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PONoClassDefError android.security.MessageDigest Error
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  1. PONoClassDefError android.security.MessageDigest Error
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    copied!<p>Im following tutorials online in order to track currnet location. This is the code. Ive looked through lots of replies on this site yet i cant get it working. </p> <p>main.xml</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" tools:context=".MainActivity" &gt; &lt;fragment android:id="@+id/map" android:layout_width="match_parent" android:layout_height="match_parent" class="com.google.android.gms.maps.MapFragment" /&gt; &lt;/RelativeLayout&gt; </code></pre> <p>android manifest.xml</p> <pre><code> &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="in.wptrafficanalyzer.locationingooglemap" android:versionCode="1" android:versionName="1.0" &gt; &lt;uses-sdk android:minSdkVersion="4" android:targetSdkVersion="15" /&gt; &lt;uses-permission android:name="android.permission.INTERNET" /&gt; &lt;uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/&gt; &lt;application android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@style/AppTheme" &gt; &lt;uses-library android:name="com.google.android.maps" /&gt; &lt;activity android:name=".MainActivity" android:label="@string/title_activity_main" &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>currentlocationoverlay.java</p> <pre><code> package in.wptrafficanalyzer.locationingooglemap; import java.util.ArrayList; import android.graphics.drawable.Drawable; import android.util.Log; import com.google.android.maps.ItemizedOverlay; import com.google.android.maps.OverlayItem; public class CurrentLocationOverlay extends ItemizedOverlay&lt;OverlayItem&gt; { private ArrayList&lt;OverlayItem&gt; mOverlays = new ArrayList&lt;OverlayItem&gt;(); public CurrentLocationOverlay(Drawable defaultMarker) { super(boundCenterBottom(defaultMarker)); } // Executed, when populate() method is called @Override protected OverlayItem createItem(int arg0) { return mOverlays.get(arg0); } @Override public int size() { return mOverlays.size(); } public void addOverlay(OverlayItem overlay){ mOverlays.add(overlay); populate(); // Calls the method createItem() } @Override protected boolean onTap(int arg0) { Log.d("Tapped", mOverlays.get(arg0).getSnippet()); return true; } } </code></pre> <p>mainactivity.java</p> <pre><code> package in.wptrafficanalyzer.locationingooglemap; import java.util.List; import android.graphics.drawable.Drawable; import android.location.Criteria; import android.location.Location; import android.location.LocationListener; import android.location.LocationManager; import android.os.Bundle; import android.view.Menu; import android.widget.TextView; import com.google.android.maps.GeoPoint; import com.google.android.maps.MapActivity; import com.google.android.maps.MapController; import com.google.android.maps.MapView; import com.google.android.maps.Overlay; import com.google.android.maps.OverlayItem; public class MainActivity extends MapActivity implements LocationListener { private MapView mapView; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); // Getting reference to MapView mapView = (MapView) findViewById(R.id.map); // Setting Zoom Controls on MapView mapView.setBuiltInZoomControls(true); // Getting LocationManager object from System Service LOCATION_SERVICE LocationManager locationManager = (LocationManager) getSystemService(LOCATION_SERVICE); // Creating a criteria object to retrieve provider Criteria criteria = new Criteria(); // Getting the name of the best provider String provider = locationManager.getBestProvider(criteria, true); // Getting Current Location Location location = locationManager.getLastKnownLocation(provider); if(location!=null){ onLocationChanged(location); } locationManager.requestLocationUpdates(provider, 20000, 0, this); } @Override public boolean onCreateOptionsMenu(Menu menu) { getMenuInflater().inflate(R.menu.activity_main, menu); return true; } @Override protected boolean isRouteDisplayed() { // TODO Auto-generated method stub return false; } @Override public void onLocationChanged(Location location) { TextView tvLocation = (TextView) findViewById(R.id.map); // Getting latitude double latitude = location.getLatitude(); // Getting longitude double longitude = location.getLongitude(); // Setting latitude and longitude in the TextView tv_location tvLocation.setText("Latitude:" + latitude + ", Longitude:"+ longitude ); // Creating an instance of GeoPoint corresponding to latitude and longitude GeoPoint point = new GeoPoint((int)(latitude * 1E6), (int)(longitude*1E6)); // Getting MapController MapController mapController = mapView.getController(); // Locating the Geographical point in the Map mapController.animateTo(point); // Applying a zoom mapController.setZoom(15); // Redraw the map mapView.invalidate(); // Getting list of overlays available in the map List&lt;Overlay&gt; mapOverlays = mapView.getOverlays(); // Creating a drawable object to represent the image of mark in the map Drawable drawable = this.getResources().getDrawable(R.drawable.cur_position); // Creating an instance of ItemizedOverlay to mark the current location in the map CurrentLocationOverlay currentLocationOverlay = new CurrentLocationOverlay(drawable); // Creating an item to represent a mark in the overlay OverlayItem currentLocation = new OverlayItem(point, "Current Location", "Latitude : " + latitude + ", Longitude:" + longitude); // Adding the mark to the overlay currentLocationOverlay.addOverlay(currentLocation); // Clear Existing overlays in the map mapOverlays.clear(); // Adding new overlay to map overlay mapOverlays.add(currentLocationOverlay); } @Override public void onProviderDisabled(String provider) { // TODO Auto-generated method stub } @Override public void onProviderEnabled(String provider) { // TODO Auto-generated method stub } @Override public void onStatusChanged(String provider, int status, Bundle extras) { // TODO Auto-generated method stub } } </code></pre> <p>This is my logcat log</p> <pre><code> 03-01 10:31:12.257: I/dalvikvm(18886): threadid=3: reacting to signal 3 03-01 10:31:12.267: I/dalvikvm(18886): Wrote stack traces to '/data/anr/traces.txt' 03-01 10:31:12.367: I/dalvikvm(18886): Could not find method android.security.MessageDigest.getInstance, referenced from method com.google.android.maps.KeyHelper.getSignatureFingerprint 03-01 10:31:12.367: W/dalvikvm(18886): VFY: unable to resolve static method 153: Landroid/security/MessageDigest;.getInstance (Ljava/lang/String;)Landroid/security/MessageDigest; 03-01 10:31:12.367: D/dalvikvm(18886): VFY: replacing opcode 0x71 at 0x0038 03-01 10:31:12.377: D/AndroidRuntime(18886): Shutting down VM 03-01 10:31:12.377: W/dalvikvm(18886): threadid=1: thread exiting with uncaught exception (group=0x40a2a1f8) 03-01 10:31:12.397: E/AndroidRuntime(18886): FATAL EXCEPTION: main 03-01 10:31:12.397: E/AndroidRuntime(18886): java.lang.NoClassDefFoundError: android.security.MessageDigest 03-01 10:31:12.397: E/AndroidRuntime(18886): at com.google.android.maps.KeyHelper.getSignatureFingerprint(KeyHelper.java:60) 03-01 10:31:12.397: E/AndroidRuntime(18886): at com.google.android.maps.MapActivity.createMap(MapActivity.java:552) 03-01 10:31:12.397: E/AndroidRuntime(18886): at com.google.android.maps.MapActivity.onCreate(MapActivity.java:422) 03-01 10:31:12.397: E/AndroidRuntime(18886): at in.wptrafficanalyzer.locationingooglemap.MainActivity.onCreate(MainActivity.java:26) 03-01 10:31:12.397: E/AndroidRuntime(18886): at android.app.Activity.performCreate(Activity.java:4492) 03-01 10:31:12.397: E/AndroidRuntime(18886): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1049) 03-01 10:31:12.397: E/AndroidRuntime(18886): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1920) 03-01 10:31:12.397: E/AndroidRuntime(18886): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1981) 03-01 10:31:12.397: E/AndroidRuntime(18886): at android.app.ActivityThread.access$600(ActivityThread.java:123) 03-01 10:31:12.397: E/AndroidRuntime(18886): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1147) 03-01 10:31:12.397: E/AndroidRuntime(18886): at android.os.Handler.dispatchMessage(Handler.java:99) 03-01 10:31:12.397: E/AndroidRuntime(18886): at android.os.Looper.loop(Looper.java:137) 03-01 10:31:12.397: E/AndroidRuntime(18886): at android.app.ActivityThread.main(ActivityThread.java:4424) 03-01 10:31:12.397: E/AndroidRuntime(18886): at java.lang.reflect.Method.invokeNative(Native Method) 03-01 10:31:12.397: E/AndroidRuntime(18886): at java.lang.reflect.Method.invoke(Method.java:511) 03-01 10:31:12.397: E/AndroidRuntime(18886): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:784) 03-01 10:31:12.397: E/AndroidRuntime(18886): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:551) 03-01 10:31:12.397: E/AndroidRuntime(18886): at dalvik.system.NativeStart.main(Native Method) 03-01 10:31:12.747: I/dalvikvm(18886): threadid=3: reacting to signal 3 03-01 10:31:12.757: I/dalvikvm(18886): Wrote stack traces to '/data/anr/traces.txt' 03-01 10:31:12.957: I/dalvikvm(18886): threadid=3: reacting to signal 3 03-01 10:31:12.967: I/dalvikvm(18886): Wrote stack traces to '/data/anr/traces.txt' 03-01 10:31:16.197: I/Process(18886): Sending signal. PID: 18886 SIG: 9 </code></pre> <p>Thanks in advance</p> <hr> <p>MessageDigest.java</p> <p>import java.security.NoSuchAlgorithmException;</p> <p>public class MessageDigest { private java.security.MessageDigest instance;</p> <pre><code>public MessageDigest() {} private MessageDigest(java.security.MessageDigest instance) { this.instance = instance; } public static MessageDigest getInstance(String algorithm) throws NoSuchAlgorithmException { if (algorithm == null) return null; try { if (algorithm.equals("SHA-1")) return (MessageDigest) Class.forName("android.security.Sha1MessageDigest").newInstance(); else if (algorithm.equals("MD5")) return (MessageDigest) Class.forName("android.security.Md5MessageDigest").newInstance(); } catch (Exception e) {} return new MessageDigest(java.security.MessageDigest.getInstance(algorithm)); } public void update(byte[] input) { instance.update(input); } public byte[] digest() { return instance.digest(); } public byte[] digest(byte[] input) { return instance.digest(input); } </code></pre> <p>}</p>
 

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