Leakcanary显示片段泄漏有AppCompatActivity和FragmentStatePagerAdapter
Leakcanary显示片段泄漏有AppCompatActivity和FragmentStatePagerAdapter
提问于 2015-09-23 20:57:31
这个问题我已经有一段时间了，我真的不知道还能尝试什么。我在我的项目中加入了Leakcanary，这样我就可以强迫自己学习android“正确的方式”，而不会发现导致内存泄漏的模式。我正在构建一个应用程序，我已经剥离了它很多，我仍然看到这个漏洞正在发生。
我有一个活动，里面有一个查看器，并实例化了10个片段。如果我打开设备，似乎一切都很好，直到我按下“Home”键，才会发现以下内存泄漏：
D/LeakCanary﹕ In com.doesnthaveadomain.leo.calendartracker:1.0:1.
D/LeakCanary﹕ * com.doesnthaveadomain.leo.calendartracker.MyFragment has leaked:
D/LeakCanary﹕ * GC ROOT static android.view.WindowManagerGlobal.sDefaultWindowManager
D/LeakCanary﹕ * references android.view.WindowManagerGlobal.mRoots
D/LeakCanary﹕ * references java.util.ArrayList.array
D/LeakCanary﹕ * references array java.lang.Object[].[0]
D/LeakCanary﹕ * references android.view.ViewRootImpl.mInvalidateOnAnimationRunnable
D/LeakCanary﹕ * references android.view.ViewRootImpl$InvalidateOnAnimationRunnable.mViews
D/LeakCanary﹕ * references java.util.ArrayList.array
D/LeakCanary﹕ * references array java.lang.Object[].[0]
D/LeakCanary﹕ * references android.support.v4.view.ViewPager.mAdapter
D/LeakCanary﹕ * references com.doesnthaveadomain.leo.calendartracker.MyAdapter.mCurrentPrimaryItem
D/LeakCanary﹕ * leaks com.doesnthaveadomain.leo.calendartracker.MyFragment instanceMainActivity：
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentStatePagerAdapter;
import android.support.v4.view.ViewPager;
import android.support.v7.app.AppCompatActivity;
import java.lang.ref.WeakReference;
public class MainActivity extends AppCompatActivity {
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ViewPager mViewPager = (ViewPager) findViewById(R.id.viewpager);
MyAdapter myAdapter = new MyAdapter(getSupportFragmentManager(), this);
mViewPager.setAdapter(myAdapter);
mViewPager.setCurrentItem(5);
}
}
class MyAdapter extends FragmentStatePagerAdapter {
private int mNumberOfViews;
private final WeakReference<AppCompatActivity> mActivityWeakRef;
public MyAdapter(FragmentManager fm,
AppCompatActivity activity) {
super(fm);
mActivityWeakRef = new WeakReference<AppCompatActivity>(activity);
mNumberOfViews = 10;
}
@Override
public Fragment getItem(int position) {
MyFragment myFragment = new MyFragment();
AppCompatActivity activity = mActivityWeakRef.get();
if (activity != null) {
MyApp.getRefWatcher(mActivityWeakRef.get()).watch(myFragment);
}
return myFragment;
}
@Override
public int getCount() {
return mNumberOfViews;
}
}MainActivity布局：
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
xmlns:android="http://schemas.android.com/apk/res/android">
<android.support.design.widget.AppBarLayout
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android"
android:id="@+id/toolbar_appbar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true" >
<android.support.v7.widget.Toolbar
android:id="@+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:theme="@style/AppTheme.Toolbar"
app:popupTheme="@style/AppTheme.Toolbar.Popup">
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="@+id/viewpager"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</LinearLayout>碎片：
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
/**
* A placeholder fragment containing a simple view.
*/
public class MyFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
return inflater.inflate(R.layout.fragment_test, container, false);
}
}片段布局：
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingLeft="@dimen/activity_vertical_margin"
android:paddingStart="@dimen/activity_vertical_margin"
android:paddingRight="@dimen/activity_vertical_margin"
android:paddingEnd="@dimen/activity_vertical_margin"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:android="http://schemas.android.com/apk/res/android">
</LinearLayout>回答 1
Stack Overflow用户
回答已采纳
发布于 2015-10-02 11:25:40
与我的另一个问题一样，我在错误的时间初始化了ref观察者，而不是在破坏上创建片段：https://stackoverflow.com/a/32881096/5278339。
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/32749332
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