Android实现人脸支付的示例代码

目录

• 效果展示
• 功能实现
• 人脸支付
• 密码框输入支付
• 尾言

效果展示

人脸支付效果视频

密码框输入支付效果视频

因为密码支付时会调起系统安全键盘，开启自动保护功能，防止泄露，会导致输入密码时录屏黑屏，故使用另一台手机拍摄。

功能实现

人脸支付

API初始化

        ftEngine = new FaceEngine();
        ftInitCode = ftEngine.init(this, DetectMode.ASF_DETECT_MODE_VIDEO, ConfigUtil.getFtOrient(this),
                16, MAX_DETECT_NUM, FaceEngine.ASF_FACE_DETECT);

        frEngine = new FaceEngine();
        frInitCode = frEngine.init(this, DetectMode.ASF_DETECT_MODE_IMAGE, DetectFaceOrientPriority.ASF_OP_0_ONLY,
                16, MAX_DETECT_NUM, FaceEngine.ASF_FACE_RECOGNITION);

        flEngine = new FaceEngine();
        flInitCode = flEngine.init(this, DetectMode.ASF_DETECT_MODE_IMAGE, DetectFaceOrientPriority.ASF_OP_0_ONLY,
                16, MAX_DETECT_NUM, FaceEngine.ASF_LIVENESS);

人脸特征提取

    private void searchFace(final FaceFeature frFace, final Integer requestId) {
        Observable.create(new ObservableOnSubscribe() {
                    @Override
                    public void subscribe(ObservableEmitter emitter) {
                        CompareResult compareResult = FaceServer.getInstance().getTopOfFaceLib(frFace);
                        emitter.onNext(compareResult);
                    }
                })
                .subscribeOn( Schedulers.computation())
                .observeOn( AndroidSchedulers.mainThread())
                .subscribe(new Observer() {
                    @Override
                    public void onSubscribe(Disposable d) {

                    }
                    @Override
                    public void onNext(CompareResult compareResult) {
                        if (compareResult == null || compareResult.getUserName() == null) {
                            requestFeatureStatusMap.put(requestId, RequestFeatureStatus.FAILED);
                            faceHelper.setName(requestId, "VISITOR " + requestId);
                            return;
                        }
                        if (compareResult.getSimilar() > SIMILAR_THRESHOLD) {
                            boolean isAdded = false;
                            if (compareResultList == null) {
                                requestFeatureStatusMap.put(requestId, RequestFeatureStatus.FAILED);
                                faceHelper.setName(requestId, "VISITOR " + requestId);
                                return;
                            }
                            for (CompareResult compareResult1 : compareResultList) {
                                if (compareResult1.getTrackId() == requestId) {
                                    isAdded = true;
                                    break;
                                }
                            }
                            if (!isAdded) {
                                //对于多人脸搜索，假如最大显示数量为 MAX_DETECT_NUM 且有新的人脸进入，则以队列的形式移除
                                if (compareResultList.size() >= MAX_DETECT_NUM) {
                                    compareResultList.remove(0);
                                    adapter.notifyItemRemoved(0);
                                }
                                //添加显示人员时，保存其trackId
                                compareResult.setTrackId(requestId);
                                compareResultList.add(compareResult);
                                adapter.notifyItemInserted(compareResultList.size() - 1);
                            }
                            requestFeatureStatusMap.put(requestId, RequestFeatureStatus.SUCCEED);
                            faceHelper.setName(requestId, getString(R.string.recognize_success_notice, compareResult.getUserName()));

                        } else {
                            faceHelper.setName(requestId, getString(R.string.recognize_failed_notice, "NOT_REGISTERED"));
                            retryRecognizeDelayed(requestId);
                        }
                    }

返回支付结果

根据匹配人脸注册时所获取的trackid，判断识别结果

Integer recognizeStatus = requestFeatureStatusMap.get(facePreviewInfoList.get(i).getTrackId());

根据返回码修改识别框颜色，并修改跳转状态的值

if (recognizeStatus != null) {
                handler.sendEmptyMessageDelayed( 1,1000 );
                if (recognizeStatus == RequestFeatureStatus.FAILED) {
                    color = RecognizeColor.COLOR_FAILED;
                    returnFlag = false;
                }
                if (recognizeStatus == RequestFeatureStatus.SUCCEED) {
                    color = RecognizeColor.COLOR_SUCCESS;
                    returnFlag = true;
                }
            }

利用异步通信进行延迟跳转

    Handler handler = new Handler(  ){
        @Override
        public void handleMessage(@NonNull Message msg) {
            super.handleMessage( msg );
            if (msg.what == 1){
                CountDown();
                handler.sendEmptyMessageDelayed( 1,1000 );
            }
        }
    };

密码框输入支付

自定义密码输入框控件

public class PayPwdEditText extends RelativeLayout {

    private EditText editText; //文本编辑框
    private Context context;

    private LinearLayout linearLayout; //文本密码的文本
    private TextView[] textViews; //文本数组

    private int pwdlength = 6; //密码长度， 默认6

    private OnTextFinishListener onTextFinishListener;


    public PayPwdEditText(Context context) {
        this(context, null);
    }

    public PayPwdEditText(Context context, AttributeSet attrs) {
        this(context, attrs, 0);
    }

    public PayPwdEditText(Context context, AttributeSet attrs, int defStyleAttr) {
        super(context, attrs, defStyleAttr);
        this.context = context;
    }

    /**
     * @param bgdrawable 背景drawable
     * @param pwdlength 密码长度
     * @param splilinewidth 分割线宽度
     * @param splilinecolor 分割线颜色
     * @param pwdcolor 密码字体颜色
     * @param pwdsize 密码字体大小
     */
    public void initStyle(int bgdrawable, int pwdlength, float splilinewidth, int splilinecolor, int pwdcolor, int pwdsize)
    {
        this.pwdlength = pwdlength;
        initEdit(bgdrawable);
        initShowInput(bgdrawable, pwdlength, splilinewidth, splilinecolor, pwdcolor, pwdsize);
    }

    /**
     * 初始化编辑框
     * @param bgcolor
     */
    private void initEdit(int bgcolor)
    {
        editText = new EditText(context);
        editText.setBackgroundResource(bgcolor);
        editText.setCursorVisible(false);
        editText.setTextSize(0);
        //设置为密文输入模式和数字
        editText.setInputType( InputType.TYPE_NUMBER_VARIATION_PASSWORD | InputType.TYPE_CLASS_NUMBER);
        //设置输入长度为6
        editText.setFilters(new InputFilter[]{new InputFilter.LengthFilter(pwdlength)});
        editText.addTextChangedListener(new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {
                Editable etext = editText.getText();
                Selection.setSelection(etext, etext.length());
            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count) {

            }

            @Override
            public void afterTextChanged(Editable s) {
                initDatas(s);
                if(s.length() == pwdlength)
                {
                    if(onTextFinishListener != null)
                    {
                        onTextFinishListener.onFinish(s.toString().trim());
                    }
                }
            }
        });
        LayoutParams lp = new LayoutParams( LayoutParams.MATCH_PARENT, ViewGroup.LayoutParams.MATCH_PARENT);
        lp.addRule( RelativeLayout.ALIGN_PARENT_BOTTOM, RelativeLayout.TRUE);
        addView(editText, lp);

    }

    /**
     * @param bgcolor 背景drawable
     * @param pwdlength 密码长度
     * @param slpilinewidth 分割线宽度
     * @param splilinecolor 分割线颜色
     * @param pwdcolor 密码字体颜色
     * @param pwdsize 密码字体大小
     */
    public void initShowInput(int bgcolor, int pwdlength, float slpilinewidth, int splilinecolor, int pwdcolor, int pwdsize)
    {
        //添加密码框父布局
        linearLayout = new LinearLayout(context);
        linearLayout.setBackgroundResource(bgcolor);
        LayoutParams layoutParams = new LayoutParams( LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT);
        linearLayout.setLayoutParams(layoutParams);
        linearLayout.setOrientation( LinearLayout.HORIZONTAL);
        addView(linearLayout);

        //添加密码框
        textViews = new TextView[pwdlength];
        LinearLayout.LayoutParams params = new LinearLayout.LayoutParams(0, LayoutParams.MATCH_PARENT);
        params.weight = 1;
        params.gravity = Gravity.CENTER;

        LinearLayout.LayoutParams params2 = new LinearLayout.LayoutParams(dip2px(context, slpilinewidth), LayoutParams.MATCH_PARENT);
        for(int i = 0; i < textViews.length; i++)
        {
            final int index = i;
            TextView textView = new TextView(context);
            textView.setGravity( Gravity.CENTER);
            textViews[i] = textView;
            textViews[i].setTextSize(pwdsize);
            textViews[i].setTextColor(context.getResources().getColor(pwdcolor));
            textViews[i].setInputType( InputType.TYPE_NUMBER_VARIATION_PASSWORD | InputType.TYPE_CLASS_NUMBER);
            linearLayout.addView(textView, params);
            if(i < textViews.length - 1)
            {
                View view = new View(context);
                view.setBackgroundColor(context.getResources().getColor(splilinecolor));
                linearLayout.addView(view, params2);
            }
        }
    }

    /**
     * 是否显示明文
     * @param showPwd
     */
    public void setShowPwd(boolean showPwd) {
        int length = textViews.length;
        for(int i = 0; i < length; i++) {
            if (showPwd) {
                textViews[i].setTransformationMethod( PasswordTransformationMethod.getInstance());
            } else {
                textViews[i].setTransformationMethod( HideReturnsTransformationMethod.getInstance());
            }
        }
    }

    /**
     * 设置显示类型
     * @param type
     */
    public void setInputType(int type)
    {
        int length = textViews.length;
        for(int i = 0; i < length; i++) {
            textViews[i].setInputType(type);
        }
    }

    /**
     * 清除文本框
     */
    public void clearText()
    {
        editText.setText("");
        for(int i = 0; i < pwdlength; i++)
        {
            textViews[i].setText("");
        }
    }

    public void setOnTextFinishListener(OnTextFinishListener onTextFinishListener) {
        this.onTextFinishListener = onTextFinishListener;
    }

    /**
     * 根据输入字符，显示密码个数
     * @param s
     */
    public void initDatas(Editable s)
    {
        if(s.length() > 0)
        {
            int length = s.length();
            for(int i = 0; i < pwdlength; i++)
            {
                if(i < length)
                {
                    for(int j = 0; j < length; j++)
                    {
                        char ch = s.charAt(j);
                        textViews[j].setText( String.valueOf(ch));
                    }
                }
                else
                {
                    textViews[i].setText("");
                }
            }
        }
        else
        {
            for(int i = 0; i < pwdlength; i++)
            {
                textViews[i].setText("");
            }
        }
    }

    public String getPwdText()
    {
        if(editText != null)
            return editText.getText().toString().trim();
        return "";
    }

    public static int dip2px(Context context, float dipValue) {
        final float scale = context.getResources().getDisplayMetrics().density;
        return (int) (dipValue * scale + 0.5f);
    }

    public interface OnTextFinishListener
    {
        void onFinish(String str);
    }

    public void setFocus()
    {
        editText.requestFocus();
        editText.setFocusable(true);
        showKeyBord(editText);
    }

    /**
     * 显示键盘
     * @param view
     */
    public void showKeyBord(View view)
    {
        InputMethodManager imm = (InputMethodManager) context.getSystemService( Context.INPUT_METHOD_SERVICE);
        imm.showSoftInput(view, InputMethodManager.SHOW_FORCED);
    }

}

初始化控件

分别对应密码框背景、密码位数、分割线宽度、分割线颜色、字体颜色、字体大小

mPayPwdEditText.initStyle( R.drawable.bg_paypassword_style,6,0.8f,R.color.colorWhite,R.color.colorWhite,35);

布局内用法

密码匹配

对控件进行输入事件监听，采用测试密码用例：123456，与回调接口所携带的数据进行匹配。

 mPayPwdEditText.setOnTextFinishListener( new PayPwdEditText.OnTextFinishListener() {
            @Override
            public void onFinish(String str) {
                if (str.equals( "123456" ))
                {
                    startActivity( new Intent( OrderInterface.this,PaySuccess.class ) );
                }else {
                    if (PassWordError == null) {
                        PassWordError = new Toast( OrderInterface.this );
                        View view = LayoutInflater.from( OrderInterface.this ).inflate( R.layout.passworderror,null,false );
                        ErrorTips = view.findViewById( R.id.ErrorTips );
                        PassWordError.setView( view );
                        //PassWordError.setGravity( Gravity.CENTER,0, ResHelper.dipToPx(OrderInterface.this, -100) );
                    }
                    PassWordError.show();
                    mPayPwdEditText.clearText();
                }
            }
        } );

其内部是对EditText控件进行输入事件监听。然后通过比对输入字符串长度与密码长度，然后返回其输入的字符串

            @Override
            public void afterTextChanged(Editable s) {
                initDatas(s);
                if(s.length() == pwdlength)
                {
                    if(onTextFinishListener != null)
                    {
                        onTextFinishListener.onFinish(s.toString().trim());
                    }
                }
            }

尾言

此人脸识别API采用虹软ArcSoft

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