Question

I am getting error while taking screenshot and create bitmap with cropping picture

below is my code

    View v1 = mKittyBGLayer.getRootView();
    v1.setDrawingCacheEnabled(true);
    Bitmap source = v1.getDrawingCache();
    int width = source.getWidth();
    int height = source.getHeight();
    System.out.println("vListView : -"+vListView.getWidth());
    System.out.println("hListView : -"+hListView.getHeight());
    System.out.println("Width : -"+width);
    System.out.println("Height : -"+height);
    bitmap = Bitmap.createBitmap(source, vListView.getWidth(), 0, width, height - hListView.getHeight());

my logcat is

        11-01 11:00:31.419: I/System.out(1658): vListView :- 60
        11-01 11:00:31.429: I/System.out(1658): hListView :- 60
        11-01 11:00:31.429: I/System.out(1658): Width :- 480
        11-01 11:00:31.429: I/System.out(1658): Height :- 320
        11-01 11:00:31.429: D/AndroidRuntime(1658): Shutting down VM
        11-01 11:00:31.429: W/dalvikvm(1658): threadid=1: thread exiting with uncaught exception  (group=0x40018560)
        11-01 11:00:31.429: E/AndroidRuntime(1658): FATAL EXCEPTION: main
        11-01 11:00:31.429: E/AndroidRuntime(1658): java.lang.IllegalArgumentException: x + width  must be <= bitmap.width()
        11-01 11:00:31.429: E/AndroidRuntime(1658):     at android.graphics.Bitmap.createBitmap(Bitmap.java:410)
        11-01 11:00:31.429: E/AndroidRuntime(1658):     at android.graphics.Bitmap.createBitmap(Bitmap.java:383)
        11-01 11:00:31.429: E/AndroidRuntime(1658):     at com.appsehs.android.CUTECRAZYKITTENDRESSUPGAME.PhotoSortrActivity.takeScreenShot(PhotoSortrActivity.java:247)
        11-01 11:00:31.429: E/AndroidRuntime(1658):     at com.appsehs.android.CUTECRAZYKITTENDRESSUPGAME.PhotoSortrActivity.onOptionsItemSelected(PhotoSortrActivity.java:274)
        11-01 11:00:31.429: E/AndroidRuntime(1658):     at android.app.Activity.onMenuItemSelected(Activity.java:2205)

Here you can see that x < bitmap.getWidth mean 60 < 480

although i am getting error

Answer 1

No, not x must be < bitmap.width(). It says x + width must be <= bitmap.width().

You are creating a Bitmap like so:

Bitmap.createBitmap(source, 60, 0, 480, 260); // 320 - 60 = 260

Basically, you are drawing from x = 60, y = 0 to x = 480 + 60, y = 260 on a Bitmap which is only 480×320. Obviously, this is not possible, since your x coordinate is off the Bitmap.

It’s hard to tell you how to fix this without knowing your exact use case. Basically, your source image has to fit within { x1: x, x2: x + width, y1: y, y2: y + height }.

If you only want to draw from the 60th pixel onward, then you need to do this:

Bitmap.createBitmap(source, vListView.getWidth(), 0, width - vListView.getWidth(), height - hListView.getHeight());