title: textView scroll at first line
body: <p>i want to scroll my TextView at some portion of text that i know, and show it on top. this is my scrollView and TextView:</p>
  
  <pre><code>&lt;ScrollView   
      xmlns:android="http://schemas.android.com/apk/res/android"
      android:scrollbars="vertical"
      android:id="@+id/scroll"
      android:layout_width="match_parent"
      android:layout_height="match_parent"&gt;     
  
      &lt;TextView 
          android:id="@+id/text"
          android:layout_width="match_parent"
          android:layout_height="wrap_content"
          android:padding="16dp"/&gt;  
  &lt;/ScrollView&gt;
  </code></pre>
  
  <p>My text is an array of strings:</p>
  
  <pre><code>ScrollView scroll= (ScrollView) getActivity().findViewById(R.id.scroll);
  TextView text = (TextView) getActivity().findViewById(R.id.text);
  String book ="";
  for(String line: lines){
    book += line; 
  }
  text.setText(book);
  </code></pre>
  
  <p>this is when i want to scroll:</p>
  
  <pre><code>String find = book[myindex];
  int go = text.indexOf(find);
  makeScroll(go);
  </code></pre>
  
  <p>this is my runnable:</p>
  
  <pre><code>    private void makeScroll(final int go){
          scrollRegole.post(new Runnable() {
              public void run() {
                    scrollRegole.scrollTo(0, go);
              }
          });
      }
  </code></pre>
  
  <p>this is not work, why? thanks!</p>