[IOS]从相册获取图片和视频进行上传

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[IOS]从相册获取图片和视频进行上传

Demo地址：http://download.csdn.net/detail/u012881779/8821955

从相册拿到图片和视频的地址，大概是这个样子，assets-library://asset/asset.MOV?id=02AEC5A4-E20B-4FAA-9B4E-A188DE467CD4&ext=MOV

这个地址无法直接用于上传，需要先将相册里的图片、视频copy到沙盒里，再使用这个新路径完成上传操作，上传完成后再清空数据即可。

图片比较好处理，可以直接在代理里面获取到数据直接转存，而视频就无法避免前面这个copy操作了。

下面的代码不全仅供参考

先导入框架：AssetsLibrary.framework

#import <AssetsLibrary/AssetsLibrary.h>
#import <AVFoundation/AVFoundation.h>
#import <CoreMedia/CoreMedia.h>
#import <MediaPlayer/MediaPlayer.h>
#import <CommonCrypto/CommonDigest.h>
#import "GMWorkSignTableViewCell.h"
#import "ZYQAssetPickerController.h"//照片存储路径
#define KOriginalPhotoImagePath   \
[[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:@"PhotoImages"]//视频存储路径
#define KVideoUrlPath   \
[[NSSearchPathForDirectoriesInDomains(NSCachesDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:@"VideoURL"]@interface GMWorkSignUpViewController : UIViewController<UITableViewDataSource,UITableViewDelegate,UINavigationControllerDelegate,ZYQAssetPickerControllerDelegate,UIScrollViewDelegate,UITextFieldDelegate>@property (strong, nonatomic)NSDictionary    *valueDict;
@property (weak, nonatomic) IBOutlet UITableView *tableView;
@property (weak, nonatomic) IBOutlet UIScrollView*scrollview;
@property (weak, nonatomic) IBOutlet UIView      *downTableView;
@property (strong, nonatomic) NSMutableArray     *infoDataArr;      //需要填写哪些资料
@property (strong, nonatomic) NSMutableArray     *leftDataArr;      //列表
@property (strong, nonatomic) NSMutableArray     *textFiledMarr;    //存储textfiled
@property (nonatomic) NSInteger uploadPicVideo;@end@implementation GMWorkSignUpViewController
//上传图片
- (IBAction)uploadPictureAction:(id)sender {_uploadPicVideo = 1;ZYQAssetPickerController *picker = [[ZYQAssetPickerController alloc] init];picker.maximumNumberOfSelection = 5;picker.assetsFilter = [ALAssetsFilter allPhotos];picker.showEmptyGroups=NO;picker.delegate=self;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:NULL];
}//上传视频
- (IBAction)uploadVideoAction:(id)sender {_uploadPicVideo = 2;ZYQAssetPickerController *picker = [[ZYQAssetPickerController alloc] init];picker.maximumNumberOfSelection = 1;picker.assetsFilter = [ALAssetsFilter allVideos];picker.showEmptyGroups=NO;picker.delegate=self;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:NULL];
}
#pragma mark - ZYQAssetPickerController Delegate
-(void)assetPickerController:(ZYQAssetPickerController *)picker didFinishPickingAssets:(NSArray *)assets{if(!_leftDataArr){_leftDataArr = [[NSMutableArray alloc] init];}for (int i=0; i<assets.count; i++) {ALAsset *asset=assets[i];ALAssetRepresentation * representation = asset.defaultRepresentation;//图片if(_uploadPicVideo == 1){UIImage *tempImg=[UIImage imageWithCGImage:representation.fullScreenImage];NSString *typeStr = @"图片";NSData *data;不能选择到图片的情况if(tempImg == nil){tempImg=[UIImage imageWithCGImage:asset.aspectRatioThumbnail];if(tempImg==nil){tempImg=[UIImage imageWithCGImage:asset.thumbnail];}data = UIImageJPEGRepresentation(tempImg, 1);NSString* picPath = [NSString stringWithFormat:@"%@/%@",KOriginalPhotoImagePath,representation.filename];NSMutableDictionary *objDict = [[NSMutableDictionary alloc] init];if(data){[objDict setObject:data forKey:@"header"];}[objDict setObject:picPath  forKey:@"path"];[objDict setObject:typeStr forKey:@"type"];[objDict setObject:representation.filename  forKey:@"name"];[_leftDataArr addObject:objDict];NSFileManager * fileManager = [NSFileManager defaultManager];if (![fileManager fileExistsAtPath:KOriginalPhotoImagePath]) {[fileManager createDirectoryAtPath:KOriginalPhotoImagePath withIntermediateDirectories:YES attributes:nil error:nil];}dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{NSString * imagePath = [KOriginalPhotoImagePath stringByAppendingPathComponent:representation.filename];[data writeToFile:imagePath atomically:YES];//UI的更新记得放在主线程,要不然等子线程排队过来都不知道什么年代了,会很慢的dispatch_async(dispatch_get_main_queue(), ^{[_tableView reloadData];});});}else{data = UIImageJPEGRepresentation(tempImg, 1);[self imageWithUrl:representation.url withFileName:representation.filename];NSString* picPath = [NSString stringWithFormat:@"%@/%@",KOriginalPhotoImagePath,representation.filename];NSMutableDictionary *objDict = [[NSMutableDictionary alloc] init];if(data){[objDict setObject:data forKey:@"header"];}[objDict setObject:picPath  forKey:@"path"];[objDict setObject:typeStr forKey:@"type"];[objDict setObject:representation.filename  forKey:@"name"];[_leftDataArr addObject:objDict];}//视频}else if (_uploadPicVideo == 2){UIImage *tempImg = [UIImage imageWithCGImage:asset.thumbnail];NSString *typeStr = @"视频";NSData *data = UIImageJPEGRepresentation(tempImg, 1);[self videoWithUrl:representation.url withFileName:representation.filename];NSString* picPath = [NSString stringWithFormat:@"%@/%@",KVideoUrlPath,representation.filename];NSMutableDictionary *objDict = [[NSMutableDictionary alloc] init];if(data){[objDict setObject:data forKey:@"header"];}[objDict setObject:picPath  forKey:@"path"];[objDict setObject:typeStr forKey:@"type"];[objDict setObject:representation.filename  forKey:@"name"];[_leftDataArr addObject:objDict];}}//视频tableview高度CGRect downRect = _downTableView.frame;downRect.size.height = 37+_leftDataArr.count*91;[_downTableView setFrame:downRect];[self adapterScrollViewAcion];
}// 将原始图片的URL转化为NSData数据,写入沙盒
- (void)imageWithUrl:(NSURL *)url withFileName:(NSString *)fileName
{// 进这个方法的时候也应该加判断,如果已经转化了的就不要调用这个方法了// 如何判断已经转化了,通过是否存在文件路径ALAssetsLibrary *assetLibrary = [[ALAssetsLibrary alloc] init];// 创建存放原始图的文件夹--->PhotoImagesNSFileManager * fileManager = [NSFileManager defaultManager];if (![fileManager fileExistsAtPath:KOriginalPhotoImagePath]) {[fileManager createDirectoryAtPath:KOriginalPhotoImagePath withIntermediateDirectories:YES attributes:nil error:nil];}dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{if (url) {// 主要方法[assetLibrary assetForURL:url resultBlock:^(ALAsset *asset) {ALAssetRepresentation *rep = [asset defaultRepresentation];Byte *buffer = (Byte*)malloc((unsigned long)rep.size);NSUInteger buffered = [rep getBytes:buffer fromOffset:0.0 length:((unsigned long)rep.size) error:nil];NSData *data = [NSData dataWithBytesNoCopy:buffer length:buffered freeWhenDone:YES];NSString * imagePath = [KOriginalPhotoImagePath stringByAppendingPathComponent:fileName];[data writeToFile:imagePath atomically:YES];// UI的更新记得放在主线程,要不然等子线程排队过来都不知道什么年代了,会很慢的dispatch_async(dispatch_get_main_queue(), ^{[_tableView reloadData];});} failureBlock:nil];}});
}// 将原始视频的URL转化为NSData数据,写入沙盒
- (void)videoWithUrl:(NSURL *)url withFileName:(NSString *)fileName
{// 解析一下,为什么视频不像图片一样一次性开辟本身大小的内存写入?// 想想,如果1个视频有1G多,难道直接开辟1G多的空间大小来写?// 创建存放原始图的文件夹--->VideoURLNSFileManager * fileManager = [NSFileManager defaultManager];if (![fileManager fileExistsAtPath:KVideoUrlPath]) {[fileManager createDirectoryAtPath:KVideoUrlPath withIntermediateDirectories:YES attributes:nil error:nil];}ALAssetsLibrary *assetLibrary = [[ALAssetsLibrary alloc] init];dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{if (url) {[assetLibrary assetForURL:url resultBlock:^(ALAsset *asset) {ALAssetRepresentation *rep = [asset defaultRepresentation];NSString * videoPath = [KVideoUrlPath stringByAppendingPathComponent:fileName];const char *cvideoPath = [videoPath UTF8String];FILE *file = fopen(cvideoPath, "a+");if (file) {const int bufferSize = 11024 * 1024;// 初始化一个1M的bufferByte *buffer = (Byte*)malloc(bufferSize);NSUInteger read = 0, offset = 0, written = 0;NSError* err = nil;if (rep.size != 0){do {read = [rep getBytes:buffer fromOffset:offset length:bufferSize error:&err];written = fwrite(buffer, sizeof(char), read, file);offset += read;} while (read != 0 && !err);//没到结尾，没出错，ok继续}// 释放缓冲区，关闭文件free(buffer);buffer = NULL;fclose(file);file = NULL;// UI的更新记得放在主线程,要不然等子线程排队过来都不知道什么年代了,会很慢的dispatch_async(dispatch_get_main_queue(), ^{[_tableView reloadData];});}} failureBlock:nil];}});
}@end

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