Question

我使用MWPhotoBrowser显示UIImagePickerController拍摄的照片这是我保存到用户专辑的代码。

    -(void)imagePickerController:(UIImagePickerController *)pickerdidFinishPickingMediaWithInfo:(NSDictionary *)info
{

  //  NSDictionary* metadata=info[UIImagePickerControllerMediaMetadata];
//    [[PHPhotoLibrary sharedPhotoLibrary]performChanges:^{
//        NSURL* url=info[UIImagePickerControllerReferenceURL];
//        PHAssetChangeRequest* assetChangeReques=    [PHAssetChangeRequest creationRequestForAssetFromImageAtFileURL:url];
//        PHAssetCollectionChangeRequest* request=[PHAssetCollectionChangeRequest changeRequestForAssetCollection:self.assetCollection];
//        [request addAssets:@[[assetChangeReques placeholderForCreatedAsset]]];
//    }completionHandler:^(BOOL success,NSError* error){
//        if (success) {
//          //  self.previewImgView.image=image;
//        }
//    }];

   ALAssetsLibrary* alassetsLibary=[[ALAssetsLibrary alloc] init];
   [alassetsLibary saveImageData:UIImageJPEGRepresentation(info[UIImagePickerControllerOriginalImage], 1.0f) toAlbum:self.assetCollection.localizedTitle metadata:info[UIImagePickerControllerMediaMetadata] completion:^(NSURL* assetUrl,NSError* error)
 {

   }failure:^(NSError* error){

   }];
   self.previewImgView.image=[info[UIImagePickerControllerOriginalImage] getThumbnailWithSize:self.previewImgView.bounds] ;
   alassetsLibary=nil;
   info=nil;

}

我已经习惯了保存上面的照片。但它无法解决与你的问题相同的问题在第二种方法中。我试图将UIImageJPEGRepresentation参数从0.1更改为1.0。但它确实起作用我试着让alassetsLibary=nil; info=nil;但是当我打开photoBrowser时。内存增长如此之快。

如果有人有解决方案，请告诉我!!
而且我想知道Apple如何处理本机相机应用中的这个问题感谢。

Answer 1

我总是使用此功能将照片保存到相册中：

- (void)imagePickerController:(UIImagePickerController *)picker didFinishPickingMediaWithInfo:(NSDictionary *)info {

    ALAssetsLibrary *library = [[ALAssetsLibrary alloc] init];
    [library writeImageToSavedPhotosAlbum:((UIImage *)[info objectForKey:UIImagePickerControllerEditedImage]).CGImage
                                 metadata:[info objectForKey:UIImagePickerControllerMediaMetadata]
                          completionBlock:^(NSURL *assetURL, NSError *error) {
                              NSLog(@"assetURL %@", assetURL);
                                imageURL=[assetURL absoluteString];
                        //save URL for future use      
                              [[NSUserDefaults standardUserDefaults] setObject:imageURL forKey:@"imageurl"];

                          }];


    [picker dismissViewControllerAnimated:YES completion:NULL];


}

内存增加使用UIImagePickerController拍摄照片并保存到用户的专辑中

1 个答案: