Taking a “screenshot” of a specific layout in Android

Question

I have two main issues which are closely linked. I am looking at these problems from a programmatic point of view.

(1) - I wish to take a screenshot of the

Answer 1

EDIT : after seeing OP's comment

You dont need to think about new activities at all.. Say you are in Activity right now.. Layout A is the main layout for the activity, Layout B and C are two child layouts inside Layout A. Like this,

 Layout A -> Parent
 |
  -------Layout B
 |
  -------Layout C

Now if you want to take screenshot of C only

1) in onCreate() of activity

 LinearLayout myCLayout = (LinearLayout)this.findViewbyId(R.id.my_c_layout);
 ViewTreeObserver vto   =  myCLayout.getViewTreeObserver();
 vto.addOnGlobalLayoutListener(new OnGlobalLayoutListener() {
   @Override
   public void onGlobalLayout() {
      //fully drawn, no need of listener anymore
      myCLayout.getViewTreeObserver().removeGlobalOnLayoutListener(this);
      getDrawingBitmap();
   }
 });

where getDrawingBitmap() is a function..to take your screenshot..

public void getDrawingBitmap(){
    LinearLayout myCLayout = (LinearLayout)this.findViewbyId(R.id.my_c_layout);
    Bitmap b = myCLayout.getDrawingCache();

    File file = saveBitmapAsFile(b);
}

EDIT: For ScrollView

I never tried it.. But I think you can do this..

1) first override scrollView, and override onMeasure function..

public class MyScrollView extends ScrollView{
    public MyScrollView(Context context, AttributeSet attrs) {
         super(context, attrs);
    }

    @Override
    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec){
        super.onMeasure(widthMeasureSpec, yourFullScrollViewHeight));
    }
}

and use MyScrollView in your layout.. here yourFullScrollViewHeight is the height of all scrollView content you need to take screenshot of.. I never tried this.. But it might work..

Answer 2

Thanks to you guys, I've finally found out what was wrong.

View v = view.getRootView(); should not be used because it will call the root view which I do not want. I mistakenly thought this did not make a difference because I had entered the wrong resource ID.

MeasureSpec somehow did not give a good account of the width and height. So I ended up using another method:

...
ScrollView z = (ScrollView) findViewById(R.id.scroll);
int totalHeight = z.getChildAt(0).getHeight();
int totalWidth = z.getChildAt(0).getWidth();
u.layout(0, 0, totalWidth, totalHeight);
...

As ScrollView's total height can be determined by the single child element that it has.

After making these changes, I am now able to take a screenshot of a nested ScrollView and all its contents, visible or not. For anyone interested, here is the block of code including the saving of the bitmap:

            View u = findViewById(R.id.scroll);
            u.setDrawingCacheEnabled(true);                                                
            ScrollView z = (ScrollView) findViewById(R.id.scroll);
            int totalHeight = z.getChildAt(0).getHeight();
            int totalWidth = z.getChildAt(0).getWidth();
            u.layout(0, 0, totalWidth, totalHeight);    
            u.buildDrawingCache(true);
            Bitmap b = Bitmap.createBitmap(u.getDrawingCache());             
            u.setDrawingCacheEnabled(false);

            //Save bitmap
            String extr = Environment.getExternalStorageDirectory().toString() +   File.separator + "Folder";
            String fileName = new SimpleDateFormat("yyyyMMddhhmm'_report.jpg'").format(new Date());
            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(getContentResolver(), b, "Screen", "screen");
            }catch (FileNotFoundException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            } catch (Exception e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }

Answer 3

I also had this problem and coded it myself.

I used this code to take screenshot of whole layout.

I did modified the list size and some mathematical items.

See the following website,

Answer 4

Here is the exact solution you want, It will display entire screen including content hidden in your ScrollView

LayoutInflater inflater = (LayoutInflater) this.getSystemService(LAYOUT_INFLATER_SERVICE);
FrameLayout root = (FrameLayout) inflater.inflate(R.layout.activity_main, null); // activity_main is UI(xml) file we used in our Activity class. FrameLayout is root view of my UI(xml) file.
root.setDrawingCacheEnabled(true);
Bitmap bitmap = getBitmapFromView(this.getWindow().findViewById(R.id.frameLayout)); // here give id of our root layout (here its my FrameLayout's id)

Display bitmap in your ImageView or use it as you want.
Enjoy..

Answer 5

Try this code

public Bitmap screenShot(View view) {

    Bitmap bitmap = Bitmap.createBitmap(view.getWidth(),
    view.getHeight(), Bitmap.Config.ARGB_8888);
    Canvas canvas = new Canvas(bitmap);
    view.draw(canvas);
    return bitmap;
}

Answer 6

try this it works fine for me

TableLayout tabLayout = (TableLayout) findViewById(R.id.allview);
if (tabLayout != null) {
    Bitmap image = Bitmap.createBitmap(tabLayout.getWidth(),
            tabLayout.getHeight(), Config.ARGB_8888);
    Canvas b = new Canvas(image);
    tabLayout.draw(b);
}