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POAndroid ExpandableListView Strange behavior with Mouse wheel
 

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  1. POAndroid ExpandableListView Strange behavior with Mouse wheel
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    <p>I have implemented an ExpandableListView that uses a SimpleCursorTreeAdapter to populate the children. But I am getting some unusual behavior. Clicking on the parent causes the children to show but then I nothing else works. What this means is that I can't expand other parents or collapse children. When debugging I accidentally used the mouse scroll wheel and the ExpandableListView started fully working as expected.<br> Here is the code for the children:</p> <pre><code>private void showEvents(final Cursor cursor) { ExpandableListView lv1 = this.getExpandableListView(); lv1.setScrollbarFadingEnabled(false); SimpleCursorTreeAdapter treeAdapter = new SimpleCursorTreeAdapter (this, cursor, R.layout.simplerow, FROM, TO, R.layout.childrow, FROMCHILD, TOCHILD) { @Override public void setViewText(TextView v, String text) { super.setViewText(v, convText(v, text, cursor)); } @Override protected Cursor getChildrenCursor(Cursor parentCursor) { int groupPos = parentCursor.getPosition(); Log.d("TEST", "getChildrenCursor() for groupPos " + groupPos); String childSql = "select f._id, f.NAME as FUNDNAME, " + "f.value as AMOUNT_OWNED " + "from funds f " + "where f.asset_class = " + parentCursor.getInt(0) + ";"; Log.d("getChildrenCursor", childSql); SQLiteDatabase db = pfdata.getReadableDatabase(); Cursor assetsCursor = db.rawQuery(childSql, null); Log.d("getChildrenCursor", Integer.toString(assetsCursor.getCount())); return assetsCursor; } }; lv1.setAdapter(treeAdapter); } </code></pre> <p>Is there someone who can explain why this is happening or offer some advise? Thank you for your time.</p> <p>So I now know the line of code that causes the behavior. The activity consists of several listviews plus the expandable listview that is above. I started commenting out code and found that by removing this one line of code elsewhere in the activity, everything works fine.</p> <pre><code>RB1lv.setScrollIndicators </code></pre> <p>and it is defined a few lines up as follows:</p> <pre><code>ListView RB1lv = (ListView) findViewById(R.id.list3); </code></pre> <p>Good news is that I don't have this odd behavior anymore. But I have no idea why changing the scroll indicators on a separate listview would cause this.</p>
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    1. USClavijo
    1. USClavijo
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      1. POAndroid ExpandableListView Strange behavior with Mouse wheel
      1. USNam Trung
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    1. COwhy you are using: startManagingCursor(assetsCursor); Delete it may be ExpadableList cannot control the cursor any more.
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      1. POAndroid ExpandableListView Strange behavior with Mouse wheel
      1. USAnis BEN NSIR
    2. COI removed it but it did not change the behavior. I appreciate the suggestion.
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      1. POAndroid ExpandableListView Strange behavior with Mouse wheel
      1. USClavijo
    3. COcan you remove also db.close();
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      1. POAndroid ExpandableListView Strange behavior with Mouse wheel
      1. USAnis BEN NSIR
 

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