view.getDrawingCache() is deprecated in Android API 28

Question

In android API 28 view.getDrawingCache() has been deprecated. Is there any newer solution to generate a Bitmap of a particular view in android.

score 74 · Answer 1 · edited Jul 23 '22 at 06:32

Two ways to get bitmap of view

Using Canvas
Using Pixel Api

`Canvas Java`

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

Bitmap getBitmapFromView(View view,int defaultColor) {
    Bitmap bitmap = Bitmap.createBitmap(
        view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888
    );
    Canvas canvas = new Canvas(bitmap);
    canvas.drawColor(defaultColor);
    view.draw(canvas);
    return bitmap;
}

`Canvas Kotlin`

fun getBitmapFromView(view: View): Bitmap {
    val bitmap = Bitmap.createBitmap(
        view.width, view.height, Bitmap.Config.ARGB_8888
    )
    val canvas = Canvas(bitmap)
    view.draw(canvas)
    return bitmap
}

fun getBitmapFromView(view: View, defaultColor: Int): Bitmap {
    val bitmap = Bitmap.createBitmap(
        view.width, view.height, Bitmap.Config.ARGB_8888
    )
    val canvas = Canvas(bitmap)
    canvas.drawColor(defaultColor)
    view.draw(canvas)
    return bitmap
}

`Example`

//@param rootView is View object which you want to get bitmap
Bitmap bitmap = getBitmapFromView(rootView);
Bitmap bitmapColored = getBitmapFromView(rootView,Color.WHITE);

`PixelCopy Api`

https://stackoverflow.com/a/52985554/9909365

fun getBitmapFromView(view: View, activity: Activity, callback: (Bitmap) -> Unit) {
    activity.window?.let { window ->
        val bitmap = Bitmap.createBitmap(view.width, view.height, Bitmap.Config.ARGB_8888)
        val locationOfViewInWindow = IntArray(2)
        view.getLocationInWindow(locationOfViewInWindow)
        try {
            PixelCopy.request(window, Rect(locationOfViewInWindow[0], locationOfViewInWindow[1], locationOfViewInWindow[0] + view.width, locationOfViewInWindow[1] + view.height), bitmap, { copyResult ->
                if (copyResult == PixelCopy.SUCCESS) {
                    callback(bitmap)
                }
                // possible to handle other result codes ...
            }, Handler())
        } catch (e: IllegalArgumentException) {
            // PixelCopy may throw IllegalArgumentException, make sure to handle it
            e.printStackTrace()
        }
    }
}

For More See About

Bitmaps

Canvas

how can I get portion of view. createBitmap seems to take only width and height, looking for x,y,width,height — Alex, Feb 22 '19 at 16:40
@Alex user this `Bitmap.createBitmap(Bitmap source, int x, int y, int width, int height)` — Ashvin solanki, Feb 23 '19 at 04:54
and how do you get source now. Bcz view.getDrawingCache() is deprecated which was returning bitmap. — Alex, Feb 23 '19 at 20:51
@Alex first use this method to get bitmap of view the modify as u need — Ashvin solanki, Feb 24 '19 at 12:47
kotlin has a View.drawToBitmap extension function, which takes scrollX/Y into consideration — Xixiaxixi, Aug 20 '23 at 02:41

Mostafa Monowar · Accepted Answer · 2018-10-25T09:16:16.023

14

I have found a way to use PixelCopy API for retrieving the view as a Bitmap. Used Kotlin

fun getBitmapFromView(view: View, activity: Activity, callback: (Bitmap) -> Unit) {
    activity.window?.let { window ->
        val bitmap = Bitmap.createBitmap(view.width, view.height, Bitmap.Config.ARGB_8888)
        val locationOfViewInWindow = IntArray(2)
        view.getLocationInWindow(locationOfViewInWindow)
        try {
            PixelCopy.request(window, Rect(locationOfViewInWindow[0], locationOfViewInWindow[1], locationOfViewInWindow[0] + view.width, locationOfViewInWindow[1] + view.height), bitmap, { copyResult ->
                if (copyResult == PixelCopy.SUCCESS) {
                    callback(bitmap)
                }
                // possible to handle other result codes ...
            }, Handler())
        } catch (e: IllegalArgumentException) {
            // PixelCopy may throw IllegalArgumentException, make sure to handle it
            e.printStackTrace()
        }
    }
}

edited Oct 25 '18 at 09:16

answered Oct 25 '18 at 09:10

Mostafa Monowar

881
1
8
14

[ref](https://developer.android.com/reference/android/view/PixelCopy#request(android.view.Window,%20android.graphics.Rect,%20android.graphics.Bitmap,%20android.view.PixelCopy.OnPixelCopyFinishedListener,%20android.os.Handler)) – olfek Feb 03 '19 at 16:00
23

Why does Google always have to complicate things? I want the bitmap the same time I'm calling the method not later on in the future using callbacks. – TheRealChx101 Feb 10 '19 at 13:03
2

@TheRealChx101 I found [this](https://stackoverflow.com/a/19383606/812919) today which I'm going to use instead. – olfek Feb 15 '19 at 23:30
1

`PixelCopy` requires API Level 26 and above. If you want compatability, for older API level, use the solution posted by @daka. – Morgan Koh Mar 12 '19 at 08:02
1

@daka you can use [link](https://github.com/Muddz/PixelShot) this library. It handles all stuffs for saving an image of a view. – Mostafa Monowar Mar 12 '19 at 10:56
A better and optimised solution would be "view.drawToBitmap()" – Othmane_lam Feb 05 '23 at 17:19

score 3 · Answer 3 · answered Jun 20 '19 at 11:06

3

Try this:

    private fun convertViewToDrawable(view: View): Bitmap {
    val spec = View.MeasureSpec.makeMeasureSpec(0, View.MeasureSpec.UNSPECIFIED)
    view.measure(spec, spec)
    view.layout(0, 0, view.measuredWidth, view.measuredHeight)
    val b = Bitmap.createBitmap(view.measuredWidth, view.measuredHeight,
            Bitmap.Config.ARGB_8888)
    val c = Canvas(b)
    c.translate((-view.scrollX).toFloat(), (-view.scrollY).toFloat())
    view.draw(c)
    return b
}

answered Jun 20 '19 at 11:06

Shyam Kumar

909
11
12

What's the need of translate, and of scrolling values? – android developer Jul 30 '20 at 19:06
Without it, if the view is scrolled, the part of the view that gets written to the bitmap will not match the part of the view that is actually visible. – Brian Rak Jul 18 '21 at 16:54

score 2 · Answer 4 · edited Jan 02 '19 at 06:46

2

As of the official documentation getDrawingCache() you should use the PixelCopy api.

edited Jan 02 '19 at 06:46

scienticious

438
1
7
22

answered Oct 04 '18 at 08:16

Antonio Vlasic

337
3
15

Do I need to use SurfaceView to use PixelCopy(). Cause in android documentation it sayes "pixel copy requests to allow for copy operations from Surface to Bitmap". – Mostafa Monowar Oct 04 '18 at 10:02
add an example of pixelCopy() to capture bitmap of view – Ashvin solanki Oct 20 '18 at 12:28
1

@Ashvinsolanki please checkout my answer. It works on. – Mostafa Monowar Oct 25 '18 at 09:11
how to use: https://medium.com/@hiteshkrsahu/a-complete-guide-for-taking-screenshot-in-android-28-bcb9a19a2b6e – Nick Kovalsky Sep 10 '20 at 06:58
The use of PixelCopy is not necessarily "should". The [docs](https://developer.android.com/reference/android/view/View.html#getDrawingCache()) only recommends using it for UI feedback report and unit tests. – mr5 Oct 10 '20 at 13:20

score 1 · Answer 5 · answered Sep 24 '19 at 17:25

1

much precise code..

private fun convertViewToDrawable(view: View): Bitmap {
        val b = Bitmap.createBitmap(view.measuredWidth, view.measuredHeight,
            Bitmap.Config.ARGB_8888)
        val c = Canvas(b)
        c.translate((-view.scrollX).toFloat(), (-view.scrollY).toFloat())
        view.draw(c)
        return b
    }

answered Sep 24 '19 at 17:25

Asad

1,241
3
19
32

2

Why the need of translate, and of scrolling values? – android developer Jul 30 '20 at 19:06

score 0 · Answer 6 · answered Jun 18 '20 at 08:32

Some other kotlin code (ScrollView case)

val ScrollView.bitmap: Bitmap
get() {
    val bitmap = Bitmap.createBitmap(width, getChildAt(0).height, Bitmap.Config.RGB_565)
    with(Canvas(bitmap)) {
        val background = background
        if (background != null) {
            background.draw(this)
        } else {
            drawColor(Color.WHITE)
        }
        draw(this)
    }
    return bitmap
}

score 0 · Answer 7 · edited May 25 '22 at 05:16

0

bitmap = view.drawToBitmap()
val pixel = bitmap.getpixel(x,y)

edited May 25 '22 at 05:16

Suraj Rao

29,388
11
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103

answered May 25 '22 at 05:12

Amit sharma

1

While this code may solve the question, [including an explanation](//meta.stackexchange.com/q/114762) of how and why this solves the problem would really help to improve the quality of your post, and probably result in more up-votes. Remember that you are answering the question for readers in the future, not just the person asking now. Please [edit] your answer to add explanations and give an indication of what limitations and assumptions apply. – Yunnosch May 25 '22 at 05:52

score 0 · Answer 8 · answered Sep 22 '22 at 12:43

Kotlin code with view inflation:

fun getBitmapFromView(layoutInflater: LayoutInflater): Bitmap =
layoutInflater.inflate(R.layout.layoutID, null).run {
    //Bind data If you needed Example - [findViewById<TextView>(R.id.viewId).text = data]
    measure(View.MeasureSpec.UNSPECIFIED, View.MeasureSpec.UNSPECIFIED)
    layout(0, 0, measuredWidth, measuredHeight)
    val bitmap = Bitmap.createBitmap(measuredWidth, measuredHeight, Bitmap.Config.ARGB_8888)
    val canvas = Canvas(bitmap)
    draw(canvas)
    bitmap
}

layoutInflater can be retrieved like,

Inside activity or fragment -
this.layoutInflater
Outside activity or fragment -
val inflater = context.getSystemService(Context.LAYOUT_INFLATER_SERVICE) as LayoutInflater

view.getDrawingCache() is deprecated in Android API 28

8 Answers8

`Canvas Java`

`Canvas Kotlin`

`Example`

`PixelCopy Api`

Linked