Question

I am trying to write a very simple app that displays the name of every installed app on the device in a listview. I am using Google’s ListView tutorial as a base.

Here is my code:

@Override
    public void onCreate(Bundle savedInstanceState)
    {
        super.onCreate(savedInstanceState);

        final PackageManager pm = this.getPackageManager();

        Intent intent = new Intent(Intent.ACTION_MAIN, null);
        intent.addCategory(Intent.CATEGORY_LAUNCHER);

        final ArrayList<ResolveInfo> list =
                (ArrayList<ResolveInfo>) pm.queryIntentActivities(intent, 
                        PackageManager.PERMISSION_GRANTED);
        for (ResolveInfo rInfo : list)
        {
            Log.i(TAG, ": Installed Applications " + rInfo.activityInfo.
                    applicationInfo.loadLabel(pm).toString());
        }

        final ArrayAdapter<ResolveInfo> adapter = 
            new ArrayAdapter<ResolveInfo>(this, R.layout.list_item, list)
            {
            @Override
            public View getView(int position, View convertView, ViewGroup parent)
            {
                if (convertView == null)
                    convertView = LayoutInflater.from(parent.getContext()).
                        inflate(R.layout.list_item, parent, false);

                final String text = list.get(position).activityInfo.
                    applicationInfo.loadLabel(pm).toString();
                ((TextView)convertView.findViewById(R.id.text)).setText(text);

                final Drawable drawable = list.get(position).activityInfo.applicationInfo.loadIcon(pm);
                ((ImageView)convertView.findViewById(R.id.image)).setImageDrawable(drawable);

                return convertView;
            }

            };
        setListAdapter(adapter);

        ListView lv = getListView();
        lv.setTextFilterEnabled(true);
        lv.setOnItemClickListener(new OnItemClickListener() {
            public void onItemClick(AdapterView<?> parent, View view,
                int position, long id) {

                // On Item Click Activity
                // This is where I want to send the Package Name of the app selected to be passed to a method.


            }
          });
    }




 <?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal" android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <ImageView android:id="@+id/image" 
        android:layout_width="50dp" android:layout_height="50dp" />
    <TextView android:id="@+id/text"
        android:layout_width="fill_parent" android:layout_height="wrap_content"
        android:padding="10dp" android:textSize="16sp" />
</LinearLayout>   

UPDATE: I now need to use an OnItemClickListener to pass the Package Name of the App selected to a method.

Answer 1

To display your activities’ names correctly in the list, you should override the getView method of your ListAdapter, and set some of your local variables as final (to work with inner class):

@Override
public void onCreate(Bundle savedInstanceState)
{
    super.onCreate(savedInstanceState);

    final PackageManager pm = this.getPackageManager();

    Intent intent = new Intent(Intent.ACTION_MAIN, null);
    intent.addCategory(Intent.CATEGORY_LAUNCHER);

    final ArrayList<ResolveInfo> list =
            (ArrayList<ResolveInfo>) pm.queryIntentActivities(intent, 
                    PackageManager.PERMISSION_GRANTED);
    for (ResolveInfo rInfo : list)
    {
        Log.i(TAG, ": Installed Applications " + rInfo.activityInfo.
                applicationInfo.loadLabel(pm).toString());
    }

    final ArrayAdapter<ResolveInfo> adapter = 
        new ArrayAdapter<ResolveInfo>(this, R.layout.list_item, list)
        {
            @Override
            public View getView(int position, View convertView, ViewGroup parent)
            {
                convertView = super.getView(position, convertView, parent);
                final String text = list.get(position).activityInfo.
                    applicationInfo.loadLabel(pm).toString();
                ((TextView)convertView).setText(text);
                return convertView;
            }
        };
    setListAdapter(adapter);

    ListView lv = getListView();
    lv.setTextFilterEnabled(true);
}

This way you have your custom ArrayAdapter implementation, which displays the proper label of applicationinfo in the TextView.

You can also achieve this, if you create a new ArrayList<String>, and populate it inside the for cycle where you log the applications:

final ArrayList<String> labelList = new ArrayList<String>();
for (ResolveInfo rInfo : list)
{
    Log.i(TAG, ": Installed Applications " + rInfo.activityInfo.
            applicationInfo.loadLabel(pm).toString());
    labelList.add(rInfo.activityInfo.
            applicationInfo.loadLabel(pm).toString());
}

final ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, 
        R.layout.list_item, labelList);
setListAdapter(adapter);

Then you use this new labelList as the source of your adapter.

Update
To include the icon into the item renderers, the overridden getView method would look like:

@Override
public View getView(int position, View convertView, ViewGroup parent)
{
    if (convertView == null)
        convertView = LayoutInflater.from(parent.getContext()).
            inflate(R.layout.list_item, parent, false);

    final String text = list.get(position).activityInfo.
        applicationInfo.loadLabel(pm).toString();
    ((TextView)convertView.findViewById(R.id.text)).setText(text);

    final Drawable drawable = list.get(position).activityInfo.applicationInfo.loadIcon(pm);
    ((ImageView)convertView.findViewById(R.id.image)).setImageDrawable(drawable);

    return convertView;
}

and your res/layout/list_item.xml layout file has to contain the text TextView and the image ImageView:

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="horizontal" android:layout_width="fill_parent"
    android:layout_height="fill_parent">
    <ImageView android:id="@+id/image" 
        android:layout_width="50dp" android:layout_height="50dp" />
    <TextView android:id="@+id/text"
        android:layout_width="fill_parent" android:layout_height="wrap_content"
        android:padding="10dp" android:textSize="16sp" />
</LinearLayout>