这篇文章将为大家详细讲解有关怎么在iOS中实现从系统相册选取多张照片，文章内容质量较高，因此小编分享给大家做个参考，希望大家阅读完这篇文章后对相关知识有一定的了解。
1.pod导入
pod 'CTAssetsPickerController'
2.添加头文件
#import
3.添加delegate
4.实现
- (void)upLoading {
[PHPhotoLibraryrequestAuthorization:^(PHAuthorizationStatus status){
if (status !=PHAuthorizationStatusAuthorized)return;
dispatch_async(dispatch_get_main_queue(), ^{
CTAssetsPickerController *picker = [[CTAssetsPickerControlleralloc] init];
picker.delegate =self;
// 显示选择的索引
picker.showsSelectionIndex =YES;
// 设置相册的类型：相机胶卷 +自定义相册
picker.assetCollectionSubtypes =@[
@(PHAssetCollectionSubtypeSmartAlbumUserLibrary),
@(PHAssetCollectionSubtypeAlbumRegular)];
// 不需要显示空的相册
picker.showsEmptyAlbums =NO;
[selfpresentViewController:pickeranimated:YEScompletion:nil];
});
}];
}
-(BOOL)assetsPickerController:(CTAssetsPickerController *)picker shouldSelectAsset:(PHAsset *)asset
{
NSInteger max =9;
if (picker.selectedAssets.count >= max) {
UIAlertController *alert = [UIAlertControlleralertControllerWithTitle:@"提示"message:[NSStringstringWithFormat:@"最多选择%zd张图片", max] preferredStyle:UIAlertControllerStyleAlert];
[alert addAction:[UIAlertActionactionWithTitle:@"好的"style:UIAlertActionStyleDefaulthandler:nil]];
[picker presentViewController:alertanimated:YEScompletion:nil];
// 这里不能使用self来modal别的控制器，因为此时self.view不在window上
returnNO;
}
returnYES;
}
-(void)assetsPickerController:(CTAssetsPickerController *)picker didFinishPickingAssets:(NSArray *)assets
{
NSArray *array =NSSearchPathForDirectoriesInDomains(NSDocumentDirectory,NSUserDomainMask,YES);
NSString *documents = [arraylastObject];
NSString *documentPath = [documentsstringByAppendingPathComponent:@"arrayXML.xml"];
NSArray *dataArray = [NSArrayarrayWithArray:assets];
[dataArray writeToFile:documentPathatomically:YES];
NSArray *resultArray = [NSArrayarrayWithContentsOfFile:documentPath];
NSLog(@"%@", documentPath);
// 关闭图片选择界面
[picker dismissViewControllerAnimated:YEScompletion:nil];
// 遍历选择的所有图片
self.plCollection.photoArray = assets;
for (NSInteger i =0; i < assets.count; i++) {
// 基本配置
CGFloat scale = [UIScreenmainScreen].scale;
PHImageRequestOptions *options = [[PHImageRequestOptionsalloc] init];
options.resizeMode =PHImageRequestOptionsResizeModeExact;
options.deliveryMode =PHImageRequestOptionsDeliveryModeHighQualityFormat;
PHAsset *asset = assets[i];
CGSize size =CGSizeMake(asset.pixelWidth / scale, asset.pixelHeight / scale);
// // 获取图片
[[PHImageManagerdefaultManager] requestImageForAsset:assettargetSize:size contentMode:PHImageContentModeDefaultoptions:options resultHandler:^(UIImage *_Nullable result,NSDictionary *_Nullable info) {
NSData *imageData =UIImageJPEGRepresentation([selfimageWithImageSimple:resultscaledToSize:CGSizeMake(200,200)], 0.5);
[selfossUpload:imageData];
}];
}
}关于怎么在iOS中实现从系统相册选取多张照片就分享到这里了，希望以上内容可以对大家有一定的帮助，可以学到更多知识。如果觉得文章不错，可以把它分享出去让更多的人看到。
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