扩展类android.support.design.widget.CoordinatorLayout和ClassNotFoundException时出错:android.support.design.R $ styleable

Question

我正在开发一个具有滑动功能的Tab的应用程序.我正在使用Eclipse进行开发.我已support design library通过Property 导入了as Library.在运行期间,我不断收到此错误" Error inflating class android.support.design.widget.CoordinatorLayout".

1. 首先,我添加android support design.jar并尝试,这是行不通的
2. 我添加了通过J 的class.jar文件,但是没有用support design libraryava build path
3. 最后我support design library用Properties->Android->Add Library这个导入了as Library 也行不通
4. 我使用父主题为" Theme.AppCompat.Light.DarkActionBar"

" <style name="MyMaterialTheme.Base" parent="Theme.AppCompat.Light.DarkActionBar">"

5. 我正在扩展AppCompatActivity,请参阅我的MainActivity.Java

   package com.example.scrollingtab.activity;

   import android.support.v7.app.AppCompatActivity;
   import android.support.v7.widget.Toolbar;
   import android.widget.Button;
   import com.example.scrollingtab.R;
   
   public class MainActivity extends AppCompatActivity implements View.OnClickListener {
   
       private Toolbar toolbar;
       private Button btnSimpleTabs, btnScrollableTabs, btnIconTextTabs, btnIconTabs, btnCustomIconTextTabs;
   
       @Override
       protected void onCreate(Bundle savedInstanceState) {
           super.onCreate(savedInstanceState);
           setContentView(R.layout.activity_main);
           toolbar = (Toolbar) findViewById(R.id.toolbar);
           setSupportActionBar(toolbar);
   
           btnSimpleTabs = (Button) findViewById(R.id.btnSimpleTabs);
   
           btnSimpleTabs.setOnClickListener(this);
   
       }
   

下面是完整的堆栈跟踪:

FATAL EXCEPTION: main
Process: com.example.scrollingtab, PID: 1348
java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.scrollingtab/com.example.scrollingtab.activity.MainActivity}: android.view.InflateException: Binary XML file line #1: Error inflating class android.support.design.widget.CoordinatorLayout
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2325)
at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2390)
at android.app.ActivityThread.access$800(ActivityThread.java:151)
at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1303)
at android.os.Handler.dispatchMessage(Handler.java:102)
at android.os.Looper.loop(Looper.java:135)
at android.app.ActivityThread.main(ActivityThread.java:5257)
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:903)
at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:698)
Caused by: android.view.InflateException: Binary XML file line #1: Error inflating class android.support.design.widget.CoordinatorLayout
at android.view.LayoutInflater.createView(LayoutInflater.java:633)
at android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:743)
at android.view.LayoutInflater.inflate(LayoutInflater.java:482)
at android.view.LayoutInflater.inflate(LayoutInflater.java:414)
at android.view.LayoutInflater.inflate(LayoutInflater.java:365)
at android.support.v7.app.AppCompatDelegateImplV7.setContentView(AppCompatDelegateImplV7.java:257)
at android.support.v7.app.AppCompatActivity.setContentView(AppCompatActivity.java:109)
at com.example.scrollingtab.activity.MainActivity.onCreate(MainActivity.java:20)
at android.app.Activity.performCreate(Activity.java:5990)
at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1106)
at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2278)
Caused by: java.lang.reflect.InvocationTargetException
at java.lang.reflect.Constructor.newInstance(Native Method)
at java.lang.reflect.Constructor.newInstance(Constructor.java:288)
at android.view.LayoutInflater.createView(LayoutInflater.java:607)
Caused by: java.lang.NoClassDefFoundError: Failed resolution of: Landroid/support/design/R$styleable;
at android.support.design.widget.CoordinatorLayout.<init>(CoordinatorLayout.java:171)
at android.support.design.widget.CoordinatorLayout.<init>(CoordinatorLayout.java:165)
Caused by: java.lang.ClassNotFoundException: Didn't find class "android.support.design.R$styleable" on path: DexPathList[[zip file "/data/app/com.example.scrollingtab-2/base.apk"],nativeLibraryDirectories=[/vendor/lib, /system/lib]]
at dalvik.system.BaseDexClassLoader.findClass(BaseDexClassLoader.java:56)
at java.lang.ClassLoader.loadClass(ClassLoader.java:511)
at java.lang.ClassLoader.loadClass(ClassLoader.java:469)
Suppressed: java.lang.ClassNotFoundException: android.support.design.R$styleable
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)
Caused by: java.lang.NoClassDefFoundError: Class not found using the boot class loader; no stack available

我已经尝试过SO谈论和提供的大部分内容.我仍然无法追踪我的计划中的错误.

需要帮助来解决这个问题.

谢谢

Answer 1

对我来说,这个错误是由于使用了一些androidx库,但在某些layout.xml文件中仍然具有旧的坐标布局.

build.gradle:

com.android.support:coordinatorlayout - > androidx.coordinatorlayout:coordinatorlayout:1.0.0-alpha1

如果你正在使用androidx那么也许这也是你的问题.我也必须更新其他v7库Toolbar.

请参阅androidx此处的迁移指南:https://developer.android.com/topic/libraries/support-library/refactor

Answer 2

迁移至AndroidX时出现此错误

为了解决我做了：

1. 如@Mikeumus所建议-并将其添加到模块的build.gradle依赖项中：

   实现'androidx.coordinatorlayout：coordinatorlayout：latest.version.here'

2. 检入Layout XML文件（您尝试使用setContentView启动的布局

如果布局包含：< android.support.design.widget.CoordinatorLayout...

替换为： <androidx.coordinatorlayout.widget.CoordinatorLayout

3. 在同一布局文件中-替换结束标记

</android.support.design.widget.CoordinatorLayout>

与

</androidx.coordinatorlayout.widget.CoordinatorLayout>

Answer 3

对于android studio,尝试添加这些依赖项

compile 'com.android.support:appcompat-v7:23.1.1'
compile 'com.android.support:design:23.1.1'

Answer 4

我找到了eclipse的解决方案

我面临的问题是R.Java文件没有在 gen/ 文件夹中的support.design下生成。

执行以下步骤后，R.Java将生成文件。主要问题是设计库的目标是 22。更改为 23 有效。

1. 将支持设计库导入到\sdk\extras\android\support\designEclipse 工作区。

2. 打开project.propertiesAppCompat和设计库并将其定位到23

3. 干净的Appcompat、设计和YourProject。

4. 运行应用程序