以下是在外部存储中创建PDF的代码。
public class CreatePDF {
private static String FILE = "/xyz";
private static Font catFont = new Font(Font.FontFamily.TIMES_ROMAN, 18,
Font.BOLD);
private static Font redFont = new Font(Font.FontFamily.TIMES_ROMAN, 12,
Font.NORMAL, BaseColor.RED);
private static Font subFont = new Font(Font.FontFamily.TIMES_ROMAN, 16,
Font.BOLD);
private static Font smallBold = new Font(Font.FontFamily.TIMES_ROMAN, 12,
Font.BOLD);
private static Font small = new Font(Font.FontFamily.TIMES_ROMAN, 8,
Font.ITALIC);
public static final String IMG1 = Environment.getExternalStorageDirectory().getAbsolutePath() + "/xyz/logo.png";
Context context;
String payMode;
String ChecqueNo;
String chequeDate;
String BankName;
String BalAmount,planName;
String Duration;
String StartDate,EndDate,PaidAmount;
String name,recieptNo, receiptDate, memberNo, mobileNo, payamount;
String[] DATA,RecieptData,MemberDATA,plandata;
public CreatePDF(Context context) {
this.context = context;
}
public void createPDF(String ReceipData,String MemberData,String PayModdata,String PlanData,String bal)
{
plandata = PlanData.split(",");
planName=plandata[0];
Duration=plandata[1];
StartDate=plandata[2];
EndDate=plandata[3];
PaidAmount=plandata[4];
MemberDATA = MemberData.split(",");
name=MemberDATA[0];
memberNo=MemberDATA[1];
mobileNo=MemberDATA[2];
payamount=MemberDATA[3];
DATA = PayModdata.split(",");
payMode=DATA[0];
ChecqueNo=DATA[1];
chequeDate=DATA[2];
BankName=DATA[3];
BalAmount=bal;
RecieptData = ReceipData.split(",");
recieptNo=RecieptData[0];
receiptDate=RecieptData[1];
Document doc = new Document();
try {
String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/xyz";
File dir = new File(path);
if(!dir.exists())
dir.mkdirs();
Log.d("PDFCreator", "PDF Path: " + path);
DateFormat dateFormat = new SimpleDateFormat("yyyy/MM/dd_ss");
Date date = new Date();
File file = new File(dir, name+"_"+recieptNo+".pdf");
FileOutputStream fOut = new FileOutputStream(file);
try {
Document document = new Document();
PdfWriter.getInstance(document, fOut);
document.open();
addMetaData(document);
addTitlePage(document);
document.close();
} catch (Exception e) {
e.printStackTrace();
}
} catch (IOException e) {
Log.e("PDFCreator", "ioException:" + e);
} finally
{
doc.close();
}
}
private static void addMetaData(Document document) {
document.addTitle("Payment Report");
document.addSubject("Using iText");
document.addKeywords("Java, PDF, iText");
document.addAuthor("author");
document.addCreator("author");
}
private void addTitlePage(Document document)
throws IOException, DocumentException {
Paragraph preface = new Paragraph();
// We add one empty line
addEmptyLine(preface, 1);
// Lets write a big header
Paragraph p=new Paragraph("Payment Receipt", catFont);
p.setAlignment(Element.ALIGN_CENTER);
preface.add(p);
PdfPTable table55 = new PdfPTable(2);
table55.setWidthPercentage(100);
table55.setWidths(new int[]{1, 2});
Image i=Image.getInstance(IMG1);
i.scalePercent(50f);
table55.addCell(createImageCell(i));
table55.addCell(createTextCell("abc \n abc"));
document.add(table55);
Paragraph p1=new Paragraph(
"Report generated At: , " + new Date(),
smallBold);
p1.setAlignment(Element.ALIGN_CENTER);
document.add(new LineSeparator());
preface.add(p1);
addEmptyLine(preface, 1);
document.add(preface);
document.add(new LineSeparator());
document.add(Chunk.NEWLINE);
PdfPTable table = new PdfPTable(2);
table.setWidthPercentage(100);
table.addCell(getCell("Receipt No: "+recieptNo, PdfPCell.ALIGN_LEFT));
table.addCell(getCell("Receipt Date: "+receiptDate, PdfPCell.ALIGN_CENTER));
document.add(table);
document.add(Chunk.NEWLINE);
PdfPTable table1 = new PdfPTable(1);
table1.setWidthPercentage(100);
table1.addCell(getCell("Member No: "+memberNo, PdfPCell.ALIGN_LEFT));
document.add(table1);
document.add(Chunk.NEWLINE);
PdfPTable table11 = new PdfPTable(1);
table11.setWidthPercentage(100);
table11.addCell(getCell("Mobile No: "+mobileNo, PdfPCell.ALIGN_LEFT));
document.add(table11);
document.add(Chunk.NEWLINE);
PdfPTable table2 = new PdfPTable(5);
table2.setWidthPercentage(100);
table2.addCell(getBoldCell("Pay Mode: ", PdfPCell.ALIGN_LEFT));
table2.addCell(getBoldCell("Cheque No: ", PdfPCell.ALIGN_CENTER));
table2.addCell(getBoldCell("Cheque Date: ", PdfPCell.ALIGN_CENTER));
table2.addCell(getBoldCell("Amount ", PdfPCell.ALIGN_CENTER));
table2.addCell(getBoldCell("Bank Name:", PdfPCell.ALIGN_CENTER));
document.add(table2);
document.add(Chunk.NEWLINE);
document.add(new LineSeparator());
PdfPTable table2Copy = new PdfPTable(5);
table2Copy.setWidthPercentage(100);
table2Copy.addCell(getCell(payMode, PdfPCell.ALIGN_LEFT));
table2Copy.addCell(getCell(ChecqueNo, PdfPCell.ALIGN_CENTER));
table2Copy.addCell(getCell(chequeDate, PdfPCell.ALIGN_CENTER));
table2Copy.addCell(getCell("Rs. :"+payamount+" INR", PdfPCell.ALIGN_CENTER));
table2Copy.addCell(getCell(BankName, PdfPCell.ALIGN_CENTER));
document.add(table2Copy);
document.add(Chunk.NEWLINE);
PdfPTable table3 = new PdfPTable(4);
table3.setWidthPercentage(100);
table3.addCell(getBoldCell("Plan Name: ", PdfPCell.ALIGN_LEFT));
table3.addCell(getBoldCell("Duration: ", PdfPCell.ALIGN_CENTER));
//table3.addCell(getBoldCell("Paid Amount ", PdfPCell.ALIGN_CENTER));
table3.addCell(getBoldCell("Start Date:", PdfPCell.ALIGN_CENTER));
table3.addCell(getBoldCell("End Date:", PdfPCell.ALIGN_CENTER));
document.add(table3);
document.add(Chunk.NEWLINE);
document.add(new LineSeparator());
PdfPTable table3Copy = new PdfPTable(4);
table3Copy.setWidthPercentage(100);
table3Copy.addCell(getCell(planName, PdfPCell.ALIGN_LEFT));
table3Copy.addCell(getCell(Duration, PdfPCell.ALIGN_CENTER));
// table3Copy.addCell(getCell(PaidAmount, PdfPCell.ALIGN_CENTER));
table3Copy.addCell(getCell(StartDate, PdfPCell.ALIGN_CENTER));
table3Copy.addCell(getCell(EndDate, PdfPCell.ALIGN_CENTER));
document.add(table3Copy);
document.add(Chunk.NEWLINE);
Paragraph Para=new Paragraph(
"Balance Amount : Rs. "+BalAmount+" INR", //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
smallBold);
Para.setAlignment(Element.ALIGN_LEFT);
document.add(Para);
document.add(Chunk.NEWLINE);
document.add(new LineSeparator());
Paragraph ParaTsys=new Paragraph(
"name", //$NON-NLS-1$ //$NON-NLS-2$ //$NON-NLS-3$
small);
ParaTsys.setAlignment(Element.ALIGN_RIGHT);
document.add(ParaTsys);
}
public PdfPCell getCell(String text, int alignment) {
PdfPCell cell = new PdfPCell(new Phrase(text));
cell.setPadding(0);
cell.setHorizontalAlignment(alignment);
cell.setBorder(PdfPCell.NO_BORDER);
return cell;
}
public PdfPCell getBoldCell(String text, int alignment) {
Phrase f= new Phrase(text);
f.setFont(subFont);
PdfPCell cell = new PdfPCell(f);
cell.setPadding(0);
cell.setHorizontalAlignment(alignment);
cell.setBorder(PdfPCell.NO_BORDER);
return cell;
}
public static PdfPCell createImageCell(String path,int align) throws DocumentException, IOException {
Image img = Image.getInstance(path);
img.scaleAbsolute(100f, 100f);
img.setAbsolutePosition(500f, 650f);
PdfPCell cell = new PdfPCell(img, true);
cell.setHorizontalAlignment(align);
return cell;
}
private static void addEmptyLine(Paragraph paragraph, int number) {
for (int i = 0; i < number; i++) {
paragraph.add(new Paragraph(" "));
}
}
public static PdfPCell createImageCell(Image img) throws DocumentException, IOException {
PdfPCell cell = new PdfPCell(img, true);
cell.setBorder(PdfPCell.NO_BORDER);
return cell;
}
public static PdfPCell createTextCell(String text) throws DocumentException, IOException {
PdfPCell cell = new PdfPCell();
Paragraph p = new Paragraph(text);
p.setAlignment(Element.ALIGN_RIGHT);
cell.addElement(p);
cell.setVerticalAlignment(Element.ALIGN_BOTTOM);
cell.setBorder(PdfPCell.NO_BORDER);
return cell;
} }
And Call method like this
CreatePDF createPDFf= new CreatePDF(PaymentActivity.this);
createPDFf.createPDF(ReceiptData,MemberData,PayModeData,PlanData,String.valueOf(Bal));
同样方式使用Android的InBuilt Feature FILEPROVIDER为内部存储提供解决方案。
以上代码存储在外部存储中。现在几乎每部手机都有足够的内存空间，所以不需要外接。在这种情况下，我希望在创建和生成pdf之后存储和检索pdf。
请建议改变。
同样方式使用Android的InBuilt Feature FILEPROVIDER为内部存储提供解决方案
代替：
String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/xyz";
File dir = new File(path);
你会用：
File dir = new File(context.getFilesDir(), "xyz");
写入内部存储不需要FileProvider。
现在几乎每部手机都有足够的内存空间，所以不需要外接
是否使用internal storage或external storage的决定不是基于空间。内部存储和外部存储都位于大多数Android设备的同一分区上，因此它们占用的空间相同。
相反，问题是：用户是否需要通过文件管理器和类似工具独立访问此PDF文件？
如果答案为“是”，请使用外部存储。如果答案为“否”，请使用内部存储。
此外：