java.lang.NoClassDefFoundError lors de l'ouverture pdf

Question

J'essaie d'implémenter une visionneuse pdf, l'application vient pour détecter les fichiers PDF stockés dans la carte SD, comme vous pouvez le voir dans l'image. Mais quand je clique sur un fichier pour l'afficher ... ERREUR. http://img225.imageshack.us/img225/3852/pdfs.png

C'est le LogCat:

06-28 07:32:46.963: WARN/dalvikvm(330): Unable to resolve superclass of Lcom/example/trypdf/Second; (496) 
06-28 07:32:46.983: WARN/dalvikvm(330): Link of class 'Lcom/example/trypdf/Second;' failed 
06-28 07:32:46.983: ERROR/dalvikvm(330): Could not find class 'com.example.trypdf.Second', referenced from method com.example.trypdf.PDFViewerActivity.openPdfIntent 
06-28 07:32:47.013: WARN/dalvikvm(330): VFY: unable to resolve const-class 419 (Lcom/example/trypdf/Second;) in Lcom/example/trypdf/PDFViewerActivity; 
06-28 07:32:47.013: DEBUG/dalvikvm(330): VFY: replacing opcode 0x1c at 0x0002 
06-28 07:32:47.013: DEBUG/dalvikvm(330): VFY: dead code 0x0004-000e in Lcom/example/trypdf/PDFViewerActivity;.openPdfIntent (Ljava/lang/String;)V 
06-28 07:32:47.373: INFO/ActivityManager(59): Displayed activity com.example.trypdf/.PDFViewerActivity: 1665 ms (total 1665 ms) 
06-28 07:32:52.593: DEBUG/dalvikvm(131): GC_EXPLICIT freed 1336 objects/74064 bytes in 149ms 
06-28 07:33:28.634: DEBUG/SntpClient(59): request time failed: java.net.SocketException: Address family not supported by protocol 
06-28 07:33:55.655: DEBUG/AndroidRuntime(330): Shutting down VM 
06-28 07:33:55.663: WARN/dalvikvm(330): threadid=1: thread exiting with uncaught exception (group=0x4001d800) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330): FATAL EXCEPTION: main 
06-28 07:33:55.684: ERROR/AndroidRuntime(330): java.lang.NoClassDefFoundError: com.example.trypdf.Second 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at com.example.trypdf.PDFViewerActivity.openPdfIntent(PDFViewerActivity.java:46) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at com.example.trypdf.PDFViewerActivity.onListItemClick(PDFViewerActivity.java:41) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at android.app.ListActivity$2.onItemClick(ListActivity.java:321) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at android.widget.AdapterView.performItemClick(AdapterView.java:284) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at android.widget.ListView.performItemClick(ListView.java:3382) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at android.widget.AbsListView$PerformClick.run(AbsListView.java:1696) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at android.os.Handler.handleCallback(Handler.java:587) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at android.os.Handler.dispatchMessage(Handler.java:92) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at android.os.Looper.loop(Looper.java:123) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at android.app.ActivityThread.main(ActivityThread.java:4627) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at java.lang.reflect.Method.invokeNative(Native Method) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at java.lang.reflect.Method.invoke(Method.java:521) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:868) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:626) 
06-28 07:33:55.684: ERROR/AndroidRuntime(330):  at dalvik.system.NativeStart.main(Native Method) 
06-28 07:33:55.693: WARN/ActivityManager(59): Force finishing activity com.example.trypdf/.PDFViewerActivity 
06-28 07:33:56.213: WARN/ActivityManager(59): Activity pause timeout for HistoryRecord{44fe47a0 com.example.trypdf/.PDFViewerActivity} 

J'ai essayé presque tout:

• Créer un nouveau projet et copier les classes.
• Utiliser une autre cible (APIS lvl10), (2.2, _lvl8).
• Nettoyer et construire
• Réinitialiser ADB.
• Utilisez la bibliothèque téléchargée PDFViewer d'un autre site.

Mais je reçois toujours la même erreur:

06-28 07:32:46.983: ERROR/dalvikvm(330): Could not find class 'com.example.trypdf.Second', referenced from method com.example.trypdf.PDFViewerActivity.openPdfIntent 
06-28 07:33:55.684: ERROR/AndroidRuntime(330): java.lang.NoClassDefFoundError: com.example.trypdf.Second 

Ici vous pouvez voir mes deux classes, ainsi que la MANIFESTE.

PDFViewerActivity.java

package com.example.trypdf; 

import java.io.File; 
import java.io.FilenameFilter; 

import com.example.trypdf.Second; 
import net.sf.andpdf.pdfviewer.PdfViewerActivity; 
import android.app.ListActivity; 
import android.content.Intent; 
import android.os.Bundle; 
import android.os.Environment; 
import android.view.View; 
import android.widget.ArrayAdapter; 
import android.widget.ListView; 

public class PDFViewerActivity extends ListActivity { 

    String[] pdflist; 
    File[] imagelist; 
    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     super.onCreate(savedInstanceState); 
     //setContentView(R.layout.main); 

     File images = Environment.getExternalStorageDirectory(); 
     imagelist = images.listFiles(new FilenameFilter() { 
      public boolean accept(File dir, String name) { 
       return ((name.endsWith(".pdf"))); 
      } 
     }); 
     pdflist = new String[imagelist.length]; 
     for (int i = 0; i < imagelist.length; i++) { 
      pdflist[i] = imagelist[i].getName(); 
     } 
     this.setListAdapter(new ArrayAdapter<String>(this, 
       android.R.layout.simple_list_item_1, pdflist)); 
    } 

    protected void onListItemClick(ListView l, View v, int position, long id) { 
     super.onListItemClick(l, v, position, id); 
     String path = imagelist[(int) id].getAbsolutePath(); 
     openPdfIntent(path); 
    } 

    private void openPdfIntent(String path) { 
     try { 
      final Intent intent = new Intent(PDFViewerActivity.this, Second.class); 
      intent.putExtra(PdfViewerActivity.EXTRA_PDFFILENAME, path); 
      startActivity(intent); 
     } catch (Exception e) { 
      e.printStackTrace(); 
     } 
    } 
} 

Second.java

 package com.example.trypdf; 

import net.sf.andpdf.pdfviewer.PdfViewerActivity; 
import net.sf.andpdf.pdfviewer.R; 
import net.sf.andpdf.pdfviewer.R.drawable; 
import net.sf.andpdf.pdfviewer.R.id; 
import net.sf.andpdf.pdfviewer.R.layout; 
import android.os.Bundle; 

public class Second extends PdfViewerActivity { 

    @Override 
    public void onCreate(Bundle savedInstanceState) { 
     // TODO Auto-generated method stub 
     super.onCreate(savedInstanceState); 
    } 

    public int getPreviousPageImageResource() { 
     return R.drawable.left_arrow; 
    } 

    public int getNextPageImageResource() { 
     return R.drawable.right_arrow; 
    } 

    public int getZoomInImageResource() { 
     return R.drawable.zoom_in; 
    } 

    public int getZoomOutImageResource() { 
     return R.drawable.zoom_out; 
    } 

    public int getPdfPasswordLayoutResource() { 
     return R.layout.pdf_file_password; 
    } 

    public int getPdfPageNumberResource() { 
     return R.layout.dialog_pagenumber; 
    } 

    public int getPdfPasswordEditField() { 
     return R.id.etPassword; 
    } 

    public int getPdfPasswordOkButton() { 
     return R.id.btOK; 
    } 

    public int getPdfPasswordExitButton() { 
     return R.id.btExit; 
    } 

    public int getPdfPageNumberEditField() { 
     return R.id.pagenum_edit; 
    } 
} 

Manifest

<manifest xmlns:android="http://schemas.android.com/apk/res/android" 
    package="com.example.trypdf" 
    android:versionCode="1" 
    android:versionName="1.0" > 

    <uses-sdk 
     android:minSdkVersion="8" 
     android:targetSdkVersion="15" /> 
<application 
     android:icon="@drawable/ic_launcher" 
     android:label="@string/app_name" > 
     <activity 
      android:name="com.example.trypdf.PDFViewerActivity" 
      android:label="@string/app_name" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.LAUNCHER" /> 
      </intent-filter> 
     </activity> 
     <activity 
     android:name="com.example.trypdf.Second" 
      android:label="@string/app_name" > 
      <intent-filter> 
       <action android:name="android.intent.action.MAIN" /> 

       <category android:name="android.intent.category.DEFAULT" /> 
      </intent-filter> 
     </activity> 
    </application> 
</manifest> 

Thankss !!!

Answer 1

Pour résoudre ce problème, vous devez:

1. Créer un nom dossier « libs » dans le projet. 2 Importer des bibliothèques Vous avez besoin du projet dans ce nouveau dossier. 2.1. Pour les importer: faites un clic droit dans le dossier libs -> import -> système de fichiers -> sélectionnez le .jar et acceptez.
2. Nettoyer et construire et démarrer

Source: Akki