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PONeed help with Android NullPointer problem
 

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  1. PONeed help with Android NullPointer problem
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    <p>I'm currently making a game and I came across this annoying problem. Tried to google it but no luck so far. I have a class defined in its own file(code here is not of my game but a simplified one with same errors):</p> <pre><code>package graf.grafika; public class MyClass { int number; } </code></pre> <p>And the problem is in myMethod(Application stops unexpectedly):</p> <pre><code>public class aktivnost extends Activity { MyClass[] myclass = new MyClass[5]; void myMethod() { //Error myclass[0].number = 1; } public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); requestWindowFeature(Window.FEATURE_NO_TITLE); myMethod(); setContentView(new Panel(this)); } ...other required methods } </code></pre> <p>Logcat:</p> <pre><code>07-02 10:01:13.507: ERROR/AndroidRuntime(3203): FATAL EXCEPTION: main 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): java.lang.RuntimeException: Unable to start activity ComponentInfo{graf.grafika/graf.grafika.aktivnost}: java.lang.NullPointerException 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1736) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1752) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at android.app.ActivityThread.access$1500(ActivityThread.java:123) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:993) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at android.os.Handler.dispatchMessage(Handler.java:99) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at android.os.Looper.loop(Looper.java:126) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at android.app.ActivityThread.main(ActivityThread.java:3997) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at java.lang.reflect.Method.invokeNative(Native Method) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at java.lang.reflect.Method.invoke(Method.java:491) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at dalvik.system.NativeStart.main(Native Method) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): Caused by: java.lang.NullPointerException 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at graf.grafika.aktivnost.myMethod(aktivnost.java:17) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at graf.grafika.aktivnost.onCreate(aktivnost.java:23) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1700) 07-02 10:01:13.507: ERROR/AndroidRuntime(3203): ... 11 more </code></pre> <p>Could anyone please help me fix this? I'm pretty new to java programming btw.</p>
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