CODEWITHSUNDEEP
androidandroid-layoutandroid-listviewandroid-xml
user5495265
user5495265

Reputation: 183

Populate a LinearLayout?

The problem I have with ListView is that only the ListView is scrollable and not the whole screen.

For example, if I have a layout like the one below, only the ListView part of the screen is scrollable, whereas I want the whole screen to scroll:

<LinearLayout
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_below="@+id/toolbar"
    android:paddingLeft="24dp"
    android:paddingRight="24dp"
    android:paddingTop="24dp"
    android:paddingBottom="24dp"
    android:orientation="vertical">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Hello, World!"
            />

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Lorem ipsum."
            />

        <ListView
            android:id="@+id/listview"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            />

</LinearLayout>

Is it possible to populate a LinearLayout, like the one above, in order to make the whole screen scrollable?

Upvotes: 0

Views: 932

Answers (3)

Sebastian Pakieła
Sebastian Pakieła

Reputation: 3029

Yes it is possible. Easy way - Wrap everything in ScrollView its ugly, not recommended but could work.

Much better way - ListView has addHeaderView(View v) and addFooterView(View v) If you want to have something above use header and if you want something below just use footer. In your case take these two TextViews to new layout file. Inflate it like here

LayoutInflater.from(context).inflate(R.layout.new_created_layout_with_these_two_text_views,null)

and add created view as header.

Upvotes: 1

aeskreis
aeskreis

Reputation: 1973

There are two issues with what you are trying to do

1) You cannot scroll a LinearLayout. In order to scroll a LinearLayout, you must insert a ScrollView as its first and only child, then put all your child views inside the ScrollView

2) What you are trying to do will not work. ScrollView and ListView are just a window into the content. The actual ListView itself is only as large as the space it occupies on screen, rather than the size of the content contained within it. If you want the content of the ListView and the TextView's to scroll together, you should either add the TextView's into the ListView, or add a wrapping view as the ListView's header view. Your other option is to not use a ListView at all, and just append all children to your ScrollView programatically.

Note: You should not use a ScrollView AND a ListView. Pick one approach and stick to it.

Upvotes: 0

kandroidj
kandroidj

Reputation: 13932

There is an easier way to handle this, ListView provides a addHeaderView(View) method so you can do this:

Create a header_layout.xml:

    <?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="vertical">

         <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Hello, World!"/>

         <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:text="Lorem ipsum."/>
     </LinearLayout>

then have your main_activity.xml

     <?xml version="1.0" encoding="utf-8"?>
     <FrameLayout
         android:layout_width="match_parent"
         android:layout_height="match_parent"
         android:layout_below="@+id/toolbar"
         android:paddingLeft="24dp"
         android:paddingRight="24dp"
         android:paddingTop="24dp"
         android:paddingBottom="24dp"> 
       <ListView
            android:id="@+id/listview"
            android:layout_width="match_parent"
            android:layout_height="match_parent" />
     </FrameLayout>

Then in your MainActivity.java

     public class MainActivity extends Activity{

            @Override
            protected void onCreate(Bundle savedInstanceState) {
                super.onCreate(savedInstanceState);
                setContentView(R.layout.main_activity);

                // reference your list
                ListView listView = (ListView) findViewById(R.id.listview);
                // Inflate the header and add the view
                View headerView = LayoutInflater.from(MainActivity.this).inflate(R.layout.header_view, null);
                listView.addHeaderView(headerView);

            }
     }

see http://developer.android.com/reference/android/widget/ListView.html#addHeaderView(android.view.View)

Upvotes: 1

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