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POGetSupportFragmentManager always returns null
 

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  1. POGetSupportFragmentManager always returns null
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    <p>I am working on a small android application and whenever I call <code>GoogleMap map = ((SupportMapFragment)getSupportFragmentManager().findFragmentById(R.id.map)).getMap()</code>, it always returns null. I am trying to run this app on device with API 17 with Google Play.</p> <p>MapActivity:</p> <pre><code>public class MapActivity extends FragmentActivity implements LocationSource, LocationListener { private static final String TAG = "MapActivity"; private String device = android.os.Build.MODEL; private static final String UPDATE_LOC_URL = "http://lab.uzlabina.cz/~vongrad/Tracker/update_loc.php"; private static final String LOAD_LOCATIONS = "http://lab.uzlabina.cz/~vongrad/Tracker/load_locations.php"; private static final int ADD_MAP_PIN = 1; private Controller controller; private LocationManager locationManager; private OnLocationChangedListener locListener; private GoogleMap map; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); controller = Controller.getInstance(new User()); controller.setUserName(device); locationManager = (LocationManager)getSystemService(LOCATION_SERVICE); if (locationManager != null){ boolean isGPSEnabled = locationManager.isProviderEnabled(LocationManager.GPS_PROVIDER); boolean isNetworkEnabled = locationManager.isProviderEnabled(LocationManager.NETWORK_PROVIDER); Log.d(TAG, "GPS " + isGPSEnabled + "Net " + isNetworkEnabled); if (isGPSEnabled){ locationManager.requestLocationUpdates(LocationManager.GPS_PROVIDER, 50L, 1F, this); } else if (isNetworkEnabled){ locationManager.requestLocationUpdates(LocationManager.NETWORK_PROVIDER, 500L, 10F, this); } else{ Toast.makeText(this, "GPS is disabled", Toast.LENGTH_LONG); } } else { Toast.makeText(this, "Something went wrrong", Toast.LENGTH_LONG); } setUpMapIfNeeded(); } public void onResume(){ //updateLocation.start(); super.onResume(); //setUpMapIfNeeded(); if (locationManager != null){ map.setMyLocationEnabled(true); } } public void onPause(){ //loadFriendsLocations.stop(); if (locationManager != null){ locationManager.removeUpdates(this); } super.onPause(); } private void setUpMapIfNeeded() { if (map == null){ map = ((SupportMapFragment)getSupportFragmentManager().findFragmentById(R.id.map)).getMap(); map.setLocationSource(this); if (map != null){ setUpMap(); } } } private void setUpMap() { map.setMyLocationEnabled(true); loadFriendsLocations.start(); } </code></pre> <p>Layout:</p> <pre><code> &lt;RelativeLayout 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:paddingBottom="@dimen/activity_vertical_margin" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:paddingTop="@dimen/activity_vertical_margin" tools:context=".MapActivity" &gt; &lt;TextView android:id="@+id/header" android:layout_width="wrap_content" android:layout_height="wrap_content" android:text="@string/hello_world" /&gt; &lt;fragment android:id="@+id/map" android:name="com.google.android.gms.maps.SupportMapFragment" android:layout_width="match_parent" android:layout_height="match_parent" /&gt; &lt;/RelativeLayout&gt; </code></pre> <p>Manifest:</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="cz.vongrad.locator" android:versionCode="1" android:versionName="1.0" &gt; &lt;uses-sdk android:minSdkVersion="11" android:targetSdkVersion="17" /&gt; &lt;permission android:name="cz.vongrad.locator.permission.MAPS_RECEIVE" android:protectionLevel="signature"/&gt; &lt;uses-permission android:name="cz.vongrad.locator.permission.MAPS_RECEIVE"/&gt; &lt;uses-permission android:name="android.permission.INTERNET"/&gt; &lt;uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/&gt; &lt;uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/&gt; &lt;uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/&gt; &lt;!-- The following two permissions are not required to use Google Maps Android API v2, but are recommended. --&gt; &lt;uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/&gt; &lt;uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/&gt; &lt;uses-feature android:glEsVersion="0x00020000" android:required="true"/&gt; &lt;application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" android:debuggable="true"&gt; &lt;meta-data android:name="com.google.android.maps.v2.API_KEY" android:value="blabla"/&gt; &lt;activity android:name="cz.vongrad.locator.MapActivity" android:label="@string/app_name" &gt; &lt;intent-filter&gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;/application&gt; &lt;/manifest&gt; </code></pre> <p>LogCat:</p> <pre><code> 10-05 19:40:13.284: E/AndroidRuntime(2697): FATAL EXCEPTION: main 10-05 19:40:13.284: E/AndroidRuntime(2697): java.lang.RuntimeException: Unable to start activity ComponentInfo{cz.vongrad.locator/cz.vongrad.locator.MapActivity}: java.lang.NullPointerException 10-05 19:40:13.284: E/AndroidRuntime(2697): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2180) 10-05 19:40:13.284: E/AndroidRuntime(2697): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 10-05 19:40:13.284: E/AndroidRuntime(2697): at android.app.ActivityThread.access$600(ActivityThread.java:141) 10-05 19:40:13.284: E/AndroidRuntime(2697): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 10-05 19:40:13.284: E/AndroidRuntime(2697): at android.os.Handler.dispatchMessage(Handler.java:99) 10-05 19:40:13.284: E/AndroidRuntime(2697): at android.os.Looper.loop(Looper.java:137) 10-05 19:40:13.284: E/AndroidRuntime(2697): at android.app.ActivityThread.main(ActivityThread.java:5041) 10-05 19:40:13.284: E/AndroidRuntime(2697): at java.lang.reflect.Method.invokeNative(Native Method) 10-05 19:40:13.284: E/AndroidRuntime(2697): at java.lang.reflect.Method.invoke(Method.java:511) 10-05 19:40:13.284: E/AndroidRuntime(2697): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 10-05 19:40:13.284: E/AndroidRuntime(2697): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 10-05 19:40:13.284: E/AndroidRuntime(2697): at dalvik.system.NativeStart.main(Native Method) 10-05 19:40:13.284: E/AndroidRuntime(2697): Caused by: java.lang.NullPointerException 10-05 19:40:13.284: E/AndroidRuntime(2697): at cz.vongrad.locator.MapActivity.setUpMapIfNeeded(MapActivity.java:115) 10-05 19:40:13.284: E/AndroidRuntime(2697): at cz.vongrad.locator.MapActivity.onCreate(MapActivity.java:86) 10-05 19:40:13.284: E/AndroidRuntime(2697): at android.app.Activity.performCreate(Activity.java:5104) 10-05 19:40:13.284: E/AndroidRuntime(2697): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 10-05 19:40:13.284: E/AndroidRuntime(2697): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) 10-05 19:40:13.284: E/AndroidRuntime(2697): ... 11 more </code></pre> <p>I would appreciate any suggestions. Thanks in advance!</p>
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    1. USHusky
    1. USHusky
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    1. This table or related slice is empty.
    1. COcan you post the manifest
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      1. POGetSupportFragmentManager always returns null
      1. USRaghunandan
    2. COcheck your device location services .. both options should be marked as tick . 1 ) use wireless networks and 2) location and google
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      1. POGetSupportFragmentManager always returns null
      1. USshujatAli
    3. COI did, everything is turned on...May the issue be that the Google Play Serices out of date?
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      1. POGetSupportFragmentManager always returns null
      1. USHusky
 

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