每当我关闭任何片段时，我都会遇到未知的内存泄漏

Question

我正在制作博客应用程序，每当我关闭任何片段时都会发生内存泄漏....我试图找到答案，有人说要取消你对 onDestroyView 或 onDestroy 的视图引用（我都试过了，但它没有't work) 而不是我只是创建了没有任何视图的空白片段（只有蓝色背景），即使我正在关闭 BlankFragment ，我仍然会遇到同样的内存泄漏......下面是我用来添加空白片段的代码

 Fragment blankFragment = new BlankFragment();
 FragmentTransaction transaction = getActivity().getSupportFragmentManager().beginTransaction();
 transaction.hide(userProfileFragment);     //hiding userProfileFragment which is current fragment
 transaction.add(R.id.frame_container, blankFragment,"blank");
 transaction.addToBackStack(null);
 transaction.commit();

在我关闭甚至没有任何视图的 blankFragment 之后..我在 Leak Canary 中收到以下内存泄漏警告

┬───
│ GC Root: System class
│
├─ leakcanary.internal.InternalLeakCanary class
│    Leaking: NO (MainActivity↓ is not leaking and a class is never leaking)
│    ↓ static InternalLeakCanary.resumedActivity
├─ MainActivity instance
│    Leaking: NO (HomeFragment↓ is not leaking and Activity#mDestroyed is false)
│    ↓ MainActivity.startingFragment
├─ HomeFragment instance
│    Leaking: NO (UserProfile_Fragment↓ is not leaking and Fragment#mFragmentManager is not        null)
│    Fragment.mTag=home
│    ↓ HomeFragment.mFragmentManager
├─ androidx.fragment.app.FragmentManagerImpl instance
│    Leaking: NO (UserProfile_Fragment↓ is not leaking)
│    ↓ FragmentManagerImpl.mAdded
├─ java.util.ArrayList instance
│    Leaking: NO (UserProfile_Fragment↓ is not leaking)
│    ↓ ArrayList.elementData
├─ java.lang.Object[] array
│    Leaking: NO (UserProfile_Fragment↓ is not leaking)
│    ↓ Object[].[3]
├─ UserProfile_Fragment instance
│    Leaking: NO (Fragment#mFragmentManager is not null)
│    Fragment.mTag=user
│    ↓ UserProfile_Fragment.transaction
│                           ~~~~~~~~~~~
├─ androidx.fragment.app.BackStackRecord instance
│    Leaking: UNKNOWN
│    ↓ BackStackRecord.mOps
│                      ~~~~
├─ java.util.ArrayList instance
│    Leaking: UNKNOWN
│    ↓ ArrayList.elementData
│                ~~~~~~~~~~~
├─ java.lang.Object[] array
│    Leaking: UNKNOWN
│    ↓ Object[].[1]
│               ~~~
├─ androidx.fragment.app.FragmentTransaction$Op instance
│    Leaking: UNKNOWN
│    ↓ FragmentTransaction$Op.mFragment
│                             ~~~~~~~~~
╰→ BlankFragment instance Leaking: YES (ObjectWatcher was watching this because BlankFragment   received Fragment#onDestroy() callback and Fragment#mFragmentManager is null)

Answer 1

UserProfile_Fragment.transaction 是泄漏的可能原因，您不应将片段事务保存在内存中，因为它会保留 BlankFragment。

每当我关闭任何片段时，我都会遇到未知的内存泄漏

I am getting unknown memory leak whenever I am closing any fragment

java

android

android-fragments

memory-leaks

leakcanary