How to create text file and insert data to that file on Android

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(); } 

<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" /> 

isn't enough.

Add

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" /> <uses-permission android:name="android.permission.MANAGE_EXTERNAL_STORAGE" /> 

MANAGE_EXTERNAL_STORAGE documentation : Manage all files

To activate this permission, instead of using an intent:

• Go to your app settings
• Go to Authorizations
• There is "Storage" click on it
• Change the authorization from "Media only" to "all files".

Glad I could help.

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: [email protected] \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.