What does this mean? I have been fighting with this ListView
that I have using an ArrayAdapter
. I wrote this nice dialog fragment that I have calling back to an updateUI listner cause I want to update this ListView
I have in my fragment from the DialogFragment
at first the ArrayAdapter
was a complex type of a class i Created:
ArrayAdapter<Location> theLocations;
...
//in oncreateview
theLocations = new ArrayAdapter<Location>(mContext, R.layout.location_row, locations);
//here locations is an ArrayList<Location>
then I have:
public void onUIUpdate(Location l) { //called from dialog fragment
locations.add(l);
theLocations.notifyDataSetChanged();
}
then that gave the above error so I switched it to use just a
String[] locationNames = new String[sizeofLocations];
theLocations=new ArrayAdapter<String>(mContext, R.layout.location_Row, locationNames );
public void onUIUpdate(Location l) {
locations.add(l);
locationNames = new String[locations.size()];
for(locations.size() etc...) {
locationNames [i] = new String(locations.get(i).getName());
}
theLocations.notifyDataSetChanged();
}
this didn't error out in my update method (That updates the ui) but it didn't update anything. So I am lost as to how to update this ArrayAdapter, I thought notifyChange was supposed to do it, but it either does nothing or throws the above error.
I have no issues with my SimpleCursorAdapters elsewhere in my program (As long as my cursors remain open and i call a requery on them).
Any insights into what I am doing wrong?
Upon request here is my layout for the R.layout.location_row
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content" android:layout_width="fill_parent" android:orientation="horizontal">
<TextView android:text="@+id/TextView01" android:layout_height="wrap_content" android:id="@+id/location_name"
android:textSize="15px" android:layout_marginTop="10px" android:layout_width="wrap_content"></TextView>
<TextView android:text="|" android:layout_height="wrap_content"
android:textSize="15px" android:layout_marginTop="6px" android:layout_width="wrap_content"></TextView>
<TextView android:text="@+id/TextView01" android:layout_height="wrap_content" android:id="@+id/location_lat"
android:textSize="15px" android:layout_marginTop="6px" android:layout_width="wrap_content"></TextView>
<TextView android:text="|$" android:layout_height="wrap_content"
android:textSize="15px" android:layout_marginTop="6px" android:layout_width="wrap_content"></TextView>
<TextView android:text="@+id/TextView01" android:layout_height="wrap_content" android:id="@+id/location_lon"
android:textSize="15px" android:layout_marginTop="6px" android:layout_width="wrap_content"></TextView>
</LinearLayout>
As we can read in http://developer.android.com/reference/android/widget/ArrayAdapter.html ArrayAdapter just works with strings on textviews. You can use this constructor
ArrayAdapter(Context context, int resource, int textViewResourceId, List<T> objects)
specifyng the id of a TextView inside your layout or override
getView(int, View, ViewGroup)
returning a view of your custom type.
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