I'm trying to create a PDF from an inflated xml layout. Within this layout there is a ListView which I want to fill with items and then print everything to PDF.
Here is the code:
List<PersonData> personDataList = getListfromDataBase();
LayoutInflater inflater = (LayoutInflater) context.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View view = inflater.inflate(R.layout.pdf_print_container, null);
//Start new PDF-Document
PdfDocument document = new PdfDocument();
PdfDocument.PageInfo pageInfo = new PdfDocument.PageInfo.Builder(595, 842, 1).create();
PdfDocument.Page page = document.startPage(pageInfo);
//https://stackoverflow.com/questions/43699638/android-create-and-print-pdf-from-layout-view
int measureWidth = View.MeasureSpec.makeMeasureSpec(page.getCanvas().getWidth(), View.MeasureSpec.EXACTLY);
int measuredHeight = View.MeasureSpec.makeMeasureSpec(page.getCanvas().getHeight(), View.MeasureSpec.EXACTLY);
view.measure(measureWidth, measuredHeight);
view.layout(0, 0, page.getCanvas().getWidth(), page.getCanvas().getHeight());
//get the ListView where to add the items
ListView listView = view.findViewById(R.id.pdf_listview_for_items);
//Create the Adapter
PdfArrayAdapter pdfArrayAdapter = new PdfArrayAdapter(view.getContext(), personDataList);
//set the adapter to the listView
listView.setAdapter(pdfArrayAdapter);
//Draw the view to the pdf page, and write it
view.draw(page.getCanvas());
document.finishPage(page);
document.writeTo(new FileOutputStream(filePath + ".pdf"));
Here is the parent XML including the ListView:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<TextView
android:id="@+id/textView11"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Page Headline and some more Information"/>
<ListView
android:id="@+id/pdf_listview_for_items"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical" />
</LinearLayout>
Here ist the XML for the items:
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:id="@+id/pdf_print_station_one"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="TextView" />
<!-- and some more text views-->
</LinearLayout>
And the ArrayAdapter:
public class PdfArrayAdapter extends ArrayAdapter {
public PdfArrayAdapter(Context context, List <PersonData> personDataList) {
super(context, 0, personDataList);
}
@NonNull
@Override
public View getView(int position, @Nullable View convertView, @NonNull ViewGroup parent) {
if (convertView == null) {
convertView = LayoutInflater.from(getContext()).inflate(R.layout.pdf_print_item, parent, false);
}
PersonData personData = (PersonData) getItem(position);
TextView stationone = convertView.findViewById(R.id.pdf_print_station_one);
stationone.setText(personData.getStationonetime());
//And some more TextViews
return convertView;
}
}
I get an A4 page with the Headline-Text including the empty ListView (checked it by changing backgroundcolor) but without items. Debugging the ArrayAdapter shows that getView() is not called after setting the Adapter.
changing the ListView to a LinearLayout and adding the items with:
LinearLayout linearlayout = view.findViewById(R.id.pdf_linerlayout_for_items);
for (int i = 0; i < pdfArrayAdapter.getCount(); i++) {
linearlayout.addView(pdfArrayAdapter.getView(i, null, linearlayout));
}
results in calling getView but does not change anything in the pdf. The code is called from an async task because of the database call.
