Navigation Drawer does not recognize custom adapter layout

Question

Can someone point out what's the problem with this code snippet

Custom adapter

public class NavigationAdapter extends ArrayAdapter<NavItem> {
private Context context;
private NavItem[] values;

public NavigationAdapter(Context context, int layoutResourceId,NavItem[] values) {
    super(context, layoutResourceId);
    this.context = context;
    this.values = values;
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {
    final Holder holder;
    LayoutInflater vi = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
    View convertView1 = convertView;
    if (convertView1 == null) {
        holder = new Holder();
        convertView1 = vi.inflate(R.layout.item_row, parent,false);
        holder.imageView = (ImageView) convertView1.findViewById(R.id.rowIcon);
        holder.textView = (TextView) convertView1.findViewById(R.id.rowText);
        convertView1.setTag(holder);
    } else {
        holder = (Holder) convertView1.getTag();
    }
    NavItem item = values[position];

    holder.imageView.setImageResource(item.icon);
    holder.textView.setText(item.name);

    return convertView1;
}

private class Holder {
    public TextView textView;
    public ImageView imageView;
}
}

custom listview layout

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="wrap_content"
android:layout_width="fill_parent"
android:background="?android:attr/activatedBackgroundIndicator"
android:minHeight="?android:attr/listPreferredItemHeightSmall"
android:padding ="10dp">

<ImageView
    android:id="@+id/rowIcon"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true"
    android:layout_alignParentTop="true"
    android:src="@drawable/ic_action_settings"
    android:paddingRight="10dp"/>

<TextView
    android:id="@+id/rowText"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_centerVertical="true"
    android:layout_toRightOf="@+id/rowIcon"
    android:paddingRight="10dp"
    android:textAppearance="?android:attr/textAppearanceListItemSmall"/>

Main activity

NavItem settings = new NavItem();
settings.icon = R.drawable.ic_action_settings;
settings.name = "Settings";

NavItem send = new NavItem(R.drawable.ic_action_settings,"Sent");

NavItem[] values = new NavItem[]{
                settings,send
};

NavigationAdapter adapter = new NavigationAdapter(this, R.layout.item_row, values);
mDrawerListView.setAdapter(adapter);

When I open the drawer it just shows a blank page. If I change the adapter to ArrayAdapter of string and inflate the built in layout then it works, but I want to add image next to the text.

score 0 · Accepted Answer · answered Mar 27 '15 at 04:43

I have faced similar problem in my experience.

I solved this problem by changing :

public class NavigationAdapter extends ArrayAdapter<NavItem> {

}

to :

public class NavigationAdapter extends BaseAdapter<NavItem> {

}

I have extended my custom adapter from BaseAdapter class which have worked for my case. Please try this if it works for you also

Navigation Drawer does not recognize custom adapter layout

1 Answers1