title: I can't move a button inside a frame layout
body: <p>I have tried to move the button using graphical interface and         android:layout_alignParentLeft in XML file, anyway it does not work. My Android Studio version is 2.2.3. Have you ever had this problem?</p>
  
  <p><a href="https://i.stack.imgur.com/bg11J.png" rel="noreferrer"><img src="https://i.stack.imgur.com/bg11J.png" alt="enter image description here"></a></p>