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— NFToa (@nftoa_) August 15, 2025
Hi Dev, recently I was given a challenge by a client to solve their business problems, actually they had a lot of problems, but only one made me feel challenged, which was printing the display in webview.
So far, I don't have a clear picture of the possible methods to do this, but what is certain is that it is very possible to do it, that is the conclusion I have drawn from various reference sources that I have read.
I am interested in how to utilize the PrintManager and PrintDocumentAdapter classes, but the way to run them is not easy because we cannot just rely on the main thread / ui thread, so I need to create a new job to run this task in the background (asynchronously), so as not to block the ui thread.
Here's an overview of the code.
public void createWebPagePrint(WebView webView) {
/*if (Build.VERSION.SDK_INT < Build.VERSION_CODES.KITKAT)
return;*/
PrintManager printManager = (PrintManager) getSystemService(Context.PRINT_SERVICE);
PrintDocumentAdapter printAdapter = webView.createPrintDocumentAdapter();
String jobName = getString(R.string.webapp_name) + " Document";
PrintAttributes.Builder builder = new PrintAttributes.Builder();
builder.setMediaSize(PrintAttributes.MediaSize.ISO_A5);
PrintJob printJob = printManager.print(jobName, printAdapter, builder.build());
if(printJob.isCompleted()){
Toast.makeText(getApplicationContext(), R.string.print_complete, Toast.LENGTH_LONG).show();
}
else if(printJob.isFailed()){
Toast.makeText(getApplicationContext(), R.string.print_failed, Toast.LENGTH_LONG).show();
}
// Save the job object for later status checking
}