Aandroid pdf viewer native
June 8, 2016
Android pdf viewer Without any library using android PdfRenderer class to view pdf file on android version api 19+.
Android View XML file
Activity.package com.tt.sharedprint; import java.io.File; import java.io.IOException; import android.app.Activity; import android.app.ProgressDialog; import android.content.Context; import android.graphics.Bitmap; import android.graphics.pdf.PdfRenderer; import android.os.Bundle; import android.os.ParcelFileDescriptor; import android.print.PrintManager; import android.view.Menu; import android.view.MenuItem; import android.view.View; import android.webkit.WebView; import android.widget.Button; import android.widget.Toast; import com.androidquery.AQuery; import com.androidquery.callback.AjaxCallback; import com.androidquery.callback.AjaxStatus; import com.tt.sharedprint.customview.CustomPrintDocumentAdapter; import com.tt.sharedprint.customview.TouchImageView; public class ViewActivity extends Activity implements View.OnClickListener{//PdfViewerActivity WebView webView1; AQuery aq; ProgressDialog prgDialog; String url = "http://kaushalprajapati.net/wp-content/uploads/2016/12/test.pdf";// "http://programmerguru.com/android-tutorial/wp-content/uploads/2014/01/jai_ho.mp3"; // String url = "https://ttdrive.s3-us-west-2.amazonaws.com/277/CUT%20OF%20MARKS%20ENGINEERING.pdf?AWSAccessKeyId=AKIAJUIU5SYUB6NPS2LQ&Expires=1465305646&Signature=HPRUsmKaBs8KWpJKi7sQmqlbQBg%3D"; // String url = "https://ttdrive.s3-us-west-2.amazonaws.com/277/D_19.PDF?AWSAccessKeyId=AKIAJUIU5SYUB6NPS2LQ&Expires=1465305860&Signature=NrqVGbOeNoVPj9YaB%2FD%2F4Md%2F7KE%3D"; /** * Key string for saving the state of current page index. */ private static final String STATE_CURRENT_PAGE_INDEX = "current_page_index"; /** * File descriptor of the PDF. */ private ParcelFileDescriptor mFileDescriptor; /** * {@link android.graphics.pdf.PdfRenderer} to render the PDF. */ private PdfRenderer mPdfRenderer; /** * Page that is currently shown on the screen. */ private PdfRenderer.Page mCurrentPage; /** * {@link android.widget.ImageView} that shows a PDF page as a {@link android.graphics.Bitmap} */ private ImageView mImageView; /** * {@link android.widget.Button} to move to the previous page. */ private Button mButtonPrevious; /** * {@link android.widget.Button} to move to the next page. */ private Button mButtonNext; Activity activity; int index = 0; File fileObj; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_view); activity = this; /*String myPdfUrl = "http://kaushalprajapati.net/wp-content/uploads/2016/12/test.pdf"; String url = "http://docs.google.com/gview?embedded=true&url=" + myPdfUrl; Log.i("", "Opening PDF: " + url); webView1.getSettings().setJavaScriptEnabled(true); webView1.loadUrl(url);*/ // File ext = Environment.getExternalStorageDirectory(); // File target = new File(ext, "pgfolder/jai_ho.mp3"); // ProgressDialog prgDialog = new ProgressDialog(this); // prgDialog.setMessage("Downloading MP3 from Internet. Please wait..."); // prgDialog.setIndeterminate(false); // prgDialog.setMax(100); // prgDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); // prgDialog.setCancelable(false); aq = new AQuery(this); aq.id(R.id.btnProgressBar).clicked(this, "downloadSongandPlay"); mImageView = (TouchImageView) findViewById(R.id.image); mButtonPrevious = (Button) findViewById(R.id.previous); mButtonNext = (Button) findViewById(R.id.next); // Bind events. mButtonPrevious.setOnClickListener(this); mButtonNext.setOnClickListener(this); // Show the first page by default. // If there is a savedInstanceState (screen orientations, etc.), we restore the page index. if (null != savedInstanceState) { index = savedInstanceState.getInt(STATE_CURRENT_PAGE_INDEX, 0); } } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.image_print, menu); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { // Handle action bar item clicks here. The action bar will // automatically handle clicks on the Home/Up button, so long // as you specify a parent activity in AndroidManifest.xml. int id = item.getItemId(); if (id == R.id.action_settings) { try { if(fileObj!=null){ PrintManager printManager = (PrintManager)getSystemService(Context.PRINT_SERVICE); String jobName = " Document"; CustomPrintDocumentAdapter pda = new CustomPrintDocumentAdapter(fileObj); // new PrintAttributes.Builder().setMediaSize(MediaSize.ISO_A4); printManager.print(jobName, pda, null); } } catch (Exception e) { // TODO: handle exception } return true; } return super.onOptionsItemSelected(item); } @Override protected void onResume() { // TODO Auto-generated method stub super.onResume(); } @Override protected void onPause() { // TODO Auto-generated method stub super.onPause(); } @Override protected void onDestroy() { try { closeRenderer(); } catch (IOException e) { e.printStackTrace(); } super.onDestroy(); } @Override public void onBackPressed() { super.onBackPressed(); } @Override public void onSaveInstanceState(Bundle outState) { super.onSaveInstanceState(outState); if (null != mCurrentPage) { outState.putInt(STATE_CURRENT_PAGE_INDEX, mCurrentPage.getIndex()); } } // AQuery button click callback method public void downloadSongandPlay(View v) { // Mp3 file location in SD card // File file = new File(Environment.getExternalStorageDirectory().getPath()+"/pgfolder/test.pdf"); File file = new File(getCacheDir()+"/pgfolder/test.pdf", "MyCache"); deleteRecursive(file); // Get SD card location File ext = new File(getCacheDir(), "MyCache");//Environment.getExternalStorageDirectory(); // Target location where downloaded file to be stored File target = new File(ext, "/pgfolder/test.pdf"); // Disable button in order to avoid multiple button hits aq.id(R.id.btnProgressBar).enabled(false); // When Mp3 File exists under SD card if (file.exists()) { // Toast.makeText(getApplicationContext(), "File already exist under SD card, playing Music", Toast.LENGTH_LONG).show(); // Intent intent = new Intent(this, PdfViewer.class); // Uri URL = Uri.fromFile(file); // intent.putExtra(PdfViewer.EXTRA_PDFFILENAME, file.getAbsoluteFile().getPath() ); // startActivity(intent); try { openRenderer(activity,file); } catch (IOException e) { e.printStackTrace(); Toast.makeText(activity, "Error! " + e.getMessage(), Toast.LENGTH_SHORT).show(); finish(); } showPage(index); // If the Music File doesn't exist in SD card (Not yet downloaded) } else { Toast.makeText(getApplicationContext(), "File doesn't exist under SD Card, downloading Mp3 from Internet", Toast.LENGTH_LONG).show(); prgDialog = new ProgressDialog(this); // Instantiate Progress Dialog Bar prgDialog.setMessage("Downloading MP3 from Internet. Please wait..."); // Set Progress Dialog Bar message prgDialog.setIndeterminate(false); prgDialog.setMax(100); // Progress Bar max limit prgDialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL); // Progress Bar style prgDialog.setCancelable(false); // Progress Bar cannot be cancelable // Display progress dialog bar and initiate download of Mp3 file aq.progress(prgDialog).download(url, target, new AjaxCallback() { // Once download is complete public void callback(String url, File file, AjaxStatus status) { // If file does exist if (file != null) { // Intent intent = new Intent(ViewActivity.this, PdfViewer.class); // Uri URL = Uri.fromFile(file); // intent.putExtra(PdfViewer.EXTRA_PDFFILENAME, URL); // intent.putExtra(PdfViewer.EXTRA_PDFFILENAME, file.getAbsoluteFile().getPath()); // Log.d("URL", "URL " + URL); // Log.d("URL", "URL " + file.getAbsoluteFile()); // startActivity(intent); try { fileObj = file; openRenderer(activity,file); } catch (IOException e) { e.printStackTrace(); Toast.makeText(activity, "Error! " + e.getMessage(), Toast.LENGTH_SHORT).show(); finish(); } showPage(index); // playMusic(); // If file doesn't exist display error message } else { Toast.makeText(aq.getContext(), "Error occured: Status" + status, Toast.LENGTH_SHORT).show(); } } }); } } void deleteRecursive(File fileOrDirectory) { if (fileOrDirectory.isDirectory()) for (File child : fileOrDirectory.listFiles()) deleteRecursive(child); fileOrDirectory.delete(); } //////////////////////////////////////////////////// /** * Sets up a {@link android.graphics.pdf.PdfRenderer} and related resources. */ private void openRenderer(Context context, File file) throws IOException { // In this sample, we read a PDF from the assets directory. // mFileDescriptor = context.getAssets().open("sample.pdf").getParcelFileDescriptor(); // This is the PdfRenderer we use to render the PDF. // mPdfRenderer = new PdfRenderer(mFileDescriptor); // File file = new FileUtils().fileFromAsset(context, "test.pdf"); mFileDescriptor = ParcelFileDescriptor.open(file,ParcelFileDescriptor.MODE_READ_ONLY); mPdfRenderer = new PdfRenderer(mFileDescriptor); } /** * Closes the {@link android.graphics.pdf.PdfRenderer} and related resources. * * @throws java.io.IOException When the PDF file cannot be closed. */ private void closeRenderer() throws IOException { if (null != mCurrentPage) { mCurrentPage.close(); } mPdfRenderer.close(); mFileDescriptor.close(); } /** * Shows the specified page of PDF to the screen. * * @param index The page index. */ private void showPage(int index) { if (mPdfRenderer.getPageCount() <= index) { return; } // Make sure to close the current page before opening another one. if (null != mCurrentPage) { mCurrentPage.close(); } // Use `openPage` to open a specific page in PDF. mCurrentPage = mPdfRenderer.openPage(index); // Important: the destination bitmap must be ARGB (not RGB). Bitmap bitmap = Bitmap.createBitmap(mCurrentPage.getWidth(), mCurrentPage.getHeight(), Bitmap.Config.ARGB_8888); // Here, we render the page onto the Bitmap. // To render a portion of the page, use the second and third parameter. Pass nulls to get // the default result. // Pass either RENDER_MODE_FOR_DISPLAY or RENDER_MODE_FOR_PRINT for the last parameter. mCurrentPage.render(bitmap, null, null, PdfRenderer.Page.RENDER_MODE_FOR_DISPLAY); // We are ready to show the Bitmap to user. mImageView.setImageBitmap(bitmap); updateUi(); } /** * Updates the state of 2 control buttons in response to the current page index. */ private void updateUi() { int index = mCurrentPage.getIndex(); int pageCount = mPdfRenderer.getPageCount(); mButtonPrevious.setEnabled(0 != index); mButtonNext.setEnabled(index + 1 < pageCount); setTitle(getString(R.string.app_name_with_index, index + 1, pageCount)); } /** * Gets the number of pages in the PDF. This method is marked as public for testing. * * @return The number of pages. */ public int getPageCount() { return mPdfRenderer.getPageCount(); } @Override public void onClick(View view) { switch (view.getId()) { case R.id.previous: { // Move to the previous page showPage(mCurrentPage.getIndex() - 1); break; } case R.id.next: { // Move to the next page showPage(mCurrentPage.getIndex() + 1); break; } } } } </pre>
About The Author
Kaushal Prajapati
Software Developer in android,java,phone gap,angular js etc interested in challenging work in problem solving.