blocks|key|1464628|text|这个解决方案通过使用简单的PdfDocument和StaticLayout来解决问题，而不使用任何外部付费库。正如我在问题中所分享的那样，问题是如何在生成的pdf文件中保持适当的文本结构。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1464629|我使用了A4大小页的长度和宽度，并将每个页面中的字符数限制在一定范围内，之后当它遇到该行的末尾时，它会自动创建下一页，同时自动下一行也由StaticLayout处理，不会出现任何文本溢出。|1464630|如果您觉得您可以尝试不同的字符限制每一页，并尝试不同的大小为您的需要。此外，您还可以尝试安卓版本Q/29及以上支持的StaticLayout.Builder，而不是低于它。|offset|length|style|BOLD|1464631|我将与您共享的代码示例，如果您使用，无论您有多长的文本，它将自动处理多页，如果文本是长的，并产生的pdf，它还维护段落等，您也可以定制页面形状，字符数量等根据您的需要。代码中的其他细节是不言而喻的。|1464632|+String+text+=+"Lorem+ipsum...very+long+text";
+ArrayList<String>+texts+=+new+ArrayList<>();
++++int+tot_char_count+=+0;
++++//Counts+total+characters+in+the+long+text
++++for+(int+i+=+0;+i+<+text.length();+i%2B%2B)+{
++++++++tot_char_count%2B%2B;
++++}
++++int+per_page_words+=+4900;
++++int+pages+=+tot_char_count+/+per_page_words;
++++int+remainder_pages_extra+=+tot_char_count+%25+per_page_words;
++++if+(remainder_pages_extra+>+0)+{
++++++++pages%2B%2B;
++++}
++++int+k+=+pages,+count+=+0;
++++while+(k+!=+0)+{
++++++++StringBuilder+each_page_text+=+new+StringBuilder();
++++++++for+(int+y+=+0;+y+<+per_page_words;+y%2B%2B)+{
++++++++++++if+(count+<+tot_char_count)+{
++++++++++++++++each_page_text.append(text.charAt(count));
++++++++++++++++if+(y+==+(per_page_words+-+1)+&&+text.charAt(count)+!=+'+')+{
++++++++++++++++++++while+(text.charAt(count)+!=+'\n')+{
++++++++++++++++++++++++count%2B%2B;
++++++++++++++++++++++++each_page_text.append(text.charAt(count));
++++++++++++++++++++}
++++++++++++++++}+else+{
++++++++++++++++++++count%2B%2B;
++++++++++++++++}
++++++++++++}
++++++++}
++++++++texts.add(each_page_text.toString());
++++++++k--;
++++}

++++PdfDocument+pdfDocument+=+new+PdfDocument();
++++int+pageNumber+=+0;
++++try+{
++++++++pageNumber%2B%2B;
++++++++for+(String+each_page_text+:+texts)+{
++++++++++++PdfDocument.PageInfo+mypageInfo+=+new+PdfDocument.PageInfo.Builder(595,+842,+pageNumber).create();
++++++++++++PdfDocument.Page+myPage+=+pdfDocument.startPage(mypageInfo);
++++++++++++Canvas+canvas+=+myPage.getCanvas();
++++++++++++TextPaint+mTextPaint+=+new+TextPaint();
++++++++++++mTextPaint.setTextSize(11);
++++++++++++mTextPaint.setTypeface(ResourcesCompat.getFont(context,+R.font.roboto));+++++++++++++++
++++++++++++StaticLayout+mTextLayout+=+new+StaticLayout(each_page_text,+mTextPaint,+canvas.getWidth()+-+60,+Layout.Alignment.ALIGN_NORMAL,+1.0f,+0.0f,+false);+++++++++++++++
++++++++++++canvas.save();
++++++++++++int+textX+=+30;
++++++++++++int+textY+=+30;
++++++++++++canvas.translate(textX,+textY);
++++++++++++mTextLayout.draw(canvas);
++++++++++++canvas.restore();
++++++++++++pdfDocument.finishPage(myPage);
++++++++}++++++++++++
++++++++File+file+=+new+File(context.getFilesDir(),+"GeneratedFile.pdf");
++++++++FileOutputStream+fOut+=+new+FileOutputStream(file);
++++++++pdfDocument.writeTo(fOut);
++++++++//++Toast.makeText(context,+"PDF+file+generated+successfully.",+Toast.LENGTH_SHORT).show();
++++}+catch+(IOException+e)+{++++++++++
++++++++e.printStackTrace();
++++}
++++pdfDocument.close();|code-block|syntax|javascript|1464633|entityMap^0|0|0|1M|K|0|0|0^^$0|@$1|2|3|4|5|6|7|S|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|T|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|U|8|@$F|V|G|W|H|I]]|9|@]|A|$]]|$1|J|3|K|5|6|7|X|8|@]|9|@]|A|$]]|$1|L|3|M|5|N|7|Y|8|@]|9|@]|A|$O|P]]|$1|Q|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|R|$]]

This solution by which I solved the problem by using simple PdfDocument and StaticLayout without using any external paid libraries. The problem as I have shared in my question is that maintaining proper structure of the texts in the generated pdf file.
I used the length and width of a A4 size page and have fixed the number of characters in each page to a limit, after that when it encounters the end of that line it automatically creates next page, also auto next line is handled by StaticLayout no overflowing of text is seen.
If you feel you can try with different character limit for each page and try different size as your need. Also you can try the StaticLayout.Builder which is supported in Android version Q/29 and above not below it.
The code sample I will share with you, which if you use, no matter how long the text you have, it will automatically handle multi page if text is long and generate the pdf, also it maintains paragraphs etc, you can also customise page shape, number of characters etc according to your need. Other details in the code are self-explanatory.
<pre><code> String text = &quot;Lorem ipsum...very long text&quot;;
 ArrayList&lt;String&gt; texts = new ArrayList&lt;&gt;();
 int tot_char_count = 0;
 //Counts total characters in the long text
 for (int i = 0; i &lt; text.length(); i++) {
 tot_char_count++;
 }
 int per_page_words = 4900;
 int pages = tot_char_count / per_page_words;
 int remainder_pages_extra = tot_char_count % per_page_words;
 if (remainder_pages_extra &gt; 0) {
 pages++;
 }
 int k = pages, count = 0;
 while (k != 0) {
 StringBuilder each_page_text = new StringBuilder();
 for (int y = 0; y &lt; per_page_words; y++) {
 if (count &lt; tot_char_count) {
 each_page_text.append(text.charAt(count));
 if (y == (per_page_words - 1) &amp;&amp; text.charAt(count) != ' ') {
 while (text.charAt(count) != '\n') {
 count++;
 each_page_text.append(text.charAt(count));
 }
 } else {
 count++;
 }
 }
 }
 texts.add(each_page_text.toString());
 k--;
 }

 PdfDocument pdfDocument = new PdfDocument();
 int pageNumber = 0;
 try {
 pageNumber++;
 for (String each_page_text : texts) {
 PdfDocument.PageInfo mypageInfo = new PdfDocument.PageInfo.Builder(595, 842, pageNumber).create();
 PdfDocument.Page myPage = pdfDocument.startPage(mypageInfo);
 Canvas canvas = myPage.getCanvas();
 TextPaint mTextPaint = new TextPaint();
 mTextPaint.setTextSize(11);
 mTextPaint.setTypeface(ResourcesCompat.getFont(context, R.font.roboto)); 
 StaticLayout mTextLayout = new StaticLayout(each_page_text, mTextPaint, canvas.getWidth() - 60, Layout.Alignment.ALIGN_NORMAL, 1.0f, 0.0f, false); 
 canvas.save();
 int textX = 30;
 int textY = 30;
 canvas.translate(textX, textY);
 mTextLayout.draw(canvas);
 canvas.restore();
 pdfDocument.finishPage(myPage);
 } 
 File file = new File(context.getFilesDir(), &quot;GeneratedFile.pdf&quot;);
 FileOutputStream fOut = new FileOutputStream(file);
 pdfDocument.writeTo(fOut);
 // Toast.makeText(context, &quot;PDF file generated successfully.&quot;, Toast.LENGTH_SHORT).show();
 } catch (IOException e) { 
 e.printStackTrace();
 }
 pdfDocument.close();
</code></pre>

I have a very long string which may be continuous without space or not continuous, and it should automatically generate pdf with with multiple pages if necessary and with proper multiline with PdfDocument.
I have tried firstly using paint but only one line with text overflowing was being printed. This problem was solved using StaticLayout and proper multiline is got but now the text gets overflown from below.
I have searched a lot but didn't exactly find one and I don't want to use iText as its only for opensource projects.

How to generate a Pdf using PdfDocument from a long string with proper multiline and multipage in android?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我有一个非常长的字符串，可以是连续的没有空间或不连续，它应该自动生成与多页，如果必要的多页，并与适当的多行与PdfDocument。我第一次尝试使用油漆，但是只有一行文字被打印出来。这个问题是用StaticLayout解决的，得到了适当的多行处理，但现在文本已经从下面超出了。我已经搜索了很多，但没有找到确切的，我不想使...

如何使用PdfDocument从具有适当多行和多页面的长字符串生成Pdf？-腾讯云开发者社区-腾讯云

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