如何模糊bottomappbar的背景？ android/kotlin

问题描述

如何在 android/kotlin 上为 bottomappbar 模糊背景 我将背景颜色设置为透明，但我希望它变得模糊

like this

解决方法

目前我使用 blurry 实现如下，但直到缓慢我找到了好方法，但它也可以帮助您进一步研究。

请注意我添加了自定义底栏

Bellow 是一些实用程序代码，可能对您有帮助

object BlurUtil {

    fun ImageView.performBlurView(
        activity: Activity,viewFrom: View,radius: Int,sampling: Int,colorCode: String,isShapedCut: Boolean
    ): Bitmap? {
        if (colorCode.isEmpty()) {
            val bitmap = Blurry.with(activity)
                .radius(radius)
                .sampling(sampling)
                .capture(viewFrom).get()
            val newBitmap = bitmap.getBitmapFromMain(this,isShapedCut)
            this.setImageDrawable(
                BitmapDrawable(
                    resources,newBitmap
                )
            )
            return newBitmap
        } else {
            val bitmap = Blurry.with(activity)
                .radius(radius)
                .sampling(1)
                .color(Color.parseColor(colorCode))
                .capture(viewFrom).get()
            val newBitmap = bitmap.getBitmapFromMain(this,newBitmap
                )
            )
            return newBitmap
        }
    }


    private fun Bitmap.getBitmapFromMain(
        viewTo: View,isShapedCut: Boolean
    ): Bitmap? {
        try {
            val x = returnCordinateScreen(viewTo)[0];

            val y = returnCordinateScreen(viewTo)[1];
            val width = viewTo.measuredWidth;
            var height = viewTo.measuredHeight;

            if ((y + height) > this.height) {
                height = (this.height) - (y)
            }
            return Bitmap.createBitmap(
                this,x,y,width,height
            )
            Timber.d("x coordinate1 =  %s ",x)
            Timber.d("y coordinate1 =  %s ",y)
            Timber.d("width viewTo1 =  %s ",width)
            Timber.d("height viewTo1 =  %s ",height)
            Timber.d("height bitmap1 =  %s ",this.height)
            Timber.d("width bitmap1 =  %s ",this.width)
        } catch (e: Exception) {
            e.printStackTrace()
            val x = returnCordinateWindow(viewTo)[0];
            val y = returnCordinateWindow(viewTo)[1];
            val width = viewTo.measuredWidth;
            var height = viewTo.measuredHeight;

            if ((y + height) > this.height) {
                height = this.height - y
            }

            return Bitmap.createBitmap(
                this,height
            )
            Timber.d("x coordinate2 =  %s ",x)
            Timber.d("y coordinate2 =  %s ",y)
            Timber.d("width viewTo2 =  %s ",width)
            Timber.d("height viewTo2 =  %s ",height)
            Timber.d("height bitmap2 =  %s ",this.height)
            Timber.d("width bitmap2 =  %s ",this.width)
        }
    }

    private fun returnCordinateScreen(viewFrom: View): IntArray {
        val locationFrom = IntArray(2)
        viewFrom.getLocationOnScreen(locationFrom)
        return locationFrom
    }

    private fun returnCordinateWindow(viewFrom: View): IntArray {
        val locationFrom = IntArray(2)
        viewFrom.getLocationInWindow(locationFrom)
        return locationFrom
    }


    private fun Bitmap.getCroppedBitmap(): Bitmap? {
        val output = Bitmap.createBitmap(
            this.width,this.height,Bitmap.Config.ARGB_8888
        )
        val canvas = Canvas(output)
        val color = -0xbdbdbe
        val paint = Paint()
        val rect = Rect(0,this.width,this.height)
        paint.setAntiAlias(true)
        canvas.drawARGB(0,0)
        paint.setColor(color)
        canvas.drawCircle(
            (this.width / 2).toFloat(),(this.height / 2).toFloat(),(this.width / 2).toFloat(),paint
        )
        paint.setXfermode(PorterDuffXfermode(PorterDuff.Mode.SRC_IN))
        canvas.drawBitmap(this,rect,paint)
        return output
    }

    private fun Bitmap.getCropBitmap(viewTo: View): Bitmap {
        return Bitmap.createBitmap(
            this,viewTo.coordinateOfView()[0],viewTo.coordinateOfView()[1],viewTo.measuredWidth,viewTo.measuredHeight
        )
    }

    private fun View.coordinateOfView(): IntArray {
        val locationFrom = IntArray(2)
        this.getLocationOnScreen(locationFrom)
        return locationFrom
    }
}