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POArrayAdapter for FragmentList crashes applications
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  1. POArrayAdapter for FragmentList crashes applications
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    copied!<p>This is my code for an android application:</p> <pre><code>public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main); //Attempting to set the Fragment System.err.println("Starting"); FragmentManager fm = getFragmentManager(); FragmentTransaction ft = fm.beginTransaction(); System.err.println("Adding the fragment"); FileBrowser fb = new FileBrowser(); ft.add(R.id.flFBrowser,fb); ft.commit(); System.err.println("Done"); fb.test(); } </code></pre> <p>Where the file browser only has this:</p> <pre><code>public void test(){ System.err.println("Entre a test!!!"); String[] MyList = {"Hello","world","of","the","lists"}; System.err.println("File Row ID" + Integer.toString(R.layout.file_row)); ArrayAdapter&lt;String&gt; aa = new ArrayAdapter&lt;String&gt;(getActivity(), R.layout.file_row, MyList); //setListAdapter(aa); } </code></pre> <p>The thing is if I comment the ArrayAdapter constructor the program does not crash If I uncomment it, it crashes with the following error:</p> <pre><code>06-11 10:12:38.150: ERROR/AndroidRuntime(4804): FATAL EXCEPTION: main 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.ccr/com.ccr.Main}: java.lang.NullPointerException 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1748) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1764) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at android.app.ActivityThread.access$1500(ActivityThread.java:122) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1002) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at android.os.Handler.dispatchMessage(Handler.java:99) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at android.os.Looper.loop(Looper.java:132) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at android.app.ActivityThread.main(ActivityThread.java:4025) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at java.lang.reflect.Method.invokeNative(Native Method) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at java.lang.reflect.Method.invoke(Method.java:491) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:841) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:599) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at dalvik.system.NativeStart.main(Native Method) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): Caused by: java.lang.NullPointerException 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at android.widget.ArrayAdapter.init(ArrayAdapter.java:314) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at android.widget.ArrayAdapter.&lt;init&gt;(ArrayAdapter.java:128) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at com.ccr.FileBrowser.test(FileBrowser.java:13) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at com.ccr.Main.onCreate(Main.java:24) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1048) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1712) 06-11 10:12:38.150: ERROR/AndroidRuntime(4804): ... 11 more </code></pre> <p>Does any one have any Idea what I could be doing wrong?</p> <p>Thanks for any help!</p> <p>UPDATE:</p> <p>The problem seems to be specifically that getActivity returns null? Any Idea why this is?</p>
 

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