Set image as wallpaper from imageview irrespective of the image size, android?

Question

My problem is the image previewed on the imageview is not able to set fully as background wallpaper. Some part of it cuts. this is my onclick of button

    setasW.setOnClickListener(new View.OnClickListener() {
        @Override
        public void onClick(View v) {
              mImage.buildDrawingCache();
              Bitmap bmap = mImage.getDrawingCache();

              float scaleWidth = ((float) width) / bmap .getWidth();
            float scaleHeight = ((float) height) / bmap .getHeight();
            Matrix matrix = new Matrix();
            matrix.postScale(scaleWidth, scaleHeight);

              Bitmap scaledBitmap = Bitmap.createBitmap(bmap, 0, 0,bmap .getWidth(), bmap .getHeight(), matrix, true);;
              System.out.println("scaledBitmap-------"+scaledBitmap);
             WallpaperManager m=WallpaperManager.getInstance(getApplicationContext());
             try {
                m.setBitmap(scaledBitmap);
             } catch (IOException e) {
                e.printStackTrace();
             }
        }
     });

here mimage is the imageview Width and height are the screen size.

How to set the full image as wallpaper?

Aashish Bhatnagar · Answer 1 · 2013-06-03T11:46:43.863

0

You can use this directly I have made necessary changes

     setasW.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {

     DisplayMetrics outMetrics=new DisplayMetrics();
                            getWindowManager().getDefaultDisplay().getMetrics(outMetrics);
                            int w=outMetrics.widthPixels;
                            int h=outMetrics.heightPixels;


Rect rectgle= new Rect();
Window window= getWindow();
window.getDecorView().getWindowVisibleDisplayFrame(rectgle);
int StatusBarHeight= rectgle.top;
int contentViewTop= 
    window.findViewById(Window.ID_ANDROID_CONTENT).getTop();
int TitleBarHeight= contentViewTop - StatusBarHeight;



                      mImage.buildDrawingCache();
                      Bitmap bmap = mImage.getDrawingCache();

                      bmap =Bitmap.createScaledBitmap(bmap ,w,(h-TitleBarHeight), true);
                      System.out.println("scaledBitmap-------"+scaledBitmap);
                     WallpaperManager m=WallpaperManager.getInstance(getApplicationContext());
                     try {
                        m.setBitmap(scaledBitmap);
                     } catch (IOException e) {
                        e.printStackTrace();
                     }
                }
             });

edited Jun 03 '13 at 11:46

answered Jun 03 '13 at 11:08

Aashish Bhatnagar

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what value to pass in scaledBitmap? IS it the imageview bitmap? – Wishy Jun 03 '13 at 11:21
I am not sure what is the problem but still about 10% of the image gets cut down from above. The new scaled image is of the same size as of the device screen size. – Wishy Jun 03 '13 at 11:32
it's probably because of the title bar in the home screen occupies that space – Aashish Bhatnagar Jun 03 '13 at 11:33
http://stackoverflow.com/questions/3407256/height-of-status-bar-in-android get this height of the statusbar and subract it from the h and then create scaledbitmap – Aashish Bhatnagar Jun 03 '13 at 11:44
how to get the height of notification bar? – Wishy Jun 04 '13 at 04:24

Set image as wallpaper from imageview irrespective of the image size, android?

1 Answers1