Develop Reference

Ionic 4 - install run performed a full build and install since the installation on device does not match the local build on disk

Im trying to generate an APK to test my android build, it used to work before, i dont know what went wrong that it stopped working, whenever i try to run on device either on android studio or my own device, it does not build even though its error clean. App actually installs, but when its about to run it closes down and this message appears
Heres what i got from checking the logcat on Android Studio: https://imgur.com/a/FdE4WMo

Try uninstalling the app from the device and then run it again.
The dev / debug build uses an encryption key that's specific to the machine so I think that maybe you are trying to install a different app over the original one?

Debugging whilst developing JavaFX mobile application with gluon mobile plugin

I am new to javaFx and gluon mobile. In android studio there is the option to debug code whilst it is running on the phone and I was wondering if there is a similar feature for working with intelij and the gluon mobile plugin ? Under the gradle tasks there is a Debug task, which when clicked prints "Listening for transport dt_socket at address: 5005" to the console and waits. Unfortunately there is not a lot of documentation/examples regarding this that I could find. Any help is appreciated.

The Debug task is for desktop only.
It is intended to debug easily on your machine before deploying to mobile, but obviously it will allow tracking down only common issues, and that won't guarantee that the app will work on Android. I.e. using Streams will run on desktop and it will fail on Android.
To debug the app running on Android, the best way is using adb from your Android SDK folder, in the platform-tools folder.
Connect your app to the USB and run it. On a terminal go to that folder and run:
adb logcat -v threadtime
and search through all the messages trying to find out those related to the FXActivity.
You can add print outs in your code so you can easily track them in the logs.
There are other tools like the Android monitor (under Android sdk/tools folder), that will let you add some filters so you can easily go through the app messages.

First make sure you have enabled the Debugging Mode on your phone.
Then in Eclipse e.g., you can create a Debug Configuration of type Remote Java Application which will be attached to the corresponding socket:
You can get the port from the devices view:
Now you have to start your app first, and then start the Debug Configuration

Cordova app deployment on device

I'm using Eclipse to run my android mobile app. The problem is that when modify code the change not appear in the deployed app on device. Remain ever the same app on device.

If you are changing code in yourProject->www folder, then you need to build it first with command prompt /cli
OR you need to directly change the files in yourProject->platforms->...->www before running from Eclipse

android rhino not working on device, works on emulator

general question:
i have an app i'm developing that uses rhino to execute java script code.
when i run it on my emulator it works well but when i install it on my device it crushes and gives a Use *#9900# to take log message.
i am not sure what that error really means.
i have gone over the code and cleared all log and system out commands and added debug=false on the android manifest.
do i need to install on my device any other software,such as an interpreter so it could run java script?

Ranorex test automation issue

Whenever I deploy with Ranorex automation testing tool with an Android tablet device, it shows the following error: "There was a problem parsing the package".

Have you tried to use "ADB install" in order to deploy the APK?
Take a look here to see more about Android testing.