made error handling work a bit

app/src/main/java/org/schabi/newpipe/ActivityCommunicator.java

@@ -22,10 +22,12 @@ package org.schabi.newpipe;
 
 import android.graphics.Bitmap;
 
+import java.util.List;
+
 /**
  * Singleton:
  * Used to send data between certain Activity/Services within the same process.
- * This can be considered as hack inside the Android universe. **/
+ * This can be considered as an ugly hack inside the Android universe. **/
 public class ActivityCommunicator {
 
     private static ActivityCommunicator activityCommunicator = null;
@@ -39,4 +41,8 @@ public class ActivityCommunicator {
 
     // Thumbnail send from VideoItemDetailFragment to BackgroundPlayer
     public volatile Bitmap backgroundPlayerThumbnail;
+
+    // Sent from any activity to ErrorActivity.
+    public volatile List<Exception> errorList;
+    public volatile Class returnActivity;
 }

app/src/main/java/org/schabi/newpipe/VideoItemDetailFragment.java

@@ -46,6 +46,7 @@ import com.nostra13.universalimageloader.core.listener.ImageLoadingListener;
 import java.util.ArrayList;
 import java.util.Vector;
 
+import org.schabi.newpipe.errorhandling.ErrorActivity;
 import org.schabi.newpipe.extractor.MediaFormat;
 import org.schabi.newpipe.extractor.ParsingException;
 import org.schabi.newpipe.extractor.ServiceList;
@@ -166,10 +167,23 @@ public class VideoItemDetailFragment extends Fragment {
                 });
                 e.printStackTrace();
             } catch (ParsingException e) {
-                postNewErrorToast(h, e.getMessage());
+                ErrorActivity.reportError(h, getActivity(), e, 0, VideoItemListActivity.class);
+                h.post(new Runnable() {
+                    @Override
+                    public void run() {
+                        getActivity().finish();
+                    }
+                });
                 e.printStackTrace();
             } catch(Exception e) {
-                postNewErrorToast(h, R.string.general_error);
+                ErrorActivity.reportError(h, getActivity(), e,
+                        R.string.general_error, VideoItemListActivity.class);
+                h.post(new Runnable() {
+                    @Override
+                    public void run() {
+                        getActivity().finish();
+                    }
+                });
                 e.printStackTrace();
             } finally {
                 if(videoInfo != null &&
@@ -178,6 +192,9 @@ public class VideoItemDetailFragment extends Fragment {
                     for(Exception e : videoInfo.errors) {
                         e.printStackTrace();
                     }
+                    //todo: do not call directly ask the user if it should be reported
+                    ErrorActivity.reportError(h, getActivity(),
+                            videoInfo.errors, 0, VideoItemDetailActivity.class);
                 }
             }
         }

app/src/main/java/org/schabi/newpipe/VideoItemListActivity.java

@@ -241,12 +241,6 @@ public class VideoItemListActivity extends AppCompatActivity
         }
 
         PreferenceManager.setDefaultValues(this, R.xml.settings, false);
-
-
-        /* this is for debuging only if this is still pressent in master branch kill the programmer */
-        startActivity(new Intent(this, ErrorActivity.class));
-
-        //-------------------------------------------------------------------------
     }
 
     @Override

app/src/main/java/org/schabi/newpipe/errorhandling/ErrorActivity.java

@@ -1,15 +1,125 @@
 package org.schabi.newpipe.errorhandling;
 
+
+import android.app.Activity;
+import android.content.Context;
+import android.content.Intent;
+import android.support.v4.app.NavUtils;
 import android.support.v7.app.AppCompatActivity;
 import android.os.Bundle;
+import android.os.Handler;
+import android.view.MenuItem;
+import android.widget.TextView;
 
+import org.apache.commons.lang.exception.ExceptionUtils;
+import org.schabi.newpipe.ActivityCommunicator;
 import org.schabi.newpipe.R;
+import org.schabi.newpipe.VideoItemListActivity;
+
+import java.util.List;
+import java.util.Vector;
 
 public class ErrorActivity extends AppCompatActivity {
 
+    private List<Exception> errorList;
+    private Class returnActivity;
+
+    // views
+    private TextView errorView;
+
+    public static void reportError(Context context, List<Exception> el, int message, Class returnAcitivty) {
+        ActivityCommunicator ac = ActivityCommunicator.getCommunicator();
+        ac.errorList = el;
+        ac.returnActivity = returnAcitivty;
+        Intent intent = new Intent(context, ErrorActivity.class);
+        context.startActivity(intent);
+    }
+
+    public static void reportError(Context context, Exception e, int message, Class returnAcitivty) {
+        List<Exception> el = new Vector<>();
+        el.add(e);
+        reportError(context, el, message, returnAcitivty);
+    }
+
+    // async call
+    public static void reportError(Handler handler, final Context context,
+                                   final Exception e, final int message, final Class returnAcitivty) {
+        List<Exception> el = new Vector<>();
+        el.add(e);
+        reportError(handler, context, el, message, returnAcitivty);
+    }
+
+    // async call
+    public static void reportError(Handler handler, final Context context,
+                                   final List<Exception> el, final int message, final Class returnAcitivty) {
+        handler.post(new Runnable() {
+            @Override
+            public void run() {
+                reportError(context, el, message, returnAcitivty);
+            }
+        });
+    }
+
     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.activity_error);
+        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+
+        ActivityCommunicator ac = ActivityCommunicator.getCommunicator();
+        errorList = ac.errorList;
+        returnActivity = ac.returnActivity;
+
+        errorView = (TextView) findViewById(R.id.errorView);
+        errorView.setText(formErrorText(errorList));
+
+        //importand add gurumeditaion
+        addGuruMeditaion();
+    }
+
+    @Override
+    public boolean onOptionsItemSelected(MenuItem item) {
+        int id = item.getItemId();
+        if (id == android.R.id.home) {
+            goToReturnActivity();
+            return true;
+        }
+        return false;
+    }
+
+    private String formErrorText(List<Exception> el) {
+        String text = "";
+        for(Exception e : el) {
+            text += "-------------------------------------\n"
+                    + ExceptionUtils.getStackTrace(e);
+        }
+        text += "-------------------------------------";
+        return text;
+    }
+
+    private void goToReturnActivity() {
+        Intent intent;
+        if(returnActivity != null &&
+                returnActivity.isAssignableFrom(Activity.class)) {
+            intent = new Intent(this, returnActivity);
+        } else {
+            intent = new Intent(this, VideoItemListActivity.class);
+        }
+        intent.addFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
+        NavUtils.navigateUpTo(this, intent);
+    }
+
+    private void addGuruMeditaion() {
+        //just an easter egg
+        TextView sorryView = (TextView) findViewById(R.id.errorSorryView);
+        String text = sorryView.getText().toString();
+        text += "\n" + getString(R.string.guru_meditation);
+        sorryView.setText(text);
+    }
+
+    @Override
+    public void onBackPressed() {
+        super.onBackPressed();
+        goToReturnActivity();
     }
 }