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POI was testing nl.siegmann.epublib.epub and I am running into Unable to start activity ComponentInfo
 

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  1. POI was testing nl.siegmann.epublib.epub and I am running into Unable to start activity ComponentInfo
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    <pre><code> public class EpubReaderMainActivity extends Activity { /** Called when the activity is first created. */ /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.main ); TextView tv = (TextView)findViewById(R.id.text); AssetManager am = getAssets(); try{ InputStream bookData = am.open("books/bookTest.epub"); Book book = (new EpubReader()).readEpub(bookData); Log.i("epublib", "author(s): " + book.getMetadata().getAuthors()); Log.i("epublib", "title: " + book.getTitle()); Bitmap coverImage = BitmapFactory.decodeStream(book.getCoverImage() .getInputStream()); Log.i("epublib", "Coverimage is " + coverImage.getWidth() + " by " + coverImage.getHeight() + " pixels"); logTableOfContents(book.getTableOfContents().getTocReferences(), 0); } catch (IOException e) { // TODO: handle exception e.printStackTrace(); } try{ // read epub file EpubReader epubReader = new EpubReader(); Book book = epubReader.readEpub(new FileInputStream("mybook.epub")); // print the first title List&lt;String&gt; titles = book.getMetadata().getTitles(); String a = ("book title:" + (titles.isEmpty() ? "book has no title" : titles.get(0))); tv.setText(a); } catch (IOException e) { // TODO: handle exception e.printStackTrace(); } } private void logTableOfContents(List&lt;TOCReference&gt; tocReferences, int depth) { // TODO Auto-generated method stub if (tocReferences == null) { return; } for (TOCReference tocReference : tocReferences) { StringBuilder tocString = new StringBuilder(); for (int i = 0; i &lt; depth; i++) { tocString.append("\t"); } tocString.append(tocReference.getTitle()); Log.i("epublib", tocString.toString()); logTableOfContents(tocReference.getChildren(), depth + 1); } } } </code></pre> <p>Stacktrace</p> <pre><code> 11-21 10:51:19.570: I/AndroidLoggerFactory(325): Logger name 'nl.siegmann.epublib.epub.EpubReader' exceeds maximum length of 23 characters, using 'n*.s*.e*.e*.EpubReader' instead. 11-21 10:51:19.780: D/dalvikvm(325): GC_CONCURRENT freed 1136K, 56% free 2984K/6727K, external 2002K/2137K, paused 3ms+3ms 11-21 10:51:19.790: I/AndroidLoggerFactory(325): Logger name 'nl.siegmann.epublib.epub.EpubProcessorSupport' exceeds maximum length of 23 characters, using 'n*.s*.e*.e*.EpubProces*' instead. 11-21 10:51:19.830: I/AndroidLoggerFactory(325): Logger name 'nl.siegmann.epublib.epub.PackageDocumentReader' exceeds maximum length of 23 characters, using 'n*.s*.e*.e*.PackageDoc*' instead. 11-21 10:51:19.929: I/AndroidLoggerFactory(325): Logger name 'nl.siegmann.epublib.epub.NCXDocument' exceeds maximum length of 23 characters, using 'n*.s*.e*.e*.NCXDocument' instead. 11-21 10:51:19.980: I/epublib(325): author(s): [Haynes, Carrie James] 11-21 10:51:19.980: I/epublib(325): title: Whispers of a Legend - Part One - Shadows of the Past 11-21 10:51:19.980: D/AndroidRuntime(325): Shutting down VM 11-21 10:51:19.980: W/dalvikvm(325): threadid=1: thread exiting with uncaught exception (group=0x40015560) 11-21 10:51:19.990: E/AndroidRuntime(325): FATAL EXCEPTION: main 11-21 10:51:19.990: E/AndroidRuntime(325): java.lang.RuntimeException: Unable to start activity ComponentInfo{epub.reader/epub.reader.EpubReaderMainActivity}: java.lang.NullPointerException 11-21 10:51:19.990: E/AndroidRuntime(325): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1647) 11-21 10:51:19.990: E/AndroidRuntime(325): at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1663) 11-21 10:51:19.990: E/AndroidRuntime(325): at android.app.ActivityThread.access$1500(ActivityThread.java:117) 11-21 10:51:19.990: E/AndroidRuntime(325): at android.app.ActivityThread$H.handleMessage(ActivityThread.java:931) 11-21 10:51:19.990: E/AndroidRuntime(325): at android.os.Handler.dispatchMessage(Handler.java:99) 11-21 10:51:19.990: E/AndroidRuntime(325): at android.os.Looper.loop(Looper.java:123) 11-21 10:51:19.990: E/AndroidRuntime(325): at android.app.ActivityThread.main(ActivityThread.java:3683) 11-21 10:51:19.990: E/AndroidRuntime(325): at java.lang.reflect.Method.invokeNative(Native Method) 11-21 10:51:19.990: E/AndroidRuntime(325): at java.lang.reflect.Method.invoke(Method.java:507) 11-21 10:51:19.990: E/AndroidRuntime(325): at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:839) 11-21 10:51:19.990: E/AndroidRuntime(325): at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597) 11-21 10:51:19.990: E/AndroidRuntime(325): at dalvik.system.NativeStart.main(Native Method) 11-21 10:51:19.990: E/AndroidRuntime(325): Caused by: java.lang.NullPointerException 11-21 10:51:19.990: E/AndroidRuntime(325): at epub.reader.EpubReaderMainActivity.onCreate(EpubReaderMainActivity.java:43) 11-21 10:51:19.990: E/AndroidRuntime(325): at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1047) 11-21 10:51:19.990: E/AndroidRuntime(325): at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1611) 11-21 10:51:19.990: E/AndroidRuntime(325): ... 11 more </code></pre> <p>AndroidManifest.xml</p> <pre><code>&lt;?xml version="1.0" encoding="utf-8"?&gt; &lt;manifest xmlns:android="http://schemas.android.com/apk/res/android" package="epub.reader" android:versionCode="1" android:versionName="1.0" &gt; &lt;uses-sdk android:minSdkVersion="10" /&gt; &lt;application android:icon="@drawable/ic_launcher" android:label="@string/app_name" &gt; &lt;activity android:label="@string/app_name" android:name=".EpubReaderMainActivity" &gt; &lt;intent-filter &gt; &lt;action android:name="android.intent.action.MAIN" /&gt; &lt;category android:name="android.intent.category.LAUNCHER" /&gt; &lt;/intent-filter&gt; &lt;/activity&gt; &lt;/application&gt; &lt;/manifest&gt; </code></pre> <p>I have been trying for a while but I am stuck. Here is what I tried I checked the Epublib packages if there is any requirement of a permission in order to run the activity. What this activity does is log in the .epub file and read just the first title since I am testing out their code.</p>
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