android:通过url向网络端获取json格式数据并解析显示

第一步：通过httpclient向网络端获取到数据返回jsonobject格式的数据

用到的对象：httpClient联网 httpget or httppost通过地址发出请求

httpresponse 接收idao返回数据 response.getEntity() EntityUtils进行字符串的处理

jsonobject进行数据的封装

第二部：定义方法进行相应的解析

解析数据一般如果不只是一组数据要用到jsonArray 通过jsonobject的getJSONArray()得到

通过对array的遍历根据元素名称取出各组相应的数据

第三部：得到数据并且进行填充

得到各个需要填充的空间根据各自的方法进行数据的填充

布局文件：

</LinearLayout>

主类：

public class HttpActivity extends Activity {
EditText username;
EditText userorder;
EditText userphone;

public static String name;
public static String phone;
public static String ordernum;

Button get;
String url;

@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);

  username = (EditText) findViewById(R.id.name);
  userorder = (EditText) findViewById(R.id.usermobile);
  userphone = (EditText) findViewById(R.id.userphone);
  get = (Button) findViewById(R.id.button);
  url = "http://192.168.1.80:9090/ME3/jsp/token/sellexit.jsp";
  get.setOnClickListener(new OnClickListener() {

   @Override
   public void onClick(View v) {
    try {
     JSONObject jsonObject=doGet(url);
     Log.i("HttpActivity001", jsonObject.toString());
     JSONArray array = jsonObject.getJSONArray("data");
     for (int i = 0; i < array.length(); i++) {

      JSONObject jsonItem = array.getJSONObject(i);
      name=(String) jsonItem.get("username");
      ordernum=(String) jsonItem.get("ordernum");
      phone=(String) jsonItem.get("phonenum");
      Log.i("HttpActivity", name);
     }
     username.setText(name);
     userorder.setText(ordernum);
     userphone.setText(phone);
    } catch (Exception e) {
     // TODO: handle exception
    }
    // TODO Auto-generated method stub

   }
  });

}

网络连接获取数据：

public static JSONObject doGet(String url) {
  try {
   String result = null;
   DefaultHttpClient httpClient = new DefaultHttpClient();

   HttpGet request = new HttpGet(url);
   HttpResponse response = httpClient.execute(request);
   result = EntityUtils.toString(response.getEntity());
   JSONObject object = new JSONObject(result);
   Log.i("HttpActivity", result);
   return object;

  } catch (Exception e) {
   // TODO: handle exception
  }
  return null;

}

得到数据，解析：

public class JsonParser {

public static ListVideoEntity parse(String returnData) {

// String returnData = returnData();

ListVideoEntity lve = new ListVideoEntity();

try {

JSONObject jsonObject = new JSONObject(returnData);

String next = jsonObject.optString("next");

if (next == null || "".equals(next)) {

lve.setNext("0");

}

lve.setNext(next);

JSONArray jsonArray = new JSONArray(jsonObject.optString("videos"));

List<VideoEntity> feList = new ArrayList<VideoEntity>();

for (int i = 0; i < jsonArray.length(); i++) {

JSONObject itemObject = (JSONObject) jsonArray.opt(i);

VideoEntity fe = new VideoEntity();

//Log.d("D", "解析第：" + i + "条记录");

fe.setId(itemObject.getString("id"));

fe.setTitle(itemObject.getString("title"));

fe.setPlayurl(itemObject.getString("playurl"));

fe.setPlaytimes(itemObject.getString("playtimes"));

fe.setDescription(itemObject.getString("description"));

fe.setDuration(itemObject.getString("duration"));

fe.setChannel(itemObject.getString("channel"));

fe.setThumbnail(itemObject.getString("thumbnail"));

feList.add(fe);

}

lve.setVeList(feList);

} catch (Exception e) {

e.printStackTrace();

}

return lve;

}

解析完成就可以进行展示

public void showData(List<VideoEntity> returnData) {

if (returnData != null && returnData.size() > 0) {

Log.d("D", "returnData:" + returnData.size());

listData.addAll(returnData);

if (init) {

init = false;

adapter = new MyAdapter(getApplicationContext(), listview,

R.layout.loading, listData);

listview.setAdapter(adapter);

} else {

adapter.notifyDataSetChanged();

listview.moreDataloadComplete();

}

} else {

Toast.makeText(getApplicationContext(), "没有请求到数据",

Toast.LENGTH_SHORT).show();

}

bntSwitch = true;

moreSwitch = true;

}

｝

public class MyAdapter extends ArrayAdapter<VideoEntity> {

private BaseListView solpListView;

// 所有的要加载的数据数量

public Context context;

private List<VideoEntity> datas;

private AsyncImageLoader imageloader;

public MyAdapter(Context context, BaseListView listView, int ResourceId,

List<VideoEntity> datas) {

super(context, 0, datas);

this.context = context;

solpListView = listView;

this.datas = datas;

imageloader = new AsyncImageLoader();

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

ViewHolder holder = null;

VideoEntity video = datas.get(position);

if (convertView == null) {

holder = new ViewHolder();

convertView = LayoutInflater.from(context).inflate(

R.layout.videoitem, null);

holder.title = (TextView) convertView.findViewById(R.id.title);

holder.nailImageView = (ImageView) convertView

.findViewById(R.id.image);

holder.playtimes = (TextView) convertView

.findViewById(R.id.playtimes);

holder.duration = (TextView) convertView

.findViewById(R.id.durationnum);

convertView.setTag(holder);

} else {

holder = (ViewHolder) convertView.getTag();

}

VideoEntity ve = getItem(position);

// 获取图片的URL

String imageUrl = ve.getThumbnail();

// 获取图片的VIEW

ImageView imageView = holder.nailImageView;

imageView.setTag(imageUrl);

// 利用接口回调加载图片

Drawable cachedImage = imageloader.loadDrawable(imageUrl,

new AsyncImageLoader.ImageCallback() {

public void imageLoaded(Drawable drawable, String imageUrl) {

ImageView imageViewByTag = (ImageView) solpListView

.findViewWithTag(imageUrl);

if (imageViewByTag != null && drawable != null) {

imageViewByTag.setImageDrawable(drawable);

}

});

if (cachedImage == null) {

// 添加默认图片

imageView.setImageResource(R.drawable.aa);

} else {

imageView.setImageDrawable(cachedImage);

}

holder.title.setText(video.getTitle());

holder.playtimes.setText(video.getPlaytimes());

String Duration = video.getDuration();

holder.duration.setText(Utils.formatDuration(Duration));

return convertView;

}

public class ViewHolder {

TextView title;

ImageView nailImageView;

TextView playtimes;

TextView duration;

}

｝

秒客网

android:通过url向网络端获取json格式数据并解析显示

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