我正在尝试在我的 Android 应用程序中生成 PDF。我使用 iText,它生成 PDF,但只显示英文字母。我找到了使用 unicode 的 iText 示例代码。我在一个简单的 comsole java 应用程序中尝试了这个示例代码,它工作得很好。这是代码:
* --> Copyright 2001 by Paulo Soares, Bruno Lowagie <--
public class Chap0903 {
public static void main(String[] args) {
System.out.println("Chapter 9 example 3: True Types (embedded)");
Document document1 = new Document();
try {
PdfWriter.getInstance(document1,
new FileOutputStream("c:\\Chap0903.pdf"));
BaseFont bfComic = BaseFont.createFont("assets/fonts/comic.ttf",
BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
Font font1 = new Font(bfComic, 12);
String text1 = "This is the quite popular True Type font 'Comic'.";
String text2 = "Some greek characters: \u0393\u0394\u03b6";
String text3 = "Some cyrillic characters: \u0418\u044f";
document1.open();
document1.add(new Paragraph(text1,font1));
document1.add(new Paragraph(text2,font1));
document1.add(new Paragraph(text3,font1));
document1.close();
}
catch(DocumentException de) {
document1.close();
System.err.println(de.getMessage());
}
catch(IOException ioe) {
document1.close();
System.err.println(ioe.getMessage());
}
}
}
当我为 Android 活动调整此代码时,它停止工作:
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
String root = Environment.getExternalStorageDirectory().getAbsolutePath();
Document document1 = new Document();
try {
PdfWriter.getInstance(document1,
new FileOutputStream(root+"/Chap0903.pdf"));
BaseFont bfComic = BaseFont.createFont("assets/fonts/comic.ttf",
BaseFont.IDENTITY_H, BaseFont.EMBEDDED);
Font font1 = new Font(bfComic, 12);
String text1 = "This is the quite popular True Type font 'Comic'.";
String text2 = "Some greek characters: \u0393\u0394\u03b6";
String text3 = "Some cyrillic characters: \u0418\u044f";
document1.open();
document1.add(new Paragraph(text1,font1));
document1.add(new Paragraph(text2,font1));
document1.add(new Paragraph(text3,font1));
document1.close();
Intent intent = new Intent();
setResult(RESULT_OK, intent);
}
catch(DocumentException de) {
document1.close();
Intent intent = new Intent();
setResult(RESULT_CANCELED, intent);
System.err.println(de.getMessage());
}
catch(IOException ioe) {
document1.close();
Intent intent = new Intent();
setResult(RESULT_CANCELED, intent);
System.err.println(ioe.getMessage());
Task.mes(ioe.getMessage());
} finally {}
}
问题不在于 Comic.ttf 文件的位置,因为如果我将路径更改为错误的路径,则会收到 IOException。问题不在于 PDF 本身的生成,因为如果我使用此代码而不使用font1
,它会在 SD 卡上生成一个 PDF 文件,但它不包含 Unicode 字符:
document1.add(new Paragraph(text1));
document1.add(new Paragraph(text2));
document1.add(new Paragraph(text3));
可能是什么问题?