title: Android - Error Inflating Class Fragment - XML File
body: <p>I'm getting an error with my SupportFragment code.  It's having issues inflating the XML.  It crashes when the activity starts.  Here is the Java code I'm using:</p>
  
  <pre><code>@Override
  protected void onCreate(Bundle load)
  {
    super.onCreate(load);
  
    setContentView(R.layout.map);
    mMapView = ((SupportMapFragment) getSupportFragmentManager().findFragmentById(R.id.myMapView)).getMap();
  
    mMapscreen = findViewById(R.id.mapScreen);
    mMapscreen.setDrawingCacheEnabled(true);
    mUnits = new UnitsI18n(this);
    mLoggerServiceManager = new GPSLoggerServiceManager(this);
  
    final Semaphore calulatorSemaphore = new Semaphore(0);
    Thread calulator = new Thread("OverlayCalculator")
       {
          @Override
          public void run()
          {
             Looper.prepare();
             mHandler = new Handler();
             calulatorSemaphore.release();
             Looper.loop();
          }
       };
    calulator.start();
    try
    {
       calulatorSemaphore.acquire();
    }
    catch (InterruptedException e)
    {
       Log.e(TAG, "Failed waiting for a semaphore", e);
    }
    mSharedPreferences = PreferenceManager.getDefaultSharedPreferences(this);
  
    TextView[] speeds = { (TextView) findViewById(R.id.speedview05), (TextView) findViewById(R.id.speedview04), (TextView) findViewById(R.id.speedview03), (TextView) findViewById(R.id.speedview02),
          (TextView) findViewById(R.id.speedview01), (TextView) findViewById(R.id.speedview00) };
    mSpeedtexts = speeds;
    mLastGPSSpeedView = (TextView) findViewById(R.id.currentSpeed);
    mLastGPSAltitudeView = (TextView) findViewById(R.id.currentAltitude);
    mDistanceView = (TextView) findViewById(R.id.currentDistance);
  
    createListeners();
    onRestoreInstanceState(load);
  }
  </code></pre>
  
  <p>Here is the XML Code: </p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt;
  &lt;RelativeLayout
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:layout_width="fill_parent"
      android:layout_height="fill_parent"
      android:id="@+id/mapScreen"&gt;
   &lt;fragment
      android:id="@+id/myMapView"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      class="com.google.android.gms.maps.SupportMapFragment"/&gt;
  </code></pre>
  
  <p>Here is the logcat output: </p>
  
  <pre><code>05-22 10:35:35.081: E/AndroidRuntime(3483): FATAL EXCEPTION: main
  05-22 10:35:35.081: E/AndroidRuntime(3483): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.android.gpstracker/com.android.epicriders.Rides.RideTracking3}: android.view.InflateException: Binary XML file line #12: Error inflating class fragment
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.app.ActivityThread.access$600(ActivityThread.java:141)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.os.Handler.dispatchMessage(Handler.java:99)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.os.Looper.loop(Looper.java:137)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.app.ActivityThread.main(ActivityThread.java:5041)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at java.lang.reflect.Method.invokeNative(Native Method)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at java.lang.reflect.Method.invoke(Method.java:511)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at dalvik.system.NativeStart.main(Native Method)
  05-22 10:35:35.081: E/AndroidRuntime(3483): Caused by: android.view.InflateException: Binary XML file line #12: Error inflating class fragment
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:704)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.view.LayoutInflater.inflate(LayoutInflater.java:352)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:270)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.app.Activity.setContentView(Activity.java:1881)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at com.polaris.epicriders.Rides.RideTracking3.onCreate(RideTracking3.java:152)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.app.Activity.performCreate(Activity.java:5104)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     ... 11 more
  05-22 10:35:35.081: E/AndroidRuntime(3483): Caused by: android.support.v4.app.Fragment$InstantiationException: Unable to instantiate fragment com.google.android.gms.maps.MapFragment: make sure class name exists, is public, and has an empty constructor that is public
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.support.v4.app.Fragment.instantiate(Fragment.java:401)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.support.v4.app.Fragment.instantiate(Fragment.java:369)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.support.v4.app.FragmentActivity.onCreateView(FragmentActivity.java:272)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:676)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     ... 21 more
  05-22 10:35:35.081: E/AndroidRuntime(3483): Caused by: java.lang.ClassNotFoundException: Didn't find class "com.google.android.gms.maps.MapFragment" on path: /data/app/com.android.gpstracker-1.apk
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:65)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     at android.support.v4.app.Fragment.instantiate(Fragment.java:391)
  05-22 10:35:35.081: E/AndroidRuntime(3483):     ... 24 more
  </code></pre>
  
  <p>Am I using the SupportMapFragment wrong or not inflating it correctly?  Any help would be appreciated!</p>