CODEWITHSUNDEEP
androidandroid-layoutkotlinandroid-bitmap
Alireza Bideli
Alireza Bideli

Reputation: 874

What is the simplest way to get screenshot in android using kotlin?

I have an imageView and several textViews My app allows user to drag textViews on evey coordinates of imageView (imageView is not full screen) that user wants .

In other words this app allows user to add several captions to user image and convert that image and captions to a single image and store it on user device.

According to one of stackOverFlow responses I can just convert one textView text to a bitamp

id there any way to screenshot from final image which user have created with its captions in kotlin??

This is my code:

@Throws(IOException::class)
fun foo(text: String) {
    val textPaint = object : Paint() {
        init {
            setColor(Color.WHITE)
            setTextAlign(Align.CENTER)
            setTextSize(20f)
            setAntiAlias(true)

        }
    }
    val bounds = Rect()
    textPaint.getTextBounds(text, 0, text.length, bounds)

    val bmp = Bitmap.createBitmap(mImgBanner.getWidth(), mImgBanner.getHeight(), Bitmap.Config.RGB_565) //use ARGB_8888 for better quality
    val canvas = Canvas(bmp)
    canvas.drawText(text, 0, 20f, textPaint)
    val path = Environment.getExternalStorageDirectory().getAbsolutePath() + "/image.png"
    val stream = FileOutputStream(path)
    bmp.compress(Bitmap.CompressFormat.PNG, 100, stream)
    bmp.recycle()
    stream.close()
}

Upvotes: 3

Views: 11666

Answers (2)

Antonis Radz
Antonis Radz

Reputation: 3097

Add desired views in xml layout inflate it and take screenshot of parent layout that is containing your views.

Code for taking screenshoot:

 fun takeScreenshotOfView(view: View, height: Int, width: Int): Bitmap {
    val bitmap = Bitmap.createBitmap(width, height, Bitmap.Config.ARGB_8888)
    val canvas = Canvas(bitmap)
    val bgDrawable = view.background
    if (bgDrawable != null) {
        bgDrawable.draw(canvas)
    } else {
        canvas.drawColor(Color.WHITE)
    }
    view.draw(canvas)
    return bitmap
}

Upvotes: 5

ladytoky0
ladytoky0

Reputation: 679

you can also use the extension View.drawToBitmap(). It will return a Bitmap

/**
 * Return a [Bitmap] representation of this [View].
 *
 * The resulting bitmap will be the same width and height as this view's current layout
 * dimensions. This does not take into account any transformations such as scale or translation.
 *
 * Note, this will use the software rendering pipeline to draw the view to the bitmap. This may
 * result with different drawing to what is rendered on a hardware accelerated canvas (such as
 * the device screen).
 *
 * If this view has not been laid out this method will throw a [IllegalStateException].
 *
 * @param config Bitmap config of the desired bitmap. Defaults to [Bitmap.Config.ARGB_8888].
 */
fun View.drawToBitmap(config: Bitmap.Config = Bitmap.Config.ARGB_8888): Bitmap {
    if (!ViewCompat.isLaidOut(this)) {
        throw IllegalStateException("View needs to be laid out before calling drawToBitmap()")
    }
    return Bitmap.createBitmap(width, height, config).applyCanvas {
        translate(-scrollX.toFloat(), -scrollY.toFloat())
        draw(this)
    }
}

Upvotes: 0

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