activity_add.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity" >

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="vertical" >

        <EditText
            android:id="@+id/editText1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:ems="10" >

            <requestFocus />
        </EditText>

        <EditText
            android:id="@+id/editText2"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:ems="10" />

        <EditText
            android:id="@+id/editText3"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:ems="10" />

        <EditText
            android:id="@+id/editText4"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:ems="10" />

        <Button
            android:id="@+id/button1"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:text="追加" />
    </LinearLayout>

</LinearLayout>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    android:id="@+id/main_frame" >

    <Spinner
        android:id="@+id/spinner1"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />

    <TextView
        android:id="@+id/textView1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Medium Text"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <TextView
        android:id="@+id/textView2"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Medium Text"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <TextView
        android:id="@+id/textView3"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Medium Text"
        android:textAppearance="?android:attr/textAppearanceMedium" />

    <TextView
        android:id="@+id/textView4"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Medium Text"
        android:textAppearance="?android:attr/textAppearanceMedium" />

</LinearLayout>

AddActivity.java

package ws.temp.dustcode;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;

public class AddActivity extends Activity {
    private EditText[] editText = new EditText[4];
    private Button button;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_add);
        editText[0] = (EditText) findViewById(R.id.editText1);
        editText[1] = (EditText) findViewById(R.id.editText2);
        editText[2] = (EditText) findViewById(R.id.editText3);
        editText[3] = (EditText) findViewById(R.id.editText4);
        button = (Button) findViewById(R.id.button1);

        button.setOnClickListener(new OnClickListener() {
            @Override
            public void onClick(View v) {
                String[] text = new String[4];
                for (int i = 0; i < text.length; i++)
                    text[i] = editText[i].getText().toString();
                Intent intent = new Intent();
                Bundle bundle = new Bundle();
                bundle.putStringArray("text", text);
                intent.putExtras(bundle);
                setResult(RESULT_OK, intent);
                finish();
            }
        });

    }

}

MainActivity.java

package ws.temp.dustcode;

import java.util.ArrayList;

import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemSelectedListener;
import android.widget.ArrayAdapter;
import android.widget.Spinner;
import android.widget.TextView;

public class MainActivity extends Activity {
    private final static String TAG = MainActivity.class.getSimpleName();
    private ArrayAdapter<String> adapter;
    private Spinner spinner;
    private ArrayList<String[]> list = new ArrayList<String[]>();
    private int mainFrame;
    private TextView[] textView = new TextView[4];

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        mainFrame = R.id.main_frame;

        textView[0] = (TextView) findViewById(R.id.textView1);
        textView[1] = (TextView) findViewById(R.id.textView2);
        textView[2] = (TextView) findViewById(R.id.textView3);
        textView[3] = (TextView) findViewById(R.id.textView4);

        adapter = new ArrayAdapter<String>(this,
                android.R.layout.simple_spinner_item);
        spinner = (Spinner) findViewById(R.id.spinner1);
        spinner.setAdapter(adapter);
        spinner.setOnItemSelectedListener(new OnItemSelectedListener() {
            @Override
            public void onItemSelected(AdapterView<?> arg0, View arg1,
                    int position, long id) {
                set(position);
            }

            @Override
            public void onNothingSelected(AdapterView<?> arg0) {
            }
        });
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        menu.add("add").setIcon(android.R.drawable.ic_input_add)
                .setShowAsAction(MenuItem.SHOW_AS_ACTION_ALWAYS);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        startActivityForResult(new Intent(this, AddActivity.class), 0);
        return super.onOptionsItemSelected(item);
    }

    @Override
    protected void onActivityResult(int requestCode, int resultCode, Intent data) {
        super.onActivityResult(requestCode, resultCode, data);
        String text[] = data.getExtras().getStringArray("text");
        list.add(text);
        StringBuilder sb = new StringBuilder();
        for (int i = 0; i < text.length; i++)
            sb.append(text[i]);
        adapter.add(sb.toString());
        Log.d(TAG, sb.toString());
    }

    private void set(int position) {
        String[] text = list.get(position);
        for (int i = 0; i < text.length; i++) {
            textView[i].setText(text[i]);
        }
    }
}