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iOS实现视频和图片的上传

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 <Foundation/Foundation.h>

@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<AFMultipartFormData>  _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 *)picker
didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)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];
}

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