How to customize listview using baseadapter

问题:

I wanna create a customized ListView like this:

I think that I have to use BaseAdapter but I have no idea about it.

回答1:

main.xml:

<RelativeLayout xmlns:android=\"http://schemas.android.com/apk/res/android\"
    xmlns:tools=\"http://schemas.android.com/tools\"
    android:layout_width=\"match_parent\"
    android:layout_height=\"match_parent\"
    android:paddingBottom=\"@dimen/activity_vertical_margin\"
    android:paddingLeft=\"@dimen/activity_horizontal_margin\"
    android:paddingRight=\"@dimen/activity_horizontal_margin\"
    android:paddingTop=\"@dimen/activity_vertical_margin\"
    tools:context=\".MainActivity\" >

    <ListView
        android:id=\"@+id/list\"
        android:layout_width=\"match_parent\"
        android:layout_height=\"wrap_content\"
        android:layout_alignParentLeft=\"true\"
        android:layout_alignParentTop=\"true\" >

    </ListView>

</RelativeLayout>

custom.xml:

<?xml version=\"1.0\" encoding=\"utf-8\"?>
<LinearLayout xmlns:android=\"http://schemas.android.com/apk/res/android\"
    android:layout_width=\"match_parent\"
    android:layout_height=\"match_parent\"
    android:orientation=\"vertical\" >

    <LinearLayout
        android:layout_width=\"match_parent\"
        android:layout_height=\"wrap_content\" >

        <LinearLayout
            android:layout_width=\"255dp\"
            android:layout_height=\"wrap_content\"
            android:orientation=\"vertical\" >

            <LinearLayout
                android:layout_width=\"match_parent\"
                android:layout_height=\"wrap_content\"
                android:orientation=\"vertical\" >

                <TextView
                    android:id=\"@+id/title\"
                    android:layout_width=\"wrap_content\"
                    android:layout_height=\"wrap_content\"
                    android:text=\"Video1\"
                    android:textAppearance=\"?android:attr/textAppearanceLarge\"
                    android:textColor=\"#339966\"
                    android:textStyle=\"bold\" />
            </LinearLayout>

            <LinearLayout
                android:layout_width=\"match_parent\"
                android:layout_height=\"wrap_content\"
                android:orientation=\"vertical\" >

                <TextView
                    android:id=\"@+id/detail\"
                    android:layout_width=\"wrap_content\"
                    android:layout_height=\"wrap_content\"
                    android:text=\"video1\"
                    android:textColor=\"#606060\" />
            </LinearLayout>
        </LinearLayout>

        <ImageView
            android:id=\"@+id/img\"
            android:layout_width=\"wrap_content\"
            android:layout_height=\"wrap_content\"
            android:src=\"@drawable/ic_launcher\" />

    </LinearLayout>

</LinearLayout>

main.java:

package com.example.sample;

import android.app.Activity;
import android.os.Bundle;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.BaseAdapter;
import android.widget.ImageView;
import android.widget.ListView;
import android.widget.TextView;


public class MainActivity extends Activity {

    ListView l1;
    String[] t1={\"video1\",\"video2\"};
    String[] d1={\"lesson1\",\"lesson2\"};
    int[] i1 ={R.drawable.ic_launcher,R.drawable.ic_launcher};


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        l1=(ListView)findViewById(R.id.list);
        l1.setAdapter(new dataListAdapter(t1,d1,i1));
    }

    class dataListAdapter extends BaseAdapter {
        String[] Title, Detail;
        int[] imge;

        dataListAdapter() {
            Title = null;
            Detail = null;
            imge=null;
        }

        public dataListAdapter(String[] text, String[] text1,int[] text3) {
            Title = text;
            Detail = text1;
            imge = text3;

        }

        public int getCount() {
            // TODO Auto-generated method stub
            return Title.length;
        }

        public Object getItem(int arg0) {
            // TODO Auto-generated method stub
            return null;
        }

        public long getItemId(int position) {
            // TODO Auto-generated method stub
            return position;
        }

        public View getView(int position, View convertView, ViewGroup parent) {

            LayoutInflater inflater = getLayoutInflater();
            View row;
            row = inflater.inflate(R.layout.custom, parent, false);
            TextView title, detail;
            ImageView i1;
            title = (TextView) row.findViewById(R.id.title);
            detail = (TextView) row.findViewById(R.id.detail);
            i1=(ImageView)row.findViewById(R.id.img);
            title.setText(Title[position]);
            detail.setText(Detail[position]);
            i1.setImageResource(imge[position]);

            return (row);
        }
    }
}

Try this.

回答2:

public class ListElementAdapter extends BaseAdapter{

    String[] data;
    Context context;
    LayoutInflater layoutInflater;


    public ListElementAdapter(String[] data, Context context) {
        super();
        this.data = data;
        this.context = context;
        layoutInflater = LayoutInflater.from(context);
    }

    @Override
    public int getCount() {

        return data.length;
    }

    @Override
    public Object getItem(int position) {

        return null;
    }

    @Override
    public long getItemId(int position) {

        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {


        convertView= layoutInflater.inflate(R.layout.item, null);

        TextView txt=(TextView)convertView.findViewById(R.id.text);

        txt.setText(data[position]);



        return convertView;
    }
}

Just call ListElementAdapter in your Main Activity and set Adapter to ListView.

回答3:

Create your own BaseAdapter class and use it as following.

 public class NotificationScreen extends Activity
{

@Override
protected void onCreate_Impl(Bundle savedInstanceState)
{
    setContentView(R.layout.notification_screen);

    ListView notificationList = (ListView) findViewById(R.id.notification_list);
    NotiFicationListAdapter notiFicationListAdapter = new NotiFicationListAdapter();
    notificationList.setAdapter(notiFicationListAdapter);

    homeButton = (Button) findViewById(R.id.home_button);

}

}

Make your own BaseAdapter class and its separate xml file.

public class NotiFicationListAdapter  extends BaseAdapter
{
private ArrayList<HashMap<String, String>> data;
private LayoutInflater inflater=null;


public NotiFicationListAdapter(ArrayList data)
{
this.data=data;        
    inflater =(LayoutInflater)baseActivity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
}



public int getCount() 
{
 return data.size();
}



public Object getItem(int position) 
{
 return position;
}



public long getItemId(int position) 
{
    return position;
}



public View getView(int position, View convertView, ViewGroup parent) 
{
View vi=convertView;
    if(convertView==null)

    vi = inflater.inflate(R.layout.notification_list_item, null);

    ImageView compleatImageView=(ImageView)vi.findViewById(R.id.complet_image);
    TextView name = (TextView)vi.findViewById(R.id.game_name); // name
    TextView email_id = (TextView)vi.findViewById(R.id.e_mail_id); // email ID
    TextView notification_message = (TextView)vi.findViewById(R.id.notification_message); // notification message



    compleatImageView.setBackgroundResource(R.id.address_book);
    name.setText(data.getIndex(position));
    email_id.setText(data.getIndex(position));
    notification_message.setTextdata.getIndex(position));

    return vi;
}

  }

BaseAdapter xml file.

<RelativeLayout xmlns:android=\"http://schemas.android.com/apk/res/android\"
android:id=\"@+id/inner_layout\"
android:layout_width=\"fill_parent\"
android:layout_height=\"wrap_content\"
android:layout_marginBottom=\"5dp\"
android:layout_marginLeft=\"10dp\"
android:layout_weight=\"4\"
android:background=\"@drawable/list_view_frame\"
android:gravity=\"center_vertical\"
android:padding=\"5dp\" >

<TextView
    android:id=\"@+id/game_name\"
    android:layout_width=\"wrap_content\"
    android:layout_height=\"wrap_content\"
    android:text=\"Game name\"
    android:textColor=\"#FFFFFF\"
    android:textSize=\"15dip\"
    android:textStyle=\"bold\"
    android:typeface=\"sans\" />

<TextView
    android:id=\"@+id/e_mail_id\"
    android:layout_width=\"wrap_content\"
    android:layout_height=\"wrap_content\"
    android:layout_below=\"@id/game_name\"
    android:layout_marginTop=\"1dip\"
    android:text=\"E-Mail Id\"
    android:textColor=\"#FFFFFF\"
    android:textSize=\"10dip\" />

<TextView
    android:id=\"@+id/notification_message\"
    android:layout_width=\"wrap_content\"
    android:layout_height=\"wrap_content\"
    android:layout_below=\"@id/game_name\"
    android:layout_toRightOf=\"@id/e_mail_id\"
    android:paddingLeft=\"5dp\"
    android:text=\"Notification message\"
    android:textColor=\"#FFFFFF\"
    android:textSize=\"10dip\" />



<ImageView
    android:id=\"@+id/complet_image\"
    android:layout_width=\"wrap_content\"
    android:layout_height=\"wrap_content\"
    android:layout_alignParentRight=\"true\"
    android:layout_centerVertical=\"true\"
    android:layout_marginBottom=\"30dp\"
    android:layout_marginRight=\"10dp\"
    android:src=\"@drawable/complete_tag\"
    android:visibility=\"invisible\" />

</RelativeLayout>

Change it accordingly and use.

回答4:

I suggest using a custom Adapter, first create a Xml-file, for example layout/customlistview.xml

<?xml version=\"1.0\" encoding=\"utf-8\"?>
<RelativeLayout xmlns:android=\"http://schemas.android.com/apk/res/android\" android:layout_width=\"fill_parent\" android:layout_height=\"wrap_content\" >
    <ImageView
        android:id=\"@+id/image\"
        android:layout_alignParentRight=\"true\"
        android:paddingRight=\"4dp\" />
    <TextView
        android:id=\"@+id/title\"
        android:layout_toLeftOf=\"@id/image\"
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\"
        android:textSize=\"23sp\"
        android:maxLines=\"1\" />
    <TextView
        android:id=\"@+id/subtitle\"
        android:layout_toLeftOf=\"@id/image\" android:layout_below=\"@id/title\"
        android:layout_width=\"wrap_content\"
        android:layout_height=\"wrap_content\" /> 
</RelativeLayout>

Assuming you have a custom class like this

public class CustomClass {

    private long id;
    private String title, subtitle, picture;

    public CustomClass () {
    }

    public CustomClass (long id, String title, String subtitle, String picture) {
        this.id = id;
        this.title= title;
        this.subtitle= subtitle;
        this.picture= picture;
    }
    //add getters and setters
}

And a CustomAdapter.java uses the xml-layout

public class CustomAdapter extends ArrayAdapter {

private Context context;
private int resource;
private LayoutInflater inflater;

public CustomAdapter (Context context, List<CustomClass> values) { // or String[][] or whatever

    super(context, R.layout.customlistviewitem, values);

    this.context = context;
    this.resource = R.layout.customlistview;
    this.inflater = LayoutInflater.from(context);
}

@Override
public View getView(int position, View convertView, ViewGroup parent) {

    convertView = (RelativeLayout) inflater.inflate(resource, null);

    CustomClass item = (CustomClass) getItem(position);

    TextView textviewTitle = (TextView) convertView.findViewById(R.id.title);
    TextView textviewSubtitle = (TextView) convertView.findViewById(R.id.subtitle);
    ImageView imageview = (ImageView) convertView.findViewById(R.id.image);

    //fill the textviews and imageview with the values
    textviewTitle = item.getTtile();
    textviewSubtitle = item.getSubtitle();

    if (item.getAfbeelding() != null) {
        int imageResource = context.getResources().getIdentifier(\"drawable/\" + item.getImage(), null, context.getPackageName());
        Drawable image = context.getResources().getDrawable(imageResource);
    }
    imageview.setImageDrawable(image);

    return convertView;
    }
}

Did you manage to do it? Feel free to ask if you want more info on something :)

EDIT: Changed the adapter to suit a List instead of just a List

回答5:

private class ObjectAdapter extends BaseAdapter {

    private Context context;
    private List<Object>objects;

    public ObjectAdapter(Context context, List<Object> objects) {
        this.context = context;
        this.objects = objects;
    }

    @Override
    public int getCount() {
        return objects.size();
    }

    @Override
    public Object getItem(int position) {
        return objects.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {
        ViewHolder holder;

        if(convertView==null){
            holder = new ViewHolder();
            convertView = LayoutInflater.from(context).inflate(android.R.layout.simple_list_item_1, parent, false);
            holder.text = (TextView) convertView.findViewById(android.R.id.text1);
            convertView.setTag(holder);
        }else{
            holder = (ViewHolder) convertView.getTag();
        }

        holder.text.setText(getItem(position).toString()));
        return convertView;
    }

    class ViewHolder {
        TextView text;
    }
}