Java 在Android中创建PDF
我参考了这篇文章，我想用PDF打印名字和姓氏。在参考了本文之后，我对代码进行了修改，并在下面提供了我的代码 我主要是因为这些系统错误Java 在Android中创建PDF,java,android,Java,Android,我参考了这篇文章，我想用PDF打印名字和姓氏。在参考了本文之后，我对代码进行了修改，并在下面提供了我的代码 我主要是因为这些系统错误 java.lang.RuntimeException：未找到.document.is.not.open的消息 android中的com.itextpdf.text.pdf.pdfwriter.getdirectcontent（pdfwriter.java:742） 3.at.com.example.pdf.MainActivity.onClick（MainActi
java.lang.RuntimeException消息 package com.example.pdf;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.os.Bundle;
import android.os.Environment;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import com.itextpdf.text.Document;
import com.itextpdf.text.DocumentException;
import com.itextpdf.text.PageSize;
import com.itextpdf.text.Paragraph;
import com.itextpdf.text.pdf.BaseFont;
import com.itextpdf.text.pdf.PdfContentByte;
import com.itextpdf.text.pdf.PdfWriter;
public class MainActivity extends ActionBarActivity implements OnClickListener {
EditText firstName_edt;
EditText lastName_edt;
Button preView_btn;
private BaseFont bfBold;
private String filepath = "MyInvoices";
private String filename = "Sample.pdf";
private File pdfFile;
private static final String LOG_TAG = "GeneratePDF";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
/*InputStream license = this.getResources().openRawResource(R.raw.itextkey);
LicenseKey.loadLicenseFile(license);*/
firstName_edt = (EditText) (findViewById(R.id.activity_main_firstname_edt));
lastName_edt = (EditText) (findViewById(R.id.activity_main_lastname_edt));
preView_btn = (Button) (findViewById(R.id.activity_main_preview_btn));
preView_btn.setOnClickListener(this);
if (!isExternalStorageAvailable() || isExternalStorageReadOnly()) {
Log.v(LOG_TAG,
"External Storage not available or you don't have permission to write");
} else {
// path for the PDF file in the external storage
pdfFile = new File(getExternalFilesDir(filepath), filename);
}
}
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.activity_main_preview_btn:
String firstaName_str = firstName_edt.getText().toString();
String lastName_str = lastName_edt.getText().toString();
createPdf(firstaName_str, lastName_str);
break;
default:
break;
}
}
private void createPdf(String firstNAME, String lastNAME) {
// TODO Auto-generated method stub
// create file
try {
// create document
Document document = new Document(PageSize.A4.rotate(), 50, 50, 50,
50);
PdfWriter docWriter = PdfWriter.getInstance(document,
new FileOutputStream(pdfFile));
PdfContentByte cb = docWriter.getDirectContent();
document.open();
// initialize fonts
initializeFonts();
// set logo image
InputStream input = getAssets().open("ic_launcher.png");
Bitmap bitmap = BitmapFactory.decodeStream(input);
ByteArrayOutputStream stream = new ByteArrayOutputStream();
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, stream);
com.itextpdf.text.Image logo = com.itextpdf.text.Image
.getInstance(stream.toByteArray());
logo.setAbsolutePosition(25, 700);
logo.scalePercent(25);
document.add(logo);
// create paragraph
document.add(new Paragraph("Personal Details"));
document.add(new Paragraph("Name:Sachin Singh"));
document.add(new Paragraph("Address: Kolkata"));
document.add(new Paragraph("email: ash@gmail.com"));
document.add(new Paragraph("Gender:F"));
// set firstname and lastname from edittext
createHeadings(cb, 450, 135, firstNAME, lastNAME);
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
}
}
private static boolean isExternalStorageReadOnly() {
String extStorageState = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED_READ_ONLY.equals(extStorageState)) {
return true;
}
return false;
}
private static boolean isExternalStorageAvailable() {
String extStorageState = Environment.getExternalStorageState();
if (Environment.MEDIA_MOUNTED.equals(extStorageState)) {
return true;
}
return false;
}
private void initializeFonts() {
// TODO Auto-generated method stub
try {
bfBold = BaseFont.createFont(BaseFont.HELVETICA_BOLD,
BaseFont.CP1252, BaseFont.NOT_EMBEDDED);
} catch (DocumentException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
// method for setting firstname and last name
private void createHeadings(PdfContentByte cb, float x, float y,
String firstNAME, String lastNAME) {
// TODO Auto-generated method stub
cb.beginText();
cb.setFontAndSize(bfBold, 8);
cb.setTextMatrix(x, y);
cb.showText(firstNAME.trim());
cb.showText(lastNAME.trim());
cb.endText();
}
}
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="vertical" >
<EditText
android:id="@+id/activity_main_firstname_edt"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="enter first name"
android:ems="10" >
<requestFocus />
</EditText>
<EditText
android:id="@+id/activity_main_lastname_edt"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="enter last name"
android:ems="10" />
<Button
android:id="@+id/activity_main_preview_btn"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Preview" />
</LinearLayout>
logcat data
02-18 00:38:10.789: I/eFrame(32423): pkgname_before:com.example.pdf class:com.android.launcher2.Launcher
02-18 00:39:45.171: I/eFrame(32423): pkgname_before:com.sec.android.app.launcher class:com.example.pdf.MainActivity
02-18 00:39:53.159: W/System.err(32410): com.itextpdf.text.DocumentException: No message found for 1.not.found.as.resource
02-18 00:39:53.159: W/System.err(32410): at com.itextpdf.text.pdf.Type1Font.<init>(Type1Font.java:192)
02-18 00:39:53.159: W/System.err(32410): at com.itextpdf.text.pdf.BaseFont.createFont(BaseFont.java:699)
02-18 00:39:53.159: W/System.err(32410): at com.itextpdf.text.pdf.BaseFont.createFont(BaseFont.java:622)
02-18 00:39:53.159: W/System.err(32410): at com.itextpdf.text.pdf.BaseFont.createFont(BaseFont.java:457)
02-18 00:39:53.159: W/System.err(32410): at com.example.pdf.MainActivity.initializeFonts(MainActivity.java:162)
02-18 00:39:53.159: W/System.err(32410): at com.example.pdf.MainActivity.createPdf(MainActivity.java:101)
02-18 00:39:53.159: W/System.err(32410): at com.example.pdf.MainActivity.onClick(MainActivity.java:74)
02-18 00:39:53.169: W/System.err(32410): at com.itextpdf.text.pdf.PdfWriter.addSimple(PdfWriter.java:2280)
02-18 00:39:53.169: W/System.err(32410): at com.itextpdf.text.pdf.PdfContentByte.setFontAndSize(PdfContentByte.java:1704)
02-18 00:39:53.169: W/System.err(32410): at com.example.pdf.MainActivity.createHeadings(MainActivity.java:137)
02-18 00:39:53.169: W/System.err(32410): at com.example.pdf.MainActivity.createPdf(MainActivity.java:119)
02-18 00:39:53.169: W/System.err(32410): at com.example.pdf.MainActivity.onClick(MainActivity.java:74)
logcat数据
02-18 00:38:10.789:I/eFrame（32423）：pkgname_before:com.example.pdf类：com.android.Launcher.Launcher
02-18 00:39:45.171:I/eFrame（32423）：pkgname_before:com.sec.android.app.launcher class:com.example.pdf.main活动
02-18 00:39:53.159:W/System.err（32410）：com.itextpdf.text.DocumentException:未找到1.not.found.as.resource的消息
02-18 00:39:53.159:W/System.err（32410）：位于com.itextpdf.text.pdf.Type1Font.（Type1Font.java:192）
02-18 00:39:53.159:W/System.err（32410）：位于com.itextpdf.text.pdf.BaseFont.createFont（BaseFont.java:699）
02-18 00:39:53.159:W/System.err（32410）：位于com.itextpdf.text.pdf.BaseFont.createFont（BaseFont.java:622）
02-18 00:39:53.159:W/System.err（32410）：位于com.itextpdf.text.pdf.BaseFont.createFont（BaseFont.java:457）
02-18 00:39:53.159:W/System.err（32410）：位于com.example.pdf.MainActivity.initializeFonts（MainActivity.java:162）
02-18 00:39:53.159:W/System.err（32410）：位于com.example.pdf.MainActivity.createPdf（MainActivity.java:101）
02-18 00:39:53.159:W/System.err（32410）：位于com.example.pdf.MainActivity.onClick（MainActivity.java:74）
02-18 00:39:53.169:W/System.err（32410）：位于com.itextpdf.text.pdf.PdfWriter.addSimple（PdfWriter.java:2280）
02-18 00:39:53.169:W/System.err（32410）：位于com.itextpdf.text.pdf.PdfContentByte.setFontAndSize（PdfContentByte.java:1704）
02-18 00:39:53.169:W/System.err（32410）：位于com.example.pdf.MainActivity.CreateHeaders（MainActivity.java:137）
02-18 00:39:53.169:W/System.err（32410）：位于com.example.pdf.MainActivity.createPdf（MainActivity.java:119）
02-18 00:39:53.169:W/System.err（32410）：位于com.example.pdf.MainActivity.onClick（MainActivity.java:74）
// colors
private static final BaseColor colorFont = new BaseColor(51, 51, 51);
private static final BaseColor colorBlue = new BaseColor(32, 119, 215);
// fonts
private static final Font fontDefault = new Font(FontFamily.HELVETICA, 10,
Font.NORMAL, colorFont);
private static final Font fontBold = new Font(FontFamily.HELVETICA, 10,
Font.BOLD, colorFont);
private static final Font fontTitle = new Font(FontFamily.HELVETICA, 10,
Font.BOLD, colorBlue);
new Paragraph(new Chunk("Personal Details",
fontDefault))
请指出错误将出现的行…@Opiatefuchs在第94行..当调用createpdf方法时..你能发布stacktrace吗？@Opiatefuchs我对Android非常陌生..如何发布堆栈跟踪..请帮助我..你是在eclipse中开发的吗？如果是的话，在你的编码窗口下面有一个带有一些选项卡的窗口。在这个窗口中，必须有成为LogCat。你可以选择不同的消息类型。使用“错误”并复制问题。复制粘贴这些内容…….thnx，，，我尝试了你的建议..一些错误被删除了…但仍然不起作用，，，我用LogCat打印编辑了我的帖子…@user3519331我编辑了关于你字体的答案issue@user3519331，有用吗？
// colors
private static final BaseColor colorFont = new BaseColor(51, 51, 51);
private static final BaseColor colorBlue = new BaseColor(32, 119, 215);
// fonts
private static final Font fontDefault = new Font(FontFamily.HELVETICA, 10,
Font.NORMAL, colorFont);
private static final Font fontBold = new Font(FontFamily.HELVETICA, 10,
Font.BOLD, colorFont);
private static final Font fontTitle = new Font(FontFamily.HELVETICA, 10,
Font.BOLD, colorBlue);
new Paragraph(new Chunk("Personal Details",
fontDefault))