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I am new to Android Java programming. Trying to make a simple app. All goes smootly until i want to add a menu... This is how i tried: After that I added the code

@Override
public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.menu_main, menu);
    return true;
}

No errors, but than any changes I do to menu_main.xml dont go to the app. After a lot of head-scraching i realised Android Studio doesnt read this file... The only way to force it to read the file is to "Reformat Code" on the entire app... Everytime i change this file i have to do it... Restarting Android Studio (even my PC and phone tbh) didnt work. Removing this file didnt help either (AS doesnt even notice the file is gone until I "Reformat Code"). Im guessing that because I manually add this file than it doesnt register as part of the app...? Any help would be appreciated. Thanks!

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if You have problem's like that try to Rebuild Project,

enter image description here

or remove folder 'projectname/app/build'. Temporary file build.

If that won't help You can Invalidate Caches/Restart

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  • "Rebuild Project" gives temporary solution... I'd have to click it everytime I change that xml file. The other solutions dont work at all... wish there was a way to force the rebuild on every app run
    – user4964200
    Commented Nov 24, 2019 at 16:55
  • If You have older version of Android Studio, You can try to disable Instant Run. If it won't help try to disable 'Power Save Mode', Ctrl+Shit+A and type 'Power Save'.
    – SmaQu
    Commented Nov 24, 2019 at 17:19
  • latest versian of Android Studio, disabled instant run and same, power save was never on... i believe Android Studio keeps a list of all files relevant to the project and siply doesnt add the xml to that list
    – user4964200
    Commented Nov 24, 2019 at 17:29

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