Android實(shí)現(xiàn)繪制發(fā)光效果

public?BlurMaskFilter(float?radius,?Blur?style)?

public class MaskFilterView extends View {    private Paint lightPaint;    private int centerX, centerY;    /** 發(fā)光范圍 */    private int radioRadius = 70;
    public MaskFilterView(Context context) {        super(context);        init();    }
    public MaskFilterView(Context context, @Nullable AttributeSet attrs) {        super(context, attrs);        init();    }
    private void init() {        lightPaint = new Paint();        setLayerType(LAYER_TYPE_SOFTWARE, null);        lightPaint.setColor(Color.parseColor("#EC3E3E"));        lightPaint.setMaskFilter(new BlurMaskFilter(radioRadius, BlurMaskFilter.Blur.INNER));    }
    @Override    protected void onMeasure(int widthMeasureSpec, int heightMeasureSpec) {        centerX = getLeft() + getMeasuredWidth()/2;        centerY = getTop() + getMeasuredHeight()/2;        super.onMeasure(widthMeasureSpec, widthMeasureSpec);    }
    public void setBlurType(int blurType) {        switch (blurType) {            case 0:                lightPaint.setMaskFilter(new BlurMaskFilter(radioRadius, BlurMaskFilter.Blur.INNER));                break;            case 1:                lightPaint.setMaskFilter(new BlurMaskFilter(radioRadius, BlurMaskFilter.Blur.NORMAL));                break;            case 2:                lightPaint.setMaskFilter(new BlurMaskFilter(radioRadius, BlurMaskFilter.Blur.SOLID));                break;            case 3:                lightPaint.setMaskFilter(new BlurMaskFilter(radioRadius, BlurMaskFilter.Blur.OUTER));                break;        }
        invalidate();    }
    @Override    protected void onDraw(Canvas canvas) {        super.onDraw(canvas);
        canvas.drawCircle(centerX, centerY, 150, lightPaint);    }}