IOS saves the picture to the album and gets an instance of the image file name

Time:2020-10-18

Examples are as follows:

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {
 UIImage *image = [info objectForKey:UIImagePickerControllerOriginalImage];
 if (picker.sourceType == UIImagePickerControllerSourceTypeCamera) {
  UIImageWriteToSavedPhotosAlbum(image,self,@selector(image:didFinishSavingWithError:contextInfo:),NULL);
 }
}
- (void)image:(UIImage*)image didFinishSavingWithError:(NSError*)error contextInfo:(void*)contextInfo
{
 if (error) {
  Dlog (@ "picture save failed! "";
 }else{
  Dlog (@ "picture saved successfully! "";
 }
}
This method can save pictures from other sources to the album

 //When the image is obtained from the camera, it is stored in the album
 //Preservation method 1
//  UIImageWriteToSavedPhotosAlbum(img.image,self,@selector(image:didFinishSavingWithError:contextInfo:),NULL);
//   imageData = nil;
  
  WEAKSELF
  //Save method 2 at the same time get the saved photo file name
  __blockALAssetsLibrary *lib = [[ALAssetsLibraryalloc] init];
  [lib writeImageToSavedPhotosAlbum:img.image.CGImagemetadata:nilcompletionBlock:^(NSURL *assetURL,NSError *error) {
   
   ALAssetsLibraryAssetForURLResultBlock resultblock = ^(ALAsset *imageAsset)
   {
    ALAssetRepresentation *imageRep = [imageAssetdefaultRepresentation];
    weakSelf.imageName = [NSStringstringWithFormat:@"%@",[imageRepfilename]];
    NSLog(@"[imageRep filename 1] : %@", [imageRepfilename]);
    DBLog(@" self.addressImageName Photo 0 =% @ ", weakSelf.imageName );
    commitBlock(img.image,UIImageJPEGRepresentation(img.image,0.5),self.imageName);
   };
   ALAssetsLibrary* assetslibrary = [[ALAssetsLibraryalloc] init];
   [assetslibrary assetForURL:assetURLresultBlock:resultblock failureBlock:nil];
   
   NSLog(@"assetURL = %@, error = %@", assetURL, error);
   lib = nil;
   
  }];
  
 }];

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