Develop Reference

Huawei Crash Service is not working in when crash happens in my Service

the application I am developing right now is multiprocessed.
If an crash occurs on another screen after calling AGConnectCrash.getInstance from Main Activity,
everything works normally, but if crash happens in the service, the crash is not recognized by the crash service, I cannot get any log or etc.
Is this because Crash Kit doesn't support multiprocessed applications?
Or does Crash Kit not support crashes in the service?
Any advice?

Instead of Activity, can you please add your initialization code to the Application
if (AGConnectInstance.getInstance() == null)
{
AGConnectInstance.initialize(getApplicationContext());
}
Also please kindly check if the crash is related with JAVA or NDK.
Please use the latest version 1.4.0.300 if it's a NDK crash.

java.lang.NoClassDefFoundError being thrown In some devices, but not all

I get Crash Analytics from Google for my Android app and I have been seeing this popup once in a while:
java.lang.NoClassDefFoundError
with regards to trying to open an Intent.
The scenario is, user clicks on button, they my code in the app is:
Intent intent = new Intent(nameOfCurrentActivity.this, nameOfNewActivity.class);
startActivity(intent);
Pretty straightforward stuff. It works fine on nearly all devices, including all the ones I own and have tested on. This new class being started isn't unique in that it requires any weird hardware (IE, not a camera activity), but it does access the internet via an Http request.
I have already researched the following links without gaining a hint towards a solution:
Why am I getting a NoClassDefFoundError in Java?
How to solve java.lang.NoClassDefFoundError?
My question is, how is it possible that this exception is being thrown on some devices (IE, a Samsung tablet), but not other devices? Shouldn't a new intent work on all devices if it works on one?
Thanks!

A lot of times this can be caused by classes running code that is dependent upon it being a certain API level, IE Marshmallow, but the device using it is on a previous API and the check for permissions is either ignored or not included; Like when you click disable inspection.
An example would be, say you are running something like a View.OnScrollChangeListener for a recyclerview. If you are coding and set it:
if(Build.VERSION.SDK_INT > Build.VERSION_CODES.M) {
myRecyclerview.setOnScrollChangeListener(this);
}
But don't include the build if check, it will throw the error. Another example would be if you are using the class itself as the context (this) for setting the scroll listener. If you use the class itself as the context for extending the Scroll listener but are on a device Pre-API 21, it will throw the error when the class loads. The error it throws is, as you probably guessed, NoClassDefError.
This happens because the Class mentioned in the 'future' API doesn't exist yet in the old phone and so it cannot find the class defined.
Check your code to see if anything in the class is requiring a certain API level to function and if it is, check to confirm you included the if checks for build version. Many times before I have disabled inspection because the red lines were bugging me and forgot to go back and add the checks.

I just wanted to add my own experience today. Apparently Supplier<T> exists in Java 8, however implementation of it and running it on Marshmallow generates NoClassDefFoundError. I was able to solve the problem by declaring custom MySupplier<T>. I tried to add as a comment but failed. Thanks for the explanation given by user7293284 above.

Cucumber-JVM Android - Testing Native applications using JUnit

I am having trouble testing native applications (such as Contacts and Settings) using Cucumber-JVM for Android with JUnit. Initially, I got the following message:
"Test run failed: Permission Denial: starting instrumentation ComponentInfo???{com.test.contacts/android.test.InstrumentationTestRunner???} from pid=673, uid=673 not allowed because package com.test.contacts does not have a signature matching the target com.android.contacts"
To solve this problem, I signed the test application with the same keys of the Contacts native android application (shared.x509.pem and shared.pk8) and I also added the following line to the AndroidManifest.xml file (as suggested in How can I sign my application with the system signature key?):
“android:sharedUserId="android.uid.shared"
This seemed to solve the problem.
However, after this change, I only manage to run the first test from a test suite. When the second test is running, it gets lost in the getActivity() method from the class ActivityInstrumentationTestCase2, which my steps definitions class extends. More precisely, it doesn't get out of the mSync.wait() call in the method startActivitySync(Intent intent) from Instrumentation.java. The call to getActivity() calls launchActivityWithIntent(), from InstrumentationTestCase.java, which calls startActivitySync(Intent intent).
I found a similar issue on Why does getActivity() block during JUnit test when custom ImageView calls startAnimation(Animation)?, but the workaround described there doesn’t solve my problem.
My test application is really simple and it only checks the content of the buttons in the activity. I don’t have this problem if I use the same test application to test my own apps, only with native android applications such as Contacts and Settings.
Does anyone know something about this issue and could give me a light on how could I solve it?
Thanks in advance

How can I force a Worklight Android hybrid app to crash?

I know it sounds strange to WANT an app to crash, but I am testing an application that captures app crash data. I would like to create a sample hybrid app that crashes on demand. Typical errors such as divide by zero and null pointer exceptions in the Javascript are handled by the system but the app does not crash. I also tried causing a crash in a Cordova plug-in in Java code but of course that only crashes the plug-in, not the parent app.
Ideas?

I suppose you want to crash the thread in which Worklight runs. In that case, you can go to your AppName.java and throw a runtime exception wherever you want to. It could be onCreate or any other of the Android lifecycle events. (This is in src/com.projectName in your Android project).

invoke requestFeature() after setting content view
try to open activity not declared in androidmanifest.xml
do an action requiring specific permission but do not request this permission in androidmanifest.xml

How to show message like "the application has crashed, but a report is sent to the admin" in android

I am new to android and my application involves lot of internet access and many times when the data that needs to come from a web service is unavailable my application crashes.
I tried to avoid as many cases as possible, but i am not sure if my application is crash free.
I am using an application named "delight circle" and sometimes that application crashes and shows me this Toast:
"The application has crashed and a report is sent to the admin"
and takes me back to the previous activity or previous action, and from here i can use the application normally again.
I have 2 questions:
How to make the application work normally after it crashes once. In my application, if it crashes then it asks me for force close and when i click it, it takes me to the previous activity(or action) but nothing works there, if i try to do anything it asks for force close again, i eventually end up force closing the application from Settings --> Applications --> myApp --> foce close.
How to send a report about what actually caused the application to crash?? Right now i have a lot of logs in every activity so, now if it crashes i can find out the exact reason and solve. But when i release the application how can i do this?
Thank You

You have to use UnCaughtExceptionHandler for this.
Here is a example,
http://trivedihardik.wordpress.com/2011/08/20/how-to-avoid-force-close-error-in-android/
Once you override the Exception Handler, you will be provided with access to the Log and from where, either you can send the error log which you get the from the SatckTrace as an Email or use Apis to do it.

I can give an answer to your second question, that is "How to send a report about what actually caused the application to crash" Try Crittercism in your code. It will help you to find the exact cause of failing the application. Not only that, it has so many features, like Live Stats, Unresolved crashes, Crash alarms and more.