Bluetooth and WIFI Printing for Android

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Starting with Android 4.4 you can print documents from a device to a hardware printer via wifi.

Android apps can now print any type of content over Wi-Fi or cloud-hosted services such as Google Cloud Print. In print-enabled apps, users can discover available printers, change paper sizes, choose specific pages to print, and print almost any kind of document, image, or file.

A brief example of how to start the printing process:

private void doPrint() {
    PrintManager printManager = (PrintManager) getActivity().getSystemService(Context.PRINT_SERVICE);
    printManager.print("My document", new CustomPrintDocumentAdapter(getActivity()), null);
}

where CustomPrintDocumentAdapter extends PrintDocumentAdapter.

More information is available on Android Developers.

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