最后一小节其实真的一行代码就行了，效果是一样的
@Override
public void onPageScrolled(int pos, float posOffset, int posOffsetPex) {
// TODO Auto-generated method stub
Log.e("TAG", pos + "," + posOffset + "," + posOffsetPex);
LinearLayout.LayoutParams lp = (android.widget.LinearLayout.LayoutParams)
mTablineIv.getLayoutParams();
lp.leftMargin = (int) ((pos+posOffset) * mTablineLen);
mTablineIv.setLayoutParams(lp);
}
