAllObjects];
  [_imagePickerController.selectedAssetURLs addObjectsFromArray:self.showEditItem.selectedAssetURLs];

  return _imagePickerController;
}

-(void)viewWillAppear:(BOOL)animated{
  [super viewWillAppear:animated];
}

-(void)viewDidAppear:(BOOL)animated{
  [super viewDidAppear:animated];
}

- (void)viewDidLoad {
  [super viewDidLoad];

  self.title = @"晒一晒";
  [self setupTabelView];
  [self setupNavItem];
}

-(void)setupNavItem{

  UIBarButtonItem *rightItem = [UIBarButtonItem itemWithTitle:@"发布" highTitle:nil target:self action:@selector(sendClick) norColor:NavItemColor highColor:RGB_COLOR(200, 200, 200)];
  self.navigationItem.rightBarButtonItem = rightItem;
}

// 压缩图片
- (NSData *)resetSizeOfImageData:(UIImage *)source_image maxSize:(NSInteger)maxSize
{
  //先调整分辨率
  CGSize newSize = CGSizeMake(source_image.size.width, source_image.size.height);

  CGFloat tempHeight = newSize.height / 1024;
  CGFloat tempWidth = newSize.width / 1024;

  if (tempWidth > 1.0 && tempWidth > tempHeight) {
    newSize = CGSizeMake(source_image.size.width / tempWidth, source_image.size.height / tempWidth);
  }
  else if (tempHeight > 1.0 && tempWidth < tempHeight){
    newSize = CGSizeMake(source_image.size.width / tempHeight, source_image.size.height / tempHeight);
  }

  UIGraphicsBeginImageContext(newSize);
  [source_image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
  UIImage *newImage = UIGraphicsGetImageFromCurrentImageContext();
  UIGraphicsEndImageContext();

  //调整大小
  NSData *imageData;
  if (UIImagePNGRepresentation(newImage)) {
    imageData = UIImagePNGRepresentation(newImage);
  }else{
    imageData = UIImageJPEGRepresentation(newImage, 0.5);
  }

  NSUInteger sizeOrigin = [imageData length];
  NSUInteger sizeOriginKB = sizeOrigin / 1024;
  if (sizeOriginKB > maxSize) {
    NSData *finallImageData = UIImageJPEGRepresentation(newImage,0.50);
    return finallImageData;
  }

  return imageData;
}

-(void)sendClick{

  [self.view endEditing:YES];

  [HUDController showProgressLabel:@""];

  NSString *textStr = self.textView.text;
  textStr = [textStr stringByTrimmingCharactersInSet:[NSCharacterSet whitespaceCharacterSet]];

  if (textStr.length > 0 || self.showEditItem.selectedImages.count > 0) {
    DLog(@"发表晒一晒");

    NSMutableArray *tempImages = [[NSMutableArray alloc]init];
    for (int i = 0; i < self.showEditItem.selectedImages.count; i++) {
      UIImage *tempImage = self.showEditItem.selectedImages[i];

      NSData *imgData = [self resetSizeOfImageData:tempImage maxSize:150];
      tempImage = [UIImage imageWithData:imgData];

      [tempImages addObject:tempImage];
    }


    [[RRZNetworkController sharedController]sendShowInfoByRemark:self.textView.text myfiles:tempImages success:^(NSDictionary *data) {

      NSString *code = data[@"code"];
      if ([code isEqualToString:@"success"]) {
        [HUDController hideHUDWithText:@"发表成功"];

        if (_sendSuccessBlock) {
          _sendSuccessBlock();
        }

        [self.navigationController popViewControllerAnimated:YES];
      }else{
        [HUDController hideHUD];
        NSString *message = data[@"message"];
        if (message.length > 30) {
          message = @"上传失败";
        }
        UIAlertView *alertView = [[UIAlertView alloc]initWithTitle:nil message:message delegate:nil cancelButtonTitle:@"确认" otherButtonTitles:nil, nil];
        [alertView show];
      }

    } failure:^(NSDictionary *error) {

      [HUDController hideHUDWithText:NetworkError];
    }];
  }else{
    [HUDController hideHUDWithText:@"文字或图片不能为空"];
  }

}

-(void)setupTabelView{
  //  添加myTableView
  _myTableView = ({
    UITableView *tableView = [[UITableView alloc] initWithFrame:self.view.bounds style:UITableViewStylePlain];
    tableView.backgroundColor = [UIColor clearColor];
    tableView.dataSource = self;
    tableView.delegate = self;
    tableView.separatorStyle = UITableViewCellSeparatorStyleNone;
    [tableView registerClass:[RRZSendShowTextCell class] forCellReuseIdentifier:sendShowTextCellID];
    [tableView registerClass:[RRZSendShowImageCell class] forCellReuseIdentifier:sendShowImageCellID];
    [self.view addSubview:tableView];
    [tableView mas_makeConstraints:^(MASConstraintMaker *make) {
      make.edges.equalTo(self.view);
    }];
    tableView;
  });
}

#pragma mark - UITableViewDelegate
-(NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
  return 2;
}

-(UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{

  if (indexPath.row == 0) {
    RRZSendShowTextCell *cell = [tableView dequeueReusableCellWithIdentifier:sendShowTextCellID];
    self.textView = cell.numberTextView;
//    cell.textValueChangedBlock = ^(NSString *valueStr){
//      weakSelf.valueStr = valueStr;
//    };
    return cell;
  }else{
    RRZSendShowImageCell *cell = [tableView dequeueReusableCellWithIdentifier:sendShowImageCellID];
    cell.item = self.showEditItem;
    __weak typeof(self) weakSelf = self;
    cell.addPicturesBlock = ^(){
      [weakSelf showActionForPhoto];
    };
    cell.deleteImageBlock = ^(ShowEditItem *item){
      weakSelf.showEditItem = item;
      [weakSelf.myTableView reloadData];
    };
    return cell;
  }
}

-(CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{
  if (indexPath.row == 0) {
    return 200;
  }else{
    return 300;
  }
}

#pragma mark UIActionSheet M
- (void)showActionForPhoto{
  UIActionSheet *actionSheet = [[UIActionSheet alloc]initWithTitle:nil delegate:self cancelButtonTitle:@"取消" destructiveButtonTitle:nil otherButtonTitles:@"拍照",@"从相册选取", nil];
  [actionSheet showInView:self.view];
}

#pragma mark - UIActionSheetDelegate
-(void)actionSheet:(UIActionSheet *)actionSheet clickedButtonAtIndex:(NSInteger)buttonIndex{
  if (buttonIndex == 0) {
    DLog(@"拍照");
    if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {
      UIAlertView *alert= [[UIAlertView alloc] initWithTitle:nil message:@"该设备不支持拍照" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:NULL];
      [alert show];
    }else{
      UIImagePickerController *picker = [[UIImagePickerController alloc] init];
      picker.delegate = self;
      picker.allowsEditing = NO;//设置可编辑
      picker.sourceType = UIImagePickerControllerSourceTypeCamera;
      [self presentViewController:picker animated:YES completion:nil];//进入照相界面
    }
  }else if (buttonIndex == 1){
    DLog(@"相册");
    if (![UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypePhotoLibrary]) {
      UIAlertView *alert= [[UIAlertView alloc] initWithTitle:nil message:@"该设备不支持从相册选取文件" delegate:self cancelButtonTitle:@"确定" otherButtonTitles:NULL];
      [alert show];
    }else{

      UINavigationController *navigationController = [[BaseNavigationController alloc] initWithRootViewController:self.imagePickerController];
      [self presentViewController:navigationController animated:YES completion:NULL];
    }
  }
}

#pragma mark UIImagePickerControllerDelegate
// 拍照回调
- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info{
  UIImage *pickerImage = [info objectForKey:UIImagePickerControllerOriginalImage];
  [self.showEditItem.selectedImages addObject:pickerImage];
  ALAssetsLibrary *assetsLibrary = [[ALAssetsLibrary alloc] init];
  [assetsLibrary writeImageToSavedPhotosAlbum:[pickerImage CGImage] orientation:(ALAssetOrientation)pickerImage.imageOrientation completionBlock:^(NSURL *assetURL, NSError *error) {
    [self.showEditItem.selectedAssetURLs addObject:assetURL];
//    [self.showEditItem addASelectedAssetURL:assetURL];
    [self.myTableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:[NSIndexPath indexPathForRow:1 inSection:0]] withRowAnimation:UITableViewRowAnimationFade];
  }];
  [picker dismissViewControllerAnimated:YES completion:^{}];
}

- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker{
  [picker dismissViewControllerAnimated:YES completion:nil];
}

#pragma mark QBImagePickerControllerDelegate
//相册回调
- (void)qb_imagePickerController:(QBImagePickerController *)imagePickerController didSelectAssets:(NSArray *)assets{
  [self.showEditItem.selectedImages removeAllObjects];

  NSMutableArray *selectedAssetURLs = [NSMutableArray new];
  [imagePickerController.selectedAssetURLs enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
    [selectedAssetURLs addObject:obj];
  }];
  self.showEditItem.selectedAssetURLs = selectedAssetURLs;

  for (int i = 0; i < assets.count; i++) {
    ALAsset *asset = assets[i];
    UIImage *tempImg = [UIImage imageWithCGImage:asset.defaultRepresentation.fullScreenImage];
    [self.showEditItem.selectedImages addObject:tempImg];
  }
  @weakify(self);
  dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
    self.showEditItem.selectedAssetURLs = selectedAssetURLs;
    dispatch_async(dispatch_get_main_queue(), ^{
      @strongify(self);
      [self.myTableView reloadRowsAtIndexPaths:[NSArray arrayWithObject:[NSIndexPath indexPathForRow:1 inSection:0]] withRowAnimation:UITableViewRowAnimationFade];
    });
  });
  [self dismissViewControllerAnimated:YES completion:nil];
}
- (void)qb_imagePickerControllerDidCancel:(QBImagePickerController *)imagePickerController{
  [self dismissViewControllerAnimated:YES completion:nil];
}

#pragma mark - scrollView 
// 滚动结束编辑 收起键盘
- (void)scrollViewWillBeginDragging:(UIScrollView *)scrollView{
  if (scrollView == self.myTableView) {
    [self.view endEditing:YES];
  }
}

- (void)dealloc
{
  _myTableView.delegate = nil;
  _myTableView.dataSource = nil;
}

@end

第二个控制器 .h


#import <UIKit/UIKit.h>
#import "NumberofwordsTextView.h"

@interface RRZSendShowTextCell : UITableViewCell

@property (weak, nonatomic) NumberofwordsTextView *numberTextView;

@end

第二个控制器 .m


#define kTweetContentCell_ContentFont [UIFont systemFontOfSize:16]

#import "RRZSendShowTextCell.h"

@interface RRZSendShowTextCell()

@end

@implementation RRZSendShowTextCell

- (void)awakeFromNib {
  [super awakeFromNib];
  // Initialization code
  self.selectionStyle = UITableViewCellSelectionStyleNone;
}

- (id)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier
{
  self = [super initWithStyle:style reuseIdentifier:reuseIdentifier];
  if (self) {

    NumberofwordsTextView *numberTextView = [[NumberofwordsTextView alloc] init];
    numberTextView.frame = CGRectMake(7, 7, SCREEN_WIDTH-7*2, 180);
    numberTextView.wordsMaxNumer = 300;
    numberTextView.placeHolder = @"写点什么来晒一晒吧...";
    numberTextView.textFont = [UIFont systemFontOfSize:14];
    [self addSubview:numberTextView];
    self.numberTextView = numberTextView;
  }
  return self;
}

@end

第三个 .h


#import <UIKit/UIKit.h>
#import "ShowEditItem.h"

@interface RRZSendShowImageCell : UITableViewCell

@property (copy, nonatomic) void (^addPicturesBlock)();
@property (copy, nonatomic) void (^deleteImageBlock)(ShowEditItem *toDelete);
@property (nonatomic,strong) ShowEditItem *item;

@end
.m

#define kShowImageCCell_Width floorf((SCREEN_WIDTH - 15*2- 10*3)/4)

#import "RRZSendShowImageCell.h"
#import "RRZShowEditImageCell.h"
#import "UICustomCollectionView.h"

static NSString *cellID = @"RRZShowImageCCellID";
@interface RRZSendShowImageCell()<UICollectionViewDelegate,UICollectionViewDataSource>

@property (strong, nonatomic) UICustomCollectionView *mediaView;
@property (strong, nonatomic) NSMutableDictionary *imageViewsDict;
/** <#注释#>*/
@property (strong, nonatomic) NSArray *imgs;
/** <#注释#>*/
@property (weak, nonatomic) UIButton *deleteBtn;

@end

@implementation RRZSendShowImageCell

-(instancetype)initWithStyle:(UITableViewCellStyle)style reuseIdentifier:(NSString *)reuseIdentifier{
  if (self = [super initWithStyle:style reuseIdentifier:reuseIdentifier]) {
    self.height = 300;
    [self setupCollectionView];
    self.selectionStyle = UITableViewCellSelectionStyleNone;

    UILabel *label = [[UILabel alloc]initWithFrame:CGRectMake(10, 0, SCREEN_WIDTH - 20, 1)];
    label.backgroundColor = RGB_COLOR(240, 240, 240);
    [self.contentView addSubview:label];
  }
  return self;
}

-(void)setupCollectionView{

  UICollectionViewFlowLayout *layout = [[UICollectionViewFlowLayout alloc]init];
  layout.itemSize = CGSizeMake(kShowImageCCell_Width, kShowImageCCell_Width);
  self.mediaView = [[UICustomCollectionView alloc]initWithFrame:CGRectMake(15, 10, SCREEN_WIDTH - 2 * 15, 280) collectionViewLayout:layout];
  self.mediaView.scrollEnabled = NO;
  [self.mediaView setBackgroundColor:[UIColor clearColor]];
  [self.mediaView registerNib:[UINib nibWithNibName:NSStringFromClass([RRZShowEditImageCell class]) bundle:nil] forCellWithReuseIdentifier:cellID];
  self.mediaView.dataSource = self;
  self.mediaView.delegate = self;
  [self.contentView addSubview:self.mediaView];
}

-(void)setItem:(ShowEditItem *)item{
  _item = item;

  [self.mediaView reloadData];
}

#pragma mark - UICollectionViewDelegate
-(NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section{
  NSInteger num = self.item.selectedImages.count;
  return num < 9? num+ 1: num;
}

-(UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath{
  RRZShowEditImageCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:cellID forIndexPath:indexPath];
  if (indexPath.row < self.item.selectedImages.count) {
    cell.img = self.item.selectedImages[indexPath.row];
  }else{
    cell.img = nil;
  }
  cell.deleteBtn.tag = indexPath.row;
  [cell.deleteBtn addTarget:self action:@selector(deleteBtnClick:) forControlEvents:UIControlEventTouchUpInside];
  self.deleteBtn = cell.deleteBtn;
  return cell;
}

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

  if (indexPath.row == self.item.selectedAssetURLs.count || indexPath.row == self.item.selectedImages.count) {
    if (_addPicturesBlock) {
      _addPicturesBlock();
    }
  }
}

-(void)deleteBtnClick:(UIButton *)btn{
  NSInteger index = btn.tag;
  [self.item.selectedImages removeObjectAtIndex:index];
  [self.item.selectedAssetURLs removeObjectAtIndex:index];
  if (_deleteImageBlock) {
    _deleteImageBlock(_item);
  }
}

@end

RRZShowEditImageCell.h 就不写了，就是自定义一个UICollectionViewCell

NumberofwordsTextView 在文中也用到了，就不贴代码了

总结

以上就是从相机或相册选取多图上传的代码实现，其他的描述就不写了，希望这篇文章对大家开发IOS能有一定的帮助，如果有疑问大家可以留言交流。

本站部分内容来源互联网,如果有图片或者内容侵犯您的权益请联系我们删除！

相关文档推荐

值得收藏的iOS开发常用代码块
这篇文章主要为大家详细介绍了iOS开发常用代码块,具有一定的参考价值，感兴趣的小伙伴们可以参考一下
分享一些iOS开发实用的小技巧
这篇文章主要给大家分享了一些iOS开发实用的小技巧，这些小技巧在大家开发iOS的时候还是相当实用，有需要的朋友们下面来一起看看吧。
iOS开发之UIPickerView实现城市选择器的步骤详解
这篇文章给大家介绍iOS利用控件UIPickerView实现城市选择器的效果，选择城市这一功能相信在大家日常开发的时候经常遇见，下面就来看看详细的实现过程，有需要的可以参考借鉴。
iOS开发之枚举用法小结
大家都知道枚举是C语言中的一种基本数据类型,是一个被命名的整型常量的集合,它不参与内存的占用和释放,我们在开发中使用枚举的目的只有一个,那就是为了增加代码的可读性。下面就来来看看在iOS中枚举的用法，有需要的朋友们可以看看。
iOS开发之UIScrollView控件详解
UIScrollView是一个非常重要的控件,其可以展示比设备屏幕更大区域的内容,我们可以通过手指滑动来查看内容视图的每一部分内容,也可以通过手指捏合来对内容视图进行缩放操作，我们每天开发中都不断显式或隐式地与UIScrollView打交道，下面给大家
iOS开发之适配iOS10以及Xcode8
这篇文章主要为大家详细介绍了iOS开发之适配iOS10以及Xcode8的相关资料,具有一定的参考价值，感兴趣的小伙伴们可以参考一下
前端开发编程语言数据库服务器系统/运维网络/安全移动开发建站教程网站运营
html vue validate adobe dreamweaver hbuilder vscode aptana editor dedecms ckeditor 编辑器 过滤 规则 织梦 图片本地化 模板 缩略图 图集 图片删除 ajax 瀑布流 无限下拉 cms 判断 sql 清除 tag 文档数 angularjs2 按钮 切换效果 vue3 thinkphp yii2 css 项目列表 li go Beego Buffalo Echo Gin Iris Revel 百度云 虚拟主机 pbootcms 伪静态 框架 排序 数据库 对象 字段 sql语句 php 字符串 分割 D3.js bootstrap 函数 svg selectAll 织梦cms 关键词 解析 采集 长度限制 日期 正则表达式