Android-Code to Implement PDF Viewer

Question

Here i need to use Pdf-Viewer in my app.i took many API as a reference but still stucking up in viewing Pdf files from SDCARD. here my code

`First.java<

Answer 1

you can open pdf on google doc

    WebView webviewer = new WebView(this);
    webviewer.getSettings().setJavaScriptEnabled(true);
    webviewer.getSettings().setPluginsEnabled(true);
    setContentView(webviewer);

    webviewer.loadUrl("http://docs.google.com/gview?embedded=true&url=PDF_url/fileName.pdf");
    setContentView(webviewer);

To open the PDF in application like quick pdf or adobe pdf reader:

    Uri path = Uri.fromFile(file);
    Intent intent = new Intent(Intent.ACTION_VIEW);
    intent.setDataAndType(path, "application/pdf");
    intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
    startActivity(intent);

Answer 2

You can use AndroidPdfViewer library.

Add this dependency in your Grade:

implementation 'com.github.barteksc:android-pdf-viewer:2.8.2'

Add PDFView in activity_main.xml

<com.github.barteksc.pdfviewer.PDFView
    android:id="@+id/pdfView"
    android:layout_width="match_parent"
    android:layout_height="match_parent"/>

Add Load a PDF file in MainActivity.java

pdfView.fromUri(Uri)

or

pdfView.fromFile(File)

or

pdfView.fromBytes(byte[])

or

pdfView.fromStream(InputStream) // stream is written to bytearray - native code cannot use Java Streams

or

pdfView.fromSource(DocumentSource)

or

pdfView.fromAsset(String)
    .pages(0, 2, 1, 3, 3, 3) // all pages are displayed by default
    .enableSwipe(true) // allows to block changing pages using swipe
    .swipeHorizontal(false)
    .enableDoubletap(true)
    .defaultPage(0)
    // allows to draw something on the current page, usually visible in the middle of the screen
    .onDraw(onDrawListener)
    // allows to draw something on all pages, separately for every page. Called only for visible pages
    .onDrawAll(onDrawListener)
    .onLoad(onLoadCompleteListener) // called after document is loaded and starts to be rendered
    .onPageChange(onPageChangeListener)
    .onPageScroll(onPageScrollListener)
    .onError(onErrorListener)
    .onPageError(onPageErrorListener)
    .onRender(onRenderListener) // called after document is rendered for the first time
    // called on single tap, return true if handled, false to toggle scroll handle visibility
    .onTap(onTapListener)
    .onLongPress(onLongPressListener)
    .enableAnnotationRendering(false) // render annotations (such as comments, colors or forms)
    .password(null)
    .scrollHandle(null)
    .enableAntialiasing(true) // improve rendering a little bit on low-res screens
    // spacing between pages in dp. To define spacing color, set view background
    .spacing(0)
    .autoSpacing(false) // add dynamic spacing to fit each page on its own on the screen
    .linkHandler(DefaultLinkHandler)
    .pageFitPolicy(FitPolicy.WIDTH) // mode to fit pages in the view
    .fitEachPage(false) // fit each page to the view, else smaller pages are scaled relative to largest page.
    .pageSnap(false) // snap pages to screen boundaries
    .pageFling(false) // make a fling change only a single page like ViewPager
    .nightMode(false) // toggle night mode
    .load();

If you are using ProGuard, don't forget to add below line:

-keep class com.shockwave.**