To generate a PDF from this XML layout in Android using Java

To generate a PDF from this XML layout in Android using Java, you can follow these steps:

1. Add the necessary dependencies to your project. In your app-level build.gradle file, add the following dependencies:

Step 1 :

Go to app -> src -> main -> AndroidManifest.xml.

Step 2:

Copy following code:

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

Dependency types

To add a dependency to your project, specify a dependency configuration such as implementation in the dependencies block of your module's build.gradle file.

For example, the following build.gradle file for an app module includes three different types of dependencies:

plugins {
  id 'com.android.application'
}

android { ... }

dependencies {
  //To generate a PDF from this XML layout in Android using Java
implementation 'com.itextpdf:itextg:5.5.10'

}

2. Create a new Java class, let's call it PdfGenerator, and add the following code:

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import android.content.Context; import android.content.Intent; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.drawable.Drawable; import android.net.Uri; import android.os.Build; import android.os.Environment; import android.provider.Settings; import android.util.Log; import android.view.View; import android.widget.Toast; import com.itextpdf.text.Document; import com.itextpdf.text.DocumentException; import com.itextpdf.text.Image; import com.itextpdf.text.PageSize; import com.itextpdf.text.pdf.PdfWriter; import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileOutputStream; import java.io.IOException; public class PdfGenerator { private static final String TAG = "PdfGenerator"; Context context; public void generatePdf(Context context, View view, String fileName) { // Create a new document this.context=context; Document document = new Document(); File pdfDir = null; if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.R) { if (Environment.isExternalStorageManager()) { // The app has been granted the MANAGE_EXTERNAL_STORAGE permission // File file = new File(String.valueOf(Environment.getExternalStorageDirectory()), fileName); try { // after creating a file name we will // write our PDF file to that location. // Get the directory for storing the PDF file pdfDir = new File(Environment.getExternalStorageDirectory(), fileName); if (!pdfDir.exists()) { pdfDir.mkdirs(); } // Create the PDF file File file = new File(pdfDir, fileName); try { file.createNewFile(); } catch (IOException e) { e.printStackTrace(); } // Create a PDF writer instance try { PdfWriter.getInstance(document, new FileOutputStream(file)); } catch (DocumentException | IOException e) { e.printStackTrace(); } // Open the document document.open(); // Create an image from the view Bitmap bitmap = loadBitmapFromView(view); ByteArrayOutputStream stream = new ByteArrayOutputStream(); bitmap.compress(Bitmap.CompressFormat.PNG, 100, stream); // Add the image to the PDF document try { Image image = Image.getInstance(stream.toByteArray()); image.scaleToFit(PageSize.A4.getWidth(), PageSize.A4.getHeight()); document.add(image); } catch (DocumentException | IOException e) { e.printStackTrace(); } // below line is to print toast message // on completion of PDF generation. Toast.makeText(context, "PDF file generated successfully.", Toast.LENGTH_SHORT).show(); } catch (Exception e) { // below line is used // to handle error Toast.makeText(context, ""+e.toString(), Toast.LENGTH_SHORT).show(); } } else { // The app has not been granted the MANAGE_EXTERNAL_STORAGE permission // Request the permission from the user Intent intent = new Intent(Settings.ACTION_MANAGE_APP_ALL_FILES_ACCESS_PERMISSION); intent.setData(Uri.parse("package:" +context.getPackageName())); context.startActivity(intent); } } // // Get the directory for storing the PDF file // File pdfDir = new File(Environment.getExternalStorageDirectory(), "PDFs"); // if (!pdfDir.exists()) { // pdfDir.mkdirs(); // } // Close the document document.close(); // Log.d(TAG, "PDF file generated: " + file.getAbsolutePath()); } private static Bitmap loadBitmapFromView(View view) { Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888); Canvas canvas = new Canvas(bitmap); Drawable bgDrawable = view.getBackground(); if (bgDrawable != null) { bgDrawable.draw(canvas); } else { canvas.drawColor(android.graphics.Color.WHITE); } view.draw(canvas); return bitmap; } }

3. In your activity where you want to generate the PDF, add the following code:

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binding.btnGeneratePDF.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { // calling method to // generate our PDF file. // Generate the PDF binding.btnGeneratePDF.setVisibility(View.INVISIBLE); PdfGenerator pdfGenerator= new PdfGenerator(); pdfGenerator.generatePdf(TeacherSelectTimTableCHRActivity.this, binding.getRoot(), "ali.pdf"); binding.btnGeneratePDF.setVisibility(View.VISIBLE); } });