Implemented long click copy topic url

app/src/main/java/gr/thmmy/mthmmy/activities/topic/TopicActivity.java

@@ -2,7 +2,10 @@ package gr.thmmy.mthmmy.activities.topic;
 
 import android.annotation.SuppressLint;
 import android.app.NotificationManager;
+import android.content.ClipData;
+import android.content.ClipboardManager;
 import android.content.Context;
+import android.content.DialogInterface;
 import android.content.Intent;
 import android.content.SharedPreferences;
 import android.graphics.Rect;
@@ -162,6 +165,7 @@ public class TopicActivity extends BaseActivity implements TopicAdapter.OnPostFo
         toolbarTitle.setMarqueeRepeatLimit(-1);
         toolbarTitle.setText(topicTitle);
         toolbarTitle.setSelected(true);
+        this.setToolbarOnLongClickListener(topicPageUrl);
         setSupportActionBar(toolbar);
         if (getSupportActionBar() != null) {
             getSupportActionBar().setDisplayHomeAsUpEnabled(true);
@@ -793,4 +797,59 @@ public class TopicActivity extends BaseActivity implements TopicAdapter.OnPostFo
             }
         });
     }
+
+
+
+    /**This method sets a long click listener on the title of the topic. Once the
+     * listener gets triggered, it copies the link url of the topic in the clipboard.
+     * This method is getting called on the onCreate() of the TopicActivity*/
+    void setToolbarOnLongClickListener(String url)
+    {
+
+        toolbar.setOnLongClickListener(new View.OnLongClickListener() {
+            @Override
+            public boolean onLongClick(View view) {
+
+
+                //TRy to set the clipboard text.
+                try
+                {
+                    //Create a ClipboardManager.
+                    ClipboardManager clipboard = (ClipboardManager) getSystemService(CLIPBOARD_SERVICE);
+
+                    clipboard.setPrimaryClip(ClipData.newPlainText(BUNDLE_TOPIC_URL, url));
+
+                    //Make a toast to inform the user that the url was copied.
+                    Toast.makeText(
+                            TopicActivity.this,
+                            TopicActivity.this.getString(R.string.url_copied_msg),
+                            Toast.LENGTH_SHORT).show();
+                }
+
+
+                //Something happened. Probably the device does not support this.
+                catch (NullPointerException e)
+                {
+                    //Create a new dialog builder.
+                    AlertDialog.Builder builder = new AlertDialog.Builder(TopicActivity.this);
+
+                    //Set UP the alert dialog.
+                    builder.setMessage(getString(R.string.url_copy_does_not_work_msg));
+                    builder.setTitle("ERROR");
+                    builder.setPositiveButton("OK", new DialogInterface.OnClickListener() {
+                        @Override
+                        public void onClick(DialogInterface dialogInterface, int i) {
+                            dialogInterface.dismiss();
+                        }
+                    });
+
+                    //Create and show the alert dialog.
+                    AlertDialog dialog = builder.create();
+                    dialog.show();
+                }
+
+                return true;
+            }
+        });
+    }
 }

app/src/main/res/values/strings.xml

@@ -231,4 +231,6 @@
     <!-- New topic activity -->
     <string name="new_topic_toolbar">New topic</string>
     <string name="create_topic">Create topic</string>
+    <string name="url_copied_msg">Url copied</string>
+    <string name="url_copy_does_not_work_msg">There was a problem copying the url. Probably your device does not support this functionality</string>
 </resources>