Can Java.util.zip.gzipinputstream.close Cause Android.os.networkonmainthreadexception

The App works fine on the 2.2.1 and 2.2 but is causing the following error on 4.0.3 android.os.NetworkOnMainThreadException at android.os.StrictMode$AndroidBlockGuardPolicy.onNetwo

Solution 1:

It looks like you are reading something using GZIPInputStream in the onPostExecute() of async task which runs in UI thread. From 4.0 onward it is not allowed to have network connection in UI thread. I would suggest to move the GZIPInputStream reading part in the doInBackground() method.

Edit1: or you can disable the strict mode by following code:

if (android.os.Build.VERSION.SDK_INT > 9) {
StrictMode.ThreadPolicypolicy=newStrictMode.ThreadPolicy.Builder().permitAll().build();
StrictMode.setThreadPolicy(policy);
}