Develop Reference

Android - Setting up OneSignal's setNotificationOpenedHandler on MainActivity does not launch app

I'm working on an Android app (Java; minSdkVersion 21) and using One Signal to receive notifications. The One Signal notification will send a payload with enough data to build an Episode object which the setNotificationOpened handler will use to navigate to a particular episode in the app.
I'm doing this in MainActivity (the app has this one activity, everything else is fragments):
#Override
protected void onCreate(Bundle savedInstanceState) {
...
OneSignal.setNotificationOpenedHandler(
new OneSignal.OSNotificationOpenedHandler() {
#Override
public void notificationOpened(OSNotificationOpenedResult result) {
OSNotification notification = result.getNotification();
try {
String notificationType = (String) notification.getAdditionalData().get("type");
if (notificationType.equals("episode")) {
Episode episode = NotificationHandler.setUpEpisode(notification.getAdditionalData()); // returns an episode object
Bundle bundle = new Bundle();
bundle.putSerializable("episode", episode);
bundle.putString("title", episode.getName());
navController.navigate(R.id.action_global_episodeFragment, bundle);
}
} catch (JSONException e) {
e.printStackTrace();
}
}
});
...
This setup works fine when the app is in the background. The user clicks on the notification, the app comes to the foreground and navigates to the appropriate episode. However, when the app is closed and the user clicks on the notification, the app is never launched.
I initially tried to put this handler in the AppController instead of MainActivity but couldn't find a way of navigating since R was not available at this point.
How can I get the above code to also work in cases where the app is closed?
}

'MyApp' has stopped and forcing to close

I'm developing Android app on Android studio using Opencv library and when I try to open my app it opens then right after that it closes and displaying crash message. I'm new on mobile development
Using : OpenCV310, Android Studio 3.0,
public class ScanLicensePlateActivity extends AppCompatActivity {
protected AnylineOcrScanView scanView;
private LicensePlateResultView licensePlateResultView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//Set the flag to keep the screen on (otherwise the screen may go dark during scanning)
getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
setContentView(R.layout.activity_anyline_ocr);
String license = getString(R.string.anyline_license_key);
// Get the view from the layout
scanView = (AnylineOcrScanView) findViewById(R.id.scan_view);
// Configure the view (cutout, the camera resolution, etc.) via json
// (can also be done in xml in the layout)
scanView.setConfig(new AnylineViewConfig(this, "license_plate_view_config.json"));
// Copies given traineddata-file to a place where the core can access it.
// This MUST be called for every traineddata file that is used
// (before startScanning() is called).
// The file must be located directly in the assets directory
// (or in tessdata/ but no other folders are allowed)
scanView.copyTrainedData("tessdata/GL-Nummernschild-Mtl7_uml.traineddata",
"8ea050e8f22ba7471df7e18c310430d8");
scanView.copyTrainedData("tessdata/Arial.traineddata", "9a5555eb6ac51c83cbb76d238028c485");
scanView.copyTrainedData("tessdata/Alte.traineddata", "f52e3822cdd5423758ba19ed75b0cc32");
scanView.copyTrainedData("tessdata/deu.traineddata", "2d5190b9b62e28fa6d17b728ca195776");
// Configure the OCR for license plate scanning via a custom script file
// This is how you could add custom scripts optimized by Anyline for your use-case
AnylineOcrConfig anylineOcrConfig = new AnylineOcrConfig();
anylineOcrConfig.setCustomCmdFile("license_plates.ale");
// set the ocr config
scanView.setAnylineOcrConfig(anylineOcrConfig);
// initialize with the license and a listener
scanView.initAnyline(license, new AnylineOcrListener() {
#Override
public void onReport(String identifier, Object value) {
// Called with interesting values, that arise during processing.
// Some possibly reported values:
//
// $brightness - the brightness of the center region of the cutout as a float value
// $confidence - the confidence, an Integer value between 0 and 100
// $thresholdedImage - the current image transformed into black and white
// $sharpness - the detected sharpness value (only reported if minSharpness > 0)
}
#Override
public boolean onTextOutlineDetected(List<PointF> list) {
// Called when the outline of a possible text is detected.
// If false is returned, the outline is drawn automatically.
return false;
}
#Override
public void onResult(AnylineOcrResult result) {
// Called when a valid result is found
String results[] = result.getText().split("-");
String licensePlate = results[1];
licensePlateResultView.setLicensePlate(licensePlate);
licensePlateResultView.setVisibility(View.VISIBLE);
}
#Override
public void onAbortRun(AnylineOcrError code, String message) {
// Is called when no result was found for the current image.
// E.g. if no text was found or the result is not valid.
}
});
// disable the reporting if set to off in preferences
if (!PreferenceManager.getDefaultSharedPreferences(this).getBoolean(
SettingsFragment.KEY_PREF_REPORTING_ON, true)) {
// The reporting of results - including the photo of a scanned meter -
// helps us in improving our product, and the customer experience.
// However, if you wish to turn off this reporting feature, you can do it like this:
scanView.setReportingEnabled(false);
}
addLicensePlateResultView();
}
private void addLicensePlateResultView() {
RelativeLayout mainLayout = (RelativeLayout) findViewById(R.id.main_layout);
RelativeLayout.LayoutParams params = new RelativeLayout.LayoutParams(
ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
params.addRule(RelativeLayout.CENTER_HORIZONTAL, RelativeLayout.TRUE);
params.addRule(RelativeLayout.CENTER_VERTICAL, RelativeLayout.TRUE);
licensePlateResultView = new LicensePlateResultView(this);
licensePlateResultView.setVisibility(View.INVISIBLE);
mainLayout.addView(licensePlateResultView, params);
licensePlateResultView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
startScanning();
}
});
}
private void startScanning() {
licensePlateResultView.setVisibility(View.INVISIBLE);
// this must be called in onResume, or after a result to start the scanning again
scanView.startScanning();
}
#Override
protected void onResume() {
super.onResume();
startScanning();
}
#Override
protected void onPause() {
super.onPause();
scanView.cancelScanning();
scanView.releaseCameraInBackground();
}
#Override
public void onBackPressed() {
if (licensePlateResultView.getVisibility() == View.VISIBLE) {
startScanning();
} else {
super.onBackPressed();
}
}
#Override
protected void onDestroy() {
super.onDestroy();
}}
source code is here.
If possible please help.
Logcat error shown here

Ideally more information regarding the error would be best i.e the opencv library version etc. Given it seems to be an Android issue, I would advise
File and issue or view issues pertaining to this error on their github page. Search for related Android errors to see if they match.
IF you cannot find a related error, file an issue there.

WeChat InApp payment screen shows up only for first time

I'm trying to implement WeChat InApp payments in our app. But we are struggling to make it work.
I will try to sum it up real quick.
Given user is not logged in, WeChat login screen show up every time.
Given user is logged in, when clicked on pay button for a first time, WeChat order info screen shows up, but when clicked back, and clicked on pay button again (in our app), WeChat screen doesn’t show up.
We did implemented WXPayEntryActivity but neither onCreate, onNewIntent nor onResp are called. And yes, this activity is sending broadcast but neither toast nor log shows up.
I tried call registerApp on application started, I tried it just before creating payment req.
Did anybody come across this issue?
Can WeChat help me directly?
Want to see some code?
This is my payment class
public class WXInAppPayment {
public void startPayment(AppCompatActivity activity, PaymentDataResponse data) {
IWXAPI api = getApi(activity);
if (api.isWXAppInstalled()) {
api.sendReq(getPayRequest(data));
} else {
// Showing toast
}
}
public WXReceiver getReceiver() {
// returning BR for wechat payments
return new WXReceiver();
}
public IntentFilter getIntentFilter() {
IntentFilter intentFilter = new IntentFilter();
intentFilter.addAction(Constants.WE_CHAT_BR_ID);
return intentFilter;
}
private IWXAPI getApi(AppCompatActivity activity) {
final IWXAPI api = WXAPIFactory.createWXAPI(activity, null);
api.registerApp(Constants.WE_CHAT_APP_ID);
return api;
}
private PayReq getPayRequest(PaymentDataResponse data) {
PayReq request = new PayReq();
request.appId = dataFromAPI.appId;
request.partnerId = dataFromAPI.partnerId;
request.prepayId = dataFromAPI.prepayId;
request.packageValue = dataFromAPI.packageValue;
request.nonceStr = dataFromAPI.nonceStr;
request.timeStamp = dataFromAPI.timestimeStampamp;
request.sign = dataFromAPI.sign;
return request;
}
}
And this is WXPayEntryActivity. In manifest:
<activity android:name=".wxapi.WXPayEntryActivity"
android:label="#string/app_name"
android:exported="true"/>
And class:
public class WXPayEntryActivity extends Activity implements IWXAPIEventHandler {
private final String TAG = getClass().getSimpleName();
private IWXAPI api;
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
api = WXAPIFactory.createWXAPI(this, Constants.WE_CHAT_APP_ID);
api.handleIntent(getIntent(), this);
}
#Override
protected void onNewIntent(Intent intent) {
super.onNewIntent(intent);
setIntent(intent);
api.handleIntent(intent, this);
}
#Override
public void onReq(BaseReq baseReq) {
Log.e(TAG, "onReq: " + baseReq.transaction);
}
#Override
public void onResp(BaseResp baseResp) {
Log.e(TAG, "onResp: " + baseResp.errStr + " " + baseResp.errCode);
Intent intent = new Intent(Constants.WE_CHAT_BR_ID);
intent.putExtra("error_code", baseResp.errCode);
intent.putExtra("error_string", baseResp.errStr);
sendBroadcast(intent);
finish();
}
}

I went through same issue... Your code look fine.
lets cover the scenario:
This is normal ... if user is not logged in.. Wechat App will
redirect to login screen
"Only first time payment passed" happened due to wrong packageName. consider these checks:
You need to use ApplicationId not packageName
WhiteSpace
Debug buildType by default has suffix: .debug to applicatonId
Check AppSign which is MD5 of cert you sign with.. Be careful not to use the default one for debug buildType.
Try to reassign ApplicationId and AppSign it again.(that was our issue 😞) due to hidden WS not visible.
Contact Wechat team support.. they have logs to payment.

Back stack handling in Conductor

I try to use Conductor library but have a problem with backstack.
I have an activity with 4 buttons in bottom navigation panel.
Each of the buttons in ACTIVITY opens 1 of the 4 controllers:
- today news (root controller)
- trending news
- market news
- regulatory news
I need to add all controlers to backstack, and when i tap on the back button i must return to previous controller.
For example:
Today -> Market -> Trending
If i tap on the back button in Trending controller, i must to return to Market e.t.c.
But now activity is closing when i tap on the back in any controller.
How can i implement this behavior?
This is the code in my activity:
#Override
public void navigateToMarketHighlights() {
MarketHighlightsController marketHighlightsController = new MarketHighlightsController();
router.pushController(RouterTransaction.with(marketHighlightsController)
.popChangeHandler(new FadeChangeHandler())
.pushChangeHandler(new FadeChangeHandler()));
}
#Override
public void navigateToTrendingNow() {
TrendingNowController trendingNowController = new TrendingNowController();
router.pushController(RouterTransaction.with(trendingNowController)
.popChangeHandler(new FadeChangeHandler())
.pushChangeHandler(new FadeChangeHandler()));
}
#Override
public void navigateToTodayView() {
TodayController todayController = new TodayController();
router.pushController(RouterTransaction.with(todayController)
.popChangeHandler(new FadeChangeHandler())
.pushChangeHandler(new FadeChangeHandler()));
}
#Override
public void navigateToRegulatoryUpdatesView() {
RegulatoryUpdatesController regulatoryUpdatesController = new RegulatoryUpdatesController();
router.pushController(RouterTransaction.with(regulatoryUpdatesController)
.popChangeHandler(new FadeChangeHandler())
.pushChangeHandler(new FadeChangeHandler()));
}

I guess you just forget to handle onBackPressed() in your Activity
router.handleBack() dealing with backstack navigation, so router pops backstack if this method called and returns true, othervise (e.g backstack is empty) it returns false
#Override
public void onBackPressed() {
if (!router.handleBack()) {
super.onBackPressed();
}
}

Codenameone when I read the qrCode uzing Zxing on Android the application goes back to 'init' and 'start'

I am using Codenameone and ZXing to read a QRCode. When I call the Scanner, my mobile opens the QRCode reader application and I get to read the QRCode except that when android takes me back to my app it goes through init then start statuses. Which moves me back to the login form of my application instead of continuing filling the form that I was in.
Any help on what to do to stay in the same form? Is there something I'm doing wrong? Thanks in advance.
EverproX.addMessage("Before Scan\n");
CodeScanner.getInstance().scanQRCode(new ScanResult() {
public void scanCompleted(String contents, String formatName, byte[] rawBytes) {
EverproX.addMessage("Scan Completed "+contents);
}
public void scanCanceled() {
EverproX.addMessage("Scan Cancelled");
}
public void scanError(int errorCode, String message) {
EverproX.addMessage("Scan Error "+errorCode+" "+message);
}
});
EverproX can be seen as a log class.
By analyzing our log we can say that as soon as we call the CodeScanner.getInstance().scanQRCode() the application is called for 'Destroy'. Then after the scanning is done it goes again through the init and start. It never goes into the scanComplete scanCanceled or scanError Callbacks.
Is it normal that the App is destroyed upon call of CodeScanner? Many thanks.

Inside your codenameone project, you should find a class named (for example MyApp.java) based on your app's name, modify the code to read something like similar to this:
public class MyApp {
private Form current;
public void init(Object context) {
// Pro users - uncomment this code to get crash reports sent to you automatically
Display.getInstance().addEdtErrorHandler(new ActionListener() {
public void actionPerformed(ActionEvent evt) {
evt.consume();
Log.p("Exception in AppName version " + Display.getInstance().getProperty("AppVersion", "Unknown"));
Log.p("OS " + Display.getInstance().getPlatformName());
Log.p("Error " + evt.getSource());
Log.p("Current Form " + Display.getInstance().getCurrent().getName());
Log.e((Throwable) evt.getSource());
Log.sendLog();
}
});
}
public void start() {
if (current != null) {
current.show();
return;
}
new StateMachine("/theme");
}
public void stop() {
current = Display.getInstance().getCurrent();
}
public void destroy() {
current = null;
}
}