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POAndroid SimpleCursorAdapter getView how to put previous value back
 

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    <p>I have a simple <code>ListActivity</code> that uses the <code>SimpleCursorAdapter</code>. I allow users to change one of the values using an <code>EditText</code>. I perform simple validation to make sure that the number entered is less than 100. If the user entered value fails validation, I want to put the old value back.</p> <p>I've tried a few different ways. My current approach is to requery it out of the database, but this isn't working. I'm always getting the value associated with the last entry in the <code>ListActivity</code>, regardless of which one was actually changed. I noticed in <code>LogCat</code> that <code>onTextChanged</code> and <code>afterTextChanged</code> are firing multiple times for each row in the <code>ListActivity</code> and not just the one that changed.</p> <p>Here's the code:</p> <pre><code>public class MySimpleCursorAdapter extends SimpleCursorAdapter { Context lcontext; boolean changed; String lastval; private PortfolioData pfdata; public MySimpleCursorAdapter(Context context, int layout, Cursor c, String[] from, int[] to) { super(context, layout, c, from, to); lcontext = context; } @Override public View getView(final int pos, View v, ViewGroup parent) { v = super.getView(pos, v, parent); final EditText et = (EditText) v.findViewById(R.id.classpercentage); final TextView tv = (TextView) v.findViewById(R.id._id); et.addTextChangedListener(new TextWatcher() { public void afterTextChanged(Editable s) { Log.d("TEST", "In afterTextChanged s=" + s.toString() + " " + tv.getText() + " POS = " + Integer.toString(pos)); lastval = tv.getText().toString(); if (changed == true) { String enteredValue = s.toString(); if (checkNullValues(enteredValue)) { if (Float.parseFloat(enteredValue.trim()) &gt; 100.0f) { AlertDialog.Builder builder = new AlertDialog.Builder( lcontext); builder.setMessage("Percentage Value should be Less than 100"); builder.setPositiveButton("Ok", new DialogInterface.OnClickListener() { public void onClick( DialogInterface arg0, int arg1) { String sql = "select c.percentage as PERCENTAGE " + "from asset_classes c WHERE c._id = " + lastval + ";"; pfdata = new PortfolioData(lcontext); SQLiteDatabase db = pfdata.getReadableDatabase(); Cursor cursor = db.rawQuery(sql, null); if (cursor != null) { cursor.moveToFirst(); et.setText(cursor.getString(0)); } cursor.close(); pfdata.close(); } }); // End of the Alert if (changed == true) { builder.show(); } } } changed = false; } } public void beforeTextChanged(CharSequence s, int start, int count, int after) { // Log.d("TEST", "In beforeTextChanged start=" + // Integer.toString(start) +" count="+ Integer.toString(count) + // " after=" + Integer.toString(after) + " s=" + s + " " + tv); } public void onTextChanged(CharSequence s, int start, int before, int count) { Log.d("TEST", "In onTextChanged start=" + Integer.toString(start) + " count=" + Integer.toString(count) + " before=" + Integer.toString(before) + " s=" + s + " " + tv); changed = true; } }); return v; } } </code></pre> <p>I would really appreciate a fresh perspective on this. As always, thanks in advance.</p>
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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.

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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