我有一个listview，显示来自url的名称，在json响应中还有news_id。我使用pojo作为getter和setter的名字和news_id。我想过滤所选列表视图的名称及其user_id，并将news_id保存在数组列表中。
private static final String TAG_HELLOGALLI =＆＃34; hellogalli＆＃34 ;; private static final String TAG_STATUS =＆＃34; status＆＃34 ;;
JSONArray contacts = null;
ArrayList<HashMap<String,String>> contactList;
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
contactList = new ArrayList<HashMap<String, String>>();
ListView lv = getListView();
new GetContacts().execute();
}
private class GetContacts extends AsyncTask<String, Void, ArrayList<HashMap<String, String>>>
{
@Override
protected void onPreExecute()
{
super.onPreExecute();
progressDialog = new ProgressDialog(MainActivity.this);
progressDialog.setMessage("Please wait...");
progressDialog.setCancelable(false);
progressDialog.show();
}
@Override
protected ArrayList<HashMap<String, String>> doInBackground(String... params) {
ServiceHandler serviceHandler = new ServiceHandler();
String jsonstr = serviceHandler.makeServiceCall(url, ServiceHandler.POST);
Log.d("Response:", ">" + jsonstr);
try {
JSONObject jsonObject = new JSONObject(jsonstr);
String status = jsonObject.getString(TAG_STATUS);
if (status.equals(0))
{
contacts = jsonObject.getJSONArray(TAG_MAIN);
Log.d("Contacts", String.valueOf(contacts));
for (int i = 0; i < contacts.length(); i++)
{
JSONObject c = contacts.getJSONObject(i);
String newsid = c.getString(TAG_NEWSID);
Log.d("NEWSID", newsid);
String title = c.getString(TAG_TITLE);
String newscat = c.getString(TAG_NEWSCAT);
String metatitle = c.getString(TAG_METATITLE);
String newscover = c.getString(TAG_NEWSCOVER);
String location = c.getString(TAG_LOCATION);
String metades = c.getString(TAG_METADES);
String newsshortdesc = c.getString(TAG_NEWSSHORTDESC);
String newsdes = c.getString(TAG_NEWSDES);
String tags = c.getString(TAG_TAGS);
String updatedate = c.getString(TAG_UPDATEDATE);
String sndate = c.getString(TAG_SNDATE);
String chknot = c.getString(TAG_CHKNOT);
String pagecount = c.getString(TAG_PAGECOUNT);
String hellogalli = c.getString(TAG_HELLOGALLI);
// String status = c.getString(TAG_STATUS);
HashMap<String, String> contact = new HashMap<String, String>();
contact.put(TAG_NEWSID, newsid);
contact.put(TAG_TITLE, title);
contact.put(TAG_NEWSCAT, newscat);
contact.put(TAG_METATITLE, metatitle);
contact.put(TAG_LOCATION, location);
contact.put(TAG_NEWSCOVER, newscover);
contact.put(TAG_METADES, metades);
contact.put(TAG_NEWSSHORTDESC, newsshortdesc);
contact.put(TAG_NEWSDES, newsdes);
contact.put(TAG_TAGS, tags);
contact.put(TAG_UPDATEDATE, updatedate);
contact.put(TAG_SNDATE, sndate);
contact.put(TAG_CHKNOT, chknot);
contact.put(TAG_PAGECOUNT, pagecount);
contact.put(TAG_HELLOGALLI, hellogalli);
// contact.put(TAG_STATUS, status);
contactList.add(contact);
}
}
else if(status.equals(1))
{
Toast.makeText(getApplicationContext(), "There was some error! Please try again.", Toast.LENGTH_LONG).show();
}
} catch (JSONException e) {
e.printStackTrace();
}
return contactList;
}
@Override
protected void onPostExecute(ArrayList<HashMap<String, String>> aVoid)
{
super.onPostExecute(aVoid);
if (progressDialog.isShowing())
progressDialog.dismiss();
ListAdapter adapter = new SimpleAdapter(
MainActivity.this, contactList,
R.layout.list_item, new String[] { TAG_NEWSID, TAG_TITLE,
TAG_NEWSDES }, new int[] { R.id.name,
R.id.email, R.id.mobile });
setListAdapter(adapter);
}
}
}
从uriin listview获取数据时出现错误
04-29 18:19:13.770 30932-30958/com.example.esi_4.jsonparser D/Response:: >[{"news_id":"A9E70","title":"Adarsh Society Demolish Karne Ke Order Diye Bombay HC Ne ","news_cat":"","meta_title":"Adarsh Society Demolish Karne Ke Order Diye Bombay HC Ne ","meta_desc":"Adarsh Society Demolish Karne Ke Order Diye Bombay HC Ne ","news_cover":"IMG_20160429_154050.jpg","location":"","breaking_news":"1","news_desc":"<p>??<br \/>\r\nAdarsh Society Demolish Karne Ke Order Diye Bombay HC Ne <\/p>\r\n\r\n<p>? Bombay High Court Ne Adarsh Housing Society building Demolish Karne Ke Order Diye <\/p>\r\n\r\n<p>?The court also directed the state to initiate criminal prosecution against officers involved in the scam <\/p>\r\n\r\n<p>?Aur Plot restore Karne Ko Bhi Kaha Gaya <\/p>\r\n\r\n<p>?The society, originally meant to be a six-storey structure to house Kargil war heroes and war widows, was converted into a 100-metre-tall building<\/p>\r\n\r\n<p>?Court Ne Defence Ministry Ko Apne Officers Ke Khilaf Pehle Hi Action Na Lene Ke Liye Departmental Inquiry Conduct Karne Ko Kaha Hai <\/p>\r\n\r\n<p><br \/>\r\nGallinews.com <br \/>\r\nDownload Mobile Apps from<br \/>\r\nhttps:\/\/t.co\/LmRWlGO5Pm<\/p>\r\n\r\n<p>Facebook (For More IMP News)like <br \/>\r\nhttps:\/\/m.facebook.com\/gallinews\/<br \/>\r\nhttps:\/\/twitter.com\/gallinews?s=08<\/p>\r\n","news_short_desc":"","tags":"","sn_date":"0000-00-00 00:00:00","page_count":"15","update_date":"2016-04-29 05:16:49","chk_not":"0","hello_galli":"0","status":"0"},{"news_id":"BA8D7","title":"Firing at Wadi Bunder P Demello","news_cat":"","meta_title":"Firing at Wadi Bunder P Demello","meta_desc":"Firing at Wadi Bunder P Demello","news_cover":"dowbshshgsnload.jpg","location":"","breaking_news":"1","news_desc":"<p>??<\/p>\r\n\r\n<p>Firing at Wadi Bunder P Demello<\/p>\r\n\r\n<p>?Wadi Bunder Bridge ke niche Crime Branch(Spl Branch) ki team ne ki Firing <\/p>\r\n\r\n<p>?Drugs Peddlers ko pakadne aye Spl Branch ke officers ne ek drug peddlers ko tab goli maari tab woh Police par firing karne ki koshish kar raha tha<\/p>\r\n\r\n<p>?Drugs Peddlers ki gang Masjid Bunder Track par Bhag nikle <\/p>\r\n\r\n<p>Or Waha se pathar Marne lage<\/p>\r\n\r\n<p>\u26abOr Track or Andhera ka Sahara le kar Sab Peddlers Bhag gaya<\/p>\r\n\r\n<p>?Local People Complaint abt Firing jab un ko zor se Awaz ayee<\/p>\r\n\r\n<p>Gallinews.com <br \/>\r\nDownload Mobile Apps from<br \/>\r\nhttps:\/\/t.co\/LmRWlGO5Pm<\/p>\r\n\r\n<p>Facebook (For More IMP News)like <br \/>\r\nhttps:\/\/m.facebook.com\/gallinews\/<br \/>\r\nhttps:\/\/twitter.com\/gallinews?s=08<\/p>\r\n","news_short_desc":"","tags":"","sn_date":"0000-00-00 00:00:00","page_count":"183","update_date":"2016-04-28 13:35:06","chk_not":"0","hello_galli":"0","status":"0"},{"news_id":"CF6F2","title":"Trupti Desai ke khilaf mamla darj ","news_cat":"","meta_title":"Trupti Desai ke khilaf mamla darj ","meta_desc":"Trupti Desai ke khilaf mamla darj ","news_cover":"IMG_20160429_001010.jpg","location":"","breaking_news":"1","news_desc":"<p>??<\/p>\r\n\r\n<p>Trupti Desai ke khilaf mamla darj <\/p>\r\n\r\n<p>??Tardeo Police may Hua Bombay Police Act Ke Tahet mamla Darj<\/p>\r\n\r\n<p>?Trupti Desai par Bombay police Act ke tahet mamla darj<\/p>\r\n\r\n<p>?Bina Permission K Protest Karne Par Kiya Gya Case Registered <\/p>\r\n\r\n<p><br \/>\r\nGallinews.com <br \/>\r\nDownload Mobile Apps from<br \/>\r\nhttps:\/\/t.co\/LmRWlGO5Pm<\/p>\r\n\r\n<p>Facebook (For More IMP News)like <br \/>\r\nhttps:\/\/m.facebook.com\/gallinews\/<br \/>\r\nhttps:\/\/twitter.com\/gallinews?s=08<\/p>\r\n","news_short_desc":"","tags":"","sn_date":"0000-00-00 00:00:00","page_count":"123","update_date":"2016-04-28 11:43:52","chk_not":"0","hello_galli":"0","status":"0"},{"news_id":"364CF","title":"Trupti Desai Detainrd by Police ","news_cat":"","meta_title":"Trupti Desai Detainrd by Police ","meta_desc":"Trupti Desai Detainrd by Police ","news_cover":"Screenshot_2016-04-28-21-56-17-picsay_1.jpg","location":"","breaking_news":"1","news_desc":"<p>???<\/p>\r\
04-29 18:19:13.830 30932-30958/com.example.esi_4.jsonparser W/System.err: org.json.JSONException: Value [{"tags":"","status":"0","location":"","sn_date":"0000-00-00 00:00:00","news_cover":"IMG_20160429_154050.jpg","page_count":"15","news_id":"A9E70","title":"Adarsh Society Demolish Karne Ke Order Diye Bombay HC Ne ","meta_desc":"Adarsh Society Demolish Karne Ke Order Diye Bombay HC Ne ","news_cat":"","chk_not":"0","hello_galli":"0","news_short_desc":"","update_date":"2016-04-29 05:16:49","breaking_news":"1","meta_title":"Adarsh Society Demolish Karne Ke Order Diye Bombay HC Ne ","news_desc":"<p>??<br \/>\r\nAdarsh Society Demolish Karne Ke Order Diye Bombay HC Ne <\/p>\r\n\r\n<p>? Bombay High Court Ne Adarsh Housing Society building Demolish Karne Ke Order Diye <\/p>\r\n\r\n<p>?The court also directed the state to initiate criminal prosecution against officers involved in the scam <\/p>\r\n\r\n<p>?Aur Plot restore Karne Ko Bhi Kaha Gaya <\/p>\r\n\r\n<p>?The society, originally meant to be a six-storey structure to house Kargil war heroes and war widows, was converted into a 100-metre-tall building<\/p>\r\n\r\n<p>?Court Ne Defence Ministry Ko Apne Officers Ke Khilaf Pehle Hi Action Na Lene Ke Liye Departmental Inquiry Conduct Karne Ko Kaha Hai <\/p>\r\n\r\n<p><br \/>\r\nGallinews.com <br \/>\r\nDownload Mobile Apps from<br \/>\r\nhttps:\/\/t.co\/LmRWlGO5Pm<\/p>\r\n\r\n<p>Facebook (For More IMP News)like <br \/>\r\nhttps:\/\/m.facebook.com\/gallinews\/<br \/>\r\nhttps:\/\/twitter.com\/gallinews?s=08<\/p>\r\n"},{"tags":"","status":"0","location":"","sn_date":"0000-00-00 00:00:00","news_cover":"dowbshshgsnload.jpg","page_count":"183","news_id":"BA8D7","title":"Firing at Wadi Bunder P Demello","meta_desc":"Firing at Wadi Bunder P Demello","news_cat":"","chk_not":"0","hello_galli":"0","news_short_desc":"","update_date":"2016-04-28 13:35:06","breaking_news":"1","meta_title":"Firing at Wadi Bunder P Demello","news_desc":"<p>??<\/p>\r\n\r\n<p>Firing at Wadi Bunder P Demello<\/p>\r\n\r\n<p>?Wadi Bunder Bridge ke niche Crime Branch(Spl Branch) ki team ne ki Firing <\/p>\r\n\r\n<p>?Drugs Peddlers ko pakadne aye Spl Branch ke officers ne ek drug peddlers ko tab goli maari tab woh Police par firing karne ki koshish kar raha tha<\/p>\r\n\r\n<p>?Drugs Peddlers ki gang Masjid Bunder Track par Bhag nikle <\/p>\r\n\r\n<p>Or Waha se pathar Marne lage<\/p>\r\n\r\n<p>⚫Or Track or Andhera ka Sahara le kar Sab Peddlers Bhag gaya<\/p>\r\n\r\n<p>?Local People Complaint abt Firing jab un ko zor se Awaz ayee<\/p>\r\n\r\n<p>Gallinews.com <br \/>\r\nDownload Mobile Apps from<br \/>\r\nhttps:\/\/t.co\/LmRWlGO5Pm<\/p>\r\n\r\n<p>Facebook (For More IMP News)like <br \/>\r\nhttps:\/\/m.facebook.com\/gallinews\/<br \/>\r\nhttps:\/\/twitter.com\/gallinews?s=08<\/p>\r\n"},{"tags":"","status":"0","location":"","sn_date":"0000-00-00 00:00:00","news_cover":"IMG_20160429_001010.jpg","page_count":"123","news_id":"CF6F2","title":"Trupti Desai ke khilaf mamla darj ","meta_desc":"Trupti Desai ke khilaf mamla darj ","news_cat":"","chk_not":"0","hello_galli":"0","news_short_desc":"","update_date":"2016-04-28 11:43:52","breaking_news":"1","meta_title":"Trupti Desai ke khilaf mamla darj ","news_desc":"<p>??<\/p>\r\n\r\n<p>Trupti Desai ke khilaf mamla darj <\/p>\r\n\r\n<p>??Tardeo Police may Hua Bombay Police Act Ke Tahet mamla Darj<\/p>\r\n\r\n<p>?Trupti Desai par Bombay police Act ke tahet mamla darj<\/p>\r\n\r\n<p>?Bina Permission K Protest Karne Par Kiya Gya Case Registered <\/p>\r\n\r\n<p><br \/>\r\nGallinews.com <br \/>\r\nDownload Mobile Apps from<br \/>\r\nhttps:\/\/t.co\/LmRWlGO5Pm<\/p>\r\n\r\n<p>Facebook (For More IMP News)like <br \/>\r\nhttps:\/\/m.facebook.com\/gallinews\/<br \/>\r\nhttps:\/\/twitter.com\/gallinews?s=08<\/p>\r\n"},{"tags":"","status":"0","location":"","sn_date":"0000-00-00 00:00:00","news_cover":"Screenshot_2016-04-28-21-56-17-picsay_1.jpg","page_count":"135","news_id":"364CF","title":"Trupti Desai Detainrd by Police ","meta_desc":"Trupti Desai Detainrd by Police ","news_cat
04-29 18:19:13.850 30932-30958/com.example.esi_4.jsonparser W/System.err: at org.json.JSON.typeMismatch(JSON.java:111)
04-29 18:19:13.860 30932-30958/com.example.esi_4.jsonparser W/System.err: at org.json.JSONObject.<init>(JSONObject.java:159)
04-29 18:19:13.860 30932-30958/com.example.esi_4.jsonparser W/System.err: at org.json.JSONObject.<init>(JSONObject.java:172)
04-29 18:19:13.860 30932-30958/com.example.esi_4.jsonparser W/System.err: at com.example.esi_4.jsonparser.MainActivity$GetContacts.doInBackground(MainActivity.java:82)
04-29 18:19:13.860 30932-30958/com.example.esi_4.jsonparser W/System.err: at com.example.esi_4.jsonparser.MainActivity$GetContacts.doInBackground(MainActivity.java:61)
04-29 18:19:13.860 30932-30958/com.example.esi_4.jsonparser W/System.err: at android.os.AsyncTask$2.call(AsyncTask.java:288)
04-29 18:19:13.860 30932-30958/com.example.esi_4.jsonparser W/System.err: at java.util.concurrent.FutureTask.run(FutureTask.java:237)
04-29 18:19:13.870 30932-30958/com.example.esi_4.jsonparser W/System.err: at android.os.AsyncTask$SerialExecutor$1.run(AsyncTask.java:231)
04-29 18:19:13.870 30932-30958/com.example.esi_4.jsonparser W/System.err: at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1112)
04-29 18:19:13.870 30932-30958/com.example.esi_4.jsonparser W/System.err: at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:587)
04-29 18:19:13.870 30932-30958/com.example.esi_4.jsonparser W/System.err: at java.lang.Thread.run(Thread.java:841)
04-29 18:19:13.910 30932-30932/com.example.esi_4.jsonparser E/ViewRootImpl: sendUserActionEvent() mView == null
答案 0 :(得分：0)
这里的问题是JSON文件。格式不正确，当您尝试从格式不正确的JSON文件中读取时，应用程序将崩溃。由于没有其他信息是我唯一的猜测。首先尝试验证JSON：http://jsonlint.com/
复制并粘贴您的JSON，您将看到此错误。
Error: Parse error on line 64:
...1", "news_desc": "???<\/p>\r\
----------------------^
Expecting 'STRING', 'NUMBER', 'NULL', 'TRUE', 'FALSE', '{', '[', got 'undefined'