CODEWITHSUNDEEP
androidlistviewandroid-listviewandroid-linearlayout
Pawan Rawat
Pawan Rawat

Reputation: 525

adding a linear layout defined in xml at the footer of listview

i am trying to add a linear layout defined in xml at the footer of a listview. i tried the below code

listview.addFooter(findViewById(R.id.my_linearlayout))

but it is throwing an error

java.lang.NullPointerException: Attempt to invoke virtual method 'android.view.ViewGroup$LayoutParams android.view.View.getLayoutParams()' on a null object reference

if i just remove the addFooter code the acitvity runs smoothly.can one please suggest what is issue or if it is the right way to add the linearlayout at the footer of listview dynamically. thanks in advance.

Upvotes: 0

Views: 272

Answers (3)

Garima Mathur
Garima Mathur

Reputation: 3352

You have to do this in way

View footerView = ((LayoutInflater) ActivityContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.list_footer_layout, null, false);
ListView.addFooterView(footerView);

here list_footer_layout name of xml file into in layout folder.

Layout for footer like this

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:paddingTop="7dip"
    android:paddingBottom="7dip"
    android:orientation="horizontal"
    android:gravity="center">

    <LinearLayout 
        android:id="@+id/list_footer_layout" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content"
        android:orientation="horizontal"
        android:gravity="center"
        android:layout_gravity="center">

    <TextView 
        android:text="@string/footer_text_1" 
        android:id="@+id/footer_1" 
        android:layout_width="wrap_content" 
        android:layout_height="wrap_content" 
        android:textSize="14dip" 
        android:textStyle="bold" 
        android:layout_marginRight="5dip" />
    </LinearLayout>
</LinearLayout>

Activity class could be

public class MyListActivty extends ListActivity {
    private Context context = null;
    private ListView list = null;

    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        list = (ListView)findViewById(android.R.id.list);

        //code to set adapter to populate list
        View footerView =  ((LayoutInflater)context.getSystemService(Context.LAYOUT_INFLATER_SERVICE)).inflate(R.layout.list_footer_layout, null, false);
        list.addFooterView(footerView);
    }
}

Upvotes: 0

Ga&#235;tan
Ga&#235;tan

Reputation: 12552

You have to do it this way:

LinearLayout linearLayout = LayoutInflater.from(context).inflate(R.layout.your_layout, listview, false);
listview.addFooter(linearLayout);

Upvotes: 0

Shin-chan
Shin-chan

Reputation: 899

View footerView = getLayoutInflater().inflate(R.layout.my_linearlayout, null); listview.addFooterView(footerView);

You should add my_linearlayout to your /res/layout/ folder.

Upvotes: 2

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