Android之图文混排（二）源代码 Android

结果截图：

文章图片

包含三个类文件：CommonUri.java 、DownIoadImage.java 、 MainActivity.java
两个layout文件：activity_main.xmlitem.xml
activity_main.xml文件：

item.xml文件：
【Android之图文混排（二）源代码】

CommonUri类用于存储Uri

public class CommonUri { public static String PRODUCT_URL = ""; public static String PRODUCT_IMG = ""; }

DownloadImage类用于从服务器下载图片

public class DownloadImage { private String image_path; public DownloadImage(String image_path) { // TODO Auto-generated constructor stub this.image_path = image_path; } public void loadImage(final ImageCallBack callBack) { final Handler handler = new Handler(){ @Override public void handleMessage(Message msg) { // TODO Auto-generated method stub super.handleMessage(msg); callBack.getDrawable((Drawable)msg.obj); } }; new Thread(new Runnable() {@Override public void run() { // TODO Auto-generated method stub try { Drawable drawable = Drawable.createFromStream(new URL(image_path).openStream(), ""); Message message = Message.obtain(); message.obj = drawable; handler.sendMessage(message); } catch (MalformedURLException e) { // TODO Auto-generated catch block e.printStackTrace(); } catch (IOException e) { // TODO Auto-generated catch block e.printStackTrace(); } } }).start(); } //接口的回调方式 public interface ImageCallBack { public void getDrawable(Drawable drawable); }}

MainActivity类：

//图文混排，先保证文字出现 public class MainActivity extends Activity { private MyAdapter adapter = null; private ListView listView = null; private ProgressDialog dialog = null; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); listView = (ListView)findViewById(R.id.listView1); adapter= new MyAdapter(this); dialog = new ProgressDialog(this); dialog.setTitle("提示下载信息"); dialog.setMessage("正在下载，请稍后..."); new MyTask().execute(CommonUri.PRODUCT_URL); } public class MyAdapter extends BaseAdapter { Context context = null; private LayoutInflater layoutInflater ; private List list; public MyAdapter(Context context) { this.context = context; layoutInflater = layoutInflater.from(context); }public void setData(List list) { this.list = list; }@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 position; }@Override public View getView(int position, View convertView, ViewGroup parent) { // TODO Auto-generated method stub View view = null; if(convertView == null) { view = layoutInflater.inflate(R.layout.item, null); } else view = convertView; TextView name = (TextView)findViewById(R.id.textView1); TextView address = (TextView)findViewById(R.id.textView2); TextView price = (TextView)findViewById(R.id.textView3); name.setText(list.get(position).get("proname").toString()); //产品名 address.setText(list.get(position).get("proaddress").toString()); //产品地址 price.setText(list.get(position).get("proprice").toString()); //产品价格final ImageView imageView = (ImageView)findViewById(R.id.imageView1); DownloadImage downloadImage = new DownloadImage(CommonUri.PRODUCT_IMG + list.get(position).get("proimage").toString()); downloadImage.loadImage(new DownloadImage.ImageCallBack() {@Override public void getDrawable(Drawable drawable) { // TODO Auto-generated method stub imageView.setImageDrawable(drawable); } }); return view; // imageView.setImageBitmap(bm); 实际开发中，最好选用Bitmap } } public class MyTask extends AsyncTask>> {@Override protected void onPreExecute() { // TODO Auto-generated method stub super.onPreExecute(); dialog.show(); } @Override protected void onPostExecute(List result) { // TODO Auto-generated method stub super.onPostExecute(result); dialog.dismiss(); adapter.setData(result); listView.setAdapter(adapter); adapter.notifyDataSetChanged(); } @Override protected void onProgressUpdate(Void... values) { // TODO Auto-generated method stub super.onProgressUpdate(values); } @Override protected List doInBackground(String... params) { // TODO Auto-generated method stub List list = new ArrayList(); try {HttpClient client = new DefaultHttpClient(); HttpPostpost = new HttpPost(params[0]); HttpResponse response = client.execute(post); if(response.getStatusLine().getStatusCode() == 200) { String jsonString = EntityUtils.toString(response.getEntity(), "utf-8"); //接下来，对于jsonString进行解析 //略......见图//// }} catch (Exception e) { e.printStackTrace(); }return list; } }}