Android Studioで簡単な占いアプリを作っているのですが、MainActivityとSecondActivityがうまく連携させることができません

初めてJAVAを使っているのでぐちゃぐちゃになっているとは思うのですがご容赦ください...
はじめのMainActivityで、恋愛運か仕事運か金運のどれかをbuttonでクリックするのですが、どれかを押したら次のSecondActivityに飛び、結果を出すということをしたいのですが、どう直したら良いですか...？
あ、importは関係ないのもありますがスルーで良いです。

java
1//MainActivity
2
3package com.example.crazycat0810.app1;
4
5import android.app.Activity;
6import android.content.Intent;
7import android.content.res.TypedArray;
8import android.support.v7.app.AppCompatActivity;
9import android.support.v7.widget.Toolbar;
10import android.view.Menu;
11import android.view.MenuItem;
12import android.os.Bundle;
13import java.util.Random;
14import android.widget.Button;
15import android.widget.TextView;
16import android.view.View;
17import android.view.View.OnClickListener;
18
19import jp.androidbook.myapp.SecondActivity;
20
21
22public class MainActivity extends AppCompatActivity {
23    Button button1, button2, button3;
24
25    @Override
26    protected void onCreate(Bundle savedInstanceState) {
27        super.onCreate(savedInstanceState);
28        setContentView(R.layout.activity_main);
29        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
30        setSupportActionBar(toolbar);
31
32        final MainActivity activity = this;
33        button1 = (Button)findViewById(R.id.button);
34        button1.setOnClickListener(new View.OnClickListener() {
35            @Override
36            public void onClick(View view) {
37                Intent intent = new Intent(activity, SecondActivity.class);
38                activity.startActivity(intent);
39            }
40        });
41
42        button2 = (Button)findViewById(R.id.button2);
43        button2.setOnClickListener(new View.OnClickListener() {
44            @Override
45            public void onClick(View view) {
46                Intent intent = new Intent(activity, SecondActivity.class);
47                activity.startActivity(intent);
48            }
49        });
50
51        button3 = (Button)findViewById(R.id.button3);
52        button3.setOnClickListener(new View.OnClickListener() {
53            @Override
54            public void onClick(View view) {
55                Intent intent = new Intent(activity, SecondActivity.class);
56                activity.startActivity(intent);
57            }
58        });
59    }
60    @Override
61    public boolean onCreateOptionsMenu(Menu menu) {
62        return true;
63    }
64}

java
1//SecondActivity
2
3package jp.androidbook.myapp;
4
5import android.content.res.TypedArray;
6import android.os.Bundle;
7import android.support.design.widget.FloatingActionButton;
8import android.support.design.widget.Snackbar;
9import android.support.v7.app.AppCompatActivity;
10import android.support.v7.widget.Toolbar;
11import android.view.View;
12import java.util.Random;
13import android.content.Intent;
14import android.widget.Button;
15import android.widget.TextView;
16import com.example.crazycat0810.app1.R;
17
18
19
20public class SecondActivity extends AppCompatActivity implements View.OnClickListener {
21    Button button1, button2, button3;
22    TextView tv1;
23
24    @Override
25    protected void onCreate(Bundle savedInstanceState) {
26        super.onCreate(savedInstanceState);
27        setContentView(R.layout.activity_second);
28        Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
29        setSupportActionBar(toolbar);
30
31        Intent intent = getIntent();
32        String msg = intent.getStringExtra("msg");
33        String title = intent.getStringExtra("title");
34        tv1 = (TextView) this.findViewById(R.id.tv1);
35        tv1.setText(title);
36    }
37
38    public void onClick(View v) {
39        if (v == button1) {
40            TypedArray typedArray = getResources().obtainTypedArray(R.array.renai);
41            int i = (int) (Math.floor(Math.random() * (6)));
42            String str = typedArray.getString(i);
43            tv1.setText(str);
44        }
45        if (v == button2) {
46            TypedArray typedArray = getResources().obtainTypedArray(R.array.sigoto);
47            int i = (int) (Math.floor(Math.random() * (6)));
48            String str = typedArray.getString(i);
49            tv1.setText(str);
50        }
51        if (v == button3) {
52            TypedArray typedArray = getResources().obtainTypedArray(R.array.kin);
53            int i = (int) (Math.floor(Math.random() * (6)));
54            String str = typedArray.getString(i);
55            tv1.setText(str);
56        }
57
58
59        FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
60        fab.setOnClickListener(new View.OnClickListener() {
61            @Override
62            public void onClick(View view) {
63                Snackbar.make(view, "Replace with your own action", Snackbar.LENGTH_LONG)
64                        .setAction("Action", null).show();
65            }
66        });
67    }
68}
69