Wie bekomme ich den Ursprungspfad für Fotos/Videos von der Assets-Bibliothek in iOS/iPhone?

Question

Ich habe dieses Problem seit mehr als einer Woche konfrontiert, ich bin nicht in der Lage, Original-Foto/Video-Pfad von Assets-Library URL zu bekommen.

Ich kann seine Daten erhalten, indem Sie diese Datei in meiner SandBox-App speichern, aber hier möchte ich diese Dinge vermeiden, um erneut eine Kopie dieser Datei zu erstellen.

Ich habe dies in DropBox investieren, sie sind direkt von Assets-Bibliothek URL hochladen. Also, bitte hilf mir, dieses Problem zu lösen.

Vielen Dank im Voraus.

Hier ist mein Code:

-(NSString*) videoAssetURLToTempFile:(NSString*)combineURL{ 
self.activityIndicator.hidden = FALSE; 
NSLog(@"combineURL: %@",combineURL); 
NSArray *arr = [combineURL componentsSeparatedByString:@"->"]; 
NSString *index = [arr objectAtIndex:0]; 

NSURL *url = [NSURL URLWithString:[NSString stringWithFormat:@"%@",[arr objectAtIndex:1]]]; 

//url like: "assets-library://asset/asset.MOV?id=78988A2B-203B-41B9-8EDA-F3029303DFBF&ext=MOV" 

NSString * surl = [url absoluteString]; 
NSString * ext = [surl substringFromIndex:[surl rangeOfString:@"ext="].location + 4]; 

NSTimeInterval ti = [[NSDate date]timeIntervalSinceReferenceDate]; 
NSString *fname = [NSString stringWithFormat: @"%f.%@",ti,ext]; 

NSString *stringPath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES)objectAtIndex:0]stringByAppendingPathComponent:@"SAVED_PHOTOS"]; 
// New Folder is your folder name 
NSError *error = nil; 
if (![[NSFileManager defaultManager] fileExistsAtPath:stringPath]) 
    [[NSFileManager defaultManager] createDirectoryAtPath:stringPath withIntermediateDirectories:NO attributes:nil error:&error]; 

NSString *tmpfile = [stringPath stringByAppendingPathComponent:fname]; 

ALAssetsLibraryAssetForURLResultBlock resultblock = ^(ALAsset *myasset){ 
    ALAssetRepresentation * rep = [myasset defaultRepresentation]; 
    NSLog(@"video url: %@",rep.url); 
    NSUInteger size = [rep size]; 

    NSLog(@"file size: %@",[NSString stringWithFormat:@"%llu",(unsigned long long)rep.size]); 
    if (!appDelegate.arrFileSize) { 
     appDelegate.arrFileSize = [[NSMutableArray alloc] init]; 
    } 
    [appDelegate.arrFileSize replaceObjectAtIndex:[index integerValue] withObject:[NSString stringWithFormat:@"%llu",(unsigned long long)rep.size]]; 
    [appDelegate.accessToken setObject:appDelegate.arrFileSize forKey:@"FileSize"]; 
    [appDelegate.accessToken synchronize]; 
    NSLog(@"video fileSize: %@",[self convertbyteToKB_MB:(unsigned long long)rep.size]); 
    unsigned long long freeSpaceSize = [self getFreeDiskspace]; 
    NSLog(@"freeSpaceSize: %llu",freeSpaceSize); 

    if (freeSpaceSize<rep.size && rep.size<1073741824) { 
     NSString *alertMsg; 
     if (IS_IPHONE) { 
      alertMsg = [NSString stringWithFormat:@"App requires %@ free storage space to upload this video. To proceed with this upload, please go to your iPhone's Settings and clear some space.",[self convertbyteToKB_MB:(unsigned long long)rep.size]]; 
     } 
     else{ 
      alertMsg = [NSString stringWithFormat:@"App requires %@ free storage space to upload this video. To proceed with this upload, please go to your iPad's Settings and clear some space.",[self convertbyteToKB_MB:(unsigned long long)rep.size]]; 
     } 
     dispatch_async(dispatch_get_main_queue(), ^{ 

      UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"Alert" message:alertMsg delegate:self cancelButtonTitle:@"OK" otherButtonTitles:nil, nil]; 
      [alert show]; 
      dispatch_async(dispatch_get_main_queue(), ^{ 
       self.waitToUploadLbl.hidden = TRUE; 
      }); 
     }); 

    } 
    else{ 
     if (rep.size>=1073741824) { 
      dispatch_async(dispatch_get_main_queue(), ^{ 
       self.waitToUploadLbl.hidden = TRUE; 
      }); 
     } 
     else{ 
      convertingTotal++; 
      dispatch_async(dispatch_get_main_queue(), ^{ 
       self.waitToUploadLbl.hidden = FALSE; 
      }); 
      const int bufferSize = 8*1024*1024; 
      FILE* f = fopen([tmpfile cStringUsingEncoding:1], "wb+"); 
      if (f == NULL) { 
       return; 
      } 

      Byte * buffer = (Byte*)malloc(bufferSize); 
      unsigned long long read = 0, offset = 0, written = 0; 
      NSError* err; 
      if (size != 0) { 

       do { 
        read = (unsigned long long)[rep getBytes:buffer 
                fromOffset:offset 
                 length:bufferSize 
                 error:&err]; 
        written = (unsigned long long)fwrite(buffer, sizeof(char), read, f); 
        offset += read; 
       } while (read != 0); 
       blockedNo++; 
      } 
      fclose(f); 
      NSLog(@"file saved to temp"); 
      dispatch_async(dispatch_get_main_queue(), ^{ 
       NSLog(@"total: %d blockedNo: %d",convertingTotal,blockedNo); 
       self.waitToUploadLbl.hidden = TRUE; 
      }); 
     } 
    } 

}; 

ALAssetsLibraryAccessFailureBlock failureblock = ^(NSError *myerror) 
{ 
    //NSLog(@"Can not get asset - %@",[myerror localizedDescription]); 

}; 

if(url) 
{ 
    ALAssetsLibrary* assetslibrary = [[ALAssetsLibrary alloc] init]; 
    [assetslibrary assetForURL:url 
        resultBlock:resultblock 
        failureBlock:failureblock]; 
} 
self.activityIndicator.hidden = TRUE; 
@try { 
    [appDelegate.uploadArray1 replaceObjectAtIndex:[index integerValue] withObject:tmpfile]; 
    [appDelegate.accessToken setObject:appDelegate.uploadArray1 forKey:@"UploadArray"]; 
    [appDelegate.accessToken synchronize]; 
    NSLog(@"temporary path: %@",tmpfile); 
    [self performSelector:@selector(uploadphotoToServer:) withObject:index afterDelay:1]; 
} 
@catch (NSException *exception) { 
    NSLog(@"Error: %@",exception); 
} 
@finally { 
    dispatch_async(dispatch_get_main_queue(), ^{ 
     if (convertingTotal==blockedNo) { 
      self.waitToUploadLbl.hidden = TRUE; 
     } 

    }); 
} 
return tmpfile; 
} 

Answer 1

ich das hoffen, dass Sie helfen

NSString *str_url=[arrURL objectAtIndex:indexPath.row];//put your index 

        ALAssetsLibrary *assetLibrary=[[ALAssetsLibrary alloc] init]; 

        NSURL* aURL = [NSURL URLWithString:[NSString stringWithFormat:@"%@",str_url]]; 

        [assetLibrary assetForURL:aURL resultBlock:^(ALAsset *asset) { 

         ALAssetRepresentation *rep = [asset defaultRepresentation]; 
         Byte *buffer = (Byte*)malloc(rep.size); 
         NSUInteger buffered = [rep getBytes:buffer fromOffset:0.0 length:rep.size error:nil]; 
         NSData *data = [NSData dataWithBytesNoCopy:buffer length:buffered freeWhenDone:YES]; 

         cell.imageCell.image=[UIImage imageWithData:data]; 


        } failureBlock:^(NSError *error) 
        { 
         NSLog(@"Error: %@",[error localizedDescription]); 
        }];