How to crop circular area from bitmap in Android

I believe the easiest solution is to create a BitmapShader of your Bitmap, pass it to your paint object and then simply call something like canvas.drawCircle(cx, cy, radius, paint);

for example

Paint p = new Paint();
p.setShader(new BitmapShader(myBitmap, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP));
canvas.drawCircle(getWidth() / 2, getHeight() / 2, getHeight() / 2, p);

This is how https://github.com/hdodenhof/CircleImageView also has done it, you can read the source code here: https://github.com/hdodenhof/CircleImageView/blob/master/circleimageview/src/main/java/de/hdodenhof/circleimageview/CircleImageView.java

Here is Kotlin variant using extension method

/**
 * Creates new circular bitmap based on original one.
 */
fun Bitmap.getCircularBitmap(config: Bitmap.Config = Bitmap.Config.ARGB_8888): Bitmap {
    // circle configuration
    val circlePaint = Paint().apply { isAntiAlias = true }
    val circleRadius = Math.max(width, height) / 2f

    // output bitmap
    val outputBitmapPaint = Paint(circlePaint).apply { xfermode = PorterDuffXfermode(PorterDuff.Mode.SRC_IN) }
    val outputBounds = Rect(0, 0, width, height)
    val output = Bitmap.createBitmap(width, height, config)

    return Canvas(output).run {
        drawCircle(circleRadius, circleRadius, circleRadius, circlePaint)
        drawBitmap(this@getCircularBitmap, outputBounds, outputBounds, outputBitmapPaint)
        output
    }
}

**Jst Add this to your image Id and get the circuler image.**

 imgUserProfile.setImageBitmap(getCircularCenterCropBitmap(bitmap, (int) (150 * denisty)));

Method:-

public void Bitmap getCircularCenterCropBitmap(Bitmap originalBmp, int diameter) {
        Bitmap resizedBmp = BitmapUtils.getScaledCroppedBitmap(originalBmp, diameter, diameter);
        return BitmapUtils.getRoundedCircularBitmap(resizedBmp, diameter / 2);
    }

For kotlin:

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

kotlin, put it in Ext.kt

 private fun Bitmap.getCircledBitmap(): Bitmap {
    val output = Bitmap.createBitmap(this.width, this.height, Bitmap.Config.ARGB_8888)
    val canvas = Canvas(output)
    val paint = Paint()
    val rect = Rect(0, 0, this.width, this.height)
    paint.isAntiAlias = true
    canvas.drawARGB(0, 0, 0, 0)
    canvas.drawCircle(this.width / 2f, this.height / 2f, this.width / 2f, paint)
    paint.xfermode = PorterDuffXfermode(PorterDuff.Mode.SRC_IN)
    canvas.drawBitmap(this, rect, rect, paint)
    return output
}