What is Android Libcore
I am trying to run my app on a emulator. It used to work but now it does not load properly. The debug error I get is:
When I right click on the Exception line and Copy Value I get:
My app does not have any file io programmed so the exception must relate to something the system requires.
Looking back in the LogCat I get a match for ENOENT, several lines before are:
I cannot see what file it cannot read / write to. I do not have any file IO programmed but I am using sqlite3, maybe to system cannot find the database file.
To get some relief from this error for a while I created a new project in Android Studio. Shut down AS and copied my source files into the new AS project. Then when I ran the new project, the error had gone. It came back after several hours of programming and editing.
I have looked for solutions on the internet for 2 days now without success. Any help would be appreciated.
If I run (not debug) the app on the emulator or the device it works.
If I run / debug on the emulator or the device it crashes with the same libcore exception.
Part conclusion: it is something to do with debugging.
I thought I had come across a workaround:
- I closed the existing AVD
- I ran the AVD from the AS AVD manager
- I re-installed the app: adb install -r C: \ Users ... \ app-debug.apk
- I ran the app from AS by pushing the debug button
This worked once then the libcore error appeared. This workaround is not good, even if it worked, as the edit run / cycle is too long.
I think the only way is to breakpoint the Google source to determine what it is excepting on. I spent much time searching the internet to find out how to do this without success. If anybody can point me to relevant articles I would be grateful.
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