PDF 查看器 android

Question

我正在使用 PDFViewer.jar 通过我的应用阅读 pdf。

应用程序无法成功读取 pdf，我收到此异常：

12-10 09:47:25.700: W/System.err(15665): java.io.IOException: This may not be a PDF File
12-10 09:47:25.710: W/System.err(15665):    at com.sun.pdfview.PDFFile.parseFile(PDFFile.java:1395)
12-10 09:47:25.710: W/System.err(15665):    at com.sun.pdfview.PDFFile.<init>(PDFFile.java:140)
12-10 09:47:25.710: W/System.err(15665):    at com.sun.pdfview.PDFFile.<init>(PDFFile.java:116)
12-10 09:47:25.710: W/System.err(15665):    at com.proxycensus.mysharesUK.PdfViewerActivity.openFile(PdfViewerActivity.java:851)
12-10 09:47:25.710: W/System.err(15665):    at com.proxycensus.mysharesUK.PdfViewerActivity.parsePDF(PdfViewerActivity.java:815)
12-10 09:47:25.710: W/System.err(15665):    at com.proxycensus.mysharesUK.PdfViewerActivity.setContent(PdfViewerActivity.java:217)
12-10 09:47:25.710: W/System.err(15665):    at com.proxycensus.mysharesUK.PdfViewerActivity.onCreate(PdfViewerActivity.java:208)
12-10 09:47:25.710: W/System.err(15665):    at com.proxycensus.mysharesUK.ObjActivity.onCreate(ObjActivity.java:23)
12-10 09:47:25.710: W/System.err(15665):    at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1050)
12-10 09:47:25.710: W/System.err(15665):    at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:1782)
12-10 09:47:25.710: W/System.err(15665):    at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:1834)
12-10 09:47:25.710: W/System.err(15665):    at android.app.ActivityThread.access$500(ActivityThread.java:122)
12-10 09:47:25.710: W/System.err(15665):    at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1027)
12-10 09:47:25.710: W/System.err(15665):    at android.os.Handler.dispatchMessage(Handler.java:99)
12-10 09:47:25.710: W/System.err(15665):    at android.os.Looper.loop(Looper.java:132)
12-10 09:47:25.710: W/System.err(15665):    at android.app.ActivityThread.main(ActivityThread.java:4126)
12-10 09:47:25.710: W/System.err(15665):    at java.lang.reflect.Method.invokeNative(Native Method)
12-10 09:47:25.710: W/System.err(15665):    at java.lang.reflect.Method.invoke(Method.java:491)
12-10 09:47:25.710: W/System.err(15665):    at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:844)
12-10 09:47:25.710: W/System.err(15665):    at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:602)
12-10 09:47:25.710: W/System.err(15665):    at dalvik.system.NativeStart.main(Native Method)

代码：

public void openFile(File file, String password) throws IOException {
        // first open the file for random access
        RandomAccessFile raf = new RandomAccessFile(file, "r");

        // extract a file channel
        FileChannel channel = raf.getChannel();

        // now memory-map a byte-buffer
        ByteBuffer bb =
                ByteBuffer.NEW(channel.map(FileChannel.MapMode.READ_ONLY, 0, channel.size()));
        // create a PDFFile from the data
        if (password == null)
            mPdfFile = new PDFFile(bb);
        else
            mPdfFile = new PDFFile(bb, new PDFPassword(password));

        mGraphView.showText("CLHed:" + mPdfFile.getNumPages());
    }

我得到的路径：

12-10 10:03:27.550: E/ObjActivity(16090): path =/data/data/com.proxycensus.mysharesUK/files/05bf2f15-5b08-4014-882a-c0157faa79b9-myshares-doc.pdf

我无法访问 jar，因此我可以检查是哪一行导致了问题。谁能帮我？有没有人面临同样的问题？谢谢

Answer 1

pdf 文件的路径错误。调试一下