关于增加描边功能的代码实现，请需要的自行拷贝！

[jdsjlzx]

首先将https://github.com/matrixxun/MaterialBadgeTextView/blob/master/MaterialBadgeTextView/library/src/main/java/com/matrixxun/starry/badgetextview/MaterialBadgeTextView.java 拷贝到自己工程，然后修改内部的自定义OvalShadow、SemiCircleRectDrawable即可。

代码如下：

private class OvalShadow extends OvalShape {
        private RadialGradient mRadialGradient;
        private Paint mShadowPaint;
        private int mCircleDiameter;

        public OvalShadow(int shadowRadius, int circleDiameter) {
            super();
            mShadowPaint = new Paint();
            mShadowRadius = shadowRadius;
            mCircleDiameter = circleDiameter;
            mRadialGradient = new RadialGradient(mCircleDiameter / 2, mCircleDiameter / 2,
                    mShadowRadius, new int[]{
                    FILL_SHADOW_COLOR, Color.TRANSPARENT
            }, null, Shader.TileMode.CLAMP);
            mShadowPaint.setShader(mRadialGradient);
        }

        @Override
        public void draw(Canvas canvas, Paint paint) {
            final int viewWidth = BadgeTextView.this.getWidth();
            final int viewHeight = BadgeTextView.this.getHeight();
            paint.setColor(backgroundColor);
            paint.setStyle(Paint.Style.FILL);
            //canvas.drawCircle(viewWidth / 2, viewHeight / 2, (mCircleDiameter / 2 + mShadowRadius), mShadowPaint);
            canvas.drawCircle(viewWidth / 2, viewHeight / 2, (mCircleDiameter / 2), paint);

            //圆描边
            paint.setColor(borderColor);
            paint.setStyle(Paint.Style.STROKE);
            paint.setStrokeWidth(borderWidth);
            paint.setAntiAlias(true);
            canvas.drawCircle(viewWidth / 2 + 1, viewHeight / 2 + 1, (mCircleDiameter / 2), paint);
        }
    }

    class SemiCircleRectDrawable extends Drawable {
        private final Paint mPaint;
        private RectF rectF;

        public Paint getPaint() {
            return mPaint;
        }

        public SemiCircleRectDrawable() {
            mPaint = new Paint();
            mPaint.setAntiAlias(true);
        }

        @Override
        public void setBounds(int left, int top, int right, int bottom) {
            super.setBounds(left, top, right, bottom);
            if (rectF == null) {
                rectF = new RectF(left + diffWH, top + mShadowRadius+4, right - diffWH, bottom - mShadowRadius-4);
            } else {
                rectF.set(left + diffWH, top + mShadowRadius+4, right - diffWH, bottom - mShadowRadius-4);
            }
        }

        @Override
        public void draw(Canvas canvas) {
            float R = (float)(rectF.bottom * 0.4);
            if (rectF.right < rectF.bottom) {
                R = (float)(rectF.right * 0.4);
            }
            mPaint.setColor(backgroundColor);
            mPaint.setStyle(Paint.Style.FILL);
            canvas.drawRoundRect(rectF, R, R, mPaint);

            //圆角矩形描边
            mPaint.setColor(borderColor);
            mPaint.setStyle(Paint.Style.STROKE);
            mPaint.setStrokeWidth(borderWidth);
            mPaint.setAntiAlias(true);
            canvas.drawRoundRect(rectF, R, R, mPaint);
        }

        @Override
        public void setAlpha(int alpha) {
            mPaint.setAlpha(alpha);
        }

        @Override
        public void setColorFilter(ColorFilter colorFilter) {
            mPaint.setColorFilter(colorFilter);
        }

        @Override
        public int getOpacity() {
            return PixelFormat.TRANSPARENT;
        }
    }

xml中配置如下：

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@android:color/white"
    android:orientation="vertical">


<com.xylife.common.widget.MaterialBadgeTextView
                    android:id="@+id/coupon_count"
                    android:layout_width="wrap_content"
                    android:layout_height="wrap_content"
                    android:layout_gravity="right|top"
                    android:layout_marginRight="@dimen/dp_10"
                    android:background="#FF4433"
                    app:mbtv_border_color="@android:color/white"
                    app:mbtv_border_width="1dp"
                    android:textColor="@android:color/white"
                     />
</LinearLayout>

[luongvo]

@jdsjlzx you can make a pull request 👍

[matrixxun]

Hi jdsjlzx, Would you agree with I will merge your code to master branch? @jdsjlzx

[jp1017]

描边时要判断下是否大于0：

            //圆角矩形描边
            if (borderWidth > 0) {
                mPaint.setColor(borderColor);
                mPaint.setStyle(Paint.Style.STROKE);
                mPaint.setStrokeWidth(borderWidth);
                mPaint.setAntiAlias(true);
                canvas.drawRoundRect(rectF, R, R, mPaint);
            }

[jdsjlzx]

@matrixxun ok,just do it