instrumentation | extensible java agent framework that instruments | Bytecode library
kandi X-RAY | instrumentation Summary
kandi X-RAY | instrumentation Summary
An extensible java agent framework that instruments programs running on the JVM (modifying the bytecode at class loading time), with the purpose of capturing method invocation events (start, finish, errors ...) and notifying custom listeners.
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Top functions reviewed by kandi - BETA
- Initializes the premain
- Generates instructions for a class reference
- Get the store instruction instruction
- Get the load instruction for the given type
- Views out the bytecode of the given bytecode
- Invokes onStart method
- Called when the object is finished
- Called when a throwable is uncatched
- Invokes the method on void finish
- Gets the source source
- Called when a throwable is thrown
instrumentation Key Features
instrumentation Examples and Code Snippets
Lines of Code : 39License : Permissive (Apache-2.0)
Copypackage mypackage;
public class MyInterceptor extends Interceptor {
@Override
public void init(String arg) {
System.out.println("Interceptor args: " + arg);
}
@Override
public boolean interceptClass(String className, by public Object foo(Object bar){
return new Object();
}
public Object foo(Object bar){
onStart(bar);
try{
Object ret = new Object();
onFinished(ret);
return ret;
} catch(Throwable th){
onThrowable(th);
org.brutusin
instrumentation
Community Discussions
Trending Discussions on instrumentation
QUESTION
I'm getting following error on some devices while opening url. I don't get any error on my devices but many devices are.
...ANSWER
Answered 2021-May-11 at 11:27A few notes on this issue:
Detecting non-browser apps as browsersThey query for browsers can detect non-browser applications, which will lead the an ActivityNotFoundException when launching the Custom Tab. See this issue for an example.
When querying for packages that can handle browser intents, I recommend using the below:
QUESTION
I want to use navigation bottom menu with using navHostFragment in main activity. But when I run the program ,it stops on setContent in onCreat method MainActivity java code. I try to use bindig class insted setContent directly but nothing changes.
this is MainActivity.java
...ANSWER
Answered 2021-Jun-14 at 19:33It seems that your HomeFragment doesn't have no parameters constructor.
If you want to use fragment that requires constructor parameters you need to provide FragmentFactory to navigation component.
Add empty constructor HomeFragment() to HomeFragment, and it should work.
QUESTION
During one of the launches of the application, log issued such a stack of errors:
...ANSWER
Answered 2021-Jun-14 at 13:53As it was described in the reference:
When creating the NavHostFragment using FragmentContainerView or if manually adding the NavHostFragment to your activity via a FragmentTransaction, attempting to retrieve the NavController in onCreate() of an Activity via Navigation.findNavController(Activity, @IdRes int) will fail. You should retrieve the NavController directly from the NavHostFragment instead.
Looks like you should use
QUESTION
The app has:
- ListView listing player names from a DB table (only one column, so it is primary key)
- EditText to write the new name
- Button to update the name of player in the list
*there are more things, but i don´t want to make it more messy
I can click a name from the list and write a new name in the EditText. When you press the button that name is updated in the list.
Everything works correctly, but there is a problem. When I write a name that it is already in the list the app fails because primary keys cannot be repeated.
Is there some way to say "if EditText text already exists in the DB... then show a toast"
I already tried "if result of db.update is -1...then show a toast", but it doesn´t work.
This is the method in MainActivity:
...ANSWER
Answered 2021-Jun-11 at 22:09Issues
You have a UNIQUE index on the NUM_JUG column (perhaps implicit if NON_JUG is defined with PRIMARY KEY) and you are using the standard update method which uses the default conflict action of ABORT and therefore fails if an attempt is made to duplicate a NOM_JUG value.
As secondary issue is that the SQLiteDatabase update method returns the number of updates (see extract and link below) (same for updateWithOnConflict). The number returned will never be -1 it will be 0 or more (0 indicating that no updates have been applied).
As per SQLite Database - Update
Returns
int the number of rows affected
Fix
To fix the main issue you should use the updateWithOnConflict method. This takes a 4th parameter a conflict and you probably want IGNORE so you could use :-
QUESTION
I am following this tutorial to create graphs for an app I am developing, but the app keeps crashing and provides the following error message.
...ANSWER
Answered 2021-Jun-11 at 21:13This line:
QUESTION
Stacktrace:
...ANSWER
Answered 2021-Jun-11 at 19:23As per the documentation on launch():
This method throws
ActivityNotFoundExceptionif there was no Activity found to run the given Intent.
While any of the ActivityResultContracts (such as the GetContent one you're using) should be available on every device, users may be running a custom build of Android that removes the apps / system utilities that handle these common intents or the user may have manually disabled the app (this is more common with things like a Browser or Camera app than this particular case).
Therefore you should consider surrounding your call to launch() with a try/catch block that catches an ActivityNotFoundException and informs the user that their device does not support this functionality.
QUESTION
I have been trying to resolve an issue being thrown at runtime where the recyclerview I am using is null. From most examples of this error message I have seen online it is usually when using a RecyclerView is being used in a fragment. This RecyclerView is just being used in a normal Kotlin Activity.
Error When OrderActivity.kt is opened
...ANSWER
Answered 2021-Mar-01 at 12:55setContentView(R.layout.activity_main)
QUESTION
This piece of Code is used to iterate through a node-structure, but what does the arrow-operator do here, and why does it return the next element?
...ANSWER
Answered 2021-Jun-09 at 13:45The PostgreSQL executor produces result tuples (stored in a TupleTableSlot) "on demand". If you need the next result row from an execution plan node, you call its ExecProcNode function, which will return the desired result. This will in turn call ExecProcNode on other, lower plan nodes as needed.
The struct member ExecProcNode is of type ExecProcNodeMtd, which is defined as
QUESTION
I run my Android app (based on Java), and it works. Next, I add to my app code:
FirebaseFirestore fdb = FirebaseFirestore.getInstance();
This code I got from the official Android site https://firebase.google.com/docs/firestore/quickstart
App runs, but next the running device shows the message "app has stopped".
I use a device simulator available in Android Studio.
It is my first Android app, and I can't understand what is going.
----Trace------ 2021-06-08 20:57:30.186 7155-7155/? D/AndroidRuntime: >>>>>> START com.android.internal.os.RuntimeInit uid 2000 <<<<<< 2021-06-08 20:57:30.188 7155-7155/? D/AndroidRuntime: CheckJNI is ON 2021-06-08 20:57:30.210 7155-7155/? W/art: Unexpected CPU variant for X86 using defaults: x86 2021-06-08 20:57:30.214 7155-7155/? D/ICU: No timezone override file found: /data/misc/zoneinfo/current/icu/icu_tzdata.dat 2021-06-08 20:57:30.229 7155-7155/? E/memtrack: Couldn't load memtrack module (No such file or directory) 2021-06-08 20:57:30.229 7155-7155/? E/android.os.Debug: failed to load memtrack module: -2 2021-06-08 20:57:30.230 7155-7155/? I/Radio-JNI: register_android_hardware_Radio DONE 2021-06-08 20:57:30.239 7155-7155/? D/AndroidRuntime: Calling main entry com.android.commands.am.Am
...ANSWER
Answered 2021-Jun-09 at 03:39At the end of your log, just before the initial crash. there is a warning:
Default FirebaseApp failed to initialize because no default options were found. This usually means that com.google.gms:google-services was not applied to your gradle project.
simply adding com.google.gms:google-services should fix any issues you have, if you have issues, ensure your Gradle cache is cleared or run without the build cache
--no-build-cache
QUESTION
I just upgraded Mockito from 3.10.0 to 3.11.0 in our Android project, and now, running instrumentation tests crashes with the exception below. Any suggestion?
...ANSWER
Answered 2021-Jun-07 at 12:34The issue is known to the mockito project and reported there: https://github.com/mockito/mockito/issues/2316
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install instrumentation
You can use instrumentation like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the instrumentation component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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