PDFViewer电子书阅读器

PdfViewer是一款属性和接口全面的安卓电子书插件

地址：https://github.com/barteksc/AndroidPdfViewer

依赖：implementation 'com.github.barteksc:android-pdf-viewer:3.2.0-beta.1'

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

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();

推荐使用：

      pdfView.fromFile(new File(filePath))
                .defaultPage(0)
                .enableAntialiasing(true)
                .enableDoubletap(false)
                .onLoad(new onl oadCompleteListener() {
                    @Override
                    public void loadComplete(int nbPages) {
                        Log.d(TAG, "loadComplete: ok!");
                    }
                })
                .onRender(new OnRenderListener() {
                    @Override
                    public void onInitiallyRendered(int nbPages) {

                    }
                })
                .onPageChange(new OnPageChangeListener() {
                    @Override
                    public void onPageChanged(int page, int pageCount) {
                        Log.d(TAG, "onPageChanged: 当前是第"+page+"页  总共"+pageCount);
                    }
                })
                .onPageScroll(new OnPageScrollListener() {
                    @Override
                    public void onPageScrolled(int page, float positionOffset) {

                    }
                })
                .load();

        pdfView.fromFile(new File(filePath))
                .enableSwipe(true) // 屏幕滑动
                .enableDoubletap(false) //禁双击
                .spacing(10) //页面之间距离 dp
                .enableAntialiasing(true)
                .pageFitPolicy(FitPolicy.WIDTH) //模式来适应视图中的页面
                .pageSnap(true) //将页面对齐到屏幕边界
                .nightMode(false)
                .load();