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POjava.lang.RuntimeException with android application
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  1. POjava.lang.RuntimeException with android application
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    copied!<p>I'm having problems with my application. Shortly after compiling, the application randomly closes. Checking LogCat shows that it is a java.lang.RuntimeException. I've been through all of the forum posts on this, and have changed my code accordingly, but the problem still persists. Help?</p> <p>Code:</p> <pre><code>public class DroidzActivity extends Activity implements OnGesturePerformedListener { /** Called when the activity is first created. */ private GestureLibrary mLibrary; private static final String TAG = MainThread.class.getSimpleName(); @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(new MainGamePanel(this)); //requesting to turn the title OFF //requestWindowFeature(Window.FEATURE_NO_TITLE); //make it full screen //getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN); // set the MainGamePanel as the View Log.d(TAG, "View added"); mLibrary = GestureLibraries.fromRawResource(this, R.raw.gestures); if (!mLibrary.load()) { finish(); } GestureOverlayView gestures = (GestureOverlayView) findViewById(R.id.gestures); gestures.addOnGesturePerformedListener(this); } @Override protected void onDestroy() { Log.d(TAG, "Destroying..."); super.onDestroy(); } @Override protected void onStop() { Log.d(TAG, "Stopping..."); super.onStop(); } public void onGesturePerformed(GestureOverlayView overlay, Gesture gesture) { ArrayList&lt;Prediction&gt; predictions = mLibrary.recognize(gesture); if (predictions.size() &gt; 0) { if (predictions.get(0).score &gt; 1.0) { String action = predictions.get(0).name; if ("action_add".equals(action)) { Toast.makeText(this, "Adding a contact", Toast.LENGTH_SHORT).show(); } else if ("action_delete".equals(action)) { Toast.makeText(this, "Removing a contact", Toast.LENGTH_SHORT).show(); } else if ("action_refresh".equals(action)) { Toast.makeText(this, "Reloading contacts", Toast.LENGTH_SHORT).show(); } } } } </code></pre> <p>LogCat:</p> <pre><code>02-08 23:16:54.898: D/MainThread(3027): View added 02-08 23:16:54.937: D/AndroidRuntime(3027): Shutting down VM 02-08 23:16:54.937: W/dalvikvm(3027): threadid=1: thread exiting with uncaught exception (group=0x40015578) 02-08 23:16:54.949: E/AndroidRuntime(3027): FATAL EXCEPTION: main 02-08 23:16:54.949: E/AndroidRuntime(3027): java.lang.RuntimeException: Unable to start activity ComponentInfo{net.obviam.droidz/net.obviam.droidz.DroidzActivity}: java.lang.NullPointerException 02-08 23:16:54.949: E/AndroidRuntime(3027): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1651) 02-08 23:16:54.949: E/AndroidRuntime(3027): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1667) 02-08 23:16:54.949: E/AndroidRuntime(3027): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 02-08 23:16:54.949: E/AndroidRuntime(3027): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:935) 02-08 23:16:54.949: E/AndroidRuntime(3027): at android.os.Handler.dispatchMessage(Handler.java:99) 02-08 23:16:54.949: E/AndroidRuntime(3027): at android.os.Looper.loop(Looper.java:130) 02-08 23:16:54.949: E/AndroidRuntime(3027): at android.app.ActivityThread.main(ActivityThread.java:3687) 02-08 23:16:54.949: E/AndroidRuntime(3027): at java.lang.reflect.Method.invokeNative(Native Method) 02-08 23:16:54.949: E/AndroidRuntime(3027): at java.lang.reflect.Method.invoke(Method.java:507) 02-08 23:16:54.949: E/AndroidRuntime(3027): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:842) 02-08 23:16:54.949: E/AndroidRuntime(3027): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:600) 02-08 23:16:54.949: E/AndroidRuntime(3027): at dalvik.system.NativeStart.main(Native Method) 02-08 23:16:54.949: E/AndroidRuntime(3027): Caused by: java.lang.NullPointerException 02-08 23:16:54.949: E/AndroidRuntime(3027): at net.obviam.droidz.DroidzActivity.onCreate(DroidzActivity.java:42) 02-08 23:16:54.949: E/AndroidRuntime(3027): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 02-08 23:16:54.949: E/AndroidRuntime(3027): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1615) 02-08 23:16:54.949: E/AndroidRuntime(3027): ... 11 more </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="net.obviam.droidz" android:versionCode="1" android:versionName="1.0" &gt; &lt;uses-sdk android:minSdkVersion="10" /&gt; &lt;application android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:debuggable="true"&gt; &lt;activity android:name=".DroidzActivity" 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; </code></pre> <p></p>
 

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