Develop Reference

I have this PluginException issue opening Android Studio

I can use Android Studio at beginning when I first installed it. But the below issue showed up when I set SDK environment to the SDE zip folder. I can't open Android Studio at all afterwards and this issue shows up every time.
https://code.google.com/p/android/issues
Error:
Internal error. Please refer to https://code.google.com/p/android/issues
Stacktrace:
java.util.concurrent.CompletionException: com.intellij.diagnostic.PluginException: Fatal error initializing 'com.android.tools.idea.AndroidInitialConfigurator' [Plugin: org.jetbrains.android]
at java.base/java.util.concurrent.CompletableFuture.encodeThrowable(CompletableFuture.java:314)
at java.base/java.util.concurrent.CompletableFuture.completeThrowable(CompletableFuture.java:319)
at java.base/java.util.concurrent.CompletableFuture$AsyncRun.run(CompletableFuture.java:1739)
at com.intellij.openapi.application.TransactionGuardImpl.runWithWritingAllowed(TransactionGuardImpl.java:214)
at com.intellij.openapi.application.TransactionGuardImpl.access$200(TransactionGuardImpl.java:21)
at com.intellij.openapi.application.TransactionGuardImpl$2.run(TransactionGuardImpl.java:196)
at com.intellij.openapi.application.impl.ApplicationImpl.runIntendedWriteActionOnCurrentThread(ApplicationImpl.java:805)
I've tried to add 'disable.android.first.run=true' to idea.properties.
I also tried'netsh winsock reset' in the terminal under Administor.
These two ways all failed. It can open at the beginning. Just after setting the SDK environment.

Android path in the Fileprovider is not recognised

I get this following exception for xlsx, msg and xml
Caused by java.lang.IllegalArgumentException: Failed to find configured root that contains /data/data/myadress/aFile.xlsx
at androidx.core.content.FileProvider$SimplePathStrategy.getUriForFile(FileProvider.java:744)
I saw several issues related but cannot find where is the error
I am reading the official documentation but do not get where can be the bug because do not understand where is going wrong

Failed to find configured root that contains /data/data/myadress/aFile.xlsx
You should serve from the files directory:
/data/data/<packagename>/files/aFile.xlsx

Cannot run an android code on Processing

When I try to run an android code in Processing 2.2.1 Android mode I get the following message:
Error from inside the Android tools, check the console.
And then:
java.io.FileNotFoundException: C:\Users\USER\Documents\Processing\modes\AndroidMode\icons\icon-96.png (The system cannot locate the resource specified)
at java.io.FileInputStream.open(Native Method)
at java.io.FileInputStream.<init>(Unknown Source)
at processing.app.Base.copyFile(Base.java:2698)
at processing.mode.android.AndroidBuild.writeRes(AndroidBuild.java:807)
at processing.mode.android.AndroidBuild.createProject(AndroidBuild.java:169)
at processing.mode.android.AndroidBuild.build(AndroidBuild.java:91)
at processing.mode.android.AndroidMode.handleRunDevice(AndroidMode.java:227)
at processing.mode.android.AndroidEditor$16.run(AndroidEditor.java:513)
BUILD FAILED
C:\Users\USER\AppData\Local\Temp\android9132488509980035650sketch\build.xml:9: The entity name must immediately follow the '&' in the entity reference.
Total time: 0 seconds
What can I do to solve it? I am a total beginner so please try to be as specific and clear as possible.
Thanks!

Program wants this file "C:\Users\USER\Documents\Processing\modes\AndroidMode\icons\icon-96.png" and cannot find it.

Interactive Chart sample from google developers showing error eclipse

I just import project.I get error signs at res and src folders. I decided to create a project from existing code.I still get error.I get errors not for all project but for a few projects,mainly all google samples:
java.lang.reflect.InvocationTargetException
at com.android.ide.eclipse.adt.internal.wizards.newproject.NewProjectCreator.createProjectAsync(NewProjectCreator.java:677)
at com.android.ide.eclipse.adt.internal.wizards.newproject.NewProjectCreator.access$0(NewProjectCreator.java:590)
at com.android.ide.eclipse.adt.internal.wizards.newproject.NewProjectCreator$3.execute(NewProjectCreator.java:400)
at org.eclipse.ui.actions.WorkspaceModifyOperation$1.run(WorkspaceModifyOperation.java:106)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344)
at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:118)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
Caused by: org.eclipse.core.internal.resources.ResourceException: Invalid project description.
at org.eclipse.core.internal.resources.Project.checkDescription(Project.java:175)
at org.eclipse.core.internal.resources.Project.assertCreateRequirements(Project.java:53)
at org.eclipse.core.internal.resources.Project.create(Project.java:287)
at org.eclipse.core.internal.resources.Project.create(Project.java:269)
at com.android.ide.eclipse.adt.internal.wizards.newproject.NewProjectCreator.createEclipseProject(NewProjectCreator.java:727)
at com.android.ide.eclipse.adt.internal.wizards.newproject.NewProjectCreator.createProjectAsync(NewProjectCreator.java:660)
... 6 more
Root exception:
org.eclipse.core.internal.resources.ResourceException: Invalid project description.
at org.eclipse.core.internal.resources.Project.checkDescription(Project.java:175)
at org.eclipse.core.internal.resources.Project.assertCreateRequirements(Project.java:53)
at org.eclipse.core.internal.resources.Project.create(Project.java:287)
at org.eclipse.core.internal.resources.Project.create(Project.java:269)
at com.android.ide.eclipse.adt.internal.wizards.newproject.NewProjectCreator.createEclipseProject(NewProjectCreator.java:727)
at com.android.ide.eclipse.adt.internal.wizards.newproject.NewProjectCreator.createProjectAsync(NewProjectCreator.java:660)
at com.android.ide.eclipse.adt.internal.wizards.newproject.NewProjectCreator.access$0(NewProjectCreator.java:590)
at com.android.ide.eclipse.adt.internal.wizards.newproject.NewProjectCreator$3.execute(NewProjectCreator.java:400)
at org.eclipse.ui.actions.WorkspaceModifyOperation$1.run(WorkspaceModifyOperation.java:106)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:2344)
at org.eclipse.ui.actions.WorkspaceModifyOperation.run(WorkspaceModifyOperation.java:118)
at org.eclipse.jface.operation.ModalContext$ModalContextThread.run(ModalContext.java:121)
Contains: OK
Contains: C:\Users\ramapriya\workspace\InteractiveChart overlaps the location of another project: 'InteractiveChart'
I restarted eclipse.my computer,cleared all projects.Got no clue how to solve this.
Thanks
EDIT: I need to mention that some projects run successfully with no errors(before) now show errors.The projects work just fine/

So I tried changing the themes,the java files.Nothing worked.All I had to do was:
Go to project properties(Right Click your project)
Go to Android Target,Click most Recent.
Ok, Apply,there you go! :D

Eclipse crash after opening .xml file

i am starting with android development
i have created some sample application but
when i am opening .xml file resides in res/layout/main.xml
after that my eclipse crash and close.
i even try "open with android layout editor" which also crashes eclipse.
i am not getting why this problem occur.
my os is ubantu 9.04
and using eclipse Galileo
EDIT:
i am getting following error in my eclipse log file. what dose this means???
!ENTRY com.android.ide.eclipse.adt 4 0 2011-04-29 16:56:16.476
!MESSAGE loadAndParseRClass failed to find class com.saltriver.gui.R
!STACK 0
java.lang.UnsupportedClassVersionError: Bad version number in .class file
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClass(ClassLoader.java:620)
at java.lang.ClassLoader.defineClass(ClassLoader.java:465)
at com.android.ide.eclipse.adt.internal.resources.manager.ProjectClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at com.android.ide.eclipse.adt.internal.resources.manager.CompiledResourcesMonitor.loadAndParseRClass(Unknown Source)
at com.android.ide.eclipse.adt.internal.resources.manager.CompiledResourcesMonitor.fileChanged(Unknown Source)
at com.android.ide.eclipse.adt.internal.resources.manager.GlobalProjectMonitor$DeltaVisitor.visit(Unknown Source)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:68)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:79)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:79)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:79)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:79)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:79)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:79)
at org.eclipse.core.internal.events.ResourceDelta.accept(ResourceDelta.java:48)
at com.android.ide.eclipse.adt.internal.resources.manager.GlobalProjectMonitor$1.resourceChanged(Unknown Source)
at org.eclipse.core.internal.events.NotificationManager$2.run(NotificationManager.java:291)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:42)
at org.eclipse.core.internal.events.NotificationManager.notify(NotificationManager.java:285)
at org.eclipse.core.internal.events.NotificationManager.broadcastChanges(NotificationManager.java:149)
at org.eclipse.core.internal.resources.Workspace.broadcastPostChange(Workspace.java:313)
at org.eclipse.core.internal.resources.Workspace.endOperation(Workspace.java:1022)
at org.eclipse.core.internal.resources.Workspace.run(Workspace.java:1809)
at org.eclipse.core.internal.events.NotificationManager$NotifyJob.run(NotificationManager.java:40)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

"crash" is not very specific. Look into the file .metadata/.log in your workspace to see if Eclipse wrote an error message before it died.
If that doesn't help, start Eclipse from a console with -debug -console -consoleLog.
[EDIT] The error means that you're using Java X to run Eclipse but a plugin needs Java Y (where Y > X).
the usual case is that you run Eclipse with Java 5 and you have a plugin which needs Java 6. Unfortunately, the error message is useless: It doesn't tell you which class is the problem, from which JAR it came, which version it has and which versions are supported - The code has all the information but some smart guy decided that you don't need that. Pity.
So try to get the latest version of Java to run the IDE.
This is independent of the Java version which you use to build and run your projects!! It's just the VM which Eclipse uses to load its plugins. For VMs used in projects, see the Eclipse preferences.

Close 'Eclipse'
Go to your Eclipse folder open eclipse.ini file in any text editor.
after the line which says openFile add following two lines.
-vm
C:\Program Files\Java\jdk1.6.0_24\bin\javaw.exe
(This folder path may vary according to your java installation directory).
save and close.
Open eclipse and tadaaaa!!! you can open xml files again. :)