How to Print PDF Using Android 4.4 Printing Framework

How to Print PDF using Android 4.4 Printing framework

After spend some hours on google i found the solution.

PrintManager printManager = (PrintManager) this.getSystemService(Context.PRINT_SERVICE);
String jobName = this.getString(R.string.app_name) + " Document";
printManager.print(jobName, pda, null);

PrintDocumentAdapter pda = new PrintDocumentAdapter(){

    @Override
    public void onWrite(PageRange[] pages, ParcelFileDescriptor destination, CancellationSignal cancellationSignal, WriteResultCallback callback){
        InputStream input = null;
        OutputStream output = null;

        try {

            input = new FileInputStream(file to print);
            output = new FileOutputStream(destination.getFileDescriptor());

            byte[] buf = new byte[1024];
            int bytesRead;

            while ((bytesRead = input.read(buf)) > 0) {
                 output.write(buf, 0, bytesRead);
            }

            callback.onWriteFinished(new PageRange[]{PageRange.ALL_PAGES});

        } catch (FileNotFoundException ee){
            //Catch exception
        } catch (Exception e) {
            //Catch exception
        } finally {
            try {
                input.close();
                output.close();
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }

    @Override
    public void onLayout(PrintAttributes oldAttributes, PrintAttributes newAttributes, CancellationSignal cancellationSignal, LayoutResultCallback callback, Bundle extras){

        if (cancellationSignal.isCanceled()) {
            callback.onLayoutCancelled();
            return;
        }

        PrintDocumentInfo pdi = new PrintDocumentInfo.Builder("Name of file").setContentType(PrintDocumentInfo.CONTENT_TYPE_DOCUMENT).build();

        callback.onLayoutFinished(pdi, true);
    }
};

Android implementation for PDF printing in NativeScript

printManager.print() returns a PrintJob object, which has the current print state exposed. It's not nice, but this is my workaround:

function printPDF(pdfFilePath) {

    // above code

    let printJob = printManager.print(jobName, pda, null);

    let onFinish = function(status) {
        resolve(status);
        clearInterval(interval);
    }
    let interval = setInterval(() => {
        let state = printJob.getInfo().getState();
        console.log(state);
        if (state === 6) onFinish("print failed");
        if (state === 7) onFinish("print cancelled");
        if (state === 5) onFinish("print completed");
    }, 500);
}

I might implement a timeout on the interval in the case the PrintJob state gets stuck on queued or blocked.

Android print framework - Silent print custom pdf to predetermined printer

AFAIK you cannot silent print the document in Android. There is an open issue on AOSP issue tracker.
https://code.google.com/p/android/issues/detail?id=160908.

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