HomeActivity.java

package com.application.brainfit;

import android.content.DialogInterface;
import android.content.Intent;
import android.content.pm.PackageManager;
import android.net.Uri;
import android.support.v4.app.ActivityCompat;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.EditText;
import android.widget.ImageButton;
import android.widget.ImageView;
import android.widget.TextView;

public class HomeActivity extends AppCompatActivity {
    ImageButton ib1, ib2, ib3;
    TextView logout;
    ImageButton call;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_home);

        ib1 = (ImageButton) findViewById(R.id.ib1);
        logout = (TextView) findViewById(R.id.logout);
        ib2 = (ImageButton) findViewById(R.id.ib2);
        ib3 = (ImageButton) findViewById(R.id.ib3);
        call = (ImageButton) findViewById(R.id.call);
        final TextView etage = (TextView) findViewById(R.id.age);
        final EditText tv1 = (EditText) findViewById(R.id.tv1);

        Intent i = getIntent();
        String name = i.getStringExtra("name");
        String age = i.getStringExtra("age");

        //String msg = " Welcome to user area, "+name;
        tv1.setText(name);
        etage.setText(age);

        logout.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(HomeActivity.this);
                alertDialogBuilder
                        .setMessage("EXIT");
                alertDialogBuilder
                        .setCancelable(false);
                alertDialogBuilder
                        .setPositiveButton("Logout", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                Intent intent = new Intent(getApplicationContext(), MainActivity.class);
                                startActivity(intent);
                                finish();
                            }
                        });
                alertDialogBuilder
                        .setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
                            @Override
                            public void onClick(DialogInterface dialog, int which) {
                                Intent intent = new Intent(getApplicationContext(),HomeActivity.class);
                                startActivity(intent);
                                finish();
                            }
                        });
                AlertDialog alertDialog = alertDialogBuilder.create();
                alertDialog.show();
            }
        });
        ib1.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent i = new Intent(getApplicationContext(), FaceDetection.class);
                startActivity(i);
            }
        });
        ib2.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent i = new Intent(getApplicationContext(), Exercise.class);
                startActivity(i);
            }
        });

        call.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                String n = tv1.getText().toString();
                Intent c = new Intent(Intent.ACTION_DIAL);
                c.setData(Uri.parse("tel: " + n));
                startActivity(c);
            }
        });

        ib3.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                Intent i = new Intent(getApplicationContext(), AlarmMe.class);
                startActivity(i);
            }
        });
    }
}