Develop Reference

Take whole "Screenshot" of a scrollable View

In my Fragment's layout i have a ScrollView with a LinearLayout inside
<ScrollView
android:id="#+id/scrollview"
android:layout_width="match_parent"
android:layout_height="wrap_content" >
<LinearLayout
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<!-- Other views -->
</LinearLayout>
</ScrollView>
So i need to create and share a picture of entire content of scrollview. All solutions i've tried take screenshot only of the visible area, and not of entire scrollview content. How can i do?

I hope this is work for you.. source here. this is not technically a screenshot code. but this code convert the whole layout view into bitmap
Bitmap bitmap = getBitmapFromView(scrollview, scrollview.getChildAt(0).getHeight(), scrollview.getChildAt(0).getWidth());
//create bitmap from the ScrollView
private Bitmap getBitmapFromView(View view, int height, int width) {
Bitmap bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
Drawable bgDrawable = view.getBackground();
if (bgDrawable != null)
bgDrawable.draw(canvas);
else
canvas.drawColor(Color.WHITE);
view.draw(canvas);
return bitmap;
}

call below method getYourLayout() where you want to take snap of your layout. In this i attach layout in one dialog & take snapshop of root layout whithout showing dialog to user. All thing happens in background.
private void getYourLayout() {
try {
Dialog fb_event_info = new Dialog(YourActivity.this);
fb_event_info.requestWindowFeature(Window.FEATURE_NO_TITLE);
fb_event_info.getWindow().setBackgroundDrawable(new ColorDrawable(Color.TRANSPARENT));
fb_event_info.setContentView(R.layout.yourXmlLayoutFile);
final LinearLayout lnr_fb_info = (LinearLayout) fb_event_info.findViewById(R.id.container);
TextView tv_fb_event_name = (TextView) fb_event_info.findViewById(R.id.tv_fb_event_name);
tv_fb_event_name.setTypeface(Global.setCubanoFont(EventDetailActivity.this));
tv_fb_event_name.setText(tv_event_name.getText().toString());
lnr_fb_info.setDrawingCacheEnabled(true);
lnr_fb_info.measure(View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED),
View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED));
lnr_fb_info.layout(0, 0, lnr_fb_info.getMeasuredWidth(), lnr_fb_info.getMeasuredHeight());
lnr_fb_info.buildDrawingCache(true);
bitmap = Bitmap.createBitmap(lnr_fb_info.getDrawingCache());
saveImage(bitmap);
} catch (Exception e) {
}
}
This Function is for Saving your Bitmap as file.
private void saveImage(Bitmap bitmap) {
try {
Log.e("----------in---", "saveImage....: ");
if (!rootFile.exists())
rootFile.mkdirs();
long time = System.currentTimeMillis();
fname = "mynight-" + time + ".png";
rootFile = new File(rootFile, fname);
Log.e("----------in---", "saveImage...1.: ");
try {
FileOutputStream Fout = new FileOutputStream(rootFile);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, Fout);
sendShareFb();
Fout.flush();
Fout.close();
} catch (Exception e) {
e.printStackTrace();
}
} catch (Exception e) {
e.printStackTrace();
}
}
Below function is for share your image on facebook.
private void sendShareFb() {
try {
Log.e("----------in---", "sendShareFb....: ");
Intent fbIntent = new Intent(Intent.ACTION_SEND);
File imageFile = new File(rootFile.toString());
fbIntent.putExtra(Intent.EXTRA_TEXT, "Share..");
fbIntent.putExtra(Intent.EXTRA_STREAM, Uri.fromFile(imageFile));
fbIntent.setType("image/jpeg/png");
PackageManager pm = getPackageManager();
List<ResolveInfo> lract = pm.queryIntentActivities(fbIntent, PackageManager.MATCH_DEFAULT_ONLY);
boolean resolved = false;
for (ResolveInfo ri : lract) {
if (ri.activityInfo.name.toLowerCase().contains("facebook")) {
fbIntent.setClassName(ri.activityInfo.packageName, ri.activityInfo.name);
resolved = true;
break;
}
}
if (!resolved) {
Toast.makeText(EventDetailActivity.this, "Vous ne semblez pas avoir Facebook installé sur cet appareil", Toast.LENGTH_SHORT).show();
}
startActivity(resolved ? fbIntent : Intent.createChooser(fbIntent, "Choose one"));
} catch (final ActivityNotFoundException e) {
e.printStackTrace();
}
}
Sure that this will Help you. Because this solution has fixed my problem many time.

Android API PdfDocument not writing data in file using writeTo(outputStream)

Button for creating pdf file
//button listener for creating pdf file
convert2PDF.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
//pdf document created
PdfDocument document = new PdfDocument();
//pageinfo created
PdfDocument.PageInfo pageInfo = new PdfDocument.PageInfo.Builder(800, 800, 1).create();
//page created based on pageinfo
PdfDocument.Page page = document.startPage(pageInfo);
//ImageView used to draw bitmap on page's canvas
ImageView imageView = new ImageView(context);
//setting imageView height weight equal to page height weight
imageView.setMaxHeight(800);
imageView.setMaxWidth(800);
//setting the imageView to bitmap selected from list
imageView.setImageBitmap(BitmapFactory.decodeFile(selectedFileList.get(0).getPath()));
//imageView drawn on canvas
imageView.draw(page.getCanvas());
//page finished
document.finishPage(page);
File result = null;
try {
result = File.createTempFile("afew", ".pdf",
context.getCacheDir());
//writing the pdf doc to temp file
document.writeTo(new BufferedOutputStream(new
FileOutputStream(result)));
} catch (FileNotFoundException e) {
Toast.makeText(getApplicationContext(), e.getMessage(),
Toast.LENGTH_SHORT).show();
} catch (IOException e) {
Toast.makeText(getApplicationContext(),
e.getMessage(),Toast.LENGTH_SHORT).show();
}
document.close();
//main file
File a = new File("/storage/sdcard/b.pdf");
//funct transfer used for transferring bytes from one file to another
transfer(result, a);
//set content of layout with imageView
context.setContentView(imageView);
}});
**I tried running above code but the file created at /storage/sdcard/b.pdf is empty always **
i searched through many answers here but none of them worked
is there anyway i can resolve this issue plz help

wow 3 days & found answer
protected File doInBackground(ArrayList<File>... params) {
File output = null;
PdfDocument doc = new PdfDocument();
ArrayList<Bitmap> images = new ArrayList<Bitmap>();
PdfDocument.Page page = null;
ArrayList<Bitmap> bitmaps = null;
Canvas canvas = null;
File outputDir = new File(getFilesDir()+"/Output/PDF");
if(!outputDir.exists()){
outputDir.mkdirs();
}
Random rand = new Random();
output = new File(getFilesDir()+"/Output/PDF/data-"+rand.nextInt()+".pdf");
for(File a: params[0]){
BitmapFactory.Options options = new BitmapFactory.Options();
options.inJustDecodeBounds = true;
BitmapFactory.decodeFile(a.getPath(), options);
int imageHeight = options.outHeight;
int imageWidth = options.outWidth;
String imageType = options.outMimeType;
Bitmap b = decodeSampledBitmapFromResource(a, imageWidth/2, imageHeight/2);
if(b!=null){
images.add(b);
}
}
int i = 0;
for(Bitmap a: images){
PdfDocument.PageInfo pageInfo = new PdfDocument.PageInfo.Builder(a.getWidth(), a.getHeight(), i++).create();
page = doc.startPage(pageInfo);
page.getCanvas().drawBitmap(a, 0, 0, new Paint(Paint.ANTI_ALIAS_FLAG));
doc.finishPage(page);
}
try{
FileOutputStream out = new FileOutputStream(output);
doc.writeTo(out);
out.flush();
out.close();
}catch(FileNotFoundException e){}
catch(IOException e){}
doc.close();
return output;
}

Screen capture TextureView is black using DrawingCache

I have a custom tiling view, which was until recently based on a SurfaceView. I have now changed it to extend TextureView.
Basically I am getting a large image in tile bits.
I need to capture all the content of the screen and save it as a bitmap, which has worked with all views including the SurfaceView. However, when i use the same method now, the area of the TextureView is black. I have read that this has something to do with HW acceleration.
Is there any way of capturing the image of the texture view?
Below is the screen capture method.
public File takeScreenShot(View contentView)
{
File result = null;
String mPath = this.cacheDir + "/screenshot.png";
File imageFile = new File(mPath);
if (imageFile.exists()) {
imageFile.delete();
Log.i("ImageManager","Old screenshot image was deleted");
}
// create bitmap screen capture
Bitmap bitmap;
View v1 = contentView;
v1.setDrawingCacheEnabled(true);
v1.setDrawingCacheBackgroundColor(Color.WHITE);
bitmap = Bitmap.createBitmap(v1.getDrawingCache());
v1.setDrawingCacheEnabled(false);
OutputStream outputStream = null;
try {
outputStream = new FileOutputStream(imageFile);
bitmap.compress(Bitmap.CompressFormat.PNG, 90, outputStream);
outputStream.flush();
outputStream.close();
result = imageFile;
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return result;
}
EDIT: New attempt
Get all TextureViews and call getBitmap. This works, however placing them on top of the larger bitmap does not look right with the coordinates from the TilingView it self or the getLocation OnScreen() or getLocationInWindow().
public List<TilingTextureView> getAllTextureViews(View view)
{
List<TilingTextureView> tilingViews = new ArrayList<TilingTextureView>();
if (view instanceof TilingTextureView) {
tilingViews.add((TilingTextureView)view);
}
else if(view instanceof ViewGroup)
{
ViewGroup viewGroup = (ViewGroup)view;
for (int i = 0; i < viewGroup.getChildCount(); i++) {
tilingViews.addAll(getAllTextureViews(viewGroup.getChildAt(i)));
}
}
return tilingViews;
}
This bit is added in the takeScreenShot method after getting the screen shot of the entire view.
List<TilingTextureView> tilingViews = getAllTextureViews(contentView);
if (tilingViews.size() > 0) {
Canvas canvas = new Canvas(bitmap);
for (TilingTextureView tilingTextureView : tilingViews) {
Bitmap b = tilingTextureView.getBitmap(tilingTextureView.getWidth(), tilingTextureView.getHeight());
int[] location = new int[2];
tilingTextureView.getLocationInWindow(location);
int[] location2 = new int[2];
tilingTextureView.getLocationOnScreen(location2);
canvas.drawBitmap(b, location[0], location[1], null);
}
}

Some thing to notice:
Bitmap textureViewBitmap = textureView.getBitmap();
View v1 = getWindow().getDecorView().getRootView();
v1.setDrawingCacheEnabled(true);
v1.setDrawingCacheBackgroundColor(Color.TRANSPARENT);
Bitmap viewBitmap = Bitmap.createBitmap(v1.getDrawingCache());
viewBitmap.setHasAlpha(true);
v1.setDrawingCacheEnabled(false);
Canvas canvas = new Canvas(textureViewBitmap);
canvas.drawBitmap(viewBitmap, 0, 0, paint);
FileOutputStream outputStream = new FileOutputStream(imageFileDest);
int quality = 100;
cameraBitmap.compress(Bitmap.CompressFormat.JPEG, quality, outputStream);
outputStream.flush();
outputStream.close();
Assume the textureView is fullscreen and only one. If you would like the overlay view covered the TextureView, viewBitmap.setHasAlpha(true); is important, otherwise the combined bitmap is still black on the "textureView part".

how to create pdf file with multiple pages from image file in android

How to create PDF file with multiple pages from image file in Android? I created one PDF file from image. That PDF file has one page. That is half of that image. In the right side search part is cut in PDF file.
I am using itext-5.3.4.jar for create PDF.
wbviewnews.loadUrl("http://developer.android.com/about/index.html");
// button for create wbpage to image than image to PDF file
Button btnclick =(Button)findViewById(R.id.btnclick);
btnclick.setOnClickListener(new OnClickListener() {
#Override
public void onClick(View v) {
// TODO Auto-generated method stub
Picture p = wbviewnews.capturePicture();
bitmap=null;
PictureDrawable pictureDrawable = new PictureDrawable(p);
bitmap = Bitmap.createBitmap(pictureDrawable.getIntrinsicWidth(),pictureDrawable.getIntrinsicHeight(), Config.ARGB_8888);
//Bitmap bitmap = Bitmap.createBitmap(200,200, Config.ARGB_8888);
Canvas canvas = new Canvas(bitmap);
canvas.drawPicture(pictureDrawable.getPicture());
ImageView imgdata=(ImageView)findViewById(R.id.imgdata);
imgdata.setImageBitmap(bitmap);
String filename = "pippo.png";
File sd = Environment.getExternalStorageDirectory();
File dest = new File(sd, filename);
String pdffilename = "pippo.pdf";
File pdffilepath = new File(sd, pdffilename);
try {
FileOutputStream out = new FileOutputStream(dest);
bitmap.compress(Bitmap.CompressFormat.PNG, 100, out);
out.flush();
out.close();
} catch (Exception e) {
e.printStackTrace();
Log.e("Exception", e.toString());
}
Document document=new Document();
try {
Log.e("pdffilepath", pdffilepath.toString());
PdfWriter writer = PdfWriter.getInstance(document,new FileOutputStream(pdffilepath));
document.open();
// URL url = new URL (Environment.getExternalStorageDirectory().getAbsolutePath()+"/"+filename);
// Log.e("url", url.toString());
Image image = Image.getInstance(Environment.getExternalStorageDirectory().getAbsolutePath()+"/"+filename) ;
document.add(image);
document.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Log.e("FileNotFoundException", e.toString());
} catch (DocumentException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Log.e("DocumentException", e.toString());
} catch (MalformedURLException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Log.e("MalformedURLException", e.toString());
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
Log.e("IOException", e.toString());
}
}
});

Your search through StackOverflow is less I guess cause I found these answer already there having solution, yes its contained in different answer and looking at the Q/A I guess they can solve your problem, if not then keep trying :)
how to Generate Pdf File with Image in android?
How to create a PDF with multiple pages from a Graphics object with Java and itext
iText Example

if your linear layout height is very large than try this code
https://demonuts.com/android-generate-pdf-view/
follow this link and just change the lines
PdfDocument document = new PdfDocument();
PdfDocument.PageInfo pageInfo = new PdfDocument.PageInfo.Builder(convertWidth, 10000, 1).create();
PdfDocument.Page page = document.startPage(pageInfo);
Canvas canvas = page.getCanvas();
Paint paint = new Paint();
paint.setColor(Color.BLUE);
canvas.drawPaint(paint);
Bitmap bitmap = Bitmap.createScaledBitmap(bitmap, convertWidth, 10000, true);
canvas.drawBitmap(bitmap, 0, 0 , null);
document.finishPage(page);`

If you want to create a pdf file with multiple images you can use PdfDocument from Android. Here is a demo:
private void createPDFWithMultipleImage(){
File file = getOutputFile();
if (file != null){
try {
FileOutputStream fileOutputStream = new FileOutputStream(file);
PdfDocument pdfDocument = new PdfDocument();
for (int i = 0; i < images.size(); i++){
Bitmap bitmap = BitmapFactory.decodeFile(images.get(i).getPath());
PdfDocument.PageInfo pageInfo = new PdfDocument.PageInfo.Builder(bitmap.getWidth(), bitmap.getHeight(), (i + 1)).create();
PdfDocument.Page page = pdfDocument.startPage(pageInfo);
Canvas canvas = page.getCanvas();
Paint paint = new Paint();
paint.setColor(Color.BLUE);
canvas.drawPaint(paint);
canvas.drawBitmap(bitmap, 0f, 0f, null);
pdfDocument.finishPage(page);
bitmap.recycle();
}
pdfDocument.writeTo(fileOutputStream);
pdfDocument.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
private File getOutputFile(){
File root = new File(this.getExternalFilesDir(null),"My PDF Folder");
boolean isFolderCreated = true;
if (!root.exists()){
isFolderCreated = root.mkdir();
}
if (isFolderCreated) {
String timeStamp = new SimpleDateFormat("yyyyMMdd_HHmmss", Locale.US).format(new Date());
String imageFileName = "PDF_" + timeStamp;
return new File(root, imageFileName + ".pdf");
}
else {
Toast.makeText(this, "Folder is not created", Toast.LENGTH_SHORT).show();
return null;
}
}
Here images is the ArrayList of the images with path.

you can set the image like this way...
Bitmap bt=Bitmap.createScaledBitmap(btm, 200, 200, false);
bt.compress(Bitmap.CompressFormat.PNG,100, bos);

How to convert all content in a scrollview to a bitmap?

I use below code to convert, but it seems can only get the content in the display screen and can not get the content not in the display screen.
Is there a way to get all the content even out of scroll?
Bitmap viewBitmap = Bitmap.createBitmap(mScrollView.getWidth(),mScrollView.getHeight(),Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(viewBitmap);
mScrollView.draw(canvas);

We can convert all the contents of a scrollView to a bitmap image using the code shown below
private void takeScreenShot()
{
View u = ((Activity) mContext).findViewById(R.id.scroll);
HorizontalScrollView z = (HorizontalScrollView) ((Activity) mContext).findViewById(R.id.scroll);
int totalHeight = z.getChildAt(0).getHeight();
int totalWidth = z.getChildAt(0).getWidth();
Bitmap b = getBitmapFromView(u,totalHeight,totalWidth);
//Save bitmap
String extr = Environment.getExternalStorageDirectory()+"/Folder/";
String fileName = "report.jpg";
File myPath = new File(extr, fileName);
FileOutputStream fos = null;
try {
fos = new FileOutputStream(myPath);
b.compress(Bitmap.CompressFormat.JPEG, 100, fos);
fos.flush();
fos.close();
MediaStore.Images.Media.insertImage(mContext.getContentResolver(), b, "Screen", "screen");
}catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (Exception e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
public Bitmap getBitmapFromView(View view, int totalHeight, int totalWidth) {
Bitmap returnedBitmap = Bitmap.createBitmap(totalWidth,totalHeight , Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(returnedBitmap);
Drawable bgDrawable = view.getBackground();
if (bgDrawable != null)
bgDrawable.draw(canvas);
else
canvas.drawColor(Color.WHITE);
view.draw(canvas);
return returnedBitmap;
}

The Pops answer is really good, but in some case you could have to create a really big bitmap which could trigger a OutOfMemoryException when you create the bitmap.
So I made a little optimization to be gently with the memory :)
public static Bitmap getBitmapFromView(View view, int totalHeight, int totalWidth) {
int height = Math.min(MAX_HEIGHT, totalHeight);
float percent = height / (float)totalHeight;
Bitmap canvasBitmap = Bitmap.createBitmap((int)(totalWidth*percent),(int)(totalHeight*percent), Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(canvasBitmap);
Drawable bgDrawable = view.getBackground();
if (bgDrawable != null)
bgDrawable.draw(canvas);
else
canvas.drawColor(Color.WHITE);
canvas.save();
canvas.scale(percent, percent);
view.draw(canvas);
canvas.restore();
return canvasBitmap;
}

This one works for me
To save the bitmap check runtime permission first
#OnClick(R.id.donload_arrow)
public void DownloadBitMap()
{
if (ContextCompat.checkSelfPermission(this, Manifest.permission.WRITE_EXTERNAL_STORAGE) == PackageManager.PERMISSION_GRANTED)
{
downloadData();
Log.e("callPhone: ", "permission" );
} else {
ActivityCompat.requestPermissions(this, new String[]{Manifest.permission.WRITE_EXTERNAL_STORAGE}, 0);
Toast.makeText(this, "need permission", Toast.LENGTH_SHORT).show();
}
}
To get bitmap
private void downloadData() {
ScrollView iv = (ScrollView) findViewById(R.id.scrollView);
Bitmap bitmap = Bitmap.createBitmap(
iv.getChildAt(0).getWidth()*2,
iv.getChildAt(0).getHeight()*2,
Bitmap.Config.ARGB_8888);
Canvas c = new Canvas(bitmap);
c.scale(2.0f, 2.0f);
c.drawColor(getResources().getColor(R.color.colorPrimary));
iv.getChildAt(0).draw(c);
// Do whatever you want with your bitmap
saveBitmap(bitmap);
}
To save the bitmap
public void saveBitmap(Bitmap bitmap) {
File folder = new File(Environment.getExternalStorageDirectory() +
File.separator + "SidduInvoices");
boolean success = true;
if (!folder.exists()) {
success = folder.mkdirs();
}
if (success) {
// Do something on success
} else {
// Do something else on failure
}
File imagePath = new File(Environment.getExternalStorageDirectory() + "/SidduInvoices/Siddus.png");
if(imagePath.exists())
{
imagePath=new File(Environment.getExternalStorageDirectory() + "/SidduInvoices/Siddus"+custamername.getText().toString()+".png");
}
FileOutputStream fos;
try {
fos = new FileOutputStream(imagePath);
bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
fos.flush();
fos.close();
progressBar.cancel();
final File finalImagePath = imagePath;
new SweetAlertDialog(this, SweetAlertDialog.SUCCESS_TYPE)
.setTitleText("Saved")
.setContentText("Do you want to share this with whatsapp")
.setCancelText("No,cancel !")
.setConfirmText("Yes,share it!")
.showCancelButton(true)
.setConfirmClickListener(new SweetAlertDialog.OnSweetClickListener() {
#Override
public void onClick(SweetAlertDialog sweetAlertDialog) {
sweetAlertDialog.cancel();
shareImage(finalImagePath);
}
})
.setCancelClickListener(new SweetAlertDialog.OnSweetClickListener() {
#Override
public void onClick(SweetAlertDialog sDialog) {
sDialog.cancel();
}
})
.show();
} catch (FileNotFoundException e) {
Log.e("GREC", e.getMessage(), e);
} catch (IOException e) {
Log.e("GREC", e.getMessage(), e);
}
}

You need get the total width and height of the scrollview, or you created viewBitmap is too small to contain the full content of the scrollview.
check this link
Android: Total height of ScrollView

The issue here is that the only actual pixel content that ever exists is that which is visible on the display screen. Android and other mobile platforms are very careful about memory use and one of the ways a scrolling view can maintain performance is to not draw anything that is offscreen. So there is no "full" bitmap anywhere -- the memory containing the content that moves offscreen is recycled.