I am using itext library , i am not able to write pdf in emulator sdcard even though i code seem from my point of view what is problem i could not find out and yes i have also add the write external storage permission. It give me file not found exception ,
try
{
String path = Environment.getExternalStorageDirectory()+"/Hello/";
File file = new File(path+"hello.pdf");
System.out.println(file.toString());
if(!file.exists()){
file.getParentFile().mkdirs();
try {
file.createNewFile();
}
catch (IOException e)
{
// TODO Auto-generated catch block e.printStackTrace(); }
}
}
Document document = new Document();
PdfWriter.getInstance(document, new FileOutputStream(Environment.getExternalStorageDirectory()
+File.separator
+"Hello" //folder name
+File.separator
+"hello.pdf"));
document.open();
document.add(new Paragraph("hello"));
document.close();
File path = new File (Environment.getExternalStorageDirectory(),"Hello");
if (!path.exists()) {
path.mkdir();
}
File file = new File(path, "hello.pdf");
System.out.println(file.toString());
Document document = new Document();
PdfWriter.getInstance(document, new FileOutputStream(file);
document.open();
document.add(new Paragraph("hello");
document.close();
Related
I am trying to save data into text file in the internal storage and read it again .. It works fine in my mobile with android 11 but when i tried at android 8 it gives me this error
java.io.FileNotFoundException:/data/user/0/com.example.example/test.txt
(No such file or directory)
It appears at the first time to open the activity but i can clear it - as normal text - and write a new text and save it so the file is there and usable
here is read code
File path = getApplicationContext().getFilesDir();
File readFrom = new File(path, fileName);
byte[] content = new byte[(int) readFrom.length()];
try {
FileInputStream stream = new FileInputStream(readFrom);
stream.read(content);
return new String(content);
} catch (Exception e) {
e.printStackTrace();
return e.toString();
}
and this write code
public void writeToFile(String fileName, String content) {
File path = getApplicationContext().getFilesDir();
try {
FileOutputStream writer = new FileOutputStream(new File(path, fileName));
writer.write(content.getBytes());
writer.close();
} catch (IOException e) {
e.printStackTrace();
}
}
I am trying to create an PDF using android.graphics.pdf. My issue is with multiple pages. I can give android.graphics.pdf html which could be then printed to a PDF. Now that doesn't work if text overflows the set page size. Is it possible to give it all the html and it would create multiple pages according to the content with respect to the page size? As does TCPDF :)
Note. I am trying to avoid creating separate multiple pages by calculating the height of the content.
For this you'll need to add the jar of iTextG to your project:
public void createandDisplayPdf(String text) {
Document doc = new Document();
try {
String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/Dir";
File dir = new File(path);
if(!dir.exists())
dir.mkdirs();
File file = new File(dir, "newFile.pdf");
FileOutputStream fOut = new FileOutputStream(file);
PdfWriter.getInstance(doc, fOut);
//open the document
doc.open();
Paragraph p1 = new Paragraph(text);
Font paraFont= new Font(Font.COURIER);
p1.setAlignment(Paragraph.ALIGN_CENTER);
p1.setFont(paraFont);
//add paragraph to document
doc.add(p1);
} catch (DocumentException de) {
Log.e("PDFCreator", "DocumentException:" + de);
} catch (IOException e) {
Log.e("PDFCreator", "ioException:" + e);
}
finally {
doc.close();
}
viewPdf("newFile.pdf", "Dir");
}
// Method for opening a pdf file
private void viewPdf(String file, String directory) {
File pdfFile = new File(Environment.getExternalStorageDirectory() + "/" + directory + "/" + file);
Uri path = Uri.fromFile(pdfFile);
// Setting the intent for pdf reader
Intent pdfIntent = new Intent(Intent.ACTION_VIEW);
pdfIntent.setDataAndType(path, "application/pdf");
pdfIntent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);
try {
startActivity(pdfIntent);
} catch (ActivityNotFoundException e) {
Toast.makeText(TableActivity.this, "Can't read pdf file", Toast.LENGTH_SHORT).show();
}
}
In my application, I want to create a text file in the cache folder and first what I do is create a folder in the cache directory.
File myDir = new File(getCacheDir(), "MySecretFolder");
myDir.mkdir();
Then I want to create a text file in that created folder using the following code that doesn't seem to make it there. Instead, the code below creates the text file in the "files" folder that is in the same directory as the "cache" folder.
FileOutputStream fOut = null;
try {
fOut = openFileOutput("secret.txt",MODE_PRIVATE);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
String str = "data";
try {
fOut.write(str.getBytes());
} catch (IOException e) {
e.printStackTrace();
}
try {
fOut.close();
} catch (IOException e) {
e.printStackTrace();
}
SO my question is, how do I properly designate the "MySecretFolder" to make the text file in?
I have tried the following:
"/data/data/com.example.myandroid.cuecards/cache/MySecretFolder", but it crashes my entire app if I try that. How should I properly save the text file in the cache/MySecretFolder?
use getCacheDir(). It returns the absolute path to the application-specific cache directory on the filesystem. Then you can create your directory
File myDir = new File(getCacheDir(), "folder");
myDir.mkdir();
Please try this maybe helps you.
Ok, If you want to create the TextFile in Specific Folder then You can try to below code.
try {
String rootPath = Environment.getExternalStorageDirectory()
.getAbsolutePath() + "/MyFolder/";
File root = new File(rootPath);
if (!root.exists()) {
root.mkdirs();
}
File f = new File(rootPath + "mttext.txt");
if (f.exists()) {
f.delete();
}
f.createNewFile();
FileOutputStream out = new FileOutputStream(f);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
}
Just change
fOut = openFileOutput("secret.txt",MODE_PRIVATE);
to
fOut = openFileOutput(myDir+"/secret.txt",MODE_PRIVATE);
This will make secret.txt under MySecretFolder
getPrivateDir will create a folder in your private area (Context.MODE_WORLD_WRITEABLE- use what suits you from Context.MODE_...)
public File getPrivateDir(String name)
{
return context.getDir(name, Context.MODE_WORLD_WRITEABLE);
}
openPrivateFileInput will create a file if it doesn't exist in your private folder in files directory and return a FileInputStream :
/data/data/your.packagename/files
Your application private folder is in
/data/data/your.packagename
public FileInputStream openPrivateFileInput(String name) throws FileNotFoundException
{
return context.openFileInput(name);
}
If you package name is uno.due.com your app private folder is:
/data/data/uno.due.com
All directories underneath are weather created by you or by android for you. When you create a file as above it will go under:
/data/data/uno.due.com/files
Simple and easy code to create folder, file and write/append into the file
try {
String path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/newfoldername/"; // it will return root directory of internal storage
File root = new File(path);
if (!root.exists()) {
root.mkdirs(); // create folder if not exist
}
File file = new File(rootPath + "log.txt");
if (!file.exists()) {
file.createNewFile(); // create file if not exist
}
BufferedWriter buf = new BufferedWriter(new FileWriter(file, true));
buf.append("hi this will write in to file");
buf.newLine(); // pointer will be nextline
buf.close();
}
catch (Exception e) {
e.printStackTrace();
}
NOTE: It needs the Android External Storage Permission so add below line in AndroidManifest.xml
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"></uses-permission>
I am working on a method that writes an XML file to the device. I've allowed external storage in the manifest file, but I can't find the file at the location it should be.
Here is my code:
public static void write (){
Serializer serial = new Persister();
File sdcardFile = new File("/Prueba/file.xml");
Item respuestas = new Item();
try {
serial.write(respuestas, sdcardFile);
} catch (Exception e) {
// There is the possibility of error for a number of reasons. Handle this appropriately in your code
e.printStackTrace();
}
Log.i(TAG, "XML Written to File: " + sdcardFile.getAbsolutePath());
}
}
Sdcard File path problem. Here is an exaple that write string in file.xml file.
File myFile = new File("/sdcard/file.xml");
try {
File myFile = new File("/sdcard/file.xml");
myFile.createNewFile();
FileOutputStream fOut = new FileOutputStream(myFile);
OutputStreamWriter myOutWriter =
new OutputStreamWriter(fOut);
myOutWriter.append("encodedString");
myOutWriter.close();
fOut.close();
} catch (Exception e) {
}
You able to get External Storage name by this way,
String root = Environment.getExternalStorageDirectory().toString();
How can I create file.txt and insert data on file with content of some of variable on my code for example : population [][]; on Android, so there will be folder files on our package in file explorer (data/data/ourpackage/files/ourfiles.txt) Thank You
Using this code you can write to a text file in the SDCard.
Along with it, you need to set a permission in the Android Manifest.
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />
This is the code :
public void generateNoteOnSD(Context context, String sFileName, String sBody) {
try {
File root = new File(Environment.getExternalStorageDirectory(), "Notes");
if (!root.exists()) {
root.mkdirs();
}
File gpxfile = new File(root, sFileName);
FileWriter writer = new FileWriter(gpxfile);
writer.append(sBody);
writer.flush();
writer.close();
Toast.makeText(context, "Saved", Toast.LENGTH_SHORT).show();
} catch (IOException e) {
e.printStackTrace();
}
}
Before writing files you must also check whether your SDCard is mounted & the external storage state is writable.
Environment.getExternalStorageState()
Check the android documentation. It's in fact not much different than standard java io file handling so you could also check that documentation.
An example from the android documentation:
String FILENAME = "hello_file";
String string = "hello world!";
FileOutputStream fos = openFileOutput(FILENAME, Context.MODE_PRIVATE);
fos.write(string.getBytes());
fos.close();
If you want to create a file and write and append data to it many times, then use the below code, it will create file if not exits and will append data if it exists.
SimpleDateFormat formatter = new SimpleDateFormat("yyyy_MM_dd");
Date now = new Date();
String fileName = formatter.format(now) + ".txt";//like 2016_01_12.txt
try
{
File root = new File(Environment.getExternalStorageDirectory()+File.separator+"Music_Folder", "Report Files");
//File root = new File(Environment.getExternalStorageDirectory(), "Notes");
if (!root.exists())
{
root.mkdirs();
}
File gpxfile = new File(root, fileName);
FileWriter writer = new FileWriter(gpxfile,true);
writer.append(sBody+"\n\n");
writer.flush();
writer.close();
Toast.makeText(this, "Data has been written to Report File", Toast.LENGTH_SHORT).show();
}
catch(IOException e)
{
e.printStackTrace();
}
First create a Project With PdfCreation in Android Studio
Then Follow below steps:
1.Download itextpdf-5.3.2.jar library from this link [https://sourceforge.net/projects/itext/files/iText/iText5.3.2/][1] and then
2.Add to app>libs>itextpdf-5.3.2.jar
3.Right click on jar file then click on add to library
4. Document document = new Document(PageSize.A4); // Create Directory in External Storage
String root = Environment.getExternalStorageDirectory().toString();
File myDir = new File(root + "/PDF");
System.out.print(myDir.toString());
myDir.mkdirs(); // Create Pdf Writer for Writting into New Created Document
try {
PdfWriter.getInstance(document, new FileOutputStream(FILE));
} catch (DocumentException e) {
e.printStackTrace();
} catch (FileNotFoundException e) {
e.printStackTrace();
} // Open Document for Writting into document
document.open(); // User Define Method
addMetaData(document);
try {
addTitlePage(document);
} catch (DocumentException e) {
e.printStackTrace();
} // Close Document after writting all content
document.close();
5. public void addMetaData(Document document)
{
document.addTitle("RESUME");
document.addSubject("Person Info");
document.addKeywords("Personal, Education, Skills");
document.addAuthor("TAG");
document.addCreator("TAG");
}
public void addTitlePage(Document document) throws DocumentException
{ // Font Style for Document
Font catFont = new Font(Font.FontFamily.TIMES_ROMAN, 18, Font.BOLD);
Font titleFont = new Font(Font.FontFamily.TIMES_ROMAN, 22, Font.BOLD
| Font.UNDERLINE, BaseColor.GRAY);
Font smallBold = new Font(Font.FontFamily.TIMES_ROMAN, 12, Font.BOLD);
Font normal = new Font(Font.FontFamily.TIMES_ROMAN, 12, Font.NORMAL); // Start New Paragraph
Paragraph prHead = new Paragraph(); // Set Font in this Paragraph
prHead.setFont(titleFont); // Add item into Paragraph
prHead.add("RESUME – Name\n"); // Create Table into Document with 1 Row
PdfPTable myTable = new PdfPTable(1); // 100.0f mean width of table is same as Document size
myTable.setWidthPercentage(100.0f); // Create New Cell into Table
PdfPCell myCell = new PdfPCell(new Paragraph(""));
myCell.setBorder(Rectangle.BOTTOM); // Add Cell into Table
myTable.addCell(myCell);
prHead.setFont(catFont);
prHead.add("\nName1 Name2\n");
prHead.setAlignment(Element.ALIGN_CENTER); // Add all above details into Document
document.add(prHead);
document.add(myTable);
document.add(myTable); // Now Start another New Paragraph
Paragraph prPersinalInfo = new Paragraph();
prPersinalInfo.setFont(smallBold);
prPersinalInfo.add("Address 1\n");
prPersinalInfo.add("Address 2\n");
prPersinalInfo.add("City: SanFran. State: CA\n");
prPersinalInfo.add("Country: USA Zip Code: 000001\n");
prPersinalInfo.add("Mobile: 9999999999 Fax: 1111111 Email: john_pit#gmail.com \n");
prPersinalInfo.setAlignment(Element.ALIGN_CENTER);
document.add(prPersinalInfo);
document.add(myTable);
document.add(myTable);
Paragraph prProfile = new Paragraph();
prProfile.setFont(smallBold);
prProfile.add("\n \n Profile : \n ");
prProfile.setFont(normal);
prProfile.add("\nI am Mr. XYZ. I am Android Application Developer at TAG.");
prProfile.setFont(smallBold);
document.add(prProfile); // Create new Page in PDF
document.newPage();
}
I'm using Kotlin here
Just adding the information in here, you can also create readable file outside Private Directory for the apps by doing this example
var teks="your teks"
var NamaFile="Text1.txt"
var strwrt:FileWriter
strwrt=FileWriter(File("sdcard/${NamaFile}"))
strwrt.write(teks)
strwrt.close()
after that, you can access File Manager and look up on the Internal Storage. Text1.txt will be on there below all the folders.