关于iOS如何实现视频和图片的上传, 我们先理清下思路

思路:

#1. 如何获取图片?

#2. 如何获取视频?

#3. 如何把图片存到缓存路径中?

#4. 如何把视频存到缓存路径中?

#5. 如何上传?

 

接下来, 我们按照上面的思路一步一步实现

 

首先我们新建一个类, 用来储存每一个要上传的文件uploadModel.h

#import 
     
      @interface uploadModel : NSObject@property (nonatomic, strong) NSString *path;@property (nonatomic, strong) NSString *type;@property (nonatomic, strong) NSString *name;@property (nonatomic, assign) BOOL      isUploaded;@end
     

#1. 如何获取图片?

从相册选择 或者 拍照, 

这部分可以用UIImagePickerController来实现

代码如下:

- (void)actionPhoto {        UIAlertController *alertController  = \    [UIAlertController alertControllerWithTitle:@""                                        message:@"上传照片"                                 preferredStyle:UIAlertControllerStyleActionSheet];        UIAlertAction *photoAction  = \    [UIAlertAction actionWithTitle:@"从相册选择"                             style:UIAlertActionStyleDefault                           handler:^(UIAlertAction * _Nonnull action) {                                       NSLog(@"从相册选择");                               self.imagePicker.sourceType    = UIImagePickerControllerSourceTypePhotoLibrary;                               self.imagePicker.mediaTypes = @[(NSString *)kUTTypeImage];                               self.imagePicker.allowsEditing = YES;                                                              [self presentViewController:self.imagePicker                                                  animated:YES                                                completion:nil];                                                          }];        UIAlertAction *cameraAction = \    [UIAlertAction actionWithTitle:@"拍照"                             style:UIAlertActionStyleDefault                           handler:^(UIAlertAction * _Nonnull action) {                                       NSLog(@"拍照");                               if ([UIImagePickerController isSourceTypeAvailable:UIImagePickerControllerSourceTypeCamera]) {                                                                      self.imagePicker.sourceType        = UIImagePickerControllerSourceTypeCamera;                                   self.imagePicker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModePhoto;                                   self.imagePicker.cameraDevice      = UIImagePickerControllerCameraDeviceRear;                                   self.imagePicker.allowsEditing     = YES;                                                                      [self presentViewController:self.imagePicker                                                      animated:YES                                                    completion:nil];                               }                           }];        UIAlertAction *cancelAction = \    [UIAlertAction actionWithTitle:@"取消"                             style:UIAlertActionStyleCancel                           handler:^(UIAlertAction * _Nonnull action) {                                       NSLog(@"取消");                           }];        [alertController addAction:photoAction];    [alertController addAction:cameraAction];    [alertController addAction:cancelAction];        [self presentViewController:alertController animated:YES completion:nil];}

#2. 如果获取视频?

从相册选择 或者 拍摄

这部分也可以用UIImagePickerController来实现

代码:

- (void)actionVideo {        UIAlertController *alertController = \    [UIAlertController alertControllerWithTitle:@""                                        message:@"上传视频"                                 preferredStyle:UIAlertControllerStyleActionSheet];        UIAlertAction *photoAction = \    [UIAlertAction actionWithTitle:@"从视频库选择"                             style:UIAlertActionStyleDefault                           handler:^(UIAlertAction * _Nonnull action) {                                       NSLog(@"从视频库选择");                               self.imagePicker.sourceType = UIImagePickerControllerSourceTypePhotoLibrary;                               self.imagePicker.mediaTypes = @[(NSString *)kUTTypeMovie];                               self.imagePicker.allowsEditing = NO;                                                              [self presentViewController:self.imagePicker animated:YES completion:nil];                           }];        UIAlertAction *cameraAction = \    [UIAlertAction actionWithTitle:@"录像"                             style:UIAlertActionStyleDefault                           handler:^(UIAlertAction * _Nonnull action) {                                       NSLog(@"录像");                               self.imagePicker.sourceType = UIImagePickerControllerSourceTypeCamera;                               self.imagePicker.cameraDevice = UIImagePickerControllerCameraDeviceRear;                               self.imagePicker.mediaTypes = [UIImagePickerController availableMediaTypesForSourceType:UIImagePickerControllerSourceTypeCamera];                               self.imagePicker.videoQuality = UIImagePickerControllerQualityType640x480;                               self.imagePicker.cameraCaptureMode = UIImagePickerControllerCameraCaptureModeVideo;                               self.imagePicker.allowsEditing = YES;                                                              [self presentViewController:self.imagePicker animated:YES completion:nil];                           }];        UIAlertAction *cancelAction = \    [UIAlertAction actionWithTitle:@"取消"                             style:UIAlertActionStyleCancel                           handler:^(UIAlertAction * _Nonnull action) {                                       NSLog(@"取消");                           }];        [alertController addAction:photoAction];    [alertController addAction:cameraAction];    [alertController addAction:cancelAction];        [self presentViewController:alertController animated:YES completion:nil];}

#3, 关于缓存, 如何把照片存入缓存目录?

这部分我们先考虑缓存目录, 一般存在Document 或者 Temp里面

我们给图片和视频各创建一个缓存目录:

#define PHOTOCACHEPATH [NSTemporaryDirectory() stringByAppendingPathComponent:@"photoCache"]#define VIDEOCACHEPATH [NSTemporaryDirectory() stringByAppendingPathComponent:@"videoCache"]

把UIImage存入缓存的方法:

//将Image保存到缓存路径中- (void)saveImage:(UIImage *)image toCachePath:(NSString *)path {        NSFileManager *fileManager = [NSFileManager defaultManager];    if (![fileManager fileExistsAtPath:PHOTOCACHEPATH]) {                NSLog(@"路径不存在, 创建路径");        [fileManager createDirectoryAtPath:PHOTOCACHEPATH               withIntermediateDirectories:YES                                attributes:nil                                     error:nil];    } else {                NSLog(@"路径存在");    }        //[UIImagePNGRepresentation(image) writeToFile:path atomically:YES];    [UIImageJPEGRepresentation(image, 1) writeToFile:path atomically:YES];}

4. 如何把视频存入缓存?

把视频存入缓存的方法:

//将视频保存到缓存路径中- (void)saveVideoFromPath:(NSString *)videoPath toCachePath:(NSString *)path {        NSFileManager *fileManager = [NSFileManager defaultManager];    if (![fileManager fileExistsAtPath:VIDEOCACHEPATH]) {                NSLog(@"路径不存在, 创建路径");        [fileManager createDirectoryAtPath:VIDEOCACHEPATH               withIntermediateDirectories:YES                                attributes:nil                                     error:nil];    } else {                NSLog(@"路径存在");    }        NSError *error;    [fileManager copyItemAtPath:videoPath toPath:path error:&error];    if (error) {                NSLog(@"文件保存到缓存失败");    }}

从缓存获取图片的方法:

//从缓存路径获取照片- (UIImage *)getImageFromPath:(NSString *)path {        NSFileManager *fileManager = [NSFileManager defaultManager];    if ([fileManager fileExistsAtPath:path]) {                return [UIImage imageWithContentsOfFile:path];    }        return nil;}

上传图片和视频的时候我们一般会利用当前时间给文件命名, 方法如下

//以当前时间合成图片名称- (NSString *)getImageNameBaseCurrentTime {        NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];    [dateFormatter setDateFormat:@"yyyy-MM-dd HH-mm-ss"];        return [[dateFormatter stringFromDate:[NSDate date]] stringByAppendingString:@".JPG"];}//以当前时间合成视频名称- (NSString *)getVideoNameBaseCurrentTime {        NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];    [dateFormatter setDateFormat:@"yyyy-MM-dd HH-mm-ss"];        return [[dateFormatter stringFromDate:[NSDate date]] stringByAppendingString:@".MOV"];}

有时候需要获取视频的第一帧作为显示, 方法如下:

//获取视频的第一帧截图, 返回UIImage//需要导入AVFoundation.h- (UIImage*) getVideoPreViewImageWithPath:(NSURL *)videoPath{    AVURLAsset *asset = [[AVURLAsset alloc] initWithURL:videoPath options:nil];        AVAssetImageGenerator *gen         = [[AVAssetImageGenerator alloc] initWithAsset:asset];    gen.appliesPreferredTrackTransform = YES;        CMTime time      = CMTimeMakeWithSeconds(0.0, 600);    NSError *error   = nil;        CMTime actualTime;    CGImageRef image = [gen copyCGImageAtTime:time actualTime:&actualTime error:&error];    UIImage *img     = [[UIImage alloc] initWithCGImage:image];        return img;}

5. 如何上传?

下面就是上传方法:

我把服务器地址xx掉了, 大家可以改为自己的

//上传图片和视频- (void)uploadImageAndMovieBaseModel:(uploadModel *)model {        //获取文件的后缀名    NSString *extension = [model.name componentsSeparatedByString:@"."].lastObject;        //设置mimeType    NSString *mimeType;    if ([model.type isEqualToString:@"image"]) {                mimeType = [NSString stringWithFormat:@"image/%@", extension];    } else {                mimeType = [NSString stringWithFormat:@"video/%@", extension];    }        //创建AFHTTPSessionManager    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];        //设置响应文件类型为JSON类型    manager.responseSerializer    = [AFJSONResponseSerializer serializer];        //初始化requestSerializer    manager.requestSerializer     = [AFHTTPRequestSerializer serializer];        manager.responseSerializer.acceptableContentTypes = nil;        //设置timeout    [manager.requestSerializer setTimeoutInterval:20.0];        //设置请求头类型    [manager.requestSerializer setValue:@"form/data" forHTTPHeaderField:@"Content-Type"];        //设置请求头, 授权码    [manager.requestSerializer setValue:@"YgAhCMxEehT4N/DmhKkA/M0npN3KO0X8PMrNl17+hogw944GDGpzvypteMemdWb9nlzz7mk1jBa/0fpOtxeZUA==" forHTTPHeaderField:@"Authentication"];        //上传服务器接口    NSString *url = [NSString stringWithFormat:@"http://xxxxx.xxxx.xxx.xx.x"];    //开始上传    [manager POST:url parameters:nil constructingBodyWithBlock:^(id
     
        _Nonnull formData) {                NSError *error;        BOOL success = [formData appendPartWithFileURL:[NSURL fileURLWithPath:model.path] name:model.name fileName:model.name mimeType:mimeType error:&error];        if (!success) {                        NSLog(@"appendPartWithFileURL error: %@", error);        }    } progress:^(NSProgress * _Nonnull uploadProgress) {                NSLog(@"上传进度: %f", uploadProgress.fractionCompleted);    } success:^(NSURLSessionDataTask * _Nonnull task, id  _Nullable responseObject) {                NSLog(@"成功返回: %@", responseObject);        model.isUploaded = YES;        [self.uploadedArray addObject:model];    } failure:^(NSURLSessionDataTask * _Nullable task, NSError * _Nonnull error) {                NSLog(@"上传失败: %@", error);        model.isUploaded = NO;    }];}
     

这里有事先创建两个可变数组uploadArray, uploadedArray, 一个存放准要上传的内容, 一个存放上传完的内容

在准备上传后做什么操作, 可以检查两个数组的数量是否相等

 

最后是UIImagePickerController的协议方法

#pragma mark - UIImagePickerDelegate methods- (void)imagePickerController:(UIImagePickerController *)pickerdidFinishPickingMediaWithInfo:(NSDictionary
     
       *)info {        [picker dismissViewControllerAnimated:YES completion:nil];        //获取用户选择或拍摄的是照片还是视频    NSString *mediaType = info[UIImagePickerControllerMediaType];        if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {                //获取编辑后的照片        NSLog(@"获取编辑后的好片");        UIImage *tempImage = info[UIImagePickerControllerEditedImage];                //将照片存入相册        if (tempImage) {                        if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {                                //将照片存入相册                NSLog(@"将照片存入相册");                UIImageWriteToSavedPhotosAlbum(tempImage, self, nil, nil);            }                        //获取图片名称            NSLog(@"获取图片名称");            NSString *imageName = [self getImageNameBaseCurrentTime];            NSLog(@"图片名称: %@", imageName);                        //将图片存入缓存            NSLog(@"将图片写入缓存");            [self saveImage:tempImage                toCachePath:[PHOTOCACHEPATH stringByAppendingPathComponent:imageName]];                        //创建uploadModel            NSLog(@"创建model");            uploadModel *model = [[uploadModel alloc] init];                        model.path       = [PHOTOCACHEPATH stringByAppendingPathComponent:imageName];            model.name       = imageName;            model.type       = @"image";            model.isUploaded = NO;                        //将模型存入待上传数组            NSLog(@"将Model存入待上传数组");            [self.uploadArray addObject:model];                    }    }        else if ([mediaType isEqualToString:(NSString *)kUTTypeMovie]) {                if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {                        //如果是拍摄的视频, 则把视频保存在系统多媒体库中            NSLog(@"video path: %@", info[UIImagePickerControllerMediaURL]);                        ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];            [library writeVideoAtPathToSavedPhotosAlbum:info[UIImagePickerControllerMediaURL] completionBlock:^(NSURL *assetURL, NSError *error) {                                if (!error) {                                        NSLog(@"视频保存成功");                } else {                                        NSLog(@"视频保存失败");                }            }];        }                //生成视频名称        NSString *mediaName = [self getVideoNameBaseCurrentTime];        NSLog(@"mediaName: %@", mediaName);                //将视频存入缓存        NSLog(@"将视频存入缓存");        [self saveVideoFromPath:info[UIImagePickerControllerMediaURL] toCachePath:[VIDEOCACHEPATH stringByAppendingPathComponent:mediaName]];                //创建uploadmodel        uploadModel *model = [[uploadModel alloc] init];                model.path       = [VIDEOCACHEPATH stringByAppendingPathComponent:mediaName];        model.name       = mediaName;        model.type       = @"moive";        model.isUploaded = NO;                //将model存入待上传数组        [self.uploadArray addObject:model];    }        //[picker dismissViewControllerAnimated:YES completion:nil];}- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {     [picker dismissViewControllerAnimated:YES completion:nil];}