Android TwoLineListItem控制項

Android TwoLineListItem繼承android.widget.RelativeLayout.由兩個子視圖組合而成，通常用在ListView中。

它需要兩個TextView（ID值為text1，text2），還有一個可選的第三個VIew(ID值為selectedIcon)。

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<?xml version="1.0" encoding="utf-8"?><TwoLineListItem xmlns:android="http://schemas.android.com/apk/res/android"    android:layout_width="fill_parent"    android:layout_height="wrap_content">    <ImageView        android:id="@+id/icon"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:src="@android:drawable/presence_offline" />    <TextView        android:id="@android:id/text1"        android:layout_marginTop="1dip"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_toRightOf="@id/icon"        android:textSize="15dip"        android:text="ssssssssssssssssssssssss"        android:textStyle="bold" />    <TextView        android:id="@android:id/text2"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_below="@android:id/text1"        android:layout_alignLeft="@android:id/text1"        android:paddingBottom="4dip"        android:includeFontPadding="false"        android:textSize="15dip"        android:text=""        android:textStyle="normal" />    <ImageView        android:id="@android:id/selectedIcon"        android:layout_marginTop="9dip"        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:layout_alignParentRight="true"        android:layout_marginRight="7dip"        android:src="@android:drawable/sym_action_call" /></TwoLineListItem>

效果：

源碼：

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import java.util.ArrayList;import java.util.List;import android.app.ListActivity;import android.os.Bundle; public class TwoLineItemActivity extends ListActivity {         @Override    public void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setListAdapter(new ContactArrayAdapter(this, R.layout.main,                getContacts()));    }     private List<contacts> getContacts() {        List<contacts> contacts = new ArrayList<contacts>();        Contacts c;        c = new Contacts();        c.setName("Shriram");        c.setPhone("123456");         contacts.add(c);         c = new Contacts();        c.setName("John");        c.setPhone("456789");        contacts.add(c);        return contacts;    }}</contacts></contacts></contacts>

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import java.util.List;import android.content.Context;import android.view.LayoutInflater;import android.view.View;import android.view.ViewGroup;import android.widget.ArrayAdapter;import android.widget.TwoLineListItem; public class ContactArrayAdapter extends ArrayAdapter<contacts> {         private int resourceId;     public ContactArrayAdapter(Context context, int textViewResourceId,            List<contacts> object) {        super(context, textViewResourceId, object);        resourceId = textViewResourceId;        // TODO Auto-generated constructor stub    }     @Override    public View getView(int position, View convertView, ViewGroup parent) {        Contacts contacts = getItem(position);        if (contacts == null) {            return null;        }        // 得到一個LayoutInflater執行個體        LayoutInflater inflater = (LayoutInflater) getContext()                .getSystemService(Context.LAYOUT_INFLATER_SERVICE);        TwoLineListItem view;        if (convertView == null) {            view = (TwoLineListItem) inflater                    .inflate(resourceId, parent, false);// 由xml產生View        } else {            view = (TwoLineListItem) convertView;        }        if (view.getText1() != null) {            view.getText1().setText(contacts.getName());        }        if (view.getText2() != null) {            view.getText2().setText(contacts.getPhone());        }        return view;    }}</contacts></contacts>