Android studioでゲームを作っています

android studioでゲームを作っているんですが、AndroidMainfest.xmlでエラーが発生し困っています。エラーがある部分に※をしておきます。
エラー箇所が多々ありますが、何卒よろしくお願いします。

###発生している問題・エラーメッセージ

エラーメッセージ
Error:(27, 28) No resource found that matches the given name (at 'label' with value '@string/title_activity_').

Error:(36, 28) No resource found that matches the given name (at 'label' with value '@string/title_activity_activity_setumei').

Error:Execution failed for task ':app:processDebugResources'.
> com.android.ide.common.process.ProcessException: org.gradle.process.internal.ExecException: Process 'command 'C:\Users\taiken02\AppData\Local\Android\Sdk\build-tools\24.0.2\aapt.exe'' finished with non-zero exit value 1


###該当のソースコード
<?xml version="1.0" encoding="utf-8"?>
※<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.taiken02.hontaishisaku"
    ※android:versionCode="1"
    ※android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="21"
        android:targetSdkVersion="24" />

    <application
        ※android:allowBackup="true"
        ※android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        ※android:supportsRtl="true"
        ※android:theme="@style/AppTheme" >
        <activity android:name="com.example.taiken02.hontaishisaku.ActivityTaitoru" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.example.taiken02.hontaishisaku.ActivitySetumei"
            android:label="@string/title_activity_" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity
            android:name="com.example.taiken02.hontaishisaku.ActivitySetumei"
            android:label="@string/title_activity_activity_setumei" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <activity android:name="com.example.taiken02.hontaishisaku.MainActivity" />
    </application>

</manifest>

```ここに言語を入力
Java
ここにご自身が実行したソースコードを書いてください
import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.content.Intent;

public class ActivitySetumei extends Activity {

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


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.setumei, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    public void onClick(View view){
        switch (view.getId()){
            case R.id.ToThree:
                Intent intent = new Intent(this, MainActivity.class);
                startActivity(intent);
                break;
        }
    }
}


import android.app.Activity;
import android.os.Bundle;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.content.Intent;

public class ActivityTaitoru extends Activity {

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


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // Inflate the menu; this adds items to the action bar if it is present.
        getMenuInflater().inflate(R.menu.taitoru, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        // Handle action bar item clicks here. The action bar will
        // automatically handle clicks on the Home/Up button, so long
        // as you specify a parent activity in AndroidManifest.xml.
        int id = item.getItemId();
        if (id == R.id.action_settings) {
            return true;
        }
        return super.onOptionsItemSelected(item);
    }

    public void onClick(View view){
        switch (view.getId()){
            case R.id.ToSecond:
                Intent intent = new Intent(this, ActivitySetumei.class);
                startActivity(intent);
                break;


        }
    }
}

import android.content.Context;
import android.hardware.Sensor;
import android.hardware.SensorEvent;
import android.hardware.SensorEventListener;
import android.hardware.SensorManager;
import android.os.Bundle;
import android.view.WindowManager;
import android.support.v7.app.AppCompatActivity;


public class MainActivity extends AppCompatActivity implements SensorEventListener {

    private Avo mSurfaceView;
    private SensorManager mSensorManager;
    private Sensor mMagField;
    private Sensor mAccelerometer;

    private static final int MATRIX_SIZE = 16;
    private float[] mgValues = new float[3];
    private float[] acValues = new float[3];

    public static int pitch = 0;
    public static int role = 0;

    @Override
    protected void onCreate(Bundle saveInstanceState) {
        super.onCreate(saveInstanceState);
        getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);
        mSurfaceView = new Avo(this);
        setContentView(mSurfaceView);

        mSensorManager = (SensorManager)getSystemService(Context.SENSOR_SERVICE);
        mAccelerometer = mSensorManager.getDefaultSensor(Sensor.TYPE_ACCELEROMETER);
        mMagField = mSensorManager.getDefaultSensor(Sensor.TYPE_MAGNETIC_FIELD);
    }
    @Override
    protected void onResume(){
        super.onResume();
        mSensorManager.registerListener(this, mAccelerometer, SensorManager.SENSOR_DELAY_GAME);
        mSensorManager.registerListener(this,mMagField,SensorManager.SENSOR_DELAY_GAME);
    }
    @Override
    protected void onPause(){
        super.onPause();
        mSensorManager.unregisterListener(this, mAccelerometer);
        mSensorManager.unregisterListener(this, mMagField);
    }

    @Override
    public void onAccuracyChanged(Sensor sensor,int accuracy){

    }
    @Override
    public void onSensorChanged(SensorEvent event){
        float[] inR = new float[MATRIX_SIZE];
        float[] outR = new float[MATRIX_SIZE];
        float[] I = new float[MATRIX_SIZE];
        float[] orValues = new float[3];

        switch (event.sensor.getType()){
            case Sensor.TYPE_ACCELEROMETER:
                acValues = event.values.clone();
                break;
            case Sensor.TYPE_MAGNETIC_FIELD:
                mgValues = event.values.clone();
                break;
        }

        if(mgValues != null && acValues != null) {

            SensorManager.getRotationMatrix(inR,I,acValues,mgValues);

            SensorManager.remapCoordinateSystem(inR, SensorManager.AXIS_X, SensorManager.AXIS_Y, outR);
            SensorManager.getOrientation(outR,orValues);

            pitch = rad2Deg(orValues[1]);   //[1]pitch
            role = rad2Deg(orValues[2]);    //[2]role
        }
    }
    private int rad2Deg(float rad){
        return (int) Math.floor(Math.toDegrees(rad));
    }
}




###試したこと
わからなかったのでプロジェクトクリーンしか試していません。

###補足情報(言語/FW/ツール等のバージョンなど)
より詳細な情報