I met a OOM-issue of FAN native ads with the latest version 4.28.0.I want the FAN native ads refresh every 10 seconds,so I create a new instance of NativeAd and load ad every 10s.Implemented as the official docs says. I reproduced this issue in official demo too.To reproduce easily,I changed the interval time from 10s to 2s. here is the sample code of my test:
private void showNativeAd() {
nativeAd = new NativeAd(getContext(), mAdunit);
nativeAd.setAdListener(new AdListener() {
#Override
public void onError(Ad ad, AdError error) {
// Ad error callback
Log.e(TAG,"failed-->" + error.getErrorMessage());
//refresh after 2s
requestDelay(2000);
}
#Override
public void onAdLoaded(Ad ad) {
Log.e(TAG,"loaded-->");
// Add the Ad view into the ad container.
//...
//refresh after 2s
requestDelay(2000);
}
#Override
public void onAdClicked(Ad ad) {
// Ad clicked callback
}
#Override
public void onLoggingImpression(Ad ad) {
// On logging impression callback
}
});
// Request an ad
nativeAd.loadAd();
}
private void requestDelay(int millseconds){
if (handler == null){
handler = new Handler(Looper.getMainLooper());
}
handler.postDelayed(new Runnable() {
#Override
public void run() {
showNativeAd();
}
},millseconds);
}
It is running well at the beginning, but about an hour later,crashed.here is the crash log:
java.lang.OutOfMemoryError: pthread_create (1040KB stack) failed: Try again
at java.lang.Thread.nativeCreate(Native Method)
at java.lang.Thread.start(Thread.java:1063)
at java.util.concurrent.ThreadPoolExecutor.addWorker(ThreadPoolExecutor.java:920)
at java.util.concurrent.ThreadPoolExecutor.execute(ThreadPoolExecutor.java:1327)
at android.os.AsyncTask.executeOnExecutor(AsyncTask.java:590)
at com.facebook.ads.internal.m.b$1.run(Unknown Source)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:145)
at android.app.ActivityThread.main(ActivityThread.java:6145)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1399)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:1194)
Can anyone help me?
this issue seems be fixed in the latest version v4.28.1.
Related
I managed to setup an Hystrix Command to be called from an Undertow HTTP Handler:
public void handleRequest(HttpServerExchange exchange) throws Exception {
if (exchange.isInIoThread()) {
exchange.dispatch(this);
return;
}
RpcClient rpcClient = new RpcClient(/* ... */);
try {
byte[] response = new RpcCommand(rpcClient).execute();
// send the response
} catch (Exception e) {
// send an error
}
}
This works nice. But now, I would like to use the observable feature of Hystrix, calling observe instead of execute, making the code non-blocking.
public void handleRequest(HttpServerExchange exchange) throws Exception {
RpcClient rpcClient = new RpcClient(/* ... */);
new RpcCommand(rpcClient).observe().subscribe(new Observer<byte[]>(){
#Override
public void onCompleted() {
}
#Override
public void onError(Throwable throwable) {
exchange.setStatusCode(StatusCodes.INTERNAL_SERVER_ERROR);
exchange.endExchange();
}
#Override
public void onNext(byte[] body) {
exchange.getResponseHeaders().add(Headers.CONTENT_TYPE, "text/plain");
exchange.getResponseSender().send(ByteBuffer.wrap(body));
}
});
}
As expected (reading the doc), the handler returns immediately and as a consequence, the exchange is ended; when the onNext callback is executed, it fails with an exception:
Caused by: java.lang.IllegalStateException: UT000127: Response has already been sent
at io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:122)
at io.undertow.io.AsyncSenderImpl.send(AsyncSenderImpl.java:272)
at com.xxx.poc.undertow.DiyServerBootstrap$1$1.onNext(DiyServerBootstrap.java:141)
at com.xxx.poc.undertow.DiyServerBootstrap$1$1.onNext(DiyServerBootstrap.java:115)
at rx.internal.util.ObserverSubscriber.onNext(ObserverSubscriber.java:34)
Is there a way to tell Undertow that the handler is doing IO asynchronously? I expect to use a lot of non-blocking code to access database and other services.
Thanks in advance!
You should dispatch() a Runnable to have the exchange not end when the handleRequest method returns. Since the creation of the client and subscription are pretty simple tasks, you can do it on the same thread with SameThreadExecutor.INSTANCE like this:
public void handleRequest(HttpServerExchange exchange) throws Exception {
exchange.dispatch(SameThreadExecutor.INSTANCE, () -> {
RpcClient rpcClient = new RpcClient(/* ... */);
new RpcCommand(rpcClient).observe().subscribe(new Observer<byte[]>(){
//...
});
});
}
(If you do not pass an executor to dispatch(), it will dispatch it to the XNIO worker thread pool. If you wish to do the client creation and subscription on your own executor, then you should pass that instead.)
I am trying to use Google Sign-In for my android app from here.
I am able to log-in succesfully with the google account & able to fetch all the details. However, when ever I try to logout it fails with following error :
java.lang.IllegalStateException: GoogleApiClient is not connected yet.
I have read many answers suggesting to create googleClientApi object inside onCreate() and that's what I am doing.I have added callbacks for connected and suspended but the connect never goes into suspended mode.
Following is my code snippet :
public static void doInit(Context ctx, FragmentActivity fragmentActivity) {
GoogleSignInOptions gso = new GoogleSignInOptions.Builder(
GoogleSignInOptions.DEFAULT_SIGN_IN)
.requestEmail()
.build();
mGoogleApiClient = new GoogleApiClient.Builder(ctx)
.enableAutoManage(fragmentActivity , googleAuth)
.addApi(Auth.GOOGLE_SIGN_IN_API, gso)
.addConnectionCallbacks(googleAuth)
.build();
}
public static Intent doGoogleLogIn() {
return Auth.GoogleSignInApi.getSignInIntent(mGoogleApiClient);
}
public static boolean doGoogleLogOut() {
Auth.GoogleSignInApi.signOut(mGoogleApiClient).setResultCallback(
new ResultCallback<Status>() {
#Override
public void onResult(Status status) {
}
});
return true;
}
#Override
public void onConnectionFailed(ConnectionResult connectionResult) {
// An unresolvable error has occurred and Google APIs (including Sign-In) will not
// be available.
Log.d("Signin", "onConnectionFailed:" + connectionResult);
}
#Override
public void onConnected(#Nullable Bundle bundle) {
System.out.println("Connected...");
}
#Override
public void onConnectionSuspended(int i) {
System.out.println("Suspened....");
}
The only thing that is doubtful to me is, when I login and create googleApiClient object, its created from different activity that the one which I am using for logout. I don't suspect this is the reason because when the activity loaded, the isConnected on googleApiClient is returning true. However, the moment I do some UI action(Click on Logout), it starts returning false.
Primary requirement was to login and logout from different activities.
Finally I managed to make it work.
The actual cause of the error is "enableAutoManage" invocation at the time of Building Client object.
The API doc here suggests that it would automatically do the life cycle management by calling methods on onStart & onStop of the activity.
Therefore, if you want to use the same object across different activities then you should avoid calling "enableAutoManage" and invoke apiObject.connect(preferably in onStart of activity) and apiObject.disconnect() or logout (preferably in onStop of activity) manually.
I am having two problems when trying to use "updateMessage" in a JavaFX task.
Issue #1
seems to be a known behavior, but I am not yet sure how exactly I can workaround it.This one is not (yet) critical to me.
The problem is that not all the updates I am performing in a background Task are displayed in the UI (at least the UI does not hang/freezes anymore, which was my initial issue).
My Code of the UI part:
TextArea console = new TextArea();
Button button01 = new Button("Start");
button01.setOnAction(new EventHandler() {
#Override
public void handle(Event event) {
if (ms.getState() == State.READY) {
ms.messageProperty().addListener(new ChangeListener<String>() {
#Override
public void changed(ObservableValue<? extends String> observable,
String oldValue, String newValue) {
console.appendText(newValue+"\n");
}
});
ms.start();
}
}
});
My Service:
public class MyService extends Service<Object> {
#Override
protected Task createTask() {
//here we use "MyTask" first to show problem #1
MyTask ct = new MyTask();
//here we use "MyTask2" first to show problem #2
// MyTask2 ct = new MyTask2();
try {
ct.call();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
System.out.println("MyService end");
return ct;
}
}
My Task (#1)
public class MyTask extends Task<Object> {
#Override
public EventHandler<WorkerStateEvent> call() {
System.out.println("call() is called");
if (Thread.currentThread().getName().equals("JavaFX Application Thread")){//yes, this might not be right, but if I do not do this, my stuff is executed twice because "call()" is called twice, but the textarea area is just updated in the second run (the non javafx application thread).
return null;
} else{
//actually here I want to do some 'heavy' stuff in the background
//and many things of this heavy stuff should be displayed / logged within the UI
//but very likely (hopefully) new messages (updateMessage) will not be send as fast as in the following loop
for (int i=0;i<10000000;i++){
updateMessage("This is update number'"+i+"' from the background thread");
}
Platform.runLater(new Runnable() {
#Override
public void run() {
try{
//here is the chance to get back to the view
}finally{
}
}
});
return null;
}
}
This basically works, but not every single loop is displayed in the UI.
How do I (correctly) make sure every loop is displayed?
Screenshot: Messages are displayed but not for every loop
Issue #2
Currently blocks my attempt to bring my little text-based game into a JavaFX application.
The main problem is that I am able to call "updateMessage" from the Task directly (see above), but not from a another (sub-)class which I would need to bring all message updates from my game (each message describes the progress of the game) to the UI.
The Task I use (Task #2):
public class MyTask2 extends Task<Object> {
#Override
public EventHandler<WorkerStateEvent> call() {
// ...
UITools myTools = new UITools();
myTools.logToUITest("Just one simple message");
// ...
Platform.runLater(new Runnable() {
#Override
public void run() {
try{
//here is the chance to get back to the view
}finally{
}
}
});
return null;
}
and the (sub-)class that I want to use to do the updateMessage (actually in my little game there would be even more classes that are called during the game and almost all of them trigger an update/message).
public class UITools {
public void logToUITest(String message){
updateMessage(message);
//how to allow 'updateMessage' from the Task to be executed from here?
}
This already results in "The method updateMessage(String) is undefined...".
How could I make it possible to call the updateMessage outside of the Task itself?
updateMessage() can only be called from within the call() method of a Task. It's a constraint imposed by the design of the Task class.
The missed message updates are due to the fact that there are too many updates and not all of them are forwarded to the event queue. Try to reduce the number of updates or sleep for a little while to separate them out in time
I have an AppCompatActivity that has 3 tabs using FragmentTabHost. One of the tabs uses LocationServices. I would like to have the smoothest possible user experience:
If the LocationService is off in the android system, and only if the user chooses the tab that needs the Location I would like to display the AlertDialog to let the user turn on the Location in the system settings.
I have a helper class that is supposed to do all this and it does work in 3 other places in my app. In those 3 places it works "directly" in the Activity, however in this place it needs to work "within" the Fragment of the tab.
The problem is that if I have the line:
builder.enableAutoManage(activity, 0, this);
then builder.build() throws an exception: IllegalStateException: Recursive entry to executePendingTransactions
Any idea how can I achieve my goal?
Here are some related code fragments:
public class CityPreferences extends AppCompatActivity {
private FragmentTabHost mTabHost;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
mTabHost = (FragmentTabHost) findViewById(android.R.id.tabhost);
mTabHost.setup(this, getSupportFragmentManager(), R.id.realtabcontent);
mTabHost.addTab(
mTabHost.newTabSpec("available_cities")
.setIndicator(getString(R.string.tab_all_cities))
, AvailableCityFragment.class, null);
mTabHost.addTab(
mTabHost.newTabSpec("nearby_cities")
.setIndicator(getString(R.string.tab_nearby_cities))
, NearbyCityFragment.class, null);
}
}
In NearbyCityFragment I have this 1 line of code:
class NearbyCityFragment extends Fragment {
...
LocationServiceHelper.getInstance().startOrDisplayDialog(getActivity());
(I tried it in onAttach, onStart, onResume)
And here's my helper class' function:
public class LocationServiceHelper implements
GoogleApiClient.OnConnectionFailedListener,
GoogleApiClient.ConnectionCallbacks {
public boolean startOrDisplayDialog(#NonNull final FragmentActivity activity) {
final boolean servicesConnected = GooglePlayServicesHelper.checkOrDisplayDialog(activity);
if (servicesConnected) {
final boolean isEnabled = isLocationEnabledInSystem(activity);
if (isEnabled) {
if (null == mGoogleApiClient) {
mContext = activity;
mActivity = activity;
final GoogleApiClient.Builder builder = new GoogleApiClient.Builder(mContext)
.addApi(LocationServices.API)
.addConnectionCallbacks(this)
.addOnConnectionFailedListener(this);
// the next line seems to cause the problem:
builder.enableAutoManage(activity, 0, this);
mGoogleApiClient = builder
.build();
}
return start();
} else {
final Dialog dialog = getLocationDisabledDialog(activity);
GooglePlayServicesHelper.showDialog(dialog, activity);
}
}
return false;
}
And finally the exception:
06-10 10:23:04.831 26725-26725/com.fletech.android.redalert.debug E/AndroidRuntime﹕ FATAL EXCEPTION: main
Process: com.fletech.android.redalert.debug, PID: 26725
java.lang.IllegalStateException: Recursive entry to executePendingTransactions
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1473)
at android.support.v4.app.FragmentManagerImpl.executePendingTransactions(FragmentManager.java:490)
at com.google.android.gms.common.api.g.a(Unknown Source)
at com.google.android.gms.common.api.GoogleApiClient$Builder.gI(Unknown Source)
at com.google.android.gms.common.api.GoogleApiClient$Builder.build(Unknown Source)
at com.fletech.android.redalert.helper.LocationServiceHelper.startOrDisplayDialog(LocationServiceHelper.java:113)
at com.fletech.android.redalert.city.NearbyCityFragment.onAttach(NearbyCityFragment.java:44)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:907)
at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1138)
at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:740)
at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1501)
at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:458)
at android.os.Handler.handleCallback(Handler.java:739)
at android.os.Handler.dispatchMessage(Handler.java:95)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5257)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
I believe you must use a unique clientId each time you enable auto manager. From the documentation:
clientId - A non-negative identifier for this client. At any given time, only one auto-managed client is allowed per id. To reuse an id you must first call stopAutoManage(FragmentActivity) on the previous client.
I have a activity with 3 actionbar tabs. Each tab contains a webview which loads a URL at Fragment oncreate(). Everything is working fine but if i switch tabs quickly the onpagefinished appears after the tab change so when the calling fragment is gone, resulting in an NullPointerException. Is there a way to prevent this?
I tried in my fragment:
public void onDestroy() {
super.onDestroy();
try {
myWebView.stopLoading();
} catch (Exception e) {
}
try {
myWebView.clearView();
} catch (Exception e) {
}
and in my tab listener:
onTabSelected(Tab tab, FragmentTransaction ft) {
// StartActivity.mViewPager.setCurrentItem(tab.getPosition());
if (FinishedLoading == true){
ft.replace(R.id.fragment_container, fragment);
}
}
Both options don't prevent the APP to crash.
The error i recieve:
java.lang.NullPointerException
at com.***.Fragment1$MyWebViewClient.onPageFinished(Fragment1.java:233)
at android.webkit.CallbackProxy.handleMessage(CallbackProxy.java:389)
at android.os.Handler.dispatchMessage(Handler.java:99)
at android.os.Looper.loop(Looper.java:137)
at android.app.ActivityThread.main(ActivityThread.java:4898)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:511)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:1006)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:773)
at dalvik.system.NativeStart.main(Native Method)
I was facing this issue as well. If you haven't solved it, maybe you would like to try implementing onPause in your fragment like this:
#Override
public void onPause() {
if (webview.isShown() == false) {
webview.stopLoading();
}
super.onPause();
}
#Override
public void onResume() {
super.onResume();
}
Where webview is your webview