Fragment的简单嵌套

/**
* 初始化 页面  并且把对应的 Fragment new出来添加进一个集合里边。
*/

private void inviDates() {
if (homeFragment == null) {
homeFragment = new HomeFragment();
}
if (mineFragment == null) {
mineFragment = new MineFragment();
}
if (orderFragment == null) {
orderFragment = new OrderFragment();
}
if (fabuFragment == null) {
fabuFragment = new FabuFragment();
}
fragments = new Fragment[]{homeFragment, fabuFragment, orderFragment, mineFragment};
//初始 展示的 Fragment
inviView();

}
private void inviView() {
//判断加载的Fragment是不同的
if (currentTabIndex != index) {
FragmentTransaction trx = getSupportFragmentManager().beginTransaction();
//判断当前的Fragment有没有添加进去
if (!fragments[index].isAdded()) {
trx.add(R.id.fragment, fragments[index]);
}
//隐藏上一个

trx.hide(fragments[currentTabIndex]);
trx.show(fragments[index]).commit();

currentTabIndex = index;        }