Failed Login Validation Android

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http://stackoverflow.com – I have a big problem when trying to login on my android screen. I have two fields that requires user to enter email and password, it should then go and check sqlite db if correct they will be navigated to mainscreen(login success) if incorrect they will be notified via toast message. My problem is when i hit login button my app displays "Unfortunately stopped working" I cant see any errors in my code! Please someone help!!My code is posted below *LoginActivity package com.example.finalproject; import android.app.Activity; import android.content.Context; import android.content.Intent; import (HowTos)