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POProblems with populating a ListView with SQLite
 

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  1. POProblems with populating a ListView with SQLite
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    <p>I'm trying to populate my own SQLite db into the android listview for viewing but have a problem, the code runs but will generate an "unexpected quitting". </p> <p>I've checked my DDMS and the emulator has my SQLite file within the database which was copied from the assets file. </p> <p>I'm not sure what went wrong here, can anyone can give me some pointers where i should start looking from? Or is there anything even wrong with the code I've provided below ? Any where i can check for potential kinks in the code ? </p> <p>Thank you !!!</p> <pre><code>private void fillData() { Cursor drugsCursor = mDbHelper.fetchAllDrugs(); startManagingCursor(drugsCursor); //Creating an array to specify the fields we want String[] from = new String[] {DrugsDbAdapter.KEY_ROWID}; //and an array of the fields we want to bind in the view int[] to = new int[] {R.id.text1}; //To Create the simple cursor adapter and set it to display SimpleCursorAdapter drugs = new SimpleCursorAdapter(this, R.layout.drug_row, drugsCursor, from, to); setListAdapter(drugs); } </code></pre> <p>and the DrugsDbAdapter.java handling the Cursor is here</p> <pre><code>public Cursor fetchAllDrugs() { return mDb.query(DATABASE_TABLE, new String[] {KEY_ROWID, KEY_DRUG, KEY_CONTENT, KEY_INDICATION, KEY_DOSAGE, KEY_SPECIALPRECAUTION} , null, null, null, null, null); } </code></pre> <p>The output of my LogCat (the red color portion of the output- should i be posting the whole log?) is: </p> <pre><code>05-25 18:12:22.338: WARN/dalvikvm(27763): threadid=1: thread exiting with uncaught exception (group=0x4001d800) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): FATAL EXCEPTION: main 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.paad.medboxsd/com.paad.medboxsd.medboxsd}: java.lang.NullPointerException 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2663) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2679) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at android.app.ActivityThread.access$2300(ActivityThread.java:125) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:2033) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at android.os.Handler.dispatchMessage(Handler.java:99) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at android.os.Looper.loop(Looper.java:123) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at android.app.ActivityThread.main(ActivityThread.java:4627) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at java.lang.reflect.Method.invokeNative(Native Method) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at java.lang.reflect.Method.invoke(Method.java:521) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at dalvik.system.NativeStart.main(Native Method) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): Caused by: java.lang.NullPointerException 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at com.paad.medboxsd.medboxsd.fillData(medboxsd.java:67) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at com.paad.medboxsd.medboxsd.onCreate(medboxsd.java:56) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2627) 05-25 18:12:22.434: ERROR/AndroidRuntime(27763): ... 11 more 05-25 18:12:22.514: WARN/ActivityManager(59): Force finishing activity com.paad.medboxsd/.medboxsd 05-25 18:12:23.034: WARN/ActivityManager(59): Activity pause timeout for HistoryRecord{450fc298 com.paad.medboxsd/.medboxsd} </code></pre>
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Guidance
A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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