Can't debug android application

I'm developing android application in android platform 2.2,. I am not able to debug applications. I'm facing a problem wherein there are no errors in the program, but whenever I run the applicatio开发者_如何学运维n on emulator, it gets launched but stops unexpectedly and I'm forced to close the application.

hey Supriya!!!!!!!!!!!!!
this means your application is crashing somewhere. see log for crash or exception details.

and for debug add following attribute in android manifest file under application tag android:debuggable="true"

Thanks.