android - 膨胀类 android.support.design.widget.CoordinatorLayout 和 ClassNotFoundException : android. support.design.R$styleable 时出错

Question

我正在开发一个应用程序，它具有带滑动功能的选项卡。我正在使用 Eclipse 进行开发。我已经导入了 support design library通过属性(property)作为图书馆。在运行期间，我不断收到此错误“Error inflating class android.support.design.widget.CoordinatorLayout”。

1. 首先我添加了android support design.jar并尝试过，这是行不通的
2. 我添加了 class.jar support design library 的文件通过 J ava build path这是行不通的
3. 最后我导入了 support design library作为库使用 Properties->Android->Add Library这也不起作用
4. 我使用父主题作为“Theme.AppCompat.Light.DarkActionBar”

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

1. 我正在扩展 AppCompatActivity ，查看我的 MainActivity.Java

   包 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

我已经尝试了 SO 所讨论和提供的大部分内容。我仍然无法追踪我的程序出了什么问题。

需要帮助来解决这个问题。

谢谢

Answer 1

我在迁移到 AndroidX 时遇到了这个错误

为了解决我做了:

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

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

2. 检查布局 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 ...

将其替换为: <androidx.coordinatorlayout.widget.CoordinatorLayout

1. 在同一布局文件中 - 替换结束标记

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

与

</androidx.coordinatorlayout.widget.CoordinatorLayout>