Android ListView 自定義適配器

ListView 自定義適配器 網上查了有很多，在此記錄一下。

ListView綁定數據顯示，實現效果如下：

一、定義一個布局文件checkvouch_unverify_item.xml 作為視圖

<?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="60dp"
    android:orientation="horizontal" >

    <!-- id -->

    <TextView
        android:id="@+id/id"
        android:textSize="40sp"
        android:gravity="center"
        android:layout_width="55dp"
        android:layout_height="match_parent" />

    <LinearLayout
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:layout_weight="3"
        android:orientation="vertical"
        >

        <TextView
            android:id="@+id/name"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <!-- cMaker -->

        <TextView
            android:id="@+id/cMaker"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
        <!-- dAddDate -->

        <TextView
            android:id="@+id/dAddDate"
            android:layout_width="wrap_content"
            android:layout_height="wrap_content" />
    </LinearLayout>
    <!-- cVerify -->

    <TextView
        android:id="@+id/cVerifyStatus"        
        android:layout_weight="1"
        android:gravity="center"
        android:layout_width="wrap_content"
        android:layout_height="match_parent" />
    <!-- cVerifyDate -->

    <!-- Button設置為沒有焦點 -->
    <Button
        android:id="@+id/btnVerify"  
        android:focusable="false"     
        android:layout_weight="1"
        android:layout_width="wrap_content"
        android:layout_height="match_parent"
        android:text="@string/btn_Verify" />

</LinearLayout>

二、自定義適配器類繼承BaseAdapter

/**
     * 自定義ListView適配器
     * @author zhenyun
     *
     */
    private class CheckListAdapter extends BaseAdapter
    { 
        private List<CheckVouch> list=null;
        private Context context=null;
        public CheckListAdapter(List<CheckVouch> list,Context context)
        {
            super();
            this.list= list;
            this.context = context;
        }
        @Override
        public int getCount() {
            // TODO Auto-generated method stub
            return list.size();
        }

        @Override
        public Object getItem(int position) {
            // TODO Auto-generated method stub
            return list.get(position);
        }

        @Override
        public long getItemId(int position) {
            // TODO Auto-generated method stub
            return list.get(position).getId();
        }

        @Override
        public View getView(final int position, View convertView, ViewGroup parent) {
            // TODO Auto-generated method stub
            ViewHolder item = null;
            if(convertView ==null)
            {
                convertView = LayoutInflater.from(context).inflate(R.layout.checkvouch_unverify_item, null);
                item = new ViewHolder();
                item.id= (TextView) convertView.findViewById(R.id.id);
                item.name= (TextView) convertView.findViewById(R.id.name);
                item.cMaker= (TextView) convertView.findViewById(R.id.cMaker);
                item.dAddDate= (TextView) convertView.findViewById(R.id.dAddDate);
                item.cVerifyStatus= (TextView) convertView.findViewById(R.id.cVerifyStatus);
                item.btnVerify= (Button) convertView.findViewById(R.id.btnVerify);
                convertView.setTag(item);//綁定ViewHolder對象  
            }
            else
            {
                item = (ViewHolder) convertView.getTag();//取出ViewHolder對象
            }
            /**設置TextView顯示的內容，即我們存放在動態數組中的數據*/ 
            item.id.setText(String.valueOf(list.get(position).getId()));
            item.name.setText(list.get(position).getName());
            item.cMaker.setText(list.get(position).getcMaker());
            item.dAddDate.setText(DateUtils.DateToString(list.get(position).getdAddDate(),"yyyy-MM-dd"));
            item.cVerifyStatus.setText(list.get(position).getcVerify().equals("")?"未審":"已審");
            /**
             * 設置按鈕點擊事件
             */
            item.btnVerify.setOnClickListener(new OnClickListener() {
                
                @Override
                public void onClick(View arg0) {
                    // TODO Auto-generated method stub
                    Log.i("---->","你點擊了按鈕："+getItemId(position));
                }
            });
            
            return convertView;
        }
        
    }
    
    /**
     * 存儲控件
     * @author zhenyun
     *
     */
    public class ViewHolder
    {
        public TextView id;
        public TextView name;
        public TextView cMaker;
        public TextView dAddDate;
        public TextView cVerifyStatus;
        public Button btnVerify;        
    }

三、獲取數據集合、綁定顯示列表(MainActivity)

1\activity_main.xml布局文件

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

    

    <ListView
        android:id="@+id/listView"
        android:layout_width="fill_parent"
        android:layout_height="fill_parent" >
    </ListView>

</LinearLayout>

2、MainActivity類代碼

public class MainActivity extends Activity {
    private ListView listView;
    private ProgressDialog dialog;
    //獲取數據集合
    private List<CheckVouch> list = new ArrayList<CheckVouch>();

    private Handler handler = new Handler() {
        @Override
        public void handleMessage(android.os.Message msg) {
            ListResult<CheckVouch> result = (ListResult<CheckVouch>) msg.obj;
            if (result.getResult() == 1) {
                CheckListAdapter adapter = new CheckListAdapter(result.getList(), MainActivity.this);
                
                listView.setAdapter(adapter);
            } else {
                Toast.makeText(getApplicationContext(), result.getMessage(),
                        Toast.LENGTH_LONG);
            }
            dialog.dismiss();
        };
    };

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        // TODO Auto-generated method stub
        //設置標題
        setTitle(R.string.uncheck_titile);
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        listView = (ListView) this.findViewById(R.id.listView);
        dialog = new ProgressDialog(this);
        dialog.setTitle("提示");
        dialog.setMessage("正在查詢...");

        dialog.show();
        new Thread(new SearchThread()).start();

    }
    @Override
    public void setTitle(CharSequence title) {
        // TODO Auto-generated method stub
        //super.setTitle(R.string.uncheck_titile);
        super.setTitle(title);
    }

    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        // TODO Auto-generated method stub
        // return super.onCreateOptionsMenu(menu);
        getMenuInflater().inflate(R.menu.main, menu);
        return true;
    }

    private class SearchThread implements Runnable {

        @Override
        public void run() {
            // TODO Auto-generated method stub
            ListResult<CheckVouch> result = Common.getInstance()
                    .checkvouch_SelectList();

            Message msg = Message.obtain();
            msg.obj = result;

            handler.sendMessage(msg);
        }

    }
}

我讀取的是網絡數據，必須開啟一個新的線程，所以放在handler中處理顯示的數據。