Your project contains error s please fix it before running it

Question

I am developing a simple Android application  But when I run Eclipse  it shows the following error      Your project contains error s   please fix it before running it    I can t find any error in my project or there is no error in my application  There is a red cross under the application name but it is not under another file name   Does anyone else have this issue

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First go to Window -  Show View -  Error Logs in menu  It will display error logs if you have any  Then try to clean the project and build it again

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Recently I came across this error  I was really in a corner with no help  then I figured it out  This error can occur for the following reasons    An error in the project code Improper linking of external library files to the project Most important  if your debug keystore file is expired    The first 2 cases are easily identifiable but the third one is like searching a black box in a dark room    So in addition to Project -  Clean  remove your debug keystore file also   I am using Mac   Eclipse so to remove  I wrote the command rm    android  debug keystore in a terminal

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Simply Deleted my debug certificate under    android debug keystore and Project- gt Clean did solve the problem

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What caused this problem for me was none of the above  but simply that I d left the  debuggable  attribute to false in the manifest xml file after doing a release  D oh   Of course neither the LogCat  Error log  Console  or Problems window alerted me to this

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This is happened to me  After format of my system  When i import project it shows same error  remove first debug keystore file    then goto -  Project -  Project properties -  select library -  remove -  add again libraries   It s working for me

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Delete the  android folder from your Documents amp settings User  on XP and  User  on Win7  Recreate the AVD again and create a new project

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I had the exact same problem after updating the SDK and ADT  My issue was resolved by deleting the  android folder  hidden  under C  Users USERNAME

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I had this exact problem when trying to run the Doodlz app  from the book Android for Programmers  on Mac OS X with Eclipse Juno   After downloading and unzipping the demos from the book  I forgot to change the permission of the files  They were read-only on my system so this was the first issue   The second issue was solved by selecting a build target on Eclipse  This was fixed by going to  Project   Properties   and clicking the Android field on the left panel to be able to select one option as the Project Build Target  which in my case was     Target Name     Vendor         Platform    API Level  gt  Google APIs     Google Inc     4 0 3       15   Then cleaning and rebuilding the project showed no errors    Finally  to run the app right-click the package  at the Package Explorer tab  and then select   Run As   Android Application

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I had this exact same problem  One solution that would work would be to create a brand new project  but I don t think there s any need for that  For me the problem was that the debug certificate that gets auto-generated had expired  Deleting this file allowed Eclipse to rebuild that file  which solved the problem  You can t run an app with an invalid certificate  whether it be a debug or release certificate  Note that cleaning my project did not work  For more information  see   quot Debug certificate expired quot  error in Eclipse Android plugins

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For some reason eclipse only showed a   error on root and didn t specified what error it was   Go in Windows -  Show Views -  Problems  You might find all previous errors there  delete them  do a clean build and build again  You ll see the exact errors   Eclipse shows an error on android project but can find the error

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Well  in my case some libraries were addressed twice in the   Project    Properties    Java Build Path    Libraries  I just had to remove the duplicate and it worked fine without any cleanings or refreshing

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Yes  this is a rather cryptic message  If you ve got a faulty project  say one you ve been working on in the past  then you ll get this message  and no messages in your current project s Problems   Error Log panes    You may just want to run your current project  This may be perfectly fine  Just click on the down arrow to the right of the Run button to select your project

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I had similar problem where I couldn t run my project yet didn t see any problems in the code  In Error Log panel it said something like  Cannot add P  to the list of segments P  in as a parent   Restarting Eclipse solved the problem

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That usually comes from errors in the build path   If you re using eclipse  there is a view you can add that lists all the errors called  Problems      Otherwise  you can try to clean the project  and that usually solves a few problems   Finally  if you add or alter resources from outside your IDE  you ll want to reload the resources and clean   EDIT  Comment by anonymous user   This can also be caused by an out of date  Debug Certificate  fixed as follows   IF ALL FAILS THEN THIS GOTTA BE THE SOLUTION   Delete your debug certificate under    android debug keystore  on Linux and Mac OS X   the directory is something like  USERPROFILE   androidon Windows   The Eclipse plugin should then generate a new certificate when you next try to build a debug package  You may need to clean and then build to generate the certificate   This is also another fix for the  setContentView R layout main    error that says it cannot find R layout main when it is actually generated   R cannot be resolved to a variable      This is also another fix for the error  Your project has errors     and you cannot find any  Clean and rebuild are still necessary after generating a new debug certificate

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If none of the above solution work  you should check the  READ ONLY property of the Project folder  if it is Read-Only  the compiler will not be able to overwrite the resources  R java and other dex APK etc files and hence this will occur   This happened to me and I fixed after a long struggle   Happy Programming

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I saw this with an existing project   I had made a few edits  but hadn t imported anything new   Restarting Eclipse didn t help   Project- gt Clean did solve the problem

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Try changing your workspace  I am not sure this is the exact solution   I did face the same issue for sometime untill i changed my workspace

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I had the same error  when I copied a project to another computer   I then checked all properties of the project on both machines  and the only thing that was different was the order of items in Java Build Path - tab Order and Export   I moved the items Android X X X and Android Dependencies above the other 2 in the list  in my case  src and gen folders  and voila  it worked again   I m not really sure if the different order was actually the problem  but at least changing it  and saving the properties again  seemed to help

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Is there a way to ignore existing errors in project  Something similar what eclipse allows in case of java projects    In my case the errors exist in jni directory  The errors are shown even though ndk-buid succeeds  So all i want to do is to ignore the errors reported by eclipse   If the errors are indeed errors then i should get unresolved symbols during ndk-build    I have ensured standard android includes are there in include path   Also my project is of type android c c      I have two builders associated with the project  1  statndard android builder 2  custom ndk builder that ive explicitly created

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Go to projects menu  click on clean menu item   After that close the eclipse and reopen and try compiling    It is software glitch you find some times

User · Answer

This happened to me when I was experimenting with Maven    Right click project -  Maven -  disable maven nature corrected the problem for me

User · Answer

I have had a similar problem   Under  problems  tab I have found an error saying  Error generating final archive  Debug Certificate expired on 2 22 12 1 49 PM   So my advice is to look in the problems tab to get some more info   Bye

User · Answer

it can also happen if you move required files  Simply check Problems View  menu window - gt  show  view - gt  Problems  as told here

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I come across this error often when I import a new project in my workspace   Reason  Some necessary files  Like R Java  is not generated in its respective packages   Cure  Clean and build projects  All the files that needs to be auto generated will be there on place after building the project   Best Luck

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Simulate your self some error in class  Then save it and it would show more errors than you simulated  For me it was incorrect import and this helped

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In my case  it happens with ADT 22   I choose not to create Activity   After I remove the  appcompat v7  as library project  I works

[android] Your project contains error(s), please fix it before running it

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