我是安卓新手。我计划开发一个PDF阅读器。我听说有一个名为 iText 的库可以用来开发 PDF 查看器。请告诉我如何在 Android 中使用 iText 库以及如何使用该库开发应用程序。
try this
public class ReadAndUsePdf {
private static String INPUTFILE = "c:/temp/FirstPdf.pdf";
private static String OUTPUTFILE = "c:/temp/ReadPdf.pdf";
public static void main(String[] args) throws DocumentException,
IOException {
Document document = new Document();
PdfWriter writer = PdfWriter.getInstance(document,
new FileOutputStream(OUTPUTFILE));
document.open();
PdfReader reader = new PdfReader(INPUTFILE);
int n = reader.getNumberOfPages();
PdfImportedPage page;
// Go through all pages
for (int i = 1; i <= n; i++) {
// Only page number 2 will be included
if (i == 2) {
page = writer.getImportedPage(reader, i);
Image instance = Image.getInstance(page);
// here you can show image on your phone
}
}
document.close();
}
}