@Override public void onResume() { super.onResume(); Util.setStatusBarColor(getActivity()); // 设置标题 TextView titleTextView = (TextView) getActivity().findViewById(R.id.header_textview); titleTextView.setText("今日新闻"); // 改变ViewPager高度按16:9 viewPager.post( new Runnable() { @Override public void run() { int width = viewPager.getWidth(); if (width == 0) return; int height = width * 9 / 16; viewPager.setLayoutParams(new RelativeLayout.LayoutParams(width, height)); } }); // 每隔5秒钟切换一张图片 startViewPagerTask(); }