Откройте Google Map одним нажатием кнопки в Android!

На экране есть 3 кнопки! Начало, Просмотр карты, Стоп

Когда я нажимаю "Просмотр карты", он должен перейти на новый экран, отображающий карту! Но что-то пошло не так, и приложение закрывает силу! Я считаю, что проблема связана с файлами xml. Пожалуйста, исправьте кого-нибудь.

main.xml

    <?xml version="1.0" encoding="utf-8"?>

    <RelativeLayout 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <TextView 
android:layout_width="wrap_content" 
android:id="@+id/widget35" 
android:padding="10dp" 
android:textSize="35sp" 
android:text="Maps" 
android:layout_height="wrap_content" />

    <Button 
android:textSize="30sp" 
android:layout_width="wrap_content" 
android:id="@+id/buttonStart" 
android:text="Start" 
android:layout_height="match_parent" />

    <Button 
android:textSize="30sp" 
android:layout_width="wrap_content" 
android:id="@+id/buttonMap" 
android:text="View Map" 
android:layout_height="wrap_content" />

    <Button 
android:textSize="30sp" 
android:layout_width="wrap_content" 
android:id="@+id/buttonStop" 
android:text="Stop" 
android:layout_height="match_parent" />

    <com.google.android.maps.MapView 
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent"
    android:clickable="true"
    android:enabled="true"
    android:id="@+id/mymap"
    android:apiKey="xxxxxxxxxxx" />

    <LinearLayout
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:id="@+id/myzoom"
    android:layout_alignParentBottom="true"
    android:layout_centerHorizontal="true"
    />
    </RelativeLayout>

manifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="Firstdroid.Gps"
android:versionCode="1"
android:versionName="1.0">
<application android:icon="@drawable/icon" android:label="@string/app_name">
<activity 
android:name=".MainActivity"
android:label="@string/app_name">
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<service 
android:permission="android.permission.INTERNET" 
android:name=".IntentService" 
android:enabled="true"
/>
<service android:name="GPSTestApp" />
<activity android:name=".MapViewer">
</activity>
</application>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<uses-permission android:name="android.permission.INTERNET" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
</manifest>

MainActivity.java

package Firstdroid.Gps;
import com.google.android.maps.MapView;
import com.google.android.maps.MyLocationOverlay;
import Firstdroid.Gps.R;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.LinearLayout;
public class MainActivity extends Activity {
    MapView myMap;
    private MyLocationOverlay myLocOverlay;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        /* MAP BUTTON */

        Button mapButton = (Button) findViewById(R.id.buttonMap);
        mapButton.setOnClickListener(new OnClickListener() {
                @Override
                public void onClick(View m){
                    Log.d("Firstdroid.Gps", "Loading Map..");
                    // Loading Google Map View
                    startService(new Intent(MainActivity.this, MapViewer.class));
                }       
        });

    }
}/* End of MainActivity */

В дополнение к блоку кнопок "Карта" у этого также есть блоки для запуска и остановки, но они работают правильно.

MapViewer.java

package Firstdroid.Gps;
//import android.R;
import Firstdroid.Gps.R;
import android.app.Service;
import android.os.Bundle;
import android.view.View;
import android.widget.LinearLayout;
import com.google.android.maps.MapActivity;
import com.google.android.maps.MapView;
import com.google.android.maps.MyLocationOverlay;
public class MapViewer extends MainActivity {

    MapView myMap;
    private MyLocationOverlay myLocOverlay;

    /** Called when the activity is first created. */
    @Override
    public void onCreate(Bundle savedInstanceState) 
    {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);

        initMap();
        initMyLocation();
    }

    private void initMap() {
        myMap = (MapView) findViewById(R.id.mymap);

        View zoomView = myMap.getZoomControls();
        LinearLayout myzoom = (LinearLayout) findViewById(R.id.myzoom);
        myzoom.addView(zoomView);
        myMap.displayZoomControls(true);

    }

    /**
     * Initialises the MyLocationOverlay and adds it to the overlays of the map
     */
    private void initMyLocation() {
        myLocOverlay = new MyLocationOverlay(this, myMap);
        myLocOverlay.enableMyLocation();
        myMap.getOverlays().add(myLocOverlay);

    }

    //@Override
    protected boolean isRouteDisplayed() {
        return false;
    }
}

Logcat

06-29 04:34:37.701: WARN/dalvikvm(381): threadid=1: thread exiting with uncaught exception (group=0x4001d800)
06-29 04:34:37.731: ERROR/AndroidRuntime(381): FATAL EXCEPTION: main
06-29 04:34:37.731: ERROR/AndroidRuntime(381): java.lang.RuntimeException: Unable to start activity ComponentInfo{Firstdroid.Gps/Firstdroid.Gps.MainActivity}: android.view.InflateException: Binary XML file line #21: Error inflating class com.google.android.maps.MapView
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.app.ActivityThread.access$2300(ActivityThread.java:125)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.os.Handler.dispatchMessage(Handler.java:99)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.os.Looper.loop(Looper.java:123)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.app.ActivityThread.main(ActivityThread.java:4627)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at java.lang.reflect.Method.invokeNative(Native Method)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at java.lang.reflect.Method.invoke(Method.java:521)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at dalvik.system.NativeStart.main(Native Method)
06-29 04:34:37.731: ERROR/AndroidRuntime(381): Caused by: android.view.InflateException: Binary XML file line #21: Error inflating class com.google.android.maps.MapView
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:576)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:618)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.view.LayoutInflater.inflate(LayoutInflater.java:407)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.view.LayoutInflater.inflate(LayoutInflater.java:320)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.view.LayoutInflater.inflate(LayoutInflater.java:276)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:198)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.app.Activity.setContentView(Activity.java:1647)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at Firstdroid.Gps.MainActivity.onCreate(MainActivity.java:23)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     ... 11 more
06-29 04:34:37.731: ERROR/AndroidRuntime(381): Caused by: java.lang.ClassNotFoundException: com.google.android.maps.MapView in loader dalvik.system.PathClassLoader[/data/app/Firstdroid.Gps-2.apk]
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at dalvik.system.PathClassLoader.findClass(PathClassLoader.java:243)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at java.lang.ClassLoader.loadClass(ClassLoader.java:573)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at java.lang.ClassLoader.loadClass(ClassLoader.java:532)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.view.LayoutInflater.createView(LayoutInflater.java:466)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:565)
06-29 04:34:37.731: ERROR/AndroidRuntime(381):     ... 20 more
06-29 04:34:37.751: WARN/ActivityManager(58):   Force finishing activity Firstdroid.Gps/.MainActivity
06-29 04:34:38.292: WARN/ActivityManager(58): Activity pause timeout for HistoryRecord{44fb8580 Firstdroid.Gps/.MainActivity}
06-29 04:34:48.824: WARN/ActivityManager(58): Activity destroy timeout for HistoryRecord{44fb8580 Firstdroid.Gps/.MainActivity}