5.乐学成语-----------显示动物类成语列表

1.在layout下新建activity_animal.xml文件，代码如下：

<?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:background="@drawable/bg_animal"
android:orientation="vertical" >
<ListView
android:id="@+id/lvAnimalList"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layoutAnimation="@anim/anim_layout_listview"
android:listSelector="#00000000">
</ListView>
</LinearLayout>2.在layout目录下新建animal_item.xml，代码如下：
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:padding="10dp">
<TextView
android:id="@+id/tvName"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:gravity="center"
android:text="助人为乐"
android:textAppearance="?android:attr/textAppearanceLarge"/>

<ImageButton
android:id="@+id/btnSave"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@null"
android:layout_alignParentRight="true"
android:layout_alignTop="@+id/tvName"
android:src="@drawable/btnsave"/>
</RelativeLayout>3.新建类AnimalAdapter，代码如下：
public class AnimalAdapter extends ArrayAdapter<Animal>{
private int resourceld;
private Context context;
public AnimalAdapter(Context context, int resource,List<Animal>objects) {
super(context, resource,objects);
this.context=context;
resourceld = resource;
// TODO Auto-generated constructor stub
}
public View getView(int position,View convertView,ViewGroup parent){
final Animal animal=getItem(position);//获取当前项的Animal实例
View view;
ViewHolder viewHolder;
if(convertView ==null){
view=LayoutInflater.from(getContext()).inflate(resourceld, null);
viewHolder=new ViewHolder();
viewHolder.tvName=(TextView)view.findViewById(R.id.tvName);
viewHolder.btnSave=(ImageButton)view.findViewById(R.id.btnSave);
viewHolder.btnSave.setFocusable(false);
viewHolder.btnSave.setFocusableInTouchMode(false);
viewHolder.btnSave.setOnClickListener(new OnClickListener(){
public void onClick(View view){
Toast.makeText(context, "你要收藏"+animal.getName()+"吗",Toast.LENGTH_SHORT ).show();
}
});
view.setTag(viewHolder);
}else{
view=convertView;
viewHolder=(ViewHolder)view.getTag();
}
viewHolder.tvName.setText(animal.getName());

return view;

}
class ViewHolder{
TextView tvName;
ImageButton btnSave;
}
}

结果图如下：