Android create and print pdf from layout view

问题

I am trying to create PDF file from xml layout view. I have a listview in that layout, adding items and setting height based on child. PDF is creating but not filling the whole page. What I have tried is,

 PdfDocument.PageInfo pageInfo = new PdfDocument.PageInfo.Builder(2250, 1400, 1).create();

        // start a page
        PdfDocument.Page page = document.startPage(pageInfo);


        // draw something on the page
        LayoutInflater inflater = (LayoutInflater)
                getSystemService(Context.LAYOUT_INFLATER_SERVICE);
        View content = inflater.inflate(R.layout.pdf_layout, null);

        content.measure(2250, 1400);
        content.layout(0,0, 2250, 1400);

        tvName = (TextView)content.findViewById(R.id.tvName);
        tvDate = (TextView)content.findViewById(R.id.tvDate);
        tvAge = (TextView)content.findViewById(R.id.tvAge);
        tvGender = (TextView)content.findViewById(R.id.tvGender);
        tvPhone = (TextView)content.findViewById(R.id.tvPhone);
        lvList = (ListView)content.findViewById(R.id.lvList);
        lvList.setAdapter(adapter);
        Utils.setListViewHeight(lvList, CreatePDFDemo.this);

        tvName.setText(name);
        tvAge.setText(age + "Y");
        tvGender.setText(gender);
        tvPhone.setText(phone);

        content.draw(page.getCanvas());

        // finish the page
        document.finishPage(page);
        // add more pages
        // write the document content
        try {
            document.writeTo(output);
        } catch (IOException e) {
            e.printStackTrace();
        }

This its output is like this image,

How can I write layout view covering full width of pdf page?

回答1:

Change to this,

        int measureWidth = View.MeasureSpec.makeMeasureSpec(page.getCanvas().getWidth(), View.MeasureSpec.EXACTLY);
        int measuredHeight = View.MeasureSpec.makeMeasureSpec(page.getCanvas().getHeight(), View.MeasureSpec.EXACTLY);

        content.measure(measureWidth, measuredHeight);
        content.layout(0, 0, page.getCanvas().getWidth(), page.getCanvas().getHeight());

This will get page full height and width.

回答2:

Use [PrintContent] (https://developer.android.com/reference/android/support/v4/print/PrintHelper.html)!

 // Get the print manager.
PrintHelper printHelper = new PrintHelper(this);

// Set the desired scale mode.
printHelper.setScaleMode(PrintHelper.SCALE_MODE_FIT);

// Get the bitmap for the ImageView's drawable.
Bitmap bitmap = ((BitmapDrawable) mImageView.getDrawable()).getBitmap();

// Print the bitmap.
printHelper.printBitmap("Print Bitmap", bitmap);

回答3:

Try to convert your layout into image then set that image to PDF. read this, maybe you will get some idea. Convert view to PDF

来源：https://stackoverflow.com/questions/43699638/android-create-and-print-pdf-from-layout-view