Le contenu de la carte a changé, mais ListView n'a pas reçu de notification Avec AsyncTask

Je suis en utilisant AsyncTask pour définir mes articles et d'autres choses, dans le postExecute j'appelle une Méthode synchronisée où je fais ce

mAllResultsAdapter.setItems(mAllResultsItem);
mAllResultsAdapter.notifyDataSetChanged();
mListView.invalidate();
mListView.requestLayout();

La plupart du temps si je télécharger de nouvelles données et de mettre à jour mon listview adaptateur/il fonctionne simplement, et très bon.
Mais de toute façon, il se bloque parfois, quelqu'un peut-il m'aider avec ce problème.

heres mon crash.

  03-19 14:15:02.170: E/AndroidRuntime(23242): FATAL EXCEPTION: main
03-19 14:15:02.170: E/AndroidRuntime(23242): java.lang.IllegalStateException: The content of the adapter has changed but ListView did not receive a notification. Make sure the content of your adapter is not modified from a background thread, but only from the UI thread. [in ListView(2131034153, class android.widget.ListView) with Adapter(class com....tracebuzz.allresults.AllResultsAdapter)]
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.widget.ListView.layoutChildren(ListView.java:1556)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.widget.AbsListView.onLayout(AbsListView.java:1993)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.view.View.layout(View.java:9606)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.view.ViewGroup.layout(ViewGroup.java:3879)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.widget.FrameLayout.onLayout(FrameLayout.java:400)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.view.View.layout(View.java:9606)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.view.ViewGroup.layout(ViewGroup.java:3879)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.widget.RelativeLayout.onLayout(RelativeLayout.java:912)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.view.View.layout(View.java:9606)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.view.ViewGroup.layout(ViewGroup.java:3879)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.widget.FrameLayout.onLayout(FrameLayout.java:400)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.view.View.layout(View.java:9606)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.view.ViewGroup.layout(ViewGroup.java:3879)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.widget.LinearLayout.setChildFrame(LinearLayout.java:1542)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.widget.LinearLayout.layoutVertical(LinearLayout.java:1403)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.widget.LinearLayout.onLayout(LinearLayout.java:1314)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.view.View.layout(View.java:9606)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.view.ViewGroup.layout(ViewGroup.java:3879)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.widget.FrameLayout.onLayout(FrameLayout.java:400)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.view.View.layout(View.java:9606)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.view.ViewGroup.layout(ViewGroup.java:3879)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.view.ViewRoot.performTraversals(ViewRoot.java:1288)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.view.ViewRoot.handleMessage(ViewRoot.java:2066)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.os.Handler.dispatchMessage(Handler.java:99)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.os.Looper.loop(Looper.java:132)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at android.app.ActivityThread.main(ActivityThread.java:4126)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at java.lang.reflect.Method.invokeNative(Native Method)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at java.lang.reflect.Method.invoke(Method.java:491)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:844)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)
03-19 14:15:02.170: E/AndroidRuntime(23242):    at dalvik.system.NativeStart.main(Native Method)

Je Devrais mettre à jour ma qeustion avec mon code, si elle est ici.

public class AllResultsActivity extends TBActivity{
public String   identifier,
feedIdentifier,
apiKey,
tagID,
titleName;
private ProcesReuest procesReuest;
public ArrayList<Integer> tempIDHolder = new ArrayList<Integer>();
public ArrayList<AllResultsItem> mAllResultsItem;
public AllResultsAdapter mAllResultsAdapter;
public ListView mListView;
private Context mContext;
private ViewFlipper mViewFlipper;
private TextView mTitleText;
private int itemsForLoad = 50;
private boolean firstRun = true;
private ProgressBar mLoadItemsIndicator;
private int visibleThreshold = 5;
private int mPage = 1;
private int previousTotal = 0;
private boolean loading = true;
private SharedPreferences mSettings;
private Editor mEdit;
private View footerView;
private int itemHolder;
@Override
public void onBackPressed() {
super.onBackPressed();
procesReuest.cancel(true);
AllResultsActivity.this.finish();
}
@Override
public void onCreate(Bundle savedInstanceState) {
this.requestWindowFeature(Window.FEATURE_NO_TITLE);
this.setContentView(R.layout.all_results_view);
super.onCreate(savedInstanceState);
getExtras();
mContext = this;
itemsForLoad = 50;
loadItems(apiKey);
initListview();
}
private void initListview() {
mAllResultsItem = new ArrayList<AllResultsItem>();
mAllResultsAdapter = new AllResultsAdapter(this, mAllResultsItem);
mListView.setAdapter(mAllResultsAdapter);
mAllResultsAdapter.notifyDataSetChanged();
}
@Override
public void bindResources() {
mLoadItemsIndicator = (ProgressBar)findViewById(R.id.all_results_view_more_items_indicator);
mListView = (ListView)findViewById(R.id.all_results_listview);
mViewFlipper = (ViewFlipper)findViewById(R.id.all_results_view_viewflipper);
mTitleText   = (TextView) findViewById(R.id.all_results_view_title_text);
mSettings   = getSharedPreferences(WBAConstants.TRACEBUZZ, MODE_PRIVATE);
mEdit       =   mSettings.edit();   
}
@Override
public void bindListeners() {
mListView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View view, int id, long arg3) {
String url = (String) view.getTag(R.string.item_url);
Intent intnt = new Intent(AllResultsActivity.this, WebviewWithControllsActivity.class); 
if(url.contains("twitter")) {
int     UQID    = (Integer)view.getTag(R.id.twitter_result_identifier);
String table    = (String)view.getTag(R.string.twitter_table);
intnt.putExtra("UQID", UQID);
intnt.putExtra("apiKey", apiKey);
intnt.putExtra("table", table);
}
View bar = (View)findViewById(R.id.all_results_title_bar);
int barHeight = bar.getHeight();
intnt.putExtra("barHeight", barHeight);
intnt.putExtra("URL", url); 
AllResultsActivity.this.startActivity(intnt);           
}
});
mListView.setOnScrollListener(new OnScrollListener() {
@Override
public void onScrollStateChanged(AbsListView view, int scrollState) {
}
@Override
public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {
Log.d("","totalItemCount = " + totalItemCount);
if (loading) {
if (totalItemCount > previousTotal) {
loading = false;
previousTotal = totalItemCount;
itemHolder = previousTotal;
} 
}
if (!loading && (totalItemCount - visibleItemCount) <= (firstVisibleItem + visibleThreshold)) {
mLoadItemsIndicator.setVisibility(View.VISIBLE);
mListView.invalidate();
mPage++;
loadItems(apiKey);
loading = true;
} else  {
}
}   
});     
}   
private void loadItems(String passedApiKey) {   
procesReuest = new ProcesReuest();
procesReuest.execute(identifier, feedIdentifier, passedApiKey);
}
public void getExtras() {
Bundle extras = getIntent().getExtras();
feedIdentifier = null;
tagID = null;
apiKey = null;
if(extras != null) {
identifier      = extras.getString("identifier");
feedIdentifier  = extras.getString("feedidentifier");
apiKey          = extras.getString("apiKey");
titleName       = extras.getString("tag_name");
tagID           = extras.getString("tag_id");
if((titleName != null) && (!titleName.equals("null"))) {
mTitleText.setText(titleName);
}
}
}
public void displayDialog() {
AlertDialog.Builder dialog = new AlertDialog.Builder(this);
dialog.setTitle("Error");
dialog.setMessage("Failed to contact server, check your Internet connection or try again later");
dialog.setNegativeButton("back", new OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
AllResultsActivity.this.finish();
}
});
dialog.show();
}
private synchronized void addSyncedItems() throws InterruptedException {
if(firstRun){
mAllResultsAdapter.setItems(mAllResultsItem);
firstRun = false;
}   
mAllResultsAdapter.notifyDataSetChanged();
mListView.invalidate();
mLoadItemsIndicator.setVisibility(View.GONE);   
}
/** Subclass for processing the ResultReqesut for the specified type **/
private class ProcesReuest extends AsyncTask<String, Void, Exception>{
Downloader downloader = new Downloader();
JSONObject result = null;
List<NameValuePair> postParams;
boolean timeOut;
@Override
protected Exception doInBackground(String... params) {
Log.d("","doInBackground " + apiKey);
try {
postParams = new ArrayList<NameValuePair>(2);       
postParams.add(new BasicNameValuePair("api_key",apiKey));
postParams.add(new BasicNameValuePair("num","100"));
postParams.add(new BasicNameValuePair("feed_id", feedIdentifier));
postParams.add(new BasicNameValuePair("page", Integer.toString(mPage)));
postParams.add(new BasicNameValuePair("order", "time DESC"));
postParams.add(new BasicNameValuePair("tag_id", tagID));
postParams.add(new BasicNameValuePair("format", "json"));
Log.d("","postParams = " + postParams);
downloadJSON(postParams);
proccesJSON();
} catch (JSONException e) {
//TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
//TODO Auto-generated catch block
e.printStackTrace();
}
return null;
}
@Override
protected void onPostExecute(Exception exception) {
Log.d("","onPostExecute");
try {
addSyncedItems();
} catch (InterruptedException e) {
//TODO Auto-generated catch block
e.printStackTrace();
}
try {
if(!result.getJSONObject("results").getString("result_count").equals("0")){
mViewFlipper.setDisplayedChild(2);
} else {
Log.d("","View 3");
mViewFlipper.setDisplayedChild(2);
}
} catch (Exception e) {
//TODO: handle exception
}
}
private void proccesJSON() throws JSONException, IOException {
String UIDHolderString = mSettings.getString(WBAConstants.UIDHOLDER, "empty");
JSONArray arrayHolder = null;
if(UIDHolderString.equals("empty")){
arrayHolder = new JSONArray();
} else {
arrayHolder = new JSONArray(UIDHolderString);       
}
if(result != null){
JSONObject feedResults = result.getJSONObject("results").getJSONObject("result");
Log.d("","" + feedResults);
String uniqueItemID = null;
Iterator<String> feedResultIter = feedResults.keys();
while (feedResultIter.hasNext()) {
uniqueItemID = (String) feedResultIter.next();  
Log.d("","" + uniqueItemID);
if(!uniqueItemID.equals("metaresult")) {
AllResultsItem item = new AllResultsItem();
if(UIDHolderString.contains(uniqueItemID)) {
item.setNewFeed(0);
} else {
item.setNewFeed(1);
arrayHolder.put(uniqueItemID);
}
JSONObject resultItem = feedResults.getJSONObject(uniqueItemID);        
String typeFeed = resultItem.getString("type");
if(!typeFeed.contains("twitter") && typeFeed != null){      
if(resultItem.has("tags") && resultItem.getString("tags")!= null) {
JSONObject tags = resultItem.getJSONObject("tags");     
Iterator<String> tagIter = tags.keys();
ArrayList<String> tagHolder = new ArrayList<String>();
while (tagIter.hasNext()) {
String tagID = (String) tagIter.next();
String tagName = tags.getString(tagID);
tagHolder.add(tagName);         
}                   
item.setTagNames(tagHolder.toString());
}
item.setType(typeFeed);
if((resultItem.has("title")) && (!resultItem.isNull("title")) && (!resultItem.getString("title").equals("null") )) {
item.setResultTitle(resultItem.getString("title"));
} 
if(resultItem.has("unique_id")) {
item.setResultIdentifier(Integer.parseInt(resultItem.getString("unique_id")));
}
if(resultItem.has("src_link") && (resultItem.getString("src_link") != null)) {
item.setMessageURL(resultItem.getString("src_link"));
}
if(resultItem.has("date_time")) {
item.setDate( resultItem.getString("date_time"));
}
if(resultItem.has("description")) {
item.setMessage(resultItem.getString("description"));
}
} else if(resultItem.getString("type").contains("twitter")){
Icon icon = new Icon();                                     
if((resultItem.has("title")) && (!resultItem.isNull("title")) && (!resultItem.getString("title").equals("null"))) {
item.setUserTwitter(resultItem.getString("title"));
} 
if(resultItem.has("unique_id")) {
item.setIdentifier(Integer.parseInt(resultItem.getString("unique_id")));
}
if(resultItem.has("src_link") && (resultItem.getString("src_link") != null)) {
item.setMessageURL(resultItem.getString("src_link"));
}
if(resultItem.has("date_time")) {                           
item.setDate(resultItem.getString("date_time"));
}
if(resultItem.has("description")) {
item.setMessageText(resultItem.getString("description"));
}
if(resultItem.has("image_link")) {
if(!resultItem.has("null")){
icon.setImageURL(resultItem.getString("image_link"));
}                   
}       
if(resultItem.has("table")) {
item.setTable(resultItem.getString("table"));
}       
item.setType(typeFeed);
item.addIconsObject(icon);
if(resultItem.has("tags") && resultItem.getString("tags")!= null) {
JSONObject tags = resultItem.getJSONObject("tags");
Iterator<String> tagIter = tags.keys();
ArrayList<String> tagHolder = new ArrayList<String>();
while (tagIter.hasNext()) {
String tagID = (String) tagIter.next();
String tagName = tags.getString(tagID);
tagHolder.add(tagName);
}
item.setTagNames(tagHolder.toString());
}
}
mAllResultsItem.add(item);
}
}
mEdit.putString(WBAConstants.UIDHOLDER, arrayHolder.toString());
mEdit.commit();
}
}
public boolean downloadJSON(List<NameValuePair>postParams) {
try {
result = downloader.getJSONFromURL("http://www.example.com/webservice/get_feed_results.php", true, postParams);
} catch (ClientProtocolException e) {
//TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
//TODO Auto-generated catch block
e.printStackTrace();
} catch (JSONException e) {
//TODO Auto-generated catch block
e.printStackTrace();
}
return true;
}
}
}

La raison de la Synchronisées méthode était juste pour essayer d'obtenir la carte et de la liste de la mise à jour à la même heure.

OriginalL'auteur Maikel Bollemeijer | 2012-03-19