Develop Reference

Google ad click is not opening the external web browser

I am trying to implement the ad in my app with Custom Native Ad Format - https://developers.google.com/ad-manager/mobile-ads-sdk/android/native/custom-formats#java_1
So, according to the documentation I am going with the approach described there and creating the ad
...
private void setListeners() {
...
imageView.setOnClickListener(v -> {
nativeCustomFormatAd.performClick("IMAGE");
});
...
}
private NativeCustomFormatAd nativeCustomFormatAd;
AdLoader adLoader = new AdLoader.Builder(context, "/6499/example/native")
.forCustomFormatAd("10063170",
new NativeCustomFormatAd.OnCustomFormatAdLoadedListener() {
#Override
public void onCustomFormatAdLoaded(NativeCustomFormatAd ad) {
// Show the custom format and record an impression.
nativeCustomFormatAd = ad;
Drawable drawable = vm.nativeCustomFormatAd.getImage("IMAGE").getDrawable();
imageView.setDrawable(drawable);
}
},
new NativeCustomFormatAd.OnCustomClickListener() {
#Override
public void onCustomClick(NativeCustomFormatAd ad, String s) {
// Handle the click action
}
})
.withAdListener( ... )
.withNativeAdOptions( ... )
.build();
#SuppressLint("VisibleForTests")
AdManagerAdRequest adManagerAdRequest = new AdManagerAdRequest.Builder().build();
adLoader.loadAd(adManagerAdRequest);
...
So, it looks pretty simple I try to make a request for the ad then I got (in a callback) NativeCustomFormatAd, save it as a class member, and along with it get drawable and set it to the imageView (to present it in the UI). Once a user clicks on the imageView I get an event in the click listener and invoke nativeCustomFormatAd.performClick("IMAGE");.
The problem is that I expect that once I transfer the ad click to the SDK (by nativeCustomFormatAd.performClick("IMAGE");) SDK is supposed to open the external browser, but instead nothing happens.
P.S. I am sure that nativeCustomFormatAd.performClick("IMAGE"); getting invoked and also I see that SDK gets the click as I got a callback event here:
...
new NativeCustomFormatAd.OnCustomClickListener() {
#Override
public void onCustomClick(NativeCustomFormatAd ad, String s) {
// Handle the click action
}
})
...
What am I missing here?

According to the docs you linked:
When a click is performed on a custom format ad, there are three possible responses from the SDK, attempted in this order:
Invoke the OnCustomClickListener from AdLoader, if one was provided.
For each of the ad's deep link URLs, attempt to locate a content resolver and start the first one that resolves.
Open a browser and navigate to the ad's traditional Destination URL.
Also:
If you pass a listener object in, the SDK instead invokes its onCustomClick method and takes no further action.
Therefore, it seems you have to pass a null OnCustomClickListener.

How does Android Paging Library know to load more data?

Iʼm fairly new to developing Android apps and Iʼm trying to do everything “the right way.” So right now, Iʼm implementing the new Android Paging Library into my project, where I need to load a list of articles from a network server.
I have an ArticlesRepository class that returns an ArticleList class containing instances of ArticleListItem that I would like to display in a RecyclerView. The list of articles is paginated already on the server, so the repository sends a request for the first page and returns an ArticleList with the page property set to 1 and the articles property containing a List<ArticleListItem> of articles on the requested page. I donʼt know how many articles can be on one page.
Now, I was able to implement a PageKeyedDataSource<Integer, ArticleListItem>, but it only fetches the first page:
#Override
public void loadInitial(#NonNull LoadInitialParams<Integer> params, #NonNull LoadInitialCallback<Integer, ArticleListItem> callback) {
ArticleList list = load(1);
if (list != null) {
callback.onResult(list.articles, null, next(list));
}
}
#Override
public void loadBefore(#NonNull LoadParams<Integer> params, #NonNull LoadCallback<Integer, ArticleListItem> callback) {
ArticleList list = load(previous(params.key));
if (list != null) {
callback.onResult(list.articles, previous(list));
}
}
#Override
public void loadAfter(#NonNull LoadParams<Integer> params, #NonNull LoadCallback<Integer, ArticleListItem> callback) {
ArticleList list = load(next(params.key));
if (list != null) {
callback.onResult(list.articles, next(list));
}
}
The previous/next functions return an Integer with the previous/next page number or null if there isnʼt one.
In my ViewModel, I configure the PagedList like this:
PagedList.Config config = new PagedList.Config.Builder()
.setEnablePlaceholders(false)
.setInitialLoadSizeHint(1)
.setPageSize(1)
.setPrefetchDistance(1)
.build();
This way Iʼm able to load the first page, but when I scroll to the bottom of the RecyclerView (that is inside a NestedScrollView), nothing happens. Debugging shows that the PageKeyedDataSource.loadAfter method is not invoked.
Do I have to somehow tell the PagedList that the next page has to be loaded, or is it the RecyclerView/DataSource/GodKnowsWhatElseʼs job and Iʼm just doing something wrong? Thanks for any advice.

The paging library should know automatically when to load new items. The problem in your implementation is that the paged RecyclerView is inside a NestedScrollView and according to this issue the libary doesn't have built in support for that.
when you put recyclerview inside an infinite scrolling parent, it will
layout all of its children because the parent provides infinite
dimensions.
You'll need to create your own implementation of Nested Scroll View, there is actually one here in this gist that might be able to help you.
It is also suggested to add fillViewPort to this custom nested scroll view:
android:fillViewport="true" to scrollable container

How can I DetectFaces in Amazon Rekognition AWS with Android Studio?

I have tried so many way but i can't succeed. I haven't found any source code examples for Android(about rekognition)
there's a source code in JAVA in the Developer Guide but i cannot implement that even though I tried TT
I try to detect faces by sending an image file from an external storage(from the emulator)
I don't know what i did wrong(I'm not good at coding)
Here is my code
AmazonRekognitionClient amazonRekognitionClient;
Image getAmazonRekognitionImage;
DetectFacesRequest detectFaceRequest;
DetectFacesResult detectFaceResult;
File file = new File(Environment.getExternalStorageDirectory(),"sungyeol.jpg.jpg");
public void test_00(View view) {
ByteBuffer imageBytes;
try{
InputStream inputStream = new FileInputStream(file.getAbsolutePath().toString());
imageBytes = ByteBuffer.wrap(IOUtils.toByteArray(inputStream));
Log.e("InputStream: ",""+inputStream);
Log.e("imageBytes: ","");
getAmazonRekognitionImage.withBytes(imageBytes);
// Initialize the Amazon Cognito credentials provider
CognitoCachingCredentialsProvider credentialsProvider = new CognitoCachingCredentialsProvider(
getApplicationContext(),
"us-east-2:.......", // Identity Pool ID
Regions.US_EAST_2 // Region
);
//I want "ALL" attributes
amazonRekognitionClient = new AmazonRekognitionClient(credentialsProvider);
detectFaceRequest = new DetectFacesRequest()
.withAttributes(Attribute.ALL.toString())
.withImage(getAmazonRekognitionImage);
detectFaceResult = amazonRekognitionClient.detectFaces(detectFaceRequest);
detectFaceResult.getFaceDetails();
}
catch(Exception ex){
Log.e("Error on something:","Message:"+ex.getMessage());
}
and here is my errors
02-04 09:30:07.268 29405-29405/? E/InputStream:: java.io.FileInputStream#a9b23e7
02-04 09:30:07.271 29405-29405/? E/Error on something:: Message:Attempt to invoke virtual method 'com.amazonaws.services.rekognition.model.Image com.amazonaws.services.rekognition.model.Image.withBytes(java.nio.ByteBuffer)' on a null object reference
what is a null object reference?
i try to change the file path but he said no such file ... and when I change to this path, there's errors above.
by the way I've already asked a user for a permission to access a folder from Emulator in Android
please help me
PS. sorry for my bad English
Thank you in advance.

Now I am ok with the issues. I have been through many many things <3 <3 <3.
Thank you
I'm Thai and I had to try harder to find the solutions because there's lack of information in the particular language. Here are my solutions.
My solutions are:
0.There is an endpoint for setting for the Rekognition-->
http://docs.aws.amazon.com/general/latest/gr/rande.html#rekognition_region
1.On a "null object reference issue" I found that I have to create a new object first such as "Image image = new Image();" <-- The "new" command creates an object instance in that class
2.After the above error, there are more errors (Errors on NetworkOnMainThreadException), so I tried everything until I found this page -->
https://docs.aws.amazon.com/cognito/latest/developerguide/getting-credentials.html the page said that ...
Consequently, I looked up for more information about the AsyncTask and after that I created an AsyncTask class and then I move all my code about the initialize, the request, the response to the AsyncTask class. ตอนรันตอนท้ายๆน้ำตาจิไหล my code worked... TT and by the conclusion the sungyeol.jpg.jpg file worked
for example
private void testTask(){
.... all code in the main thread particularly on the requests and responses
from the services
//print the response or the result
//Log.e() makes the message in the android monitor red like an error
Log.e("Response:", [responseparameter.toString()]);
}
//create the inherited class from the AsyncTask Class
//(you can create within your activity class)
class AsyncTaskRunner extends AsyncTask<String,String,String>{
#Override
public String doInBackground(String ... input){
testTask(); // call the testTask() method that i have created
return null; // this override method must return String
}
}
//I've created a button for running the task
public void buttonTask(View view){
AsyncTaskRunner runner = new AsyncTaskRunner();
runner.execute();
}
for more information about the AsyncTask:
https://developer.android.com/training/basics/network-ops/connecting.html#AsyncTask
http://www.compiletimeerror.com/2013/01/why-and-how-to-use-asynctask.html#.WJdkqVOLTIU
I hope these help :)

getRequestCycle().urlFor not working in panel

I need the URL for a component in wicket. When I use a page it works properly, but when using panel it does not work.
public final class ImageP extends Panel {
public ImageP(String id) {
super(id);
List<Mapp> list = Mapp.loadall(); //load image from database
final Mapp asr = list.get(0);
ByteArrayResource resource = new ByteArrayResource("image/jpeg", asr.getImage());
Image image = new Image("img", resource);
add(image);
System.out.println(getRequestCycle().urlFor(image, IResourceListener.INTERFACE));
}
}
This code does not work and throws an exception, but when I use page instead of panel getRequestCycle().urlFor(image, IResourceListener.INTERFACE) it works properly.

I bet you've got the following exception:
java.lang.IllegalStateException: No Page found for component [Component id = img]
It's because RequestCycle object internally calls getPage() method of the component that's first parameter of the urlFor() method with the following signature:
urlFor(Component component, RequestListenerInterface interface)
In case of calling method urlFor() in the constructor of a panel it's impossible to get page of a panel's child because panel isn't attached to page yet. So Wicket throws "a nice exception".
To fix that problem you just can move your code to the onBeforeRender() method of the panel. Something like that:
#Override
protected void onBeforeRender() {
//
// ... init resource ...
//
Image image = new Image("img", resource);
addOrReplace(image);
System.out.println(getRequestCycle().urlFor(image, IResourceListener.INTERFACE));
super.onBeforeRender();
}
P.S. I also assume that you're using Wicket 1.4 or earlier because there's no RequestCycle.urlFor(component, listener) method in Wicket 1.5 and later. So I think neither your question nor my answer doesn't make sense in that case.

Passing parameters to the view

In my RCP application, I have a View with a TreeViewer for Navigation on the left side and a Folder for my views on the right side. The Perspective looks like this:
public void createInitialLayout(IPageLayout layout) {
layout.setEditorAreaVisible(false);
layout.setFixed(false);
layout.addStandaloneView(NavigationView.ID, false, IPageLayout.LEFT, 0.7f, layout.getEditorArea());
right = layout.createFolder("right", IPageLayout.RIGHT, 0.3f, "com.my.app.views.browser.navigation");
layout.getViewLayout(WallpaperView.Id).setCloseable(false);//dummy view to keep the folder from closing
layout.getViewLayout(WallpaperView.Id).setMoveable(false);
right.addView(WallpaperView.Id);
//add some placeholders for the potential views
right.addPlaceholder(DefaultAdminView.ID+":*");
}
I would like to open different views, based on what the user selects in the navigation tree. Figured that wouldn't be to hard. My Navigation Tree view:
tree = new TreeViewer(composite);
tree.setContentProvider(new BrowserNavigationTreeContentProvider());
tree.setLabelProvider(new BrowserNavigationTreeLabelProvider());
tree.setInput(UserProfileAdvisor.getProject());
//register Mouselistener for doubleclick events
tree.addDoubleClickListener(new IDoubleClickListener(){
#Override
public void doubleClick(DoubleClickEvent event) {
TreeSelection ts = (TreeSelection) event.getSelection();
Object selectedItem = ts.getFirstElement();
String viewId = DefaultAdminView.ID;
//set viewId depending on the selectedItem.class
try {
PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().showView(viewId, String.valueOf(++viewCounter), IWorkbenchPage.VIEW_ACTIVATE);
} catch (PartInitException e) {
ILogHelper.error("The view for the selected object could not be opened", e);
}
}
});
This seems to work fine. There's just one tiny problem:
I need to pass the object (let's say the selectedItem) to my view somehow, in order to let the user interact with its content. How do I do that?
I've seen some examples where some of my colleagues wrote an own View which they placed on the right side. Then they added a CTabFolder, instantiated the views and added them manually. Is there a smarter solution?

Create a new interface, giving it a method like accept( Object parameter ) and make your views implement it.
Then, when you do PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage().showView(viewId, String.valueOf(++viewCounter), IWorkbenchPage.VIEW_ACTIVATE) the method showView returns an IViewPart. Cast this return to your interface and call the accept method.

Use the SelectionService for that, please refer to Eclipse RCP let two views communicate
Implement the SelectionProvider in your "Navigation" and in the opened view you can ask for the selected object from the selection-service (see article)
HTH Tom