solved snackbar problem

Author: jainkuniya

source-code/app/src/main/java/org/buildmlearn/toolkit/activity/TemplateEditor.java

@@ -370,7 +370,7 @@ public boolean onOptionsItemSelected(MenuItem item) {
                 final Object object = selectedTemplate.deleteItem(TemplateEditor.this, selectedPosition);
                 selectedPosition = -1;
                 restoreSelectedView();
-                Snackbar.make(getWindow().getDecorView(),
+                Snackbar.make(findViewById(R.id.relative_layout),
                         R.string.snackbar_deleted_message,Snackbar.LENGTH_LONG)
                         .setAction(R.string.snackbar_undo, new View.OnClickListener() {
                     @Override

source-code/app/src/main/res/layout/activity_template_editor.xml

@@ -1,6 +1,7 @@
 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:fab="http://schemas.android.com/apk/res-auto"
     xmlns:tools="http://schemas.android.com/tools"
+    android:id="@+id/relative_layout"
     android:layout_width="match_parent"
     android:layout_height="match_parent"
     tools:context="org.buildmlearn.toolkit.activity.TemplateEditor">