Question

I m New to iphone. 在我的小应用中,如何从照片图书馆获得图像。我使用以下代码来拍摄图像并贴上图像。

-(IBAction) selectimage
{
UIImagePickerController *picker=[[UIImagePickerController alloc] init];
picker.delegate=self;
picker.sourceType=UIImagePickerControllerSourceTypeSavedPhotosAlbum;
[self presentModalViewController:picker animated:YES];
[picker release];
}
-(void) imagePickerController:(UIImagePickerController *)UIPicker didFinishPickingMediaWithInfo:(NSDictionary *) info
{
[UIPicker dismissModalViewControllerAnimated:YES];
imageview.image=[info objectForKey:"UIImagePickerControllerOriginalImage"];
    NSLog("Image Path=%@",imageview.image);
}

Its succefully placed to Imageview. But i cant get its imagepath. I m using nslog("%@",imageview.image); it shows "Image Path=" in console. How can i get its path and how to retrieve photos from photo library. Any body help me. Thanks in advance.

Answer 1

<代码>UIImagePickerController 原件Image只归还图像数据,而不提及其当地储存。我用了这 myself,但我猜测你所期待的是什么。

NSURL* localUrl = (NSURL *)[info valueForKey:UIImagePickerControllerReferenceURL];

至少是我知道收回任何URL的唯一途径。

为检索图像,请查询。问题:。但是,也铭记,你已经掌握了图像。

UIImage* image=(UIImage*)[info objectForKey:@"UIImagePickerControllerOriginalImage"];

因此,请你真的需要。

Answer 2

Swift 3.0, You can get imageData from referenceURL by following way

let url = URL(string: "assets-library://asset/asset.JPG?id=1000000007&ext=JPG")
let asset = PHAsset.fetchAssets(withALAssetURLs: [url], options: nil)
guard let result = asset.firstObject else {
  return nil
}
let imageManager = PHImageManager.default()
var imageData: Data? = nil
imageManager.requestImageData(for: result, options: nil, resultHandler: { (data, string, orientation, dict) in
  imageData = data
})

友情链接