普通的listview適配器

優化：
1：listview寬高定值活充滿
2：複用convertview
3：使用內部類，避免重複找ID

適配器

public class MyAdapter extends BaseAdapter {
    private List<Student> datas;
    private LayoutInflater inflater;
    public MyAdapter(Context context,List<Student> datas) {
        this.datas = datas;
        inflater = LayoutInflater.from(context);
    }

    @Override
    public int getCount() {
        return datas == null ? 0 : datas.size();
    }

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

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

    @Override
    public View getView(final int position, View convertView, ViewGroup parent) {
        ViewHolder viewHolder;
        if (convertView == null){
            convertView = inflater.inflate(R.layout.lv_item,parent,false);
            viewHolder = new ViewHolder(convertView);
            convertView.setTag(viewHolder);
            //對於listview，注意添加這一行，即可在item上使用高度
            AutoUtils.autoSize(convertView);
        }else {
            viewHolder = (ViewHolder) convertView.getTag();
        }
        Student student = datas.get(position);
        viewHolder.getTv1().setText(student.getName());
        viewHolder.getTv2().setText(student.getNum());
        viewHolder.getRlItem().setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                if (null != onItemClickListener){
                    onItemClickListener.onItemClickListener(position);
                }
            }
        });
        return convertView;
    }

    public class ViewHolder{
        private TextView tv1;
        private TextView tv2;
        private RelativeLayout rlItem;
        private View root;

        public ViewHolder(View root) {
            this.root = root;
        }
        public RelativeLayout getRlItem(){
            if (rlItem == null && root != null){
                rlItem = (RelativeLayout) root.findViewById(R.id.item_rl);
            }
            return rlItem;
        }
        public TextView getTv1(){
            if (tv1 == null && root != null){
                tv1 = (TextView) root.findViewById(R.id.item_name);
            }
            return tv1;
        }
        public TextView getTv2(){
            if (tv2 == null && root != null){
                tv2 = (TextView) root.findViewById(R.id.item_num);
            }
            return tv2;
        }
    }

    private OnItemClickListener onItemClickListener;
    public void setOnItemClickListener(OnItemClickListener onItemClickListener){
        this.onItemClickListener = onItemClickListener;
    }
    public interface OnItemClickListener{
        public void onItemClickListener(int position);
    }
}

單行佈局：

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
    android:id="@+id/item_rl"
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="108px"
    android:background="#ffffff">
    <TextView
        android:id="@+id/item_name"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_marginTop="24px"
        android:layout_marginLeft="22px"
        android:textSize="28px"
        android:textColor="#333"
        android:text="張林周 - ZHANGLINZHOU"/>
    <TextView
        android:id="@+id/item_num"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentBottom="true"
        android:layout_marginLeft="22px"
        android:layout_marginBottom="16px"
        android:textColor="#999"
        android:textSize="26px"
        android:text="身份證：3729231991999999999999"/>
</RelativeLayout>

使用：

    <ListView
        android:id="@+id/lv"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_marginTop="26px">
    </ListView>

        mLV = ((ListView) findViewById(R.id.lv));
        mList = new ArrayList<>();
        mAdapter = new MyAdapter(this, mList);
        mLV.setAdapter(mAdapter);

        mAdapter.setOnItemClickListener(new MyAdapter.OnItemClickListener() {
            @Override
            public void onItemClickListener(int position) {
                Toast.makeText(MainActivity.this, "點擊了：" + position, Toast.LENGTH_SHORT).show();
            }
        });

更新數據

    private void initData() {
        for (int i = 0; i < 5; i++) {
            final Student s = new Student(i,"張林周 - ZHANGLINZHOU" + i, "身份證 ：3729231999999999999999" + i);
            mList.add(s);
            new Thread(){
                @Override
                public void run() {
                    super.run();
                    DBUtils.getInstance().saveStudent(s);
                }
            };
        }
        mAdapter.notifyDataSetChanged();
    }