How to open PDF file in Android or Android Studio

Are you making app open pdf file ,here is the sample code that you can integrate in your app make great.

First create PDFTools.java file in Src folder, and paste this code

public class PDFTools {
private static final String GOOGLE_DRIVE_PDF_READER_PREFIX = "http://drive.google.com/viewer?url=";
private static final String PDF_MIME_TYPE = "application/pdf";
private static final String HTML_MIME_TYPE = "text/html";
static Context mcontext;

/**
* If a PDF reader is installed, download the PDF file and open it in a
* reader. Otherwise ask the user if he/she wants to view it in the Google
* Drive online PDF reader.<br />
* <br />
* <b>BEWARE:</b> This method
* @param context
* @param pdfUrl
* @return
*/
public static void showPDFUrl(final Context context, final String pdfUrl) {
mcontext=context;
if (isPDFSupported(mcontext)) {
downloadAndOpenPDF(mcontext, pdfUrl);
} else {
askToOpenPDFThroughGoogleDrive(mcontext, pdfUrl);
}
}

/**
* Downloads a PDF with the Android DownloadManager and opens it with an
* installed PDF reader app.
* @param context
* @param pdfUrl
*/
@TargetApi(Build.VERSION_CODES.GINGERBREAD)
public static void downloadAndOpenPDF(final Context context, final String pdfUrl) {
// Get filename
final String filename = pdfUrl.substring(pdfUrl.lastIndexOf("/") + 1);
// The place where the downloaded PDF file will be put
final File tempFile = new File(context.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS), filename);
if (tempFile.exists()) {
// If we have downloaded the file before, just go ahead and show it.
openPDF(context, Uri.fromFile(tempFile));
return;
}

// Show progress dialog while downloading
final ProgressDialog progress = ProgressDialog.show(context, context.getString(R.string.pdf_show_local_progress_title),
context.getString(R.string.pdf_show_local_progress_content), true);

// Create the download request
DownloadManager.Request r = new DownloadManager.Request(Uri.parse(pdfUrl));
r.setDestinationInExternalFilesDir(context, Environment.DIRECTORY_DOWNLOADS, filename);
final DownloadManager dm = (DownloadManager) context.getSystemService(Context.DOWNLOAD_SERVICE);
BroadcastReceiver onComplete = new BroadcastReceiver() {
@Override
public void onReceive(Context context, Intent intent) {
if (!progress.isShowing()) {
return;
}
context.unregisterReceiver(this);

progress.dismiss();
long downloadId = intent.getLongExtra(DownloadManager.EXTRA_DOWNLOAD_ID, -1);
Cursor c = dm.query(new DownloadManager.Query().setFilterById(downloadId));

if (c.moveToFirst()) {
int status = c.getInt(c.getColumnIndex(DownloadManager.COLUMN_STATUS));
if (status == DownloadManager.STATUS_SUCCESSFUL) {
openPDF(context, Uri.fromFile(tempFile));
}
}
c.close();
}
};
context.registerReceiver(onComplete, new IntentFilter(DownloadManager.ACTION_DOWNLOAD_COMPLETE));

// Enqueue the request
dm.enqueue(r);
}

/**
* Show a dialog asking the user if he wants to open the PDF through Google
* Drive
* @param context
* @param pdfUrl
*/
public static void askToOpenPDFThroughGoogleDrive(final Context context, final String pdfUrl) {
new AlertDialog.Builder(context).setTitle(R.string.pdf_show_online_dialog_title).setMessage(R.string.pdf_show_online_dialog_question)
.setNegativeButton(R.string.pdf_show_online_dialog_button_no, null).setPositiveButton(R.string.pdf_show_online_dialog_button_yes, new OnClickListener() {
public void onClick(DialogInterface dialog, int which) {
openPDFThroughGoogleDrive(context, pdfUrl);
}
}).show();
}

/**
* Launches a browser to view the PDF through Google Drive
* @param context
* @param pdfUrl
*/
public static void openPDFThroughGoogleDrive(final Context context, final String pdfUrl) {
Intent i = new Intent(Intent.ACTION_VIEW);
i.setDataAndType(Uri.parse(GOOGLE_DRIVE_PDF_READER_PREFIX + pdfUrl), HTML_MIME_TYPE);
context.startActivity(i);
}

/**
* Open a local PDF file with an installed reader
* @param context
* @param localUri
*/
public static final void openPDF(Context context, Uri localUri) {
Intent i = new Intent(Intent.ACTION_VIEW);
i.setDataAndType(localUri, PDF_MIME_TYPE);
context.startActivity(i);
}

/**
* Checks if any apps are installed that supports reading of PDF files.
* @param context
* @return
*/
public static boolean isPDFSupported(Context context) {
Intent i = new Intent(Intent.ACTION_VIEW);
final File tempFile = new File(context.getExternalFilesDir(Environment.DIRECTORY_DOWNLOADS), "test.pdf");
i.setDataAndType(Uri.fromFile(tempFile), PDF_MIME_TYPE);
return context.getPackageManager().queryIntentActivities(i, PackageManager.MATCH_DEFAULT_ONLY).size() > 0;
}

}

Now, wherever you want to open pdf file onclick of button or images, make like this


btnPDF.setOnClickListener(new OnClickListener() {

@Override
public void onClick(View v) {

String pdfUrl = "pdfurl";
if (PDFTools.isPDFSupported(context)) {
PDFTools.showPDFUrl(context, pdfUrl);
} else {
                                  Toast.makeText(context, "Please Download PDF Reader",Toast.LENGTH_SHORT).show();

}

}
});

Finally, your pdf will be open.
How to open PDF file in Android or Android Studio How to open PDF file in Android or Android Studio Reviewed by D Kshetri on 1:12 PM Rating: 5

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