android - 替换事务中的 fragment 后会发生什么

Question

我想知道

getFragmentManager()
                .beginTransaction()
                .replace(
                        R.id.main,
                        Fragment.instantiate(LoadingScreen.this,
                                "com.myapp.fragments.fragment1",
                                bundle)).commit();

稍后我们调用

  getFragmentManager()
                    .beginTransaction()
                    .replace(
                            R.id.main,
                            Fragment.instantiate(LoadingScreen.this,
                                    "com.myapp.fragments.fragment2",
                                    bundle)).commit();

Fragment1 View 发生了什么？它会自动销毁吗？我们是否必须对此管理任何垃圾收集？

亲切的问候

Answer 1

根据 Android Developers 上的注释:

When you remove or replace a fragment and add the transaction to the back stack, the fragment that is removed is stopped (not destroyed). If the user navigates back to restore the fragment, it restarts. If you do not add the transaction to the back stack, then the fragment is destroyed when removed or replaced.