我试图阅读我使用http://www.siegmann.nl/epublib/android的 epub 文件。我正在尝试链接中给出的相同示例，但我得到了java.lang.NoClassDefFoundError。我尽我所能。即使通过 adt、eclipse 进行更改，但我无法解决此问题。请调查一下并给我一些建议。
04-20 15:08:47.735: E/AndroidRuntime(4329): FATAL EXCEPTION: main
04-20 15:08:47.735: E/AndroidRuntime(4329): java.lang.ExceptionInInitializerError
04-20 15:08:47.735: E/AndroidRuntime(4329): at com.sample.pubreader.EPubReaderActivity.onCreate(EPubReaderActivity.java:30)
04-20 15:08:47.735: E/AndroidRuntime(4329): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1093)
04-20 15:08:47.735: E/AndroidRuntime(4329): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1780)
04-20 15:08:47.735: E/AndroidRuntime(4329): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1837)
04-20 15:08:47.735: E/AndroidRuntime(4329): at android.app.ActivityThread.access$1500(ActivityThread.java:132)
04-20 15:08:47.735: E/AndroidRuntime(4329): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1033)
04-20 15:08:47.735: E/AndroidRuntime(4329): at android.os.Handler.dispatchMessage(Handler.java:99)
04-20 15:08:47.735: E/AndroidRuntime(4329): at android.os.Looper.loop(Looper.java:143)
04-20 15:08:47.735: E/AndroidRuntime(4329): at android.app.ActivityThread.main(ActivityThread.java:4196)
04-20 15:08:47.735: E/AndroidRuntime(4329): at java.lang.reflect.Method.invokeNative(Native Method)
04-20 15:08:47.735: E/AndroidRuntime(4329): at java.lang.reflect.Method.invoke(Method.java:507)
04-20 15:08:47.735: E/AndroidRuntime(4329): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839)
04-20 15:08:47.735: E/AndroidRuntime(4329): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
04-20 15:08:47.735: E/AndroidRuntime(4329): at dalvik.system.NativeStart.main(Native Method)
04-20 15:08:47.735: E/AndroidRuntime(4329): Caused by: java.lang.NoClassDefFoundError: org.slf4j.LoggerFactory
04-20 15:08:47.735: E/AndroidRuntime(4329): at nl.siegmann.epublib.epub.EpubReader.<clinit>(EpubReader.java:33)
04-20 15:08:47.735: E/AndroidRuntime(4329): ... 14 more
尽管我的代码与上面的链接相似，但我也提供了代码。
public class EPubReaderActivity extends Activity {
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
AssetManager assetManager = getAssets();
try {
// find InputStream for book
InputStream epubInputStream = assetManager
.open("sample.epub");
// Load Book from inputStream
Book book = (new EpubReader()).readEpub(epubInputStream);
// Log the book's authors
Log.i("epublib", "author(s): " + book.getMetadata().getAuthors());
// Log the book's title
Log.i("epublib", "title: " + book.getTitle());
// Log the book's coverimage property
Bitmap coverImage = BitmapFactory.decodeStream(book.getCoverImage()
.getInputStream());
Log.i("epublib", "Coverimage is " + coverImage.getWidth() + " by "
+ coverImage.getHeight() + " pixels");
// Log the tale of contents
logTableOfContents(book.getTableOfContents().getTocReferences(), 0);
} catch (IOException e) {
Log.e("epublib", e.getMessage());
}
}
private void logTableOfContents(List<TOCReference> tocReferences, int depth) {
if (tocReferences == null) {
return;
}
for (TOCReference tocReference : tocReferences) {
StringBuilder tocString = new StringBuilder();
for (int i = 0; i < depth; i++) {
tocString.append("\t");
}
tocString.append(tocReference.getTitle());
Log.i("epublib", tocString.toString());
logTableOfContents(tocReference.getChildren(), depth + 1);
}
}
}