Hi there,
I am working on a little Activity with a ListView. This ListView
should contain rows, that are LinearLayouts with vertical orientation
created by a custom Adapter based on the BaseAdapter. The Adapter also
creates a couple of RelativeLayouts (with three TextViews) that should
be childs of a single row-linear-layout. The number of the
RelativeLayouts depends on the dataset at that specific position.
Well, the ListView and Adapter seem to work, but the whole layout of a
single row is not as intended. A single row (with the vertical
LinearLayout) eats up nearly the whole space of the ListView and only
the content of the first subrow is shown, leaving the rest of space
empty.
As first I thought, that there is somewhere placed a
layout_height="fill_parent" at the wrong place, but there isn't. I
looked here in the archives, but couldn't find anything appropriate to
that problem. Do I need an ExpandableListView (but without the dynamic
expansion, only with dynamic creation)? Can someone point me to the
right direction?
Cheers,
Rutton.
The ListView Layout looks like that:
<ListView>
<LinearLayout> --- beginning of a row
<RelativeLayout> -- subrow no. 1 (dynamically generated)
<TextView/> <TextView/> <TextView/>
</RelativeLayout>
....
<RelativeLayout> -- subrow no. n (dynamically generated)
...
</RelativeLayout>
</LinearLayout> -- end of a row
.... --- next row
</ListView>
For this, I have written a simple ListActivity (to simplify for now)
that contains two layout files.
This is for a single row in the ListView, it's more or less a place
marker.
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/
android"
android:id="@+id/searchitem" android:layout_width="fill_parent"
android:layout_height="wrap_content" orientation="vertical">
</LinearLayout>
And the following (there can be more than one of them) should be
contained in each row (see the LinearLayout above).
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/
android"
android:id="@+id/searchrow" android:layout_width="fill_parent"
android:layout_height="wrap_content" orientation="horizontal">
<TextView android:id="@+id/searchitemleft"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_toLeftOf="@+id/
centermargin"
android:gravity="left">
</TextView>
<TextView android:id="@+id/centermargin"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerHorizontal="true">
</TextView>
<TextView android:id="@+id/searchitemright"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:layout_toRightOf="@
+id/centermargin"
android:gravity="right" android:paddingRight="12dp">
</TextView>
</RelativeLayout>
The related code (an example version) in the Adapter to create this
constellation is the following:
@Override
public View getView(int position, View convertView, ViewGroup parent)
{
LinearLayout ll;
Log.d( TAG, "MyAdapter: -- starting -- ");
if( convertView == null ) {
ll = (LinearLayout)
LayoutInflater.from(ctx).inflate( R.layout.item, parent, false );
Log.d( TAG, "MyAdapter: generating new ll." );
} else {
ll = (LinearLayout) convertView;
Log.d( TAG, "MyAdapter: LL childcount is " + ll.getChildCount() +
".");
}
int maxSize = 3; // the subrow size is fixed in this example
Log.d( TAG, "MyAdapter: maxSize=" + maxSize + ".");
int i = 0;
// maxSize = 1;
while ( i < maxSize ) {
RelativeLayout crrLayout;
if ( i < ll.getChildCount())
crrLayout = (RelativeLayout)ll.getChildAt( i );
else {
Log.d(TAG, "MyAdapter: creating new child at position " + i +
".");
crrLayout = (RelativeLayout)
LayoutInflater.from(ctx).inflate( R.layout.itemrow, ll, false );
LinearLayout.LayoutParams lp = new
LinearLayout.LayoutParams(LayoutParams.FILL_PARENT,
LayoutParams.WRAP_CONTENT );
ll.addView(crrLayout, i, lp);
// ll.addView( crrLayout );
}
TextView searchItemLeft = (TextView)
crrLayout.findViewById( R.id.searchitemleft);
searchItemLeft.setText( st.getLeftString() + " " + i );
TextView searchItemRight = (TextView)
crrLayout.findViewById( R.id.searchitemright);
searchItemRight.setText( st.getRightString() + " " + i );
i++;
}
while( i < ll.getChildCount()) {
ll.removeViewAt( i );
i++;
}
Log.d( TAG, "MyAdapter: number of rows is " + i + "." );
Log.d( TAG, "MyAdapter: -- ending -- ");
return ll;
}
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