Dismiss hint popup when touched outside

Clover/app/src/main/java/org/floens/chan/ui/helper/HintPopup.java

@@ -1,6 +1,8 @@
 package org.floens.chan.ui.helper;
 
 import android.content.Context;
+import android.graphics.Color;
+import android.graphics.drawable.ColorDrawable;
 import android.view.LayoutInflater;
 import android.view.View;
 import android.view.ViewGroup;
@@ -29,6 +31,8 @@ public class HintPopup {
         textView.setText(text);
 
         final PopupWindow popupWindow = new PopupWindow(popupView, ViewGroup.LayoutParams.WRAP_CONTENT, ViewGroup.LayoutParams.WRAP_CONTENT);
+        popupWindow.setOutsideTouchable(true);
+        popupWindow.setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
 
         popupView.setOnClickListener(new View.OnClickListener() {
             @Override