I've found some webpage but it does not guide me back to normal android project view.
http://developer.android.com/sdk/installing/studio-androidview.html
I did File => Other Settings => Default Project Structure => Default Settings => OK It make even worse, import library become not function-able.
I also had this problem (creating new project also looked similar to IntelliJ IDEA), got it fixed when I enabled some Android-related plugins.
Go to Preferences (Settings on Windows and Linux) > Plugins and enable Android Support, at a minimum.
Now you will have "Android" option in the Project View.
Try:
View -> Tool Windows -> Project OR the shortcut is alt+1.
If that's not working try:
Window -> Restore Default Layout OR the shortcut is shift+F12.
Also, check that Studio is up to date:
Help -> Check for update...
None of the above solutions worked for me so I fixed this by removing the .gradle and .idea folders from my project.
The square at the bottom left corner of android studio lets you spread the screen or it populates it with side menus.
For me, it happened when I used Kotlin KTS for Gradle files, but created a java library module for this project. After trying to reimport project I got an error:
New Gradle Sync is not supported due to containing buildSrc module
Solution:
Migrate added module to kts
Remove created by Wizard settings.gradle, if you already use settings.gradle.kts
Reimport project
File -> Close project
Android Studio: import project
Show it your current project location
Just had the problem happen to me again. I got the problem solved, but unfortunately I can't confirm the solution, now that it's fix; but I have strong suspicions on what was the cause.
In my case, the problem occurred as a result of reorganizing my project directory. My projects are stored in given directory lets call it "Projects". I renamed that fold to "ProjectsBackup" and created a new "Projects" directory. I then moved selected projects now contained in the "ProjectBackup" directory to the new "Projects" directory. After moving the first project, I used Android Studio to open that project. That's when the problem occurred. I got a message that it couldn't find the gradle-wrapper and offered me the choice to create it. The gradle-wrapper is stored in a directory call "gradle" and its stored in the "Projects" directory. I had not copied that directory over from the "ProjectsBackup" to the new "Projects" directory. At the time, I thought nothing about that since, a new one was created. After trying all the various suggestion in this problem discussion, android studio offered a notification from me to update my "android gradle" plugin. I did the update and after that the "android" view was now available for me to select. The android gradle update fixed the problem.
I unfortunately, can't tell you what changed as a result of the update, nor can I tell you how you can force Android Studio to update or reinstall the android gradle plugin. All I can tell you is that I got lucky that android studio gave me that notification to update the android gradle plugin. Things like "file/project structure" and changing the Android Gradle Plugin Version, didn't fix the problem. What I did notice, was that when I first looked at that, the drop-down list of android gradle versions was an empty list. I manually put one in "3.6.3", but it didn't help. If you run into this problems I would suggest you look at the dates of the two file in the "wrapper" directory and compare those to projects you may have that are working correctly with the android view. I wish I would have checked the date of the wrapper jar file, when it wasn't working. That's what I think might have been wrong (i.e. I got a wrapper.jar file that was incompatible with my version of android studio - unfortunately I can't prove that)
problem solve i have click this button
I have an Android project for which I use the Eclipse IDE and I wanted to try an use the ProGuard tool to obfuscate/shrink my code. Unfortunately I couldn't get it to work with Eclipse throwing up a ProGuard error when I try to export my project.
To resolve this I altered the necessary project properties file to NOT use ProGuard but Eclipse just complained there were errors with the project which needed to be resolved. I tried cleaning the project, refreshing too but all to no avail. As I use a Mercurial for source control I reverted to my last good sources but now Eclipse throws up even more errors which I cannot get rid of:
org.eclipse.core.internal.resources.ResourceException: Resource is out
of sync with the file system: '/XXXXX/AndroidManifest.xml'.
loadAndParseRClass: failed to find manifest package for project
XXXXXXX
I've never been a great fan of Eclipse but how can I clean my project and get it back to a NON proguard state?
I resolved the problem. There's ANOTHER error log in Eclipse called 'Problems' which tells me my Debug certificate has expired on 25/12/2011. Handy how Eclipse labels this as a 'problem' and not an error and gives no indocation other that a red x that there's some sort of problem!
Anyway I resolved this by going here.
Make sure you Refresh your project so that the state of your Workspace/IDE agrees with your state on disk (Right click on the project and select "Refresh"). This will get rid of the first error you have.
And then just do a Team -> Revert on your projects and select the files that you have changed and want to revert to the checked-in version.
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?
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.
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.
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.
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->Clean did solve the problem.
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.
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......
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.
it can also happen if you move required files. Simply check Problems View (menu window -> show view -> Problems) as told here
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:
"Debug certificate expired" error in Eclipse Android plugins
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.
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.
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.
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
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.
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
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
> 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
Simply Deleted my debug certificate under ~/.android/debug.keystore and Project->Clean did solve the problem.
Delete the .android folder from your Documents&settings\User\ on XP and \User\ on Win7. Recreate the AVD again and create a new project.
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..
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...
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\
This happened to me when I was experimenting with Maven.
Right click project -> Maven -> disable maven nature
corrected the problem for me.
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.
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.
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.
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.
I have a problem I can't seem to get around. I've created a project in Eclipse (I recreated it from another project that I thought was corrupted). There are no visible errors in any of the files, including the .xml files. However, the project root [project name] itself has an error (red 'x') and so I can't run it.
On a side note, in the default properties file the line:
target=android-4 is underlined in red with the note that 'android' is not spelled correctly. I have not altered this file since it was generated.
Any clues? Target is 1.6, sdk 4. And I'm new at this :)
You may have already tried this unsuccessfully, but if not, you might want to try the Android Tools > Fix Project Properties action from the context menu of the project root.
Eclipse also thinks android-4 is misspelled in my default.properties, so I doubt that is the cause of your build problem.
Does the Problems view describe any issues? (Window->Show View->Problems)
You could also try cleaning the project in eclipse. Project->Clean..
if the error message you get is
The project cannot be built until the build path errors are resolved.
this might help:
Open the Project -> Properties
Select Java Build Path -> Libraries
Add any new library (to be deleted later) -> OK
Wait for the workspace to refresh or force a refresh
The error should go away
Remove the dummy library
You can stop the spelling error by adding that word to a user dictionary, but a spelling error wouldn't prevent a run.
I created a Hello world app but get this strange error:
The project cannot be built until the build path errors are resolved
I haven't changed the project, jut created it and tried to run it.
to avoid that annoying problem i have 3 solutions that worked for me.
Solution 1)
delete your generated R.java file
inside your gen/ folder
Solution 2)
a)Delete your project from Eclipse
(i said ONLY from Eclipse, uncheck option: Delete project
contents on disk)
b) import your project to Eclipse:
file > Import > Existing Projects into
Workspace (Look for your project
previously deleted from Eclipse) >
Finish.
Solution 3)
make Solution 1 then Solution 2
It is either a spurious message you can solve by forcing Eclipse to recompute its library paths
I found the resolution for this at Scott D. Strader's blog.
To summarize the solution I only needed to add a library to my project and then remove it to force Eclipse to perform the necessary actions to resolve the problem. I would post the detailed steps here but I don't want to steal his content.
The resolution was to force a resave of the selected projects (and their .classpath files):
Open the project properties
Select Java Build Path > Libraries
Add a new, arbitrary library (to be deleted later) > OK
Wait for the workspace to refresh (or force a refresh of the project)
The error(s) will go away
Remove the dummy library
Note: as the OP mentions, a simple restart of the IDE can be enough.
Or you actually miss one critical library like a JRE library:
I needed to add the JRE library to the project for it to run. Not sure if this was due to the updated version or something else…. Any way this fixed the issue:
Project > Properties
Java Build Path
Libraries tab
Click add library
Select JRE System Library
Next
Finish
Sounds like you are missing an import or a jar. In your project in the project explorer there should be a red x on the file icon that contains the error.
In addition to the listed answers, there is one other scenario I've seen this error appear when using the sample projects included with the Android SDK. For some reason, the generated R.java file can be invalid or corrupt. You can get around it by expanding the "gen" folder in the Package Explorer and deleting the R.java file. It will immediately get regenerated and the error goes away.
Right click on your project, choose "Build Path", "Configure Build Path" -> and choose Android 2.2, or that target you specified when you created your project
I have had similar issues. for me simply closing the emulator and re-running the project works