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關於IOS如何實現視頻和圖片的上傳, 我們先理清下思路，然後小編根據思路一步一步給大家詳解實現過程。

思路:

#1. 如何獲取圖片?

#2. 如何獲取視頻?

#3. 如何把圖片存到緩存路徑中?

#4. 如何把視頻存到緩存路徑中?

#5. 如何上傳?

接下來, 我們按照上面的思路一步一步實現

首先我們新建一個類, 用來儲存每一個要上傳的文件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. 如何獲取圖片?

從相冊選擇 或者 拍照,

這部分可以用UIImagePickerController來實現

代碼如下:

- (void)actionPhoto {
  UIAlertController *alertController = \
  [UIAlertController alertControllerWithTitle:@""
                    message:@"上傳照片"
                 preferredStyle:UIAlertControllerStyleActionSheet];
  UIAlertAction *photoAction = \
  [UIAlertAction actionWithTitle:@"從相冊選擇"
               style:UIAlertActionStyleDefault
              handler:^(UIAlertAction * _Nonnull action) {
                NSLog(@"從相冊選擇");
                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. 如果獲取視頻?

從相冊選擇 或者 拍攝

這部分也可以用UIImagePickerController來實現

代碼:

- (void)actionVideo {
  UIAlertController *alertController = \
  [UIAlertController alertControllerWithTitle:@""
                    message:@"上傳視頻"
                 preferredStyle:UIAlertControllerStyleActionSheet];
  UIAlertAction *photoAction = \
  [UIAlertAction actionWithTitle:@"從視頻庫選擇"
               style:UIAlertActionStyleDefault
              handler:^(UIAlertAction * _Nonnull action) {
                NSLog(@"從視頻庫選擇");
                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:@"錄像"
               style:UIAlertActionStyleDefault
              handler:^(UIAlertAction * _Nonnull action) {
                NSLog(@"錄像");
                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, 關於緩存, 如何把照片存入緩存目錄?

這部分我們先考慮緩存目錄, 一般存在Document 或者 Temp裡面

我們給圖片和視頻各創建一個緩存目錄:

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

把UIImage存入緩存的方法:

//將Image保存到緩存路徑中
- (void)saveImage:(UIImage *)image toCachePath:(NSString *)path {
  NSFileManager *fileManager = [NSFileManager defaultManager];
  if (![fileManager fileExistsAtPath:PHOTOCACHEPATH]) {
    NSLog(@"路徑不存在, 創建路徑");
    [fileManager createDirectoryAtPath:PHOTOCACHEPATH
        withIntermediateDirectories:YES
                attributes:nil
                   error:nil];
  } else {
    NSLog(@"路徑存在");
  }
  //[UIImagePNGRepresentation(image) writeToFile:path atomically:YES];
  [UIImageJPEGRepresentation(image, 1) writeToFile:path atomically:YES];
}

4. 如何把視頻存入緩存?

把視頻存入緩存的方法:

//將視頻保存到緩存路徑中
- (void)saveVideoFromPath:(NSString *)videoPath toCachePath:(NSString *)path {
  NSFileManager *fileManager = [NSFileManager defaultManager];
  if (![fileManager fileExistsAtPath:VIDEOCACHEPATH]) {
    NSLog(@"路徑不存在, 創建路徑");
    [fileManager createDirectoryAtPath:VIDEOCACHEPATH
        withIntermediateDirectories:YES
                attributes:nil
                   error:nil];
  } else {
    NSLog(@"路徑存在");
  }
  NSError *error;
  [fileManager copyItemAtPath:videoPath toPath:path error:&error];
  if (error) {
    NSLog(@"文件保存到緩存失敗");
  }
}

從緩存獲取圖片的方法:

//從緩存路徑獲取照片
- (UIImage *)getImageFromPath:(NSString *)path {
  NSFileManager *fileManager = [NSFileManager defaultManager];
  if ([fileManager fileExistsAtPath:path]) {
    return [UIImage imageWithContentsOfFile:path];
  }
  return nil;
}

上傳圖片和視頻的時候我們一般會利用當前時間給文件命名, 方法如下

//以當前時間合成圖片名稱
- (NSString *)getImageNameBaseCurrentTime {
  NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
  [dateFormatter setDateFormat:@"yyyy-MM-dd HH-mm-ss"];
  return [[dateFormatter stringFromDate:[NSDate date]] stringByAppendingString:@".JPG"];
}
//以當前時間合成視頻名稱
- (NSString *)getVideoNameBaseCurrentTime {
  NSDateFormatter *dateFormatter = [[NSDateFormatter alloc] init];
  [dateFormatter setDateFormat:@"yyyy-MM-dd HH-mm-ss"];
  return [[dateFormatter stringFromDate:[NSDate date]] stringByAppendingString:@".MOV"];
}

有時候需要獲取視頻的第一幀作為顯示, 方法如下:

//獲取視頻的第一幀截圖, 返回UIImage
//需要導入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. 如何上傳?

下面就是上傳方法:

我把服務器地址xx掉了, 大家可以改為自己的

//上傳圖片和視頻
- (void)uploadImageAndMovieBaseModel:(uploadModel *)model {
  //獲取文件的後綴名
  NSString *extension = [model.name componentsSeparatedByString:@"."].lastObject;
  //設置mimeType
  NSString *mimeType;
  if ([model.type isEqualToString:@"image"]) {
    mimeType = [NSString stringWithFormat:@"image/%@", extension];
  } else {
    mimeType = [NSString stringWithFormat:@"video/%@", extension];
  }
  //創建AFHTTPSessionManager
  AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
  //設置響應文件類型為JSON類型
  manager.responseSerializer  = [AFJSONResponseSerializer serializer];
  //初始化requestSerializer
  manager.requestSerializer   = [AFHTTPRequestSerializer serializer];
  manager.responseSerializer.acceptableContentTypes = nil;
  //設置timeout
  [manager.requestSerializer setTimeoutInterval:20.0];
  //設置請求頭類型
  [manager.requestSerializer setValue:@"form/data" forHTTPHeaderField:@"Content-Type"];
  //設置請求頭, 授權碼
  [manager.requestSerializer setValue:@"YgAhCMxEehT4N/DmhKkA/M0npN3KO0X8PMrNl17+hogw944GDGpzvypteMemdWb9nlzz7mk1jBa/0fpOtxeZUA==" forHTTPHeaderField:@"Authentication"];
  //上傳服務器接口
  NSString *url = [NSString stringWithFormat:@"http://xxxxx.xxxx.xxx.xx.x"];
  //開始上傳
  [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(@"上傳進度: %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(@"上傳失敗: %@", error);
    model.isUploaded = NO;
  }];
}

這裡有事先創建兩個可變數組uploadArray, uploadedArray, 一個存放准要上傳的內容, 一個存放上傳完的內容

在准備上傳後做什麼操作, 可以檢查兩個數組的數量是否相等

最後是UIImagePickerController的協議方法

#pragma mark - UIImagePickerDelegate methods
- (void)imagePickerController:(UIImagePickerController *)picker
didFinishPickingMediaWithInfo:(NSDictionary<NSString *,id> *)info {
  [picker dismissViewControllerAnimated:YES completion:nil];
  //獲取用戶選擇或拍攝的是照片還是視頻
  NSString *mediaType = info[UIImagePickerControllerMediaType];
  if ([mediaType isEqualToString:(NSString *)kUTTypeImage]) {
    //獲取編輯後的照片
    NSLog(@"獲取編輯後的好片");
    UIImage *tempImage = info[UIImagePickerControllerEditedImage];
    //將照片存入相冊
    if (tempImage) {
      if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {
        //將照片存入相冊
        NSLog(@"將照片存入相冊");
        UIImageWriteToSavedPhotosAlbum(tempImage, self, nil, nil);
      }
      //獲取圖片名稱
      NSLog(@"獲取圖片名稱");
      NSString *imageName = [self getImageNameBaseCurrentTime];
      NSLog(@"圖片名稱: %@", imageName);
      //將圖片存入緩存
      NSLog(@"將圖片寫入緩存");
      [self saveImage:tempImage
        toCachePath:[PHOTOCACHEPATH stringByAppendingPathComponent:imageName]];
      //創建uploadModel
      NSLog(@"創建model");
      uploadModel *model = [[uploadModel alloc] init];
      model.path    = [PHOTOCACHEPATH stringByAppendingPathComponent:imageName];
      model.name    = imageName;
      model.type    = @"image";
      model.isUploaded = NO;
      //將模型存入待上傳數組
      NSLog(@"將Model存入待上傳數組");
      [self.uploadArray addObject:model];
    }
  }
  else if ([mediaType isEqualToString:(NSString *)kUTTypeMovie]) {
    if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {
      //如果是拍攝的視頻, 則把視頻保存在系統多媒體庫中
      NSLog(@"video path: %@", info[UIImagePickerControllerMediaURL]);
      ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
      [library writeVideoAtPathToSavedPhotosAlbum:info[UIImagePickerControllerMediaURL] completionBlock:^(NSURL *assetURL, NSError *error) {
        if (!error) {
          NSLog(@"視頻保存成功");
        } else {
          NSLog(@"視頻保存失敗");
        }
      }];
    }
    //生成視頻名稱
    NSString *mediaName = [self getVideoNameBaseCurrentTime];
    NSLog(@"mediaName: %@", mediaName);
    //將視頻存入緩存
    NSLog(@"將視頻存入緩存");
    [self saveVideoFromPath:info[UIImagePickerControllerMediaURL] toCachePath:[VIDEOCACHEPATH stringByAppendingPathComponent:mediaName]];
    //創建uploadmodel
    uploadModel *model = [[uploadModel alloc] init];
    model.path    = [VIDEOCACHEPATH stringByAppendingPathComponent:mediaName];
    model.name    = mediaName;
    model.type    = @"moive";
    model.isUploaded = NO;
    //將model存入待上傳數組
    [self.uploadArray addObject:model];
  }
  //[picker dismissViewControllerAnimated:YES completion:nil];
}
- (void)imagePickerControllerDidCancel:(UIImagePickerController *)picker {
  [picker dismissViewControllerAnimated:YES completion:nil];
}

以上所述是小編給大家介紹的IOS實現視頻和圖片的上傳思路，希望對大家有所幫助，如果大家有任何疑問請給我留言，小編會及時回復大家的。在此也非常感謝大家對本站網站的支持！

[db:作者簡介][db:原文翻譯及解析]

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