Databases
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    <p>after deleting an item, you need to call adapter's <code>notifyDataSetChanged()</code> method for refreshing the list contents</p> <p>fillData in your Activity Marks seems a little suspecious, i guess it should be as follow:</p> <pre><code>private void fillData() { Bundle extras = getIntent().getExtras(); String txt_sub_id = extras.getString("IDFach"); int test = Integer.parseInt(txt_sub_id); Cursor mCursor = db.rawQuery("SELECT _id, subid, name, mark, gewicht, datum FROM tbl_marks WHERE subid = '"+test+"';", null); startManagingCursor(mCursor); if (mCursor != null &amp;&amp; mCursor.moveToFirst()) { zahl1 = 0; zahl2 = 0; int intMark = mCursor.getColumnIndex("mark"); int intWeight = mCursor.getColumnIndex("gewicht"); do { float weight = mCursor.getFloat(intWeight); float mark = mCursor.getFloat(intMark); zahl1 = zahl1 + (weight * mark); zahl2 = zahl2 + weight; } while (mCursor.moveToNext()); mCursor.moveToFirst(); //bringing cursor to first place String[] from = new String[] { dbHelper.MARKS_ROW_NAME, dbHelper.MARKS_ROW_MARK, dbHelper.MARKS_ROW_GEWICHT, dbHelper.MARKS_ROW_DATUM}; int[] to = new int[] {R.id.txt_marks_row, R.id.txt_note, R.id.txt_gewicht, R.id.txt_datum}; SimpleCursorAdapter notes = new SimpleCursorAdapter(this, R.layout.show_marks, mCursor, from, to); setListAdapter(notes); txt_durchschnitt = (TextView)findViewById(R.id.txt_durchschnitt); result = zahl1 / zahl2; float result_neu = (float) (Math.round(result * 100) / 100.0); txt_durchschnitt.setText(""+result_neu); } </code></pre>
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    1. COOkay, I'll try that one. In my other (3 activitys) I don't use notifyDataSetChanged() there it's working ;)
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    2. COIt's not working. Same phenomen... `notes.notifyDataSetChanged();`
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    3. COi hope, there might be some difference in your code for those activities :)
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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.

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