相册列表
2022-08-17 本文已影响0人
失忆的程序员
简单写个相册列表，自行扩展
权限设置别忘记了，在info中添加。【隐私访问】
super dev.jpg
.h
自己加个传选中的值
.m
//
#import "SelectPhotosViewController.h"
#import "PhotoCollectionViewCell.h"
#import <Masonry.h>
#import <Photos/Photos.h>
#define KHeaterCollectionViewCellWidth(section) (kScreenWidth - (section-1+2)*kFitWidth(10))/(section)
#define kScreenWidth [UIScreen mainScreen].bounds.size.width
#define kScreenHeight [UIScreen mainScreen].bounds.size.height
#define kFitHeight(height) (height)/(667.0 - 64) * (kScreenHeight - 64)
#define kFitWidth(width) (width)/375.0 * kScreenWidth
#define KModelCollectionViewCellIdentifier @"modelCollectionViewCellIdentifier"
@interface SelectPhotosViewController ()
<
UICollectionViewDelegate, UICollectionViewDataSource
>
@property (nonatomic, strong) UICollectionView *showPhotoCollectionView;
@property (nonatomic, strong) NSMutableArray *photoArray;
@end
@implementation SelectPhotosViewController
- (void)viewDidLoad {
[super viewDidLoad];
self.view.backgroundColor = [UIColor whiteColor];
self.photoArray = @[].mutableCopy;
[self initNav];
if (!_showPhotoCollectionView) {
[self.view addSubview:self.showPhotoCollectionView];
}
//[self getOriginalImages];
[self enumerateAssetsInAssetCollection:nil original:NO imageAndVideo:NO];
//[self enumerateAssetsInAssetCollection:nil original:NO imageAndVideo:YES];
}
- (void)initNav
{
// 在主线程异步加载，使下面的方法最后执行，防止其他的控件挡住了导航栏
dispatch_async(dispatch_get_main_queue(), ^{
// 隐藏系统导航栏
[self.navigationController setNavigationBarHidden:YES animated:NO];
// 创建假的导航栏
UIView *navView = [[UIView alloc] initWithFrame:CGRectMake(0, 0, [UIScreen mainScreen].bounds.size.width, 64)];
navView.backgroundColor = [UIColor colorWithRed:0.92 green:0.92 blue:0.92 alpha:1.0f];
[self.view addSubview:navView];
// 创建导航栏左按钮
UIButton *left= [UIButton buttonWithType:UIButtonTypeSystem];
left.frame = CGRectMake(20, 27, 30, 30);
[left setBackgroundImage:[UIImage imageNamed:@"Numberback_highlight"] forState:UIControlStateNormal];
[left addTarget:self action:@selector(preAction) forControlEvents:UIControlEventTouchUpInside];
[navView addSubview:left];
UILabel *titleLabel = [[UILabel alloc] initWithFrame:CGRectZero];
titleLabel.text = @"添加智能图标";
titleLabel.textColor = [UIColor colorWithRed:0.4 green:0.4 blue:0.4 alpha:1.0f];
titleLabel.frame = CGRectMake(left.frame.origin.x + left.frame.size.width + 20, 20, 150, 44);
[navView addSubview:titleLabel];
});
}
-(void)preAction
{
[self.navigationController popViewControllerAnimated:YES];
}
// MARK: -----
//- (void)getOriginalImages
//{
// dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
// // 获得所有的自定义相簿
// PHFetchResult<PHAssetCollection *> *assetCollections = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeAlbum subtype:PHAssetCollectionSubtypeAlbumRegular options:nil];
//// // 遍历所有的自定义相簿
//// for (PHAssetCollection *assetCollection in assetCollections) {
//// [self enumerateAssetsInAssetCollection:assetCollection original:YES];
//// }
//
// // 获得相机胶卷
// PHAssetCollection *cameraRoll = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum subtype:PHAssetCollectionSubtypeSmartAlbumUserLibrary options:nil].lastObject;
// // 遍历相机胶卷,获取大图
// [self enumerateAssetsInAssetCollection:cameraRoll original:YES];
// });
//}
//
//- (void)getThumbnailImages
//{
// dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
// // 获得所有的自定义相簿
// PHFetchResult<PHAssetCollection *> *assetCollections = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeAlbum subtype:PHAssetCollectionSubtypeAlbumRegular options:nil];
// // 遍历所有的自定义相簿
// for (PHAssetCollection *assetCollection in assetCollections) {
// [self enumerateAssetsInAssetCollection:assetCollection original:NO];
// }
// // 获得相机胶卷
// PHAssetCollection *cameraRoll = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum subtype:PHAssetCollectionSubtypeSmartAlbumUserLibrary options:nil].lastObject;
// [self enumerateAssetsInAssetCollection:cameraRoll original:NO];
// });
//}
/**
* 遍历相簿中的全部图片
* @param assetCollection 相簿
* @param original 是否要原图
*/
//- (void)enumerateAssetsInAssetCollection:(PHAssetCollection *)assetCollection original:(BOOL)original
//{
// NSLog(@"相簿名:%@", assetCollection.localizedTitle);
// __weak typeof(self) weakSelf = self;
//
// // 列出所有相册智能相册
// PHFetchResult *smartAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum subtype:PHAssetCollectionSubtypeAlbumRegular options:nil];
// // 列出所有用户创建的相册
// PHFetchResult *topLevelUserCollections = [PHCollectionList fetchTopLevelUserCollectionsWithOptions:nil];
// // 获取所有资源的集合，并按资源的创建时间排序
// PHFetchOptions *options = [[PHFetchOptions alloc] init];
// options.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"creationDate" ascending:YES]];
// PHFetchResult *assets = [PHAsset fetchAssetsWithOptions:options];
//
// PHImageManager *imageManager = [[PHImageManager alloc] init];
//
// for (int i = 0; i < assets.count; i++)
// {
// PHAsset *asset = assets[i];//[assets lastObject];
//
// switch (asset.mediaType) {
// case PHAssetMediaTypeUnknown: {
//
// } break;
// case PHAssetMediaTypeImage: {
//
// // 是否要原图
// CGSize size = original ? CGSizeMake(asset.pixelWidth, asset.pixelHeight) : CGSizeZero;
//
// // 从asset中获得图片
// [imageManager requestImageForAsset:asset targetSize:size contentMode:PHImageContentModeDefault options:nil resultHandler:^(UIImage * _Nullable result, NSDictionary * _Nullable info) {
// NSLog(@"%@", result);
// if (result) {
// original ? [weakSelf.photoArray addObject:result] : [weakSelf.photoArray addObject:result];
// } else {
// NSLog(@" ----------- ");
// }
// }];
// dispatch_async(dispatch_get_main_queue(), ^{
//
// [weakSelf.showPhotoCollectionView reloadData];
// weakSelf.showPhotoCollectionView.hidden = NO;
// [weakSelf scrollPositionBottom];
// });
// } break;
// case PHAssetMediaTypeVideo: {
//
// } break;
// case PHAssetMediaTypeAudio: {
//
// } break;
//
// default:
// break;
// }
// }
//
//}
/**
* 遍历相簿中的全部图片
* @param assetCollection 相簿
* @param original 是否要原图
*/
- (void)enumerateAssetsInAssetCollection:(PHAssetCollection *)assetCollection original:(BOOL)original imageAndVideo:(BOOL)imageAndVideo
{
NSLog(@"相簿名:%@", assetCollection.localizedTitle);
__weak typeof(self) weakSelf = self;
// 列出所有相册智能相册
PHFetchResult *smartAlbums = [PHAssetCollection fetchAssetCollectionsWithType:PHAssetCollectionTypeSmartAlbum subtype:PHAssetCollectionSubtypeAlbumRegular options:nil];
// 列出所有用户创建的相册
PHFetchResult *topLevelUserCollections = [PHCollectionList fetchTopLevelUserCollectionsWithOptions:nil];
//PHImageManager *imageManager = [[PHImageManager alloc] init];
PHImageManager *imageManager = [PHImageManager defaultManager];
// 获取所有资源的集合，并按资源的创建时间排序
PHFetchOptions *options = [[PHFetchOptions alloc] init];
options.sortDescriptors = @[[NSSortDescriptor sortDescriptorWithKey:@"creationDate" ascending:YES]];
PHFetchResult *assets = [PHAsset fetchAssetsWithOptions:options];
for (int i = 0; i < assets.count; i++)
{
PHAsset *phasset = assets[i];//[assets lastObject];
// 是否要原图
CGSize size = original ? CGSizeMake(phasset.pixelWidth, phasset.pixelHeight) : CGSizeZero;
if (imageAndVideo)
{
switch (phasset.mediaType) {
case PHAssetMediaTypeUnknown: {
} break;
case PHAssetMediaTypeImage: {
PHImageRequestOptions *roptions = [[PHImageRequestOptions alloc] init];
roptions.deliveryMode = PHImageRequestOptionsDeliveryModeOpportunistic;
roptions.networkAccessAllowed = YES; // 网络的
// 从asset中获得图片
[imageManager requestImageForAsset:phasset targetSize:size contentMode:PHImageContentModeDefault options:roptions resultHandler:^(UIImage * _Nullable result, NSDictionary * _Nullable info) {
NSLog(@"%@", result);
if (result) {
original ? [weakSelf.photoArray addObject:result] : [weakSelf.photoArray addObject:result];
} else {
NSLog(@" ----------- ");
}
}];
dispatch_async(dispatch_get_main_queue(), ^{
[weakSelf.showPhotoCollectionView reloadData];
weakSelf.showPhotoCollectionView.hidden = NO;
[weakSelf scrollPositionBottom];
});
} break;
case PHAssetMediaTypeVideo: {
} break;
case PHAssetMediaTypeAudio: {
} break;
default:
break;
}
}
else
{
switch (phasset.mediaType) {
case PHAssetMediaTypeUnknown: {
// NSLog(@" -------- PHAssetMediaTypeUnknown ");
} break;
case PHAssetMediaTypeImage: {
// NSLog(@" -------- PHAssetMediaTypeImage ");
} break;
case PHAssetMediaTypeVideo: {
// NSLog(@" -------- PHAssetMediaTypeVideo ");
PHVideoRequestOptions *roptions = [[PHVideoRequestOptions alloc] init];
roptions.deliveryMode = PHVideoRequestOptionsDeliveryModeAutomatic;
roptions.networkAccessAllowed = YES; // 网络的
[imageManager requestAVAssetForVideo:phasset options:roptions resultHandler:^(AVAsset * _Nullable asset, AVAudioMix * _Nullable audioMix, NSDictionary * _Nullable info) {
AVURLAsset *urlAsset = (AVURLAsset *)asset;
NSURL *url = urlAsset.URL;
//NSData *data = [NSData dataWithContentsOfURL:url];
NSLog(@"-----------data url -> %@", url);
if (urlAsset) {
CMTime time = [asset duration];
AVAssetImageGenerator *generator = [AVAssetImageGenerator assetImageGeneratorWithAsset:urlAsset];
generator.appliesPreferredTrackTransform = YES;
// 总帧数/展示的总数量
long long baseCount = time.value / time.timescale;
// 取出PHOTP_COUNT张图片,存放到数组，用于collectionview
//for (NSInteger i = 0; i < 1; i++)
//{ // 每隔baseCount帧取一帧存起来,一共
//}
NSError *error = nil;
// 每隔baseCount帧取一帧存起来,一共 ? 张, 当前获取第0张
CGImageRef img = [generator copyCGImageAtTime:CMTimeMake(0, time.timescale) actualTime:NULL error:&error];
{
UIImage *image = [UIImage imageWithCGImage:img];
[weakSelf.photoArray addObject:image];
NSLog(@" ----------------- 封面 image -> %@, 时长： %lld ", image, baseCount);
}
} else {
NSLog(@" ------------------> 走丢了！！！ ");
}
dispatch_async(dispatch_get_main_queue(), ^{
[weakSelf.showPhotoCollectionView reloadData];
weakSelf.showPhotoCollectionView.hidden = NO;
[weakSelf scrollPositionBottom];
});
}];
} break;
case PHAssetMediaTypeAudio: {
NSLog(@" -------- PHAssetMediaTypeAudio ");
} break;
default:
break;
}
}
}
}
#pragma mark - 滑到最底部
- (void)scrollPositionBottom
{
NSInteger section = [self.showPhotoCollectionView numberOfSections]; //有多少组
if (section<1) return; //无数据时不执行 要不会crash
NSInteger row = [self.showPhotoCollectionView numberOfItemsInSection:section-1]; //最后一组有多少行
if (row<1) return;
NSIndexPath *indexPath = [NSIndexPath indexPathForRow:row-1 inSection:section-1]; //取最后一行数据
[self.showPhotoCollectionView scrollToItemAtIndexPath:indexPath atScrollPosition:UICollectionViewScrollPositionBottom animated:YES];//滚动到最后一行
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
- (UICollectionView *)showPhotoCollectionView
{
if (!_showPhotoCollectionView) {
UICollectionViewFlowLayout *flowLayout = [[UICollectionViewFlowLayout alloc] init];
flowLayout.itemSize = CGSizeMake(KHeaterCollectionViewCellWidth(4.0), KHeaterCollectionViewCellWidth(4.0));
_showPhotoCollectionView = [[UICollectionView alloc] initWithFrame:CGRectMake(0, 64, kScreenWidth, kScreenHeight - 64) collectionViewLayout:flowLayout];
_showPhotoCollectionView.backgroundColor = [UIColor whiteColor];
_showPhotoCollectionView.contentInset = UIEdgeInsetsMake(10, 10, 10, 10);
_showPhotoCollectionView.delegate = self;
_showPhotoCollectionView.dataSource = self;
_showPhotoCollectionView.allowsSelection = YES;
[_showPhotoCollectionView registerClass:[PhotoCollectionViewCell class] forCellWithReuseIdentifier:KModelCollectionViewCellIdentifier];
_showPhotoCollectionView.hidden = YES;
}
return _showPhotoCollectionView;
}
#pragma mark --- UICollectionViewDelegate && UICollectionViewDataSource
- (NSInteger)collectionView:(UICollectionView *)collectionView numberOfItemsInSection:(NSInteger)section
{
return _photoArray.count;
}
- (UICollectionViewCell *)collectionView:(UICollectionView *)collectionView cellForItemAtIndexPath:(NSIndexPath *)indexPath
{
// * 自行创建 cell ，显示图片，扩展去吧
PhotoCollectionViewCell *cell = [collectionView dequeueReusableCellWithReuseIdentifier:KModelCollectionViewCellIdentifier forIndexPath:indexPath];
cell.iconImageView.image = _photoArray[indexPath.item];
cell.iconlb.text = [NSString stringWithFormat:@"第%ld张", (indexPath.row + 1)];
return cell;
}
- (void)collectionView:(UICollectionView *)collectionView didSelectItemAtIndexPath:(NSIndexPath *)indexPath
{
// if (_photoArray[indexPath.item]) {
// self.selectPhoto(_photoArray[indexPath.item]);
// }
// [self.navigationController popViewControllerAnimated:YES];
}
@end
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