iOS把图片保存到相册,并获取图片文件名的实例

- (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(@"图片保存失败！");
 }else{
  DLog(@"图片保存成功！");
 }
}
此方法可以把其他来源的图片也可保存到相册

 //当image从相机中获取的时候存入相册中
 //保存方法1
//  UIImageWriteToSavedPhotosAlbum(img.image,self,@selector(image:didFinishSavingWithError:contextInfo:),NULL);
//   imageData = nil;
  
  WEAKSELF
  //保存方法2同时获取保存的相片文件名
  __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照相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;
   
  }];
  
 }];