ViewPager实现Fragment切换效果

/**
 * Viewpager适配
 * 定义：ViewPagerAdapter adapter1;

 * 1、定义list
 * 2、把碎片放到List中
 * 3、适配Adapter
 * 4、设置碎片第一次显示为第一位置
 */
List<Fragment> list = new ArrayList<Fragment>();
list.add(new weather_fragment_1()); /*  weather_fragment_1，weather_fragment_2为两个碎片  */

list.add(new weather_fragment_2());
adapter1 = new ViewPagerAdapter(getSupportFragmentManager(),list);
weather_vp.setAdapter(adapter1);
weather_vp.setCurrentItem(0);