Android 高仿斗鱼滑动验证码

//生成验证码path
 private void createcaptchapath() {
 //原本打算随机生成gap，后来发现 宽度/3 效果比较好，
 int gap = mrandom.nextint(mcaptchawidth / 2);
 gap = mcaptchawidth / 3;
 //随机生成验证码阴影左上角 x y 点，
 mcaptchax = mrandom.nextint(mwidth - mcaptchawidth - gap);
 mcaptchay = mrandom.nextint(mheight - mcaptchaheight - gap);
 mcaptchapath.reset();
 mcaptchapath.lineto(0, 0);
 //从左上角开始 绘制一个不规则的阴影
 mcaptchapath.moveto(mcaptchax, mcaptchay);//左上角
 mcaptchapath.lineto(mcaptchax + gap, mcaptchay);
 //draw一个随机凹凸的圆
 drawpartcircle(new pointf(mcaptchax + gap, mcaptchay),
 new pointf(mcaptchax + gap * 2, mcaptchay),
 mcaptchapath, mrandom.nextboolean());
 mcaptchapath.lineto(mcaptchax + mcaptchawidth, mcaptchay);//右上角
 mcaptchapath.lineto(mcaptchax + mcaptchawidth, mcaptchay + gap);
 //draw一个随机凹凸的圆
 drawpartcircle(new pointf(mcaptchax + mcaptchawidth, mcaptchay + gap),
 new pointf(mcaptchax + mcaptchawidth, mcaptchay + gap * 2),
 mcaptchapath, mrandom.nextboolean());
 mcaptchapath.lineto(mcaptchax + mcaptchawidth, mcaptchay + mcaptchaheight);//右下角
 mcaptchapath.lineto(mcaptchax + mcaptchawidth - gap, mcaptchay + mcaptchaheight);
 //draw一个随机凹凸的圆
 drawpartcircle(new pointf(mcaptchax + mcaptchawidth - gap, mcaptchay + mcaptchaheight),
 new pointf(mcaptchax + mcaptchawidth - gap * 2, mcaptchay + mcaptchaheight),
 mcaptchapath, mrandom.nextboolean());
 mcaptchapath.lineto(mcaptchax, mcaptchay + mcaptchaheight);//左下角
 mcaptchapath.lineto(mcaptchax, mcaptchay + mcaptchaheight - gap);
 //draw一个随机凹凸的圆
 drawpartcircle(new pointf(mcaptchax, mcaptchay + mcaptchaheight - gap),
 new pointf(mcaptchax, mcaptchay + mcaptchaheight - gap * 2),
 mcaptchapath, mrandom.nextboolean());
 mcaptchapath.close();
 }

/**
 * 传入起点、终点 坐标、凹凸和path。
 * 会自动绘制凹凸的半圆弧
 *
 * @param start 起点坐标
 * @param end 终点坐标
 * @param path 半圆会绘制在这个path上
 * @param outer 是否凸半圆
 */
 public static void drawpartcircle(pointf start, pointf end, path path, boolean outer) {
 float c = 0.551915024494f;
 //中点
 pointf middle = new pointf(start.x + (end.x - start.x) / 2, start.y + (end.y - start.y) / 2);
 //半径
 float r1 = (float) math.sqrt(math.pow((middle.x - start.x), 2) + math.pow((middle.y - start.y), 2));
 //gap值
 float gap1 = r1 * c;
 if (start.x == end.x) {
 //绘制竖直方向的
 //是否是从上到下
 boolean toptobottom = end.y - start.y > 0 ? true : false;
 //以下是我写出了所有的计算公式后推的，不要问我过程，只可意会。
 int flag;//旋转系数
 if (toptobottom) {
 flag = 1;
 } else {
 flag = -1;
 }
 if (outer) {
 //凸的 两个半圆
 path.cubicto(start.x + gap1 * flag, start.y,
  middle.x + r1 * flag, middle.y - gap1 * flag,
  middle.x + r1 * flag, middle.y);
 path.cubicto(middle.x + r1 * flag, middle.y + gap1 * flag,
  end.x + gap1 * flag, end.y,
  end.x, end.y);
 } else {
 //凹的 两个半圆
 path.cubicto(start.x - gap1 * flag, start.y,
  middle.x - r1 * flag, middle.y - gap1 * flag,
  middle.x - r1 * flag, middle.y);
 path.cubicto(middle.x - r1 * flag, middle.y + gap1 * flag,
  end.x - gap1 * flag, end.y,
  end.x, end.y);
 }
 } else {
 //绘制水平方向的
 //是否是从左到右
 boolean lefttoright = end.x - start.x > 0 ? true : false;
 //以下是我写出了所有的计算公式后推的，不要问我过程，只可意会。
 int flag;//旋转系数
 if (lefttoright) {
 flag = 1;
 } else {
 flag = -1;
 }
 if (outer) {
 //凸 两个半圆
 path.cubicto(start.x, start.y - gap1 * flag,
  middle.x - gap1 * flag, middle.y - r1 * flag,
  middle.x, middle.y - r1 * flag);
 path.cubicto(middle.x + gap1 * flag, middle.y - r1 * flag,
  end.x, end.y - gap1 * flag,
  end.x, end.y);
 } else {
 //凹 两个半圆
 path.cubicto(start.x, start.y + gap1 * flag,
  middle.x - gap1 * flag, middle.y + r1 * flag,
  middle.x, middle.y + r1 * flag);
 path.cubicto(middle.x + gap1 * flag, middle.y + r1 * flag,
  end.x, end.y + gap1 * flag,
  end.x, end.y);
 }
/*
 没推导之前的公式在这里
 if (start.x < end.x) {
 if (outer) {
  //上左半圆 顺时针
  path.cubicto(start.x, start.y - gap1,
  middle.x - gap1, middle.y - r1,
  middle.x, middle.y - r1);
  //上右半圆:顺时针
  path.cubicto(middle.x + gap1, middle.y - r1,
  end.x, end.y - gap1,
  end.x, end.y);
 } else {
  //下左半圆 逆时针
  path.cubicto(start.x, start.y + gap1,
  middle.x - gap1, middle.y + r1,
  middle.x, middle.y + r1);
  //下右半圆 逆时针
  path.cubicto(middle.x + gap1, middle.y + r1,
  end.x, end.y + gap1,
  end.x, end.y);
 }
 } else {
 if (outer) {
  //下右半圆 顺时针
  path.cubicto(start.x, start.y + gap1,
  middle.x + gap1, middle.y + r1,
  middle.x, middle.y + r1);
  //下左半圆 顺时针
  path.cubicto(middle.x - gap1, middle.y + r1,
  end.x, end.y + gap1,
  end.x, end.y);
 }
 }*/
 }
 }

 //生成滑块
 private void craetemask() {
 mmaskbitmap = getmaskbitmap(((bitmapdrawable) getdrawable()).getbitmap(), mcaptchapath);
 //滑块阴影
 mmaskshadowbitmap = mmaskbitmap.extractalpha();
 //拖动的位移重置
 mdrageroffset = 0;
 //isdrawmask 绘制失败闪烁动画用
 isdrawmask = true;
 }
 //抠图
 private bitmap getmaskbitmap(bitmap mbitmap, path mask) {
 //以控件宽高 create一块bitmap
 bitmap tempbitmap = bitmap.createbitmap(mwidth, mheight, bitmap.config.argb_8888);
 //把创建的bitmap作为画板
 canvas mcanvas = new canvas(tempbitmap);
 //有锯齿 且无法解决,所以换成xfermode的方法做
 //mcanvas.clippath(mask);
 // 抗锯齿
 mcanvas.setdrawfilter(new paintflagsdrawfilter(0, paint.anti_alias_flag | paint.filter_bitmap_flag));
 //绘制用于遮罩的圆形
 mcanvas.drawpath(mask, mmaskpaint);
 //设置遮罩模式(图像混合模式)
 mmaskpaint.setxfermode(mporterduffxfermode);
 //★考虑到scaletype等因素，要用matrix对bitmap进行缩放
 mcanvas.drawbitmap(mbitmap, getimagematrix(), mmaskpaint);
 mmaskpaint.setxfermode(null);
 return tempbitmap;
 }

 @override
 protected void ondraw(canvas canvas) {
 super.ondraw(canvas);
 //继承自imageview，所以bitmap，imageview已经帮我们draw好了。
 //我只在上面绘制和验证码相关的部分，
 //是否处于验证模式，在验证成功后 为false，其余情况为true
 if (ismatchmode) {
 //首先绘制验证码阴影
 if (mcaptchapath != null) {
 canvas.drawpath(mcaptchapath, mpaint);
 }
 //绘制滑块
 // isdrawmask 绘制失败闪烁动画用
 if (null != mmaskbitmap && null != mmaskshadowbitmap && isdrawmask) {
 // 先绘制阴影
 canvas.drawbitmap(mmaskshadowbitmap, -mcaptchax + mdrageroffset, 0, mmaskshadowpaint);
 canvas.drawbitmap(mmaskbitmap, -mcaptchax + mdrageroffset, 0, null);
 }
 //验证成功，白光扫过的动画，这一块动画感觉不完美，有提高空间
 if (isshowsuccessanim) {
 canvas.translate(msuccessanimoffset, 0);
 canvas.drawpath(msuccesspath, msuccesspaint);
 }
 }
 }

mpaint = new paint(paint.anti_alias_flag | paint.dither_flag);
 mpaint.setcolor(0x77000000);
 //mpaint.setstyle(paint.style.stroke);
 // 设置画笔遮罩滤镜
 mpaint.setmaskfilter(new blurmaskfilter(20, blurmaskfilter.blur.solid));

msuccesspaint = new paint();
 msuccesspaint.setshader(new lineargradient(0, 0, width, 0, new int[]{
 0x11ffffff, 0x88ffffff}, null,
 shader.tilemode.mirror));
 //模仿斗鱼 是一个平行四边形滚动过去
 msuccesspath = new path();
 msuccesspath.moveto(0, 0);
 msuccesspath.rlineto(width, 0);
 msuccesspath.rlineto(width / 2, mheight);
 msuccesspath.rlineto(-width, 0);
 msuccesspath.close();

 /**
 * 重置验证码滑动距离,(一般用于验证失败)
 */
 public void resetcaptcha() {
 mdrageroffset = 0;
 invalidate();
 }
 /**
 * 最大可滑动值
 * @return
 */
 public int getmaxswipevalue() {
 //return ((bitmapdrawable) getdrawable()).getbitmap().getwidth() - mcaptchawidth;
 //返回控件宽度
 return mwidth - mcaptchawidth;
 }
 /**
 * 设置当前滑动值
 * @param value
 */
 public void setcurrentswipevalue(int value) {
 mdrageroffset = value;
 invalidate();
 }

public interface oncaptchamatchcallback {
 void matchsuccess(swipecaptchaview swipecaptchaview);
 void matchfailed(swipecaptchaview swipecaptchaview);
 }
 /**
 * 验证码验证的回调
 */
 private oncaptchamatchcallback oncaptchamatchcallback;
 public oncaptchamatchcallback getoncaptchamatchcallback() {
 return oncaptchamatchcallback;
 }
 /**
 * 设置验证码验证回调
 *
 * @param oncaptchamatchcallback
 * @return
 */
 public swipecaptchaview setoncaptchamatchcallback(oncaptchamatchcallback oncaptchamatchcallback) {
 this.oncaptchamatchcallback = oncaptchamatchcallback;
 return this;
 }
 /**
 * 校验
 */
 public void matchcaptcha() {
 if (null != oncaptchamatchcallback && ismatchmode) {
 //这里验证逻辑，是通过比较，拖拽的距离 和 验证码起点x坐标。 默认3dp以内算是验证成功。
 if (math.abs(mdrageroffset - mcaptchax) < mmatchdeviation) {
 //成功的动画
 msuccessanim.start();
 } else {
 mfailanim.start();
 }
 }
 }

//验证动画初始化区域
 private void creatematchanim() {
 mfailanim = valueanimator.offloat(0, 1);
 mfailanim.setduration(100)
 .setrepeatcount(4);
 mfailanim.setrepeatmode(valueanimator.reverse);
 //失败的时候先闪一闪动画 斗鱼是 隐藏-显示 -隐藏 -显示
 mfailanim.addlistener(new animatorlisteneradapter() {
 @override
 public void onanimationend(animator animation) {
 oncaptchamatchcallback.matchfailed(swipecaptchaview.this);
 }
 });
 mfailanim.addupdatelistener(new valueanimator.animatorupdatelistener() {
 @override
 public void onanimationupdate(valueanimator animation) {
 float animatedvalue = (float) animation.getanimatedvalue();
 if (animatedvalue < 0.5f) {
  isdrawmask = false;
 } else {
  isdrawmask = true;
 }
 invalidate();
 }
 });
 int width = (int) typedvalue.applydimension(typedvalue.complex_unit_dip, 100, getresources().getdisplaymetrics());
 msuccessanim = valueanimator.ofint(mwidth + width, 0);
 msuccessanim.setduration(500);
 msuccessanim.setinterpolator(new fastoutlinearininterpolator());
 msuccessanim.addupdatelistener(new valueanimator.animatorupdatelistener() {
 @override
 public void onanimationupdate(valueanimator animation) {
 msuccessanimoffset = (int) animation.getanimatedvalue();
 invalidate();
 }
 });
 msuccessanim.addlistener(new animatorlisteneradapter() {
 @override
 public void onanimationstart(animator animation) {
 isshowsuccessanim = true;
 }
 @override
 public void onanimationend(animator animation) {
 oncaptchamatchcallback.matchsuccess(swipecaptchaview.this);
 isshowsuccessanim = false;
 ismatchmode = false;
 }
 });
 msuccesspaint = new paint();
 msuccesspaint.setshader(new lineargradient(0, 0, width, 0, new int[]{
 0x11ffffff, 0x88ffffff}, null,
 shader.tilemode.mirror));
 //模仿斗鱼 是一个平行四边形滚动过去
 msuccesspath = new path();
 msuccesspath.moveto(0, 0);
 msuccesspath.rlineto(width, 0);
 msuccesspath.rlineto(width / 2, mheight);
 msuccesspath.rlineto(-width, 0);
 msuccesspath.close();
 }

<?xml version="1.0" encoding="utf-8"?>
<relativelayout
 ......
>
 <com.mcxtzhang.captchalib.swipecaptchaview
 android:id="@+id/swipecaptchaview"
 android:layout_width="300dp"
 android:layout_height="150dp"
 android:layout_centerhorizontal="true"
 android:scaletype="centercrop"
 android:src="@drawable/pic11"
 app:captchaheight="30dp"
 app:captchawidth="30dp"/>
 <seekbar
 android:id="@+id/dragbar"
 android:layout_width="320dp"
 android:layout_height="60dp"
 android:layout_below="@id/swipecaptchaview"
 android:layout_centerhorizontal="true"
 android:layout_margintop="30dp"
 android:progressdrawable="@drawable/dragbg"
 android:thumb="@drawable/thumb_bg"/>
 <button
 android:id="@+id/btnchange"
 android:layout_width="wrap_content"
 android:layout_height="wrap_content"
 android:layout_alignparentright="true"
 android:text="老板换码"/>
</relativelayout>

public class mainactivity extends appcompatactivity {
 swipecaptchaview mswipecaptchaview;
 seekbar mseekbar;
 @override
 protected void oncreate(bundle savedinstancestate) {
 super.oncreate(savedinstancestate);
 setcontentview(r.layout.activity_main);
 mswipecaptchaview = (swipecaptchaview) findviewbyid(r.id.swipecaptchaview);
 mseekbar = (seekbar) findviewbyid(r.id.dragbar);
 findviewbyid(r.id.btnchange).setonclicklistener(new view.onclicklistener() {
 @override
 public void onclick(view v) {
 mswipecaptchaview.createcaptcha();
 mseekbar.setenabled(true);
 mseekbar.setprogress(0);
 }
 });
 mswipecaptchaview.setoncaptchamatchcallback(new swipecaptchaview.oncaptchamatchcallback() {
 @override
 public void matchsuccess(swipecaptchaview swipecaptchaview) {
 toast.maketext(mainactivity.this, "恭喜你啊 验证成功 可以搞事情了", toast.length_short).show();
 mseekbar.setenabled(false);
 }
 @override
 public void matchfailed(swipecaptchaview swipecaptchaview) {
 toast.maketext(mainactivity.this, "你有80%的可能是机器人，现在走还来得及", toast.length_short).show();
 swipecaptchaview.resetcaptcha();
 mseekbar.setprogress(0);
 }
 });
 mseekbar.setonseekbarchangelistener(new seekbar.onseekbarchangelistener() {
 @override
 public void onprogresschanged(seekbar seekbar, int progress, boolean fromuser) {
 mswipecaptchaview.setcurrentswipevalue(progress);
 }
 @override
 public void onstarttrackingtouch(seekbar seekbar) {
 //随便放这里是因为控件
 mseekbar.setmax(mswipecaptchaview.getmaxswipevalue());
 }
 @override
 public void onstoptrackingtouch(seekbar seekbar) {
 log.d("zxt", "onstoptrackingtouch() called with: seekbar = [" + seekbar + "]");
 mswipecaptchaview.matchcaptcha();
 }
 });
 //从网络加载图片也ok
 glide.with(this)
 .load("http://www.investide.cn/data/edata/image/20151201/20151201180507_281.jpg")
 .asbitmap()
 .into(new simpletarget<bitmap>() {
  @override
  public void onresourceready(bitmap resource, glideanimation<? super bitmap> glideanimation) {
  mswipecaptchaview.setimagebitmap(resource);
  mswipecaptchaview.createcaptcha();
  }
 });
 }
}