怎么样。在java中增加这个图像的大小

Question

这是qr生成器方法。我试图在android中生成一个二维码，下面的代码生成一个非常小的图像。如果我尝试将其大小从500增加到700它终止。如何在java中增加该图像的大小。

全局变量

 Bitmap bitmap ;
        public final static int QRcodeWidth = 500 ;

private void UploadFile（final String orderId）{

    try{
        bitmap = TextToImageEncode(orderId);

        FirebaseStorage storage = FirebaseStorage.getInstance();

        final StorageReference mStorage = storage.getReferenceFromUrl("gs://samyatadb.appspot.com/qrcode");

        ByteArrayOutputStream baos = new ByteArrayOutputStream();
        bitmap.compress(Bitmap.CompressFormat.JPEG, 100, baos);

        //==============storing image to storage=====================//
        byte[] data = baos.toByteArray();

        UploadTask uploadTask = mStorage.child(user_id).child(String.valueOf(orderId)).putBytes(data);

        uploadTask.addOnFailureListener(new OnFailureListener() {
            @Override
            public void onFailure(@NonNull Exception e) {

            }
        }).addOnSuccessListener(new OnSuccessListener<UploadTask.TaskSnapshot>() {
            @Override
            public void onSuccess(UploadTask.TaskSnapshot taskSnapshot) {

                downloadURL = taskSnapshot.getDownloadUrl();

                Log.e("auth", "onSuccess: "+downloadURL);

                String imgpath = downloadURL.toString();
                Map<String, Object> data = new HashMap<>();
                DocumentReference newqr = db.collection("Orders").document(orderId);
                data.put("ImageQR",imgpath);
                newqr.set(data, SetOptions.merge());

                Map<String, Object> data1 = new HashMap<>();
                DocumentReference newqr1 = db.collection("Orderers").document(user_id).collection("OpenOrders").document(orderId);
                data1.put("ImageQR",imgpath);
                newqr1.set(data1, SetOptions.merge());

                pd.dismiss();
                Toast.makeText(Qrcode.this,"Your Order was Completed...",Toast.LENGTH_LONG).show();
                taskSnapshot.getMetadata();
            }
        });
        imageView.setImageBitmap(bitmap);

    }

    catch (WriterException e){

        e.printStackTrace();

    }

}

xml代码

 <ImageView
            android:id="@+id/imageView"
            android:layout_width="140dp"
            android:layout_height="140dp"
            android:layout_gravity="center_horizontal"
            android:layout_marginTop="15dp"
            android:background="@drawable/placeholder"
            android:scaleType="centerCrop"
            android:visibility="visible"
            tools:ignore="ContentDescription" />