How to use addHeaderView to add a simple ImageView to a ListView
Solution 1
Old question, but I just copied it and run it and indeed the red doesn't show up.
You're missing one simple thing: Regardless of how you call inflate
you always1 have to pass a parent view (second param) so that it can figure out which LayoutParams
subclass to instantiate.
1: there are always1 exceptions
.inflate(R.layout.header, lv, false)
For more on the subject I highly suggest: http://www.doubleencore.com/2013/05/layout-inflation-as-intended/ (worth reading even a few times)
Your full code modified (xml files can stay as is):
public class MainActivity extends Activity {
private static final String[] ADAPTER_DATA = {
"Afghanistan", "Albania", "Algeria", "American Samoa", "Andorra", "Angola"
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ListView list = (ListView) findViewById(R.id.list);
View header = getLayoutInflater().inflate(R.layout.header, list, false);
list.addHeaderView(header, null, false);
list.setAdapter(new ArrayAdapter<String>(this, R.layout.list_item, ADAPTER_DATA));
}
}
Solution 2
This is how I add a header:
View view = View.inflate(context, R.layout.header, null);
lv = (ListView) findViewById(R.id.list);
lv.addHeaderView(view);
Solution 3
Check this, I have get it working right now:
ListView lv = (ListView)findViewById(R.id.list);
LayoutInflater layoutInflater = this.getLayoutInflater();
View headerView = (View) layoutInflater.inflate(R.layout.header, lv, false);
Just send listview to the second param of the inflate method :)
Solution 4
You should declare the header view in a separated xml file. Then, inflate it in to a View instance and set it to ListView.
View view = ... (inflate the view from xml file)
listview.addHeaderView(view)
You must call addHeaderView before setAdapter to the listview.
user1764413
Updated on April 17, 2020Comments
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user1764413 about 4 years
My target is simple. I want to add a "Red Rectangle" as a headerview to a
ListView
. so I create a simple activitypublic class MainActivity extends Activity { private String[] adapterData = new String[] { "Afghanistan", "Albania", "Algeria", "American Samoa", "Andorra", "Angola"}; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); ListView lv; lv = (ListView)findViewById(R.id.list); LayoutInflater lf; View headerView; lf = this.getLayoutInflater(); headerView = (View)lf.inflate(R.layout.header, null, false); lv.addHeaderView(headerView, null, false); lv.setAdapter(new ArrayAdapter<String>(this, R.layout.list_item, adapterData)); } }
activity_main.xml
<ListView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@+id/list" android:layout_width="match_parent" android:layout_height="match_parent" android:background="#FF0" android:cacheColorHint="#0000" android:paddingLeft="20dip" android:paddingRight="20dip" android:divider="#0000" android:scrollbarStyle="outsideOverlay" />
list_item.xml
<TextView xmlns:android="http://schemas.android.com/apk/res/android" android:id="@android:id/text1" android:layout_width="match_parent" android:layout_height="0dip" android:minHeight="40dip" android:singleLine="true" android:textAppearance="?android:attr/textAppearanceLarge" android:gravity="center_vertical" />
most important, header.xml
<?xml version="1.0" encoding="utf-8"?> <ImageView xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="100dip" android:background="#F00"/>
But it doesn't seem to work. Nothing is displayed.
Can any give some suggestions on this? Your help is highly appreciated.
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Sadegh over 8 yearsHere is the solution -- > stackoverflow.com/a/34557372/542532
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user1764413 over 11 yearsI think the "inflate" action is equivalent, thanks very much, but it didn't help.
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user1764413 over 11 yearsyes, just as the code I post, I declare header.xml as a seperated xml file. and I call addHeaderView before setAdapter to the listview.
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Nguyen Minh Binh over 11 yearsLet take a look at samcoles.co.uk/mobile/…. Hope this helps.
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Mahdi over 9 years@laura how can get onClick on header items?
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Recomer about 8 yearsThank you this solved my issue! The problem in my case was just the missign "false" parameter in View header = getLayoutInflater().inflate(R.layout.header, list, false); !
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TechAurelian about 4 yearsThe inflated header view may be bare-bone, how can I add values to the sub-views in the layout (such as texts, etc.) at runtime?