我正在和Json合作。我的json看起来像这个结构
我使用asynctask解析我的json并在listview中显示它有一个问题Info jsonarray。我也解析时间jsonobject但在arraylist中只添加了最后一个对象。这是我的源代码
private class CustomerStatistic extends AsyncTask<String, Void, String> {
ProgressDialog pDialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
pDialog = new ProgressDialog(getActivity());
pDialog.setCancelable(false);
pDialog.show();
pDialog.setContentView(R.layout.custom_progressdialog);
}
@Override
protected String doInBackground(String... params) {
return Utils.getJSONString(params[0]);
}
@Override
protected void onPostExecute(String result) {
super.onPostExecute(result);
try {
JSONArray mainJson = new JSONArray(result);
for (int i = 0; i < mainJson.length(); i++) {
JSONObject objJson = mainJson.getJSONObject(i);
objItem = new ServerItems();
objItem.setImage(imageurl + objJson.getString("ipone_4"));
objItem.setTitle(objJson.getString("title"));
objItem.setYoutube(objJson.getString("youtube"));
objItem.setWritten(objJson.getString("written"));
objItem.setCategory(objJson.getString("category"));
objItem.setDescraption(objJson.getString("descraption"));
objItem.setGeorgia_time(objJson.getString("georgia_time"));
objItem.setWold_time(objJson.getString("wold_time"));
objItem.setStars(objJson.getString("stars"));
objItem.setBlurimage(imageurl
+ objJson.getString("ipone_4_blur"));
JSONObject cinema = objJson.getJSONObject("Cinemas");
JSONArray cinemasarray = cinema.getJSONArray("Cinemaname");
for (int j = 0; j < cinemasarray.length(); j++) {
JSONObject objJson1 = cinemasarray.getJSONObject(j);
JSONArray info = objJson1.getJSONArray("info");
for (int k = 0; k < info.length(); k++) {
JSONObject information = info.getJSONObject(k);
objItem.setTime(information.getString("time"));
Log.e("time is", objItem.getTime());
}
}
arrayOfList.add(objItem);
}
} catch (JSONException e) {
e.printStackTrace();
}
if (pDialog != null) {
pDialog.dismiss();
pDialog = null;
}
setAdapterToListview();
}
}
并且在listview的点击中我替换了新的片段，我也按位置填充了我的元素。我只有一个问题'时间'jsobobject 这是我的listview的onclick java代码
main_listview.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
mPosition = position;
MoviewListResult newFragment = new MoviewListResult();
FragmentTransaction transaction = getFragmentManager()
.beginTransaction();
Bundle bundle = new Bundle();
bundle.putString("image", arrayOfList.get(position)
.getBlurimage());
bundle.putString("title", arrayOfList.get(position).getTitle());
bundle.putString("trailer", arrayOfList.get(position)
.getYoutube());
bundle.putString("category", arrayOfList.get(position)
.getCategory());
bundle.putString("writer", arrayOfList.get(position)
.getWritten());
bundle.putString("stars", arrayOfList.get(position).getStars());
bundle.putString("geotime", arrayOfList.get(position)
.getGeorgia_time());
bundle.putString("worldtime", arrayOfList.get(position)
.getWold_time());
bundle.putString("descraption", arrayOfList.get(position)
.getDescraption());
bundle.putString("time", arrayOfList.get(position).getTime());
newFragment.setArguments(bundle);
transaction.replace(R.id.content_frame, newFragment);
transaction.commit();
}
});
答案 0 :(得分：0)
将此作为JSONParser使用：
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.client.ClientProtocolException;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.json.JSONException;
import org.json.JSONObject;
import android.util.Log;
public class JSONParser {
static InputStream is = null;
static JSONObject jObj = null;
static String json = "";
// constructor
public JSONParser() {
}
public JSONObject getJSONFromUrl(String url) {
// Making HTTP request
try {
// defaultHttpClient
DefaultHttpClient httpClient = new DefaultHttpClient();
HttpPost httpPost = new HttpPost(url);
HttpResponse httpResponse = httpClient.execute(httpPost);
HttpEntity httpEntity = httpResponse.getEntity();
is = httpEntity.getContent();
} catch (UnsupportedEncodingException e) {
e.printStackTrace();
} catch (ClientProtocolException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
try {
BufferedReader reader = new BufferedReader(new InputStreamReader(
is, "iso-8859-1"), 8);
StringBuilder sb = new StringBuilder();
String line = null;
while ((line = reader.readLine()) != null) {
sb.append(line + "n");
}
is.close();
json = sb.toString();
} catch (Exception e) {
Log.e("Buffer Error", "Error converting result " + e.toString());
}
// try parse the string to a JSON object
try {
jObj = new JSONObject(json);
} catch (JSONException e) {
Log.e("JSON Parser", "Error parsing data " + e.toString());
}
// return JSON String
return jObj;
}
}
然后是活动和AsyncTask实现：
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.app.ProgressDialog;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
import learn2crack.asynctask.library.JSONParser;
public class MainActivity extends Activity {
TextView uid;
TextView name1;
TextView email1;
Button Btngetdata;
//URL to get JSON Array
private static String url = "http://10.0.2.2/JSON/";
//JSON Node Names
private static final String TAG_USER = "user";
private static final String TAG_ID = "id";
private static final String TAG_NAME = "name";
private static final String TAG_EMAIL = "email";
JSONArray user = null;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Btngetdata = (Button)findViewById(R.id.getdata);
Btngetdata.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
new JSONParse().execute();
}
});
}
private class JSONParse extends AsyncTask<String, String, JSONObject> {
private ProgressDialog pDialog;
@Override
protected void onPreExecute() {
super.onPreExecute();
uid = (TextView)findViewById(R.id.uid);
name1 = (TextView)findViewById(R.id.name);
email1 = (TextView)findViewById(R.id.email);
pDialog = new ProgressDialog(MainActivity.this);
pDialog.setMessage("Getting Data ...");
pDialog.setIndeterminate(false);
pDialog.setCancelable(true);
pDialog.show();
}
@Override
protected JSONObject doInBackground(String... args) {
JSONParser jParser = new JSONParser();
// Getting JSON from URL
JSONObject json = jParser.getJSONFromUrl(url);
return json;
}
@Override
protected void onPostExecute(JSONObject json) {
pDialog.dismiss();
try {
// Getting JSON Array
user = json.getJSONArray(TAG_USER);
JSONObject c = user.getJSONObject(0);
// Storing JSON item in a Variable
String id = c.getString(TAG_ID);
String name = c.getString(TAG_NAME);
String email = c.getString(TAG_EMAIL);
//Set JSON Data in TextView
uid.setText(id);
name1.setText(name);
email1.setText(email);
} catch (JSONException e) {
e.printStackTrace();
}
}
}
}
了解详情：
http://www.learn2crack.com/2013/10/android-asynctask-json-parsing-example.html