膨胀类 RecyclerView 时出错
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【中文标题】膨胀类 RecyclerView 时出错【英文标题】:Error inflating class RecyclerView 【发布时间】:2015-04-13 23:07:48 【问题描述】:所以我的代码只是使用 RecyclerView 创建了一个 CardView 列表。在运行我的代码时,我不断收到一个奇怪的错误,声称我的 xml 中有错误。经过一段时间的修补后,我发现在我的布局文件中,如果我将<RecyclerView>
更改为<android.support.v7.widget.RecyclerView>
,一切都会正常工作。为什么会这样? 我的活动。
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.Menu;
import android.view.MenuItem;
import java.util.ArrayList;
public class CardListActivity extends ActionBarActivity
@Override
protected void onCreate(Bundle savedInstanceState)
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_card_list);
RecyclerView recyclerView = (RecyclerView)findViewById(R.id.cardList);
recyclerView.setHasFixedSize(true);
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(this);
linearLayoutManager.setOrientation(LinearLayoutManager.VERTICAL);
recyclerView.setLayoutManager(linearLayoutManager);
ArrayList<String> list = new ArrayList<>();
for(int i = 0; i < 20; i++) list.add("Item " + i);
CardListAdapter cardListAdapter = new CardListAdapter(list);
recyclerView.setAdapter(cardListAdapter);
我的适配器
import android.support.v7.widget.RecyclerView;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.TextView;
import java.util.List;
public class CardListAdapter extends RecyclerView.Adapter<CardListAdapter.CardListViewHolder>
private List<String> list;
public CardListAdapter(List<String> list)
this.list = list;
@Override
public CardListViewHolder onCreateViewHolder(ViewGroup viewGroup, int i)
View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.card_layout,viewGroup,false);
return new CardListViewHolder(v);
@Override
public void onBindViewHolder(CardListViewHolder cardListViewHolder, int i)
String s = list.get(i);
cardListViewHolder.title.setText(s);
@Override
public int getItemCount()
return list.size();
public static class CardListViewHolder extends RecyclerView.ViewHolder
TextView title;
public CardListViewHolder(View itemView)
super(itemView);
title = (TextView)itemView.findViewById(R.id.title);
请注意,我的布局文件将 <RecyclerView>
更改为 <android.support.v7.widget.RecyclerView>
可修复错误。
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools" android:layout_
android:layout_ android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
android:paddingBottom="@dimen/activity_vertical_margin" tools:context=".CardListActivity">
<RecyclerView
android:layout_
android:layout_
android:id="@+id/cardList">
</RecyclerView>
当我使用<RecyclerView>
运行时,我收到此错误,.
`Process: com.liquidink.lollipopmaterialui, PID: 7317
java.lang.RuntimeException: Unable to start activity ComponentInfocom.liquidink.lollipopmaterialui/com.liquidink.lollipopmaterialui.CardListActivity: android.view.InflateException: Binary XML file line #8: Error inflating class RecyclerView
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2298)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
Caused by: android.view.InflateException: Binary XML file line #8: Error inflating class RecyclerView
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:757)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:228)
at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:102)
at com.liquidink.lollipopmaterialui.CardListActivity.onCreate(CardListActivity.java:18)
at android.app.Activity.performCreate(Activity.java:5933)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.view.RecyclerView" on path: DexPathList[[zip file "/data/app/com.liquidink.lollipopmaterialui-2/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
at android.view.LayoutInflater.createView(LayoutInflater.java:571)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:665)
at com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:65)
at android.view.LayoutInflater.onCreateView(LayoutInflater.java:682)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:741)
at android.view.LayoutInflater.rInflate(LayoutInflater.java:806)
at android.view.LayoutInflater.inflate(LayoutInflater.java:504)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.ActionBarActivityDelegateBase.setContentView(ActionBarActivityDelegateBase.java:228)
at android.support.v7.app.ActionBarActivity.setContentView(ActionBarActivity.java:102)
at com.liquidink.lollipopmaterialui.CardListActivity.onCreate(CardListActivity.java:18)
at android.app.Activity.performCreate(Activity.java:5933)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1105)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2251)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2360)
at android.app.ActivityThread.access$800(ActivityThread.java:144)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1278)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5221)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:899)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:694)
Suppressed: java.lang.ClassNotFoundException: android.view.RecyclerView
at java.lang.Class.classForName(Native Method)
at java.lang.BootClassLoader.findClass(ClassLoader.java:781)
at java.lang.BootClassLoader.loadClass(ClassLoader.java:841)
at java.lang.ClassLoader.loadClass(ClassLoader.java:504)
... 26 more
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available
`
【问题讨论】:
【参考方案1】:你应该这样在 XML 中添加 RecyclerView:
<android.support.v7.widget.RecyclerView
android:layout_
android:layout_
android:id="@+id/cardList">
</android.support.v7.widget.RecyclerView>
希望对你有帮助!
【讨论】:
您仍然需要将 implementation'com.android.support:recyclerview-v7:26.1.0' 作为 @KuRoSan ER 添加到您的 gradle 文件中。说【参考方案2】:RecyclerView
不包含在基本 Android 框架中,只有基本 Android 框架中的小部件(如 ListView
、GridView
等)可以在没有完整命名空间的布局中指定。 RecyclerView
是 recyclerview-v7
支持库的一部分。
【讨论】:
【参考方案3】:我今天遇到了这个问题。 并解决了。
第一步:保持你使用的支持库是相同的版本
compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:support-v4:23.1.1'
compile 'com.android.support:recyclerview-v7:23.1.1'
第二步:你应该将 recyclerView 添加到你的 proguard 文件中
-keep class android.support.v7.widget.** *;
// I`ve just keep all widgets
【讨论】:
其他解决方案均无效,将上述行添加到我的 pro-guard 文件中有效。可能值得一提的是,如果您的应用程序在调试版本中工作,而不是在具有回收器视图膨胀异常的发布中,那么上述将肯定是正确的解决方案,因为 proguard 用于发布版本而不是调试。谢谢【参考方案4】:确保在将 RecyclerView 添加到 XML 之前包含
compile 'com.android.support:recyclerview-v7:22.2.0'
compile 'com.android.support:appcompat-v7:22.2.0'
如果您在添加这些依赖项之前在 XML 中创建了 RecyclerView,要使其正常工作,您应该删除(注释)您的回收站视图,在没有它的情况下构建项目,然后将其添加回来。否则它仍然会在二进制 XML 行#n 中显示 Inflate 异常。
【讨论】:
我正在使用 Eclipse 并面临这个问题。我已将我的问题发布在:***.com/questions/33375943/… 我尝试了您的建议,即首先在 XML 中包含库,然后是回收器视图小部件,但我面临同样的问题。你能帮忙吗【参考方案5】:-
检查 build.gradle 中的参考
在您的布局 xml 文件中,将您的 RecyclerView 组件的名称作为一个整体与它的包一起写入
android.support.v7.widget.RecyclerView
not like RecyclerView
现在准备吃午饭了。好路线
【讨论】:
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