android 实现ScrollView自动滚动

private void searchResultShow() {            TextView textView = new TextView(AFSearchActivity.this);               textView.setText("Text View ");               LinearLayout.LayoutParams p = new LinearLayout.LayoutParams(                       LinearLayout.LayoutParams.MATCH_PARENT,                       LinearLayout.LayoutParams.WRAP_CONTENT               );               textView.setPadding(30, 15, 0, 15);            textView.setTextSize(30);            textView.setTextColor(Color.WHITE);            //增加一个TextView到线性布局中           layout.addView(textView, p);                           ImageView imageView = new ImageView(AFSearchActivity.this);             imageView.setImageResource(R.drawable.im_dottend_line);                      //增加一个ImageView到线性布局中            layout.addView(imageView, p);               if(sName == null || sName.equals("")){                textView.setText("-");            }else{                textView.setText(sName);                sName = "";                 mHandler.post(mScrollToBottom);               }        }        private Runnable mScrollToBottom = new Runnable()         {               @Override              public void run()            {                   int off = layout.getMeasuredHeight() - nameScroll.getHeight();                   if (off > 0)                 {                       nameScroll.scrollTo(0, off);                   }                                      }           };