(Solved) : Android App Keep Crashing Currently Make Caesar Cipher Application Encrypt Words Entered S Q29564729 . . . .

Why does my android app keep crashing? I currently have to makea Caesar Cipher application to encrypt the words entered byshifting the letters by a user-given number. For example the word,’encrypted’, shifted 3 times gives me: ‘hqfubsw’ Every time I enterthis into the app and click the submit button my applicationcrashes, I’m not sure why. If it works for you, please screen shotand send, if not please find the reason why.

Below are screenshots how it should work and my files in textformat (I am using android studio):

MainActivity:

package com.example.brandon.caesarcipher;import android.support.v7.app.AppCompatActivity;import android.os.Bundle;import android.content.Intent;import android.view.View;import android.widget.Button;import android.widget.EditText;public class MainActivity extends AppCompatActivity {private Button