Create Pdf in android studio, XML layout to pdf in android studio, open pdf in android studio.

    I'm using View binding here so I use binding class to bind the xml layout.

    GITHUB

    Lets see the XML code first...

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    >

<!--    we are going to pdf this linear layout -->
    <LinearLayout
        android:id="@+id/pdfLayout"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:orientation="vertical"
        android:padding="10dp"
        android:background="@color/white"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="User Name" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="User Name" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="Gender" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="Male" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="Age" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="25" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="Height" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="173 cm" />
        </LinearLayout>

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="horizontal">

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="Weight" />

            <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:text="70" />
        </LinearLayout>
    </LinearLayout>


<!--    lets create a button here to save pdf-->
    <Button
        android:id="@+id/pdfButton"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="pdf"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintStart_toStartOf="parent" />

    <Button
        android:id="@+id/openPDf"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="Open"
        app:layout_constraintBottom_toBottomOf="parent"
        app:layout_constraintEnd_toEndOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>

Let's show you the click action and binding properties code below.

// using view binding so i'm implemnt ing the layout like this.
// see my last mvvm video to implement the viewbinding.
private XmlPdfBinding xmlPdfBinding;

@Override
protected void onCreate(@Nullable Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    xmlPdfBinding = XmlPdfBinding.inflate(getLayoutInflater());
    setContentView(xmlPdfBinding.getRoot());
    /*To use the xml view in view binding need to define the id in xml */
    xmlPdfBinding.pdfButton.setOnClickListener(view -> {
       /*Lets start coding here how to convert the xml layout to pdf.
       * for the first we need to load the layout to Bitmap..
       * lets do that --> convert the pdfLayout to bitmap...
       * */
        Bitmap bitmap = viewToBitmap(xmlPdfBinding.pdfLayout,xmlPdfBinding.pdfLayout.getWidth(),xmlPdfBinding.pdfLayout.getHeight());
        createPdf(bitmap);
    });

    xmlPdfBinding.openPDf.setOnClickListener(view -> {
        OpenCreatedFile();
    });
}

Then we going to create a method to convert the view to bitmap .

/* This method is use to convert the view to bitmap
* In bitmap we need to provide HEIGHT, WIDTH, COLOR ALOGRITHM
* params @v = View, @Width = width of the pdf view @height = height of the pdf view
*  */
public static Bitmap viewToBitmap(View v,int width, int height){
    Bitmap viewMap = Bitmap.createBitmap(width,height,Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(viewMap);
    v.draw(canvas);
    /*process is done..  returing the bitmap*/
    return viewMap;
}

/*Lets start creating the pdf using this function
* @params  @bitmap= Bitmap
* */
public void createPdf(Bitmap bitmap){
    /*First get the height and width of the pdf
    * */
    DisplayMetrics displayMetrics = new DisplayMetrics();
    this.getWindowManager().getDefaultDisplay().getMetrics(displayMetrics);
    float heigh = displayMetrics.heightPixels;
    float width = displayMetrics.widthPixels;

    int mheight = (int) heigh, mwidth = (int) width;

    /* Started createing a pdf from here....
    * */
    PdfDocument document = new PdfDocument();
    /* You can specify the page count here and height and width of the page count
    * this is the layout height and width
    * if you need A4 size .. USE 594 and 842
    * */
    PdfDocument.PageInfo pageInfo = new PdfDocument.PageInfo.Builder(mheight,mwidth,1).create();
    PdfDocument.Page page = document.startPage(pageInfo);

    Canvas canvas = page.getCanvas();
    Paint paint = new Paint();
    canvas.drawPaint(paint);

    //        A4 size .. USE 594 and 842
    bitmap = Bitmap.createScaledBitmap(bitmap,mwidth,mheight,true);

    paint.setColor(Color.BLUE);

    canvas.drawBitmap(bitmap, 0,0,null);
    document.finishPage(page);

    try {

        /*Need to specify the pathb ...
        * Lets get that from the specific method ... */
        document.writeTo(getFileName());
    }catch (Exception e){
        Log.d("TAG", "createPdf: " + e.getMessage());
    }
}

/* To get the file path to store the pdf file
* */
public FileOutputStream getFileName(){
    File pdfDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS)+ "/PDF");
    if (!pdfDir.exists()) pdfDir.mkdir();
    File myPath = new File(pdfDir, "cmlPdf" + ".pdf");
    FileOutputStream fos = null;
    try {
        fos = new FileOutputStream(myPath);
    }catch (Exception ee){
        Log.d("TAG", "getFileName: " + ee.getMessage());
    }
    return fos;
}

public void OpenCreatedFile(){
    File pdfDir = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOCUMENTS)+ "/PDF");
    if (!pdfDir.exists()) pdfDir.mkdir();
    File myPath = new File(pdfDir, "cmlPdf" + ".pdf");
    if (myPath.exists()){
        Intent intent = new Intent();
        intent.setAction(Intent.ACTION_VIEW);
        intent.putExtra(Intent.EXTRA_TEXT, "OpenPDF");
        intent.setType("application.pdf");

        Intent shareIntent = Intent.createChooser(intent,null);
        startActivity(shareIntent);

    }
}


THANK YOU