Method addPrimaryClipChangedListener() in ClipboardManager.java

ClipboardManager.java

@SystemService(Context.CLIPBOARD_SERVICE)
public class ClipboardManager extends android.text.ClipboardManager {
  
  // Code
  
  public void addPrimaryClipChangedListener(OnPrimaryClipChangedListener what) {
        // Code
        mService.addPrimaryClipChangedListener(
                mPrimaryClipChangedServiceListener, mContext.getOpPackageName(),
                mContext.getUserId());
        // Code
        mPrimaryClipChangedListeners.add(what);
      }
  }
  
  // Code
}