Merged PR 'Implemented long click copy topic url' into develop

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 +797,31 @@ 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(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 (report to Firebase)
+            catch (NullPointerException e) {
+                Timber.e(e, "Error while trying to copy topic's url.");
+            }
+
+            return true;
+        });
+    }
 }

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

@@ -231,4 +231,5 @@
     <!-- 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>
 </resources>