An example of ListView group layout Improvement implemented by Android _android

An example of this article is about the improved method of ListView packet layout implemented by Android. Share to everyone for your reference, specific as follows:

Because it is reproduced on the Internet an article, here is not much nonsense, first look at the final effect of the picture:

The main code to implement the ListView layout is then:

1, the program main interface Separatelistview.java

Package Whu.iss.wuxianglong;
Import java.util.ArrayList;
Import java.util.List;
Import android.app.Activity;
Import Android.content.Context;
Import Android.os.Bundle;
Import Android.view.LayoutInflater;
Import Android.view.View;
Import Android.view.ViewGroup;
Import Android.widget.ArrayAdapter;
Import Android.widget.ListView;
Import Android.widget.TextView;
  public class Separatelistview extends activity {ListView ListView;
  Myadapter Myadapter;
  Public list<string> Listtag = new arraylist<string> (); /** called the activity is a.
    * * @Override public void onCreate (Bundle savedinstancestate) {super.oncreate (savedinstancestate);
    Setcontentview (R.layout.main);
    ListView = (ListView) Findviewbyid (r.id.list); Myadapter = new Myadapter (this, Android.
    R.layout.simple_expandable_list_item_1, GetData ());
  Listview.setadapter (Myadapter); Private List<string> GetData () {list<string> data = new ARRAYLIST&LT;STRIng> ();
    int i = 0;
    Data.add ("A");
    Listtag.add ("A");
    Data.add ("AA test Data" + (i++));
    Data.add ("A Trial data" + (i++));
    Data.add ("AA test Data" + (i++));
    Listtag.add ("B");
    Data.add ("B");
    Data.add ("BB test Data" + (i++));
    Data.add ("B Test Data" + (i++));
    Data.add ("B Test Data" + (i++));
    Data.add ("B Test Data" + (i++));
    Listtag.add ("C");
    Data.add ("C");
    Data.add ("C Test Data" + (i++));
    Data.add ("C Test Data" + (i++));
    Listtag.add ("D");
    Data.add ("D");
    Data.add ("D Test Data" + (i++));
    Data.add ("D Test Data" + (i++));
    Data.add ("D Test Data" + (i++));
    Listtag.add ("E");
    Data.add ("E");
    Data.add ("E Test Data" + (i++));
    Data.add ("E Test Data" + (i++));
    Data.add ("E Test Data" + (i++));
    Listtag.add ("F");
    Data.add ("F");
    Data.add ("F Test Data" + (i++));
  return data;
        Class Myadapter extends Arrayadapter<string> {public Myadapter-context, int textviewresourceid,
    List<string> objects) {Super (context, Textviewresourceid, objects);
  }  @Override public boolean areallitemsenabled () {return false; @Override public boolean isenabled (int position) {//If-begins, the entry is not optional return!listtag.contains (GetItem (
    position)); 
     @Override public View getview (int position, view Convertview, ViewGroup parent) {View view = Convertview; A layout template that does not load according to the label type if (Listtag.contains (GetItem (position)) {//If it is a label item view = Layoutinflater.from
      (GetContext ()). Inflate (R.layout.group_list_item_tag, NULL);
      }else{//Otherwise is the data item view = Layoutinflater.from (GetContext ()). Inflate (R.layout.group_list_item, NULL);
      }//Display name TextView TextView = (TextView) View.findviewbyid (R.id.group_list_item_text);
     Textview.settext (GetItem (position));
    Returns the overridden view return view;

 }
  }
}

2, the program main interface layout file Main.xml

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android=
"http://schemas.android.com/apk/" Res/android "
  android:orientation=" vertical "
  android:layout_width=" fill_parent "
  android:layout_" height= "Fill_parent"
  >
  <listview
    android:id= "@+id/list" android:layout_width= "Fill_"
    Parent "
    android:layout_height=" wrap_content ">
  </ListView>
</LinearLayout>

3, ListView data section style layout file Group_list_item.xml

<?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= "Wrap_content"
  android:padding= "5dip" >
  <imageview
    android:src= "@drawable/icon"
    Android:layout_width= "50px"
    android:layout_height= "50px" >
  </ImageView>
  <textview
    android:id= "@+id/group_list_item_text"
    android:layout_width= "wrap_content"
    android:layout_ height= "Fill_parent"
    android:paddingleft= "5dip"
    android:gravity= "center_vertical" >
  </ Textview>
</LinearLayout>

4. Style layout file for the group flag row in ListView Group_list_item_tag.xml

<?xml version= "1.0" encoding= "Utf-8"?> <linearlayout xmlns:android=
"http://schemas.android.com/apk/" Res/android "
  android:layout_width=" fill_parent "
  android:layout_height=" Wrap_content "
  android: Background= "#555555"
  android:paddingleft= "10dip" >
  <textview
    android:id= "@+id/group_list_item _text "
    android:layout_width=" wrap_content "
    android:layout_height=" 20dip "
    android:textcolor=" # FFFFFF "
    android:gravity=" center_vertical ">
  </TextView>
</LinearLayout>

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I hope this article will help you with the Android program.