如何在圆形imageView android上添加阴影和边框？

Question

我创建了一个带有以下问题的CircularImageView：在android中创建圆形图像视图在GitHub上下载项目1）这是CircularImageView类：public class CircularImageView extends ImageView {    public CircularImageView(Context context) {        super(context);    }    public CircularImageView(Context context, AttributeSet attrs) {        super(context, attrs);    }    public CircularImageView(Context context, AttributeSet attrs, int defStyle) {        super(context, attrs, defStyle);    }    @Override    protected void onDraw(Canvas canvas) {        Drawable drawable = getDrawable();        if (drawable == null) {            return;        }        if (getWidth() == 0 || getHeight() == 0) {            return;         }        Bitmap b =  ((BitmapDrawable)drawable).getBitmap() ;        Bitmap bitmap = b.copy(Bitmap.Config.ARGB_8888, true);              Bitmap roundBitmap =  getCroppedBitmap(bitmap, getWidth());        canvas.drawBitmap(roundBitmap, 0, 0, null);    }    public static Bitmap getCroppedBitmap(Bitmap bmp, int radius) {        Bitmap sbmp;        if(bmp.getWidth() != radius || bmp.getHeight() != radius)            sbmp = Bitmap.createScaledBitmap(bmp, radius, radius, false);        else            sbmp = bmp;        Bitmap output = Bitmap.createBitmap(sbmp.getWidth(), sbmp.getHeight(), Bitmap.Config.ARGB_8888);        final Rect rect = new Rect(0, 0, sbmp.getWidth(), sbmp.getHeight());        Paint paint = new Paint();        paint.setAntiAlias(true);        paint.setFilterBitmap(true);        paint.setDither(true);              paint.setColor(Color.parseColor("#BAB399"));        Canvas c = new Canvas(output);                c.drawARGB(0, 0, 0, 0);        c.drawCircle(sbmp.getWidth() / 2+0.7f, sbmp.getHeight() / 2+0.7f, sbmp.getWidth() / 2+0.1f, paint);        paint.setXfermode(new PorterDuffXfermode(Mode.SRC_IN));        c.drawBitmap(sbmp, rect, rect, paint);        return output;    }}

Answer 1

加入  canvas.drawCircle(getWidth() / 2, getWidth() / 2, getWidth() / 2, paint); 之前  canvas.drawBitmap(roundBitmap, 0, 0, null);

更改  c.drawCircle(sbmp.getWidth() / 2, sbmp.getHeight() / 2, sbmp.getWidth() / 2, paint); 为  c.drawCircle(sbmp.getWidth() / 2, sbmp.getHeight() / 2, sbmp.getWidth() / 2 - "the border with you prefer", paint);

希望能帮助到你。