IONIC 1 - download pdf in mobile not working:

Question

I am working on a project based on ionic 1.x .By using 'jsPDF' , I have created a PDF file. The file is downloaded when testing in browser but doesn't work when tested in an android device.

The code is as follows

var doc = new jsPDF()
doc.text(pdfstr, 10, 10)
doc.save('a4.pdf');

Thanks