Android--Fragment懒加载

private Fragment tempFragment;


private BaseFragemt getFragment(int position) {

        if(fragments!=null&&fragments.size()>0){
            BaseFragemt baseFragemt=fragments.get(position);
            return baseFragemt;
        }
        return null;
    }


    private void switchFragment(Fragment fromFragment, BaseFragemt nextFragemt) {
        if(tempFragment!=nextFragemt){
            tempFragment=nextFragemt;
            if(nextFragemt!=null){
                FragmentTransaction transaction=fragmentManager.beginTransaction();
                if(!nextFragemt.isAdded()){
                    if(fromFragment!=null) {
                        transaction.hide(fromFragment);
                    }
                    transaction.add(R.id.main_page_container, nextFragemt).commit();
                }else {
                    if(fromFragment!=null){
                        transaction.hide(fromFragment);
                    }
                    transaction.show(nextFragemt).commit();
                }

            }
        }