java.lang.NoClassDefFoundError：android.support.v7.appcompat.R $ styleable error

Question

嗨我有一個問題，導入support.v7.appcompat。我進口android.support.v7.app.AppCompatActivity我libs文件夾，但是當我開始運行我得到這個日誌：

11-01 17:35:42.669: E/AndroidRuntime(1873): FATAL EXCEPTION: main 
11-01 17:35:42.669: E/AndroidRuntime(1873): java.lang.NoClassDefFoundError: android.support.v7.appcompat.R$styleable 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at android.support.v7.app.AppCompatDelegateImplBase.onCreate(AppCompatDelegateImplBase.java:109) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at android.support.v7.app.AppCompatDelegateImplV7.onCreate(AppCompatDelegateImplV7.java:146) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at android.support.v7.app.AppCompatActivity.onCreate(AppCompatActivity.java:59) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at morisson.Notowaniagieldowe.MainActivity.onCreate(MainActivity.java:17) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at android.app.Activity.performCreate(Activity.java:5104) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1080) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2144) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2230) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at android.app.ActivityThread.access$600(ActivityThread.java:141) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1234) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at android.os.Handler.dispatchMessage(Handler.java:99) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at android.os.Looper.loop(Looper.java:137) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at android.app.ActivityThread.main(ActivityThread.java:5041) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at java.lang.reflect.Method.invokeNative(Native Method) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at java.lang.reflect.Method.invoke(Method.java:511) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:793) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:560) 
11-01 17:35:42.669: E/AndroidRuntime(1873):  at dalvik.system.NativeStart.main(Native Method) 

，這裏是我的MainActivity：

import android.os.Bundle; 
import android.support.design.widget.TabLayout; 
import android.support.v4.view.ViewPager; 
import android.support.v7.app.AlertDialog; 
import android.support.v7.app.AppCompatActivity; 


public class MainActivity extends AppCompatActivity { 




    @Override 
    protected void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.main_activity); 

     AlertDialog.Builder alertDialogBuilder = new AlertDialog.Builder(MainActivity.this); 



     // Get the ViewPager and set it's PagerAdapter so that it can display items 
     ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager); 
     viewPager.setAdapter(new SampleFragmentPagerAdapter(getSupportFragmentManager(), 
      MainActivity.this)); 

     // Give the TabLayout the ViewPager 
     TabLayout tabLayout = (TabLayout) findViewById(R.id.sliding_tabs); 
     tabLayout.setupWithViewPager(viewPager); 

    } 

} 

我已經看到了一些解決這個問題的其他職位，但它不適用於我的情況。有什麼建議麼？

Answer 1

如果你使用過Android Studio然後把這個線你的build.gradle文件

dependencies { 
    compile "com.android.support:appcompat-v7:21.0.+" 
} 

Answer 2

裏面如果您使用的是Eclipse

• 刪除libs文件夾的罐子。
• 在您的eclipse工作區導入sdk \ extras \ android \ support \ v7 \ appcompat \ project。
• 確保android-support-v4.jar在您的項目中相同。
• 將appcompat作爲庫添加到您的項目中。

確保您在YOUT的Manifest.xml您的活動具有正確的主題

<activity 
    android:name="***.*****.******" 
    android:label="@string/app_name" 
    android:theme="@style/Theme.AppCompat.Light" 
    > 

如果您使用的是Android Studio中

將這個線你的build.gradle文件中

dependencies { 
    compile "com.android.support:appcompat-v7:21.0.+" 
}