ListView和BaseAdapter

参考资料：http://www.runoob.com/w3cnote/android-tutorial-listview.html

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context="com.expample.myapplication.MainActivity">

    <TextView
        android:layout_width="match_parent"
        android:layout_height="50dp"
        android:id="@+id/mainView_id"/>

    <TextView
        android:layout_width="match_parent"
        android:layout_height="30dp"
        android:id="@+id/subView_id"/>
    <TextView
        android:layout_width="match_parent"
        android:layout_height="5dp"
        android:background="#000000"/>

</LinearLayout>

public class MainActivity extends Activity {
    ListView lv;
    List ls;
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        lv = (ListView)findViewById(R.id.listView_id);
        ls = new LinkedList<animals>();
        ls.add(new animals("猪说", "我是猪吗？"));
        ls.add(new animals("猫说", "我是猫吗？"));
        ls.add(new animals("狗说", "我是狗吗？"));
        ls.add(new animals("熊说", "我是熊吗？"));
        ls.add(new animals("兔说", "我是兔吗？"));
        ls.add(new animals("虎说", "我是虎吗？"));
        ls.add(new animals("鼠说", "我是鼠吗？"));
        ls.add(new animals("鸡说", "我是鸡吗？"));
        ls.add(new animals("鱼说", "我是鱼吗？"));
        MyAdapter adapter = new MyAdapter((LinkedList<animals>)ls, MainActivity.this);

        lv.setAdapter(adapter);
    }

    class animals{
        String main;
        String sub;

        animals(String main, String sub){
            this.main = main;
            this.sub = sub;
        }

        String getMain(){
            return main;
        }

        String getSub(){
            return sub;
        }
    }
    class MyAdapter extends BaseAdapter{
        LinkedList<animals> mdata;
        Context mcontext;
        MyAdapter(LinkedList<animals> data, Context context){
            this.mdata = data;
            this.mcontext = context;
        }
        @Override
        public int getCount() {
            return mdata.size();
        }

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

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

        @Override
        public View getView(int position, View convertView, ViewGroup parent) {
            TextView main;
            TextView sub;

            LayoutInflater layoutInflater = LayoutInflater.from(mcontext);
            convertView = layoutInflater.inflate(R.layout.item_list_animal, null, false);
            main = (TextView) convertView.findViewById(R.id.mainView_id);
            sub = (TextView)convertView.findViewById(R.id.subView_id);

            main.setText(mdata.get(position).getMain());
            sub.setText(mdata.get(position).getSub());
            return convertView;
        }
    }
}