I am working app in which, I have to show custom list of available wifi. for this I am getting List inside overrided method:
public void onScanComplete(List<ScanResult> results) {}
and from here, I call setAdapter. Once List is showing it's scrolling fine without any crash but when I click any list item for connecting that wifi provide password back to list following method is called:-
private int counter;
@Override
public void onConnectivityChange(final NetworkInfo info) {
int len = mItems.size();
for (int index = 0; index < len; index++) {
WifiListData item = mItems.get(index);
item.setIsConnected(false); // setting each to not connected
item.setState(null);
if (item.getSSID()!=null&&item.getSSID().equals(info.getExtraInfo().replace("\"", ""))) {
item.setIsConnected(info.isConnected());
item.setState(getStatusInSimpleEnglish(info.getDetailedState()));
}
}
if (info.isConnected()) {
mTimerHandler.removeCallbacks(mTimerRunnable);
}
if (info.isConnected() && info.getExtraInfo().equals(String.format("\"%s\"", mSelectedSSID))) {
DebugLogger.d(TAG, "Connected to " + info.getExtraInfo());
dismissProgressDialog();
mSelectedSSID = "";
}
if (info.getState() == NetworkInfo.State.CONNECTED) {
Collections.sort(mItems, new RssiComparator());
putConnectedOnTop();
Handler handler = new Handler();
handler.postDelayed(new Runnable() {
@Override
public void run() {
connectTOSignIn();
}
},1000);
}
if (info.getState() == NetworkInfo.State.CONNECTING) {
Collections.sort(mItems, new RssiComparator());
putConnectedOnTop();
}
notifyAdapter();
}
When I start scrolling app going to crash stack trace is as:-
[null]=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. Make sure your adapter calls notifyDataSetChanged() when its content changes. [in ListView(2131624395, class android.widget.ListView) with Adapter(class android.widget.HeaderViewListAdapter)]
at android.widget.ListView.layoutChildren(ListView.java:1555)
at android.widget.AbsListView.onTouchMove(AbsListView.java:3549)
at android.widget.AbsListView.onTouchEvent(AbsListView.java:3424)
at android.view.View.dispatchTouchEvent(View.java:7706)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2210)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1945)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
at android.view.ViewGroup.dispatchTransformedTouchEvent(ViewGroup.java:2216)
at android.view.ViewGroup.dispatchTouchEvent(ViewGroup.java:1959)
at com.android.internal.policy.impl.PhoneWindow$DecorView.superDispatchTouchEvent(PhoneWindow.java:2069)
at com.android.internal.policy.impl.PhoneWindow.superDispatchTouchEvent(PhoneWindow.java:1516)
at android.app.Activity.dispatchTouchEvent(Activity.java:2485)
at com.android.internal.policy.impl.PhoneWindow$DecorView.dispatchTouchEvent(PhoneWindow.java:2017)
at android.view.View.dispatchPointerEvent(View.java:7886)
at android.view.ViewRootImpl$ViewPostImeInputStage.processPointerEvent(ViewRootImpl.java:3956)
at android.view.ViewRootImpl$ViewPostImeInputStage.onProcess(ViewRootImpl.java:3835)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3401)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3451)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3420)
at android.view.ViewRootImpl$AsyncInputStage.forward(ViewRootImpl.java:3527)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3428)
at android.view.ViewRootImpl$AsyncInputStage.apply(ViewRootImpl.java:3584)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3401)
at android.view.ViewRootImpl$InputStage.onDeliverToNext(ViewRootImpl.java:3451)
at android.view.ViewRootImpl$InputStage.forward(ViewRootImpl.java:3420)
at android.view.ViewRootImpl$InputStage.apply(ViewRootImpl.java:3428)
at android.view.ViewRootImpl$InputStage.deliver(ViewRootImpl.java:3401)
at android.view.ViewRootImpl.deliverInputEvent(ViewRootImpl.java:5604)
at android.view.ViewRootImpl.doProcessInputEvents(ViewRootImpl.java:5584)
at android.view.ViewRootImpl.enqueueInputEvent(ViewRootImpl.java:5555)
at android.view.ViewRootImpl$WindowInputEventReceiver.onInputEvent(ViewRootImpl.java:5684)
at android.view.InputEventReceiver.dispatchInputEvent(InputEventReceiver.java:185)
at android.os.MessageQueue.nativePollOnce(Native Method)
at android.os.MessageQueue.next(MessageQueue.java:138)
at android.os.Looper.loop(Looper.java:123)
at android.app.ActivityThread.main(ActivityThread.java:5017)
at java.lang.reflect.Method.invokeNative(Native Method)
at java.lang.reflect.Method.invoke(Method.java:515)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:788)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:604)
at dalvik.system.NativeStart.main(Native Method)
I make notification inside UI thread as:-
private void notifyAdapter() {
mActivity.runOnUiThread(new Runnable() {
@Override
public void run() {
homeWifiListAdapter.notifyDataSetChanged();
}
});
}
Any suggestion is highly appreciated, thanks.
