Develop Reference

why do i get the error "Gradle sync failed: Cause: startup failed: invalid token"?

Here's the link to build.gradle . I'm not able to find the error.

I fix your code and build it a success. You can see the PR in Github.
I think it just a little environment setting problem.
https://github.com/kabburesai/Demo/pulls
Update:
I build it again and find the styles.xml has incorrect, so I fix it also.
enter image description here

Unexpected token mostly means syntax error only. There's just a command(code, character or words) that was incorrectly placed.
According to your error, it points to your build.gradle (root).

Unable to find type [UnityEngine.dll]UnityEngine.ResourceRequest

I am getting this error, when I am running my game on device(Platform:Android) its in Debug log, there is no compiler error. I am not sure what is the reason of it and I couldn't find any fruitful answer over the internet. Any help would be appreciated.

Can not open eclipse after SDK updates

Can someone read what is a problem why i can not open eclipse? I updated android sdk tools and I installed new API. I restarted my computer and eclipse stiil do not work. This is Log from .metadata. Could someone read what is the problem?
java.lang.NullPointerException
at org.eclipse.ui.internal.statushandlers.StatusHandlerRegistry.<init>(StatusHandlerRegistry.java:72)
at org.eclipse.ui.internal.statushandlers.StatusHandlerRegistry.getDefault(StatusHandlerRegistry.java:91)
at org.eclipse.ui.statushandlers.StatusManager.getStatusHandler(StatusManager.java:135)
at org.eclipse.ui.statushandlers.StatusManager.handle(StatusManager.java:189)
at org.eclipse.ui.statushandlers.StatusManager.handle(StatusManager.java:231)
at org.eclipse.ui.statushandlers.StatusManager$StatusManagerLogListener.logging(StatusManager.java:305)
at org.eclipse.core.internal.runtime.RuntimeLog.logToListeners(RuntimeLog.java:160)
at org.eclipse.core.internal.runtime.PlatformLogWriter.logged(PlatformLogWriter.java:100)
at org.eclipse.equinox.log.internal.ExtendedLogReaderServiceFactory.safeLogged(ExtendedLogReaderServiceFactory.java:86)
at org.eclipse.equinox.log.internal.ExtendedLogReaderServiceFactory.logPrivileged(ExtendedLogReaderServiceFactory.java:205)
at org.eclipse.equinox.log.internal.ExtendedLogReaderServiceFactory.log(ExtendedLogReaderServiceFactory.java:178)
at org.eclipse.equinox.log.internal.ExtendedLogServiceFactory.log(ExtendedLogServiceFactory.java:65)
at org.eclipse.equinox.log.internal.ExtendedLogServiceImpl.log(ExtendedLogServiceImpl.java:87)
at org.eclipse.equinox.log.internal.LoggerImpl.log(LoggerImpl.java:54)
at org.eclipse.core.internal.runtime.Log.log(Log.java:62)
at org.eclipse.ui.internal.WorkbenchPlugin.log(WorkbenchPlugin.java:813)
at org.eclipse.ui.internal.EarlyStartupRunnable.handleException(EarlyStartupRunnable.java:81)
at org.eclipse.core.runtime.SafeRunner.handleException(SafeRunner.java:75)
at org.eclipse.core.runtime.SafeRunner.run(SafeRunner.java:44)
at org.eclipse.ui.internal.Workbench$54.run(Workbench.java:2412)
at org.eclipse.core.internal.jobs.Worker.run(Worker.java:53)

Check out this answer. About halfway through his .log he has the same message you are receiving. Following the first answer may work for you.

PhoneGap 2.0 Upgrade Errors - JSCallback Error / Could not find class

I updated my Phonegap (Cordova) project from 1.9 to 2.0 and am receiving the following two new errors:
Web Console
JSCallback Error: Request failed. at file file://android_assets/www/js/cordova-2.0.0.js:3698
and
dalvikvm
Could not find class 'android.webkit.WebResourceResponse', referenced from method org.apache.cordova.CordovaWebViewClient.generatedWebResourceResponse
Is this a known problem? I have searched but can't find a solution that addresses these issues. I have tried creating a new blank project and I am getting the same errors. I have also ensured Eclipse and the SDK manager are up to date.
Any help would be much appreciated.
Thank you.

Not sure about the first question as I need to know what you are doing when that log appears.
Regarding the second question:
https://stackoverflow.com/a/12043959/41679

Error while running the project in android(eclipse)

sir i have got an error while running my project in ecclipse. The error is:
([2010-12-23 10:42:26 - Emulator] emulator: ERROR: the user data image is used by another emulator. aborting)
kindly you please help me to solve this error.
thanks.

I have not found a way of avoiding getting this issue, but you can do this to solve quickly:
Remove:
C:/Users/%user_name%/.android/avd/%name_of_avd%/cache.img.lock
C:/Users/%user_name%/.android/avd/%name_of_avd%/userdata-qemu.img.lock
You won't need to restart the emulator.