Emulator deleted my all application on restarting....why?

I am newbie to android development.yesterday I created an application and installed that appliaction into emulator. It was working fine.开发者_Go百科 I ran it many times.

But today when I launched emulator, It doesn't have any application installed by me. I dont know where is my application gone.I cant figure out what happened.

Please help me..can anybody know what is problem??

Thanks and Regards Vaibhav Tyagi

One possibility is that when you launch the emulator via the AVD Manager, there is a checkbox which allows you to 'wipe user data' on the emulator. That should be unset.