本文介绍了扩展类android.support.v7.widget.CardView时出错的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我在尝试运行我的应用程序时意外遇到以下错误：
I unexpectedly encountered the following error while trying to run my application:
Binary XML file line #8: Error inflating class android.support.v7.widget.CardView
以下是日志猫：
11-09 13:11:58.558: E/AndroidRuntime(12542): FATAL EXCEPTION: main
11-09 13:11:58.558: E/AndroidRuntime(12542): android.view.InflateException: Binary XML file line #8: Error inflating class android.support.v7.widget.CardView
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:698)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.view.LayoutInflater.rInflate(LayoutInflater.java:746)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.view.LayoutInflater.inflate(LayoutInflater.java:489)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.view.LayoutInflater.inflate(LayoutInflater.java:396)
11-09 13:11:58.558: E/AndroidRuntime(12542): at com.dooba.beta.ThirdFragment.onCreateView(ThirdFragment.java:15)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.support.v4.app.Fragment.performCreateView(Fragment.java:1786)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:947)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.support.v4.app.FragmentManagerImpl.moveToState(FragmentManager.java:1126)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.support.v4.app.BackStackRecord.run(BackStackRecord.java:739)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.support.v4.app.FragmentManagerImpl.execPendingActions(FragmentManager.java:1489)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.support.v4.app.FragmentManagerImpl$1.run(FragmentManager.java:454)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.os.Handler.handleCallback(Handler.java:615)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.os.Handler.dispatchMessage(Handler.java:92)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.os.Looper.loop(Looper.java:137)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.app.ActivityThread.main(ActivityThread.java:4745)
11-09 13:11:58.558: E/AndroidRuntime(12542): at java.lang.reflect.Method.invokeNative(Native Method)
11-09 13:11:58.558: E/AndroidRuntime(12542): at java.lang.reflect.Method.invoke(Method.java:511)
11-09 13:11:58.558: E/AndroidRuntime(12542): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:786)
11-09 13:11:58.558: E/AndroidRuntime(12542): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
11-09 13:11:58.558: E/AndroidRuntime(12542): at dalvik.system.NativeStart.main(Native Method)
11-09 13:11:58.558: E/AndroidRuntime(12542): Caused by: java.lang.ClassNotFoundException: android.support.v7.widget.CardView
11-09 13:11:58.558: E/AndroidRuntime(12542): at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:61)
11-09 13:11:58.558: E/AndroidRuntime(12542): at java.lang.ClassLoader.loadClass(ClassLoader.java:501)
11-09 13:11:58.558: E/AndroidRuntime(12542): at java.lang.ClassLoader.loadClass(ClassLoader.java:461)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.view.LayoutInflater.createView(LayoutInflater.java:552)
11-09 13:11:58.558: E/AndroidRuntime(12542): at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:687)
11-09 13:11:58.558: E/AndroidRuntime(12542): ... 19 more
以下是java代码：
public class ThirdFragment extends Fragment {
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.activity_city, container, false);
return rootView;
}
}
以下是布局代码：
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<!-- A CardView that contains a TextView -->
<android.support.v7.widget.CardView
xmlns:card_view="http://schemas.android.com/apk/res-auto"
android:id="@+id/card_view"
android:layout_gravity="center"
android:layout_width="200dp"
android:layout_height="200dp"
>
<TextView
android:id="@+id/info_text"
android:layout_width="match_parent"
android:layout_height="match_parent"
/>
</android.support.v7.widget.CardView>
</LinearLayout>
提前致谢
推荐答案
我通过在app / build.gradle上添加更新的cardview和appcompat解决了这个问题
I solved this by adding updated cardview and appcompat on the app/build.gradle
dependencies {
...
compile 'com.android.support:appcompat-v7:23.4.0'
compile 'com.android.support:cardview-v7:23.4.0'
compile 'com.android.support:recyclerview-v7:23.4.0'
}
然后重建项目
这篇关于扩展类android.support.v7.widget.CardView时出错的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！