android中很多情况下我们需要会使用多个fragment，我们这时就需要一个showFragment来实现fragment之间的切换

来源：互联网发布：unity5.3.4f1破解mac 编辑：程序博客网时间：2024/04/27 09:42

主要功能代码如下：

/*
   * 跳转到某个fragment，并保存fragment的状态
   */
   private void showFragment(int id) {
       FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
       hindFragment(transaction);

       switch (id) {
       case 1:
           if (fragmentMain != null) {
               transaction.show(fragmentMain);
           } else {
               fragmentMain = new MainFragment();
               transaction.add(R.id.linear_layout_home_fragment, fragmentMain);
           }
           break;
       case 2:
           if (fragmentLookCar != null) {
               transaction.show(fragmentLookCar);
           } else {
               fragmentLookCar = new LookCarFragment();
               transaction.add(R.id.linear_layout_home_fragment,
                       fragmentLookCar);
           }
           break;
       case 3:
           if (fragmentShangCheng != null) {
               transaction.show(fragmentShangCheng);
           } else {
               fragmentShangCheng = new ShangChengFragment();
               transaction.add(R.id.linear_layout_home_fragment,
                       fragmentShangCheng);
           }
           break;
       case 4:
           if (personalCenterFragment != null) {
               transaction.show(personalCenterFragment);
           } else {
               personalCenterFragment = new PersonalCenterFragment();
               transaction.add(R.id.linear_layout_home_fragment,
                       personalCenterFragment);
           }
           break;
       }
       transaction.commit();
   }

   /*
   * 隐藏fragment
   */
   private void hindFragment(FragmentTransaction transaction) {
       if (fragmentMain != null) {
           transaction.hide(fragmentMain);
       }
       if (fragmentLookCar != null) {
           transaction.hide(fragmentLookCar);
       }
       if (fragmentShangCheng != null) {
           transaction.hide(fragmentShangCheng);
       }
       if (personalCenterFragment != null) {
           transaction.hide(personalCenterFragment);
       }
   }

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