fix:添加string提示语

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

@@ -133,6 +133,8 @@
     <string name="faq_2_text">MMS size is limited by carriers, you can try setting a smaller limit in the app settings.</string>
     <string name="faq_3_title">Does the app support scheduled messages?</string>
     <string name="faq_3_text">Yes, you can schedule messages to be sent in the future by long pressing the Send button and picking the desired date and time.</string>
+
+    <string name="new_tips_notif">您收到一条新的消息！</string>
     <!--
         Haven't found some strings? There's more at
         https://github.com/SimpleMobileTools/Simple-Commons/tree/master/commons/src/main/res