Added the networking task cancellation/destruction to a background th…

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PrebidMobile/PrebidMobile-core/src/main/java/org/prebid/mobile/rendering/networking/modelcontrollers/Requester.java

@@ -19,6 +19,7 @@
 import android.content.Context;
 import android.content.res.Resources;
 import android.os.AsyncTask;
+import android.os.Looper;
 
 import org.prebid.mobile.LogUtil;
 import org.prebid.mobile.api.exceptions.AdException;
@@ -82,10 +83,32 @@ public abstract class Requester {
 
  public abstract void startAdRequest();
 
+ /**
+ * This Async task is needed because the networkTask needs to be cancelled / destroyed
+ * on a background thread or it throws a NetworkOnMainThreadException
+ **/
+ private static class DestroyNetworkTaskAsyncTask extends AsyncTask<BaseNetworkTask, Void, Void> {
+
+ @Override
+ protected Void doInBackground(BaseNetworkTask... baseNetworkTasks) {
+ if (baseNetworkTasks.length > 0) {
+ if (baseNetworkTasks[0] != null) {
+ baseNetworkTasks[0].cancel(true);
+ baseNetworkTasks[0].destroy();
+ }
+ }
+ return null;
+ }
+ }
+
  public void destroy() {
  if (networkTask != null) {
- networkTask.cancel(true);
- networkTask.destroy();
+ if(Looper.getMainLooper().getThread() == Thread.currentThread()) {
+ new DestroyNetworkTaskAsyncTask().execute(networkTask);
+ } else {
+ networkTask.cancel(true);
+ networkTask.destroy();
+ }
  }
  networkTask = null;
  if (fetchAdIdInfoTask != null) {