library/ui/src/main/java/com/google/android/exoplayer2/ui/DebugTextViewHelper.java
public final void start() {
    if (started) {
      return;
    }
    started = true;
    player.addListener(this);
    updateAndPost();
  }
/**
   * Starts periodic updates of the {@link TextView}. Must be called from the application's main
   * thread.
   */
Starts periodic updates of the  TextView. Must be called from the application's main
thread.
Starts periodic updates of the TextView . Must be called from the application ' s main thread .
public final void start() {
    if (started) {
      return;
    }
    started = true;
    player.addListener(this);
    updateAndPost();
  }
public final void start ( ) { if ( started ) { return ; } started = true ; player . addListener ( this ) ; updateAndPost ( ) ; }
Starts periodic updates of the {@link TextView}.
Starts periodic updates of the { @link TextView } .