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POCan't get any data from sqlite db on Android
 

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    <p>I have a DB helper that does this function:</p> <pre><code>public Cursor getCourseNames() throws SQLException { mDb = mDbHelper.getReadableDatabase(); return mDb.query("Course",null, COURSE_ROWID, null, null, null, null, null); } </code></pre> <p>The table it is pulling from looks like this:</p> <pre><code>private static final String COURSE_ID = "CourseID"; private static final String COURSE_NAME = "Name"; private static final String COURSE_CODE = "CourseCode"; private static final String COURSE_ROWID = "_id"; private static final String COURSE_CREATE = "create table " + "Course" + " ( " + COURSE_ROWID + " integer primary key autoincrement, " + COURSE_ID + "integer not null," + COURSE_NAME + "text not null, " + COURSE_CODE + "text not null" + ");"; </code></pre> <p>In my main activity I try this and get a null pointer...</p> <pre><code>public void buildCoursetoChapterList(){ Cursor cursor = dbHelper.getCourseNames(); SimpleCursorAdapter adapter = new SimpleCursorAdapter(MainActivity.this, android.R.layout.simple_list_item_1, cursor, null, null); ListView listView = (ListView) findViewById(R.id.list); listView.setAdapter(adapter); } </code></pre> <p>Anyone have an idea what my problem is? I put data into the db earlier on: </p> <pre><code>if(dbHelper.checkCourseForData() !=null) { setContentView(R.layout.classlist); } else { dbHelper.addFirstClassToDb(course_code, name, course_id); Log.d+i("Course added to DB", course_code + " " + name + " " + course_id); } </code></pre> <p>tried this and still nothing, I want to select all the Name values within Course. No clue... losing hope.</p> <pre><code>public Cursor checkCourseForData() throws SQLException { String[] values = {COURSE_NAME}; Cursor mCursor = mDb.query("Course",values,COURSE_ROWID + "=" + "Name", null, null, null, null, null); if (mCursor != null) { mCursor.moveToFirst(); } return mCursor; } </code></pre>
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