how to create custom UI like evernote help in android -

i trying crate custom ui similar evernote android app. understand, start have first create custom textview cant create black filter.

i want make new activity(or draw view) above original activity above image.
layout has image , text overlay on it. know basic question, facing issue, beginner android development. please me understand how go this.

sorry bad english.

to make activity transprent first make transprent theme in styles.xml file in valuse folded using

    <style name="apptheme" parent="android:theme.light" />      <style name="theme.transparent" parent="android:theme">     <item name="android:windowistranslucent">true</item>     <item name="android:windowbackground">@android:color/transparent</item>     <item name="android:windowcontentoverlay">@null</item>     <item name="android:windownotitle">true</item>     <item name="android:windowisfloating">false</item>     <item name="android:backgrounddimenabled">false</item>    </style> 

then make in manifest file make theme of activty

 <activity      android:name=".help"     android:theme="@style/theme.transparent"     android:screenorientation="portrait"></activity> 

now in activty displayed on prvious activity.