Android MTK 屏下指纹的调试过程记录

Demo链接 -----> https://download.csdn.net/download/u011694328/89118346

一些品牌手机都有了屏下指纹的功能，还算是个比较新颖的功能，最近有项目需要使用屏下指纹，使用的是汇顶（Goodix）的指纹方案，经过坚难尝试，终于实现了屏下指纹录入与解锁，下面记录一些知识要点，同时分享给遇到相同问题的。

1，自从Android 12 以后， SystemUI 里是自带了屏下指纹方案的. 具体代码是在 frameworks\base\packages\SystemUI\src\com\android\systemui\biometrics ，所有以 Udfps 开头的类均是跟屏下指纹相关。如果要打开自带的屏下指纹UI ，需要在 frameworks 里设置指纹传感器的 X轴， Y轴，半径大小，贴上详细代码。

路径 -----> frameworks/base/services/core/java/com/android/server/biometrics/AuthService.java

final int[] udfpsProps = getContext().getResources().getIntArray(com.android.internal.R.array.config_udfps_sensor_props);

重要的是 config_udfps_sensor_props 数组，默认的是空，下面是原始的代码

    <!-- The properties of a UDFPS sensor in pixels, in the order listed below: -->
    <integer-array name="config_udfps_sensor_props" translatable="false" >
      <!--
        <item>sensorLocationX</item>
        <item>sensorLocationY</item>
        <item>sensorRadius</item>
      -->
    </integer-array>

// The existence of config_udfps_sensor_props indicates that the sensor is UDFPS.

注释的意思是如果这个数组存在，表明是屏下指纹。这里要根据屏幕上传感器的位置来确定 X Y R. 指纹方案商会提供。默认的指纹如下图。

2 ，打开传感器后，调好正确的位置，下面是到设置里录入指纹。

代码路径 packages\apps\Settings\src\com\android\settings\biometrics\fingerprint\FingerprintEnrollEnrolling.java

下面贴上我修改过的代码，

package com.android.settings.biometrics.fingerprint;

import android.animation.Animator;
import android.animation.ObjectAnimator;
import android.annotation.IntDef;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.app.Dialog;
import android.app.settings.SettingsEnums;
import android.content.DialogInterface;
import android.content.Intent;
import android.content.res.Configuration;
import android.graphics.drawable.Animatable2;
import android.graphics.drawable.AnimatedVectorDrawable;
import android.graphics.drawable.Drawable;
import android.graphics.drawable.LayerDrawable;
import android.hardware.fingerprint.FingerprintManager;
import android.hardware.fingerprint.FingerprintSensorPropertiesInternal;
import android.os.Bundle;
import android.os.Process;
import android.os.VibrationAttributes;
import android.os.VibrationEffect;
import android.os.Vibrator;
import android.text.TextUtils;
import android.util.Log;
import android.view.MotionEvent;
import android.view.OrientationEventListener;
import android.view.Surface;
import android.view.View;
import android.view.accessibility.AccessibilityEvent;
import android.view.accessibility.AccessibilityManager;
import android.view.animation.AnimationUtils;
import android.view.animation.Interpolator;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.TextView;
import com.android.settings.R;
import com.android.settings.biometrics.BiometricEnrollSidecar;
import com.android.settings.biometrics.BiometricUtils;
import com.android.settings.biometrics.BiometricsEnrollEnrolling;
import com.android.settings.core.instrumentation.InstrumentedDialogFragment;
import com.android.settingslib.display.DisplayDensityUtils;
import com.airbnb.lottie.LottieAnimationView;
import com.google.android.setupcompat.template.FooterBarMixin;
import com.google.android.setupcompat.template.FooterButton;
import com.google.android.setupcompat.util.WizardManagerHelper;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.util.HashMap;
import java.util.List;

//import com.goodix.fingerprint.ShenzhenConstants;
//import com.goodix.fingerprint.service.GoodixFingerprintManager;

public class FingerprintEnrollEnrolling extends BiometricsEnrollEnrolling {

    private static final String TAG = "zgyFp";
    static final String TAG_SIDECAR = "sidecar";

    private static final int PROGRESS_BAR_MAX = 10000;

    private static final int STAGE_UNKNOWN = -1;
    private static final int STAGE_CENTER = 0;
    private static final int STAGE_GUIDED = 1;
    private static final int STAGE_FINGERTIP = 2;
    private static final int STAGE_LEFT_EDGE = 3;
    private static final int STAGE_RIGHT_EDGE = 4;

    @IntDef({STAGE_UNKNOWN, STAGE_CENTER, STAGE_GUIDED, STAGE_FINGERTIP, STAGE_LEFT_EDGE, STAGE_RIGHT_EDGE})
    @Retention(RetentionPolicy.SOURCE)
    private @interface EnrollStage {}

    /**
     * If we don't see progress during this time, we show an error message to remind the users that
     * they need to lift the finger and touch again.
     */
    private static final int HINT_TIMEOUT_DURATION = 2500;

    private static final VibrationEffect VIBRATE_EFFECT_ERROR = VibrationEffect.createWaveform(new long[] {0, 5, 55, 60}, -1);
    private static final VibrationAttributes FINGERPRINT_ENROLLING_SONFICATION_ATTRIBUTES = VibrationAttributes.createForUsage(VibrationAttributes.USAGE_ACCESSIBILITY);

    private FingerprintManager mFingerprintManager;
    private boolean mCanAssumeUdfps;
    @Nullable private ProgressBar mProgressBar;
    private ObjectAnimator mProgressAnim;
    private TextView mDescriptionText;
    private TextView mErrorText;
    private Interpolator mFastOutSlowInInterpolator;
    private Interpolator mLinearOutSlowInInterpolator;
    private Interpolator mFastOutLinearInInterpolator;
    private boolean mAnimationCancelled;
    @Nullable private AnimatedVectorDrawable mIconAnimationDrawable;
    @Nullable private AnimatedVectorDrawable mIconBackgroundBlinksDrawable;
    private boolean mRestoring;
    private Vibrator mVibrator;
    private boolean mIsSetupWizard;
    private AccessibilityManager mAccessibilityManager;
    private boolean mIsAccessibilityEnabled;
    private LottieAnimationView mIllustrationLottie;
    private boolean mHaveShownUdfpsTipLottie;
    private boolean mHaveShownUdfpsLeftEdgeLottie;
    private boolean mHaveShownUdfpsRightEdgeLottie;
    private boolean mShouldShowLottie;

    private OrientationEventListener mOrientationEventListener;
    private int mPreviousRotation = 0;
    
//    private GoodixFingerprintManager mGoodixFingerprintManager;
//    private ImageView mFingerprintAnimator;
//    private CircleView mCircleView;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        int flags = View.SYSTEM_UI_FLAG_FULLSCREEN | View.SYSTEM_UI_FLAG_HIDE_NAVIGATION | View.SYSTEM_UI_FLAG_IMMERSIVE_STICKY;
        getWindow().getDecorView().setSystemUiVisibility(flags);

        mFingerprintManager = getSystemService(FingerprintManager.class);
        
        final List<FingerprintSensorPropertiesInternal> props = mFingerprintManager.getSensorPropertiesInternal();
        mCanAssumeUdfps = props.size() == 1 && props.get(0).isAnyUdfpsType();

        mAccessibilityManager = getSystemService(AccessibilityManager.class);
        mIsAccessibilityEnabled = mAccessibilityManager.isEnabled();

         listenOrientationEvent();

          setContentView(R.layout.fingerprint_enroll_enrolling_base); 

            mIsSetupWizard = WizardManagerHelper.isAnySetupWizard(getIntent());
            
            updateTitleAndDescription();
            
//            mGoodixFingerprintManager = GoodixFingerprintManager.getFingerprintManager(this);
//            
//            getMainThreadHandler().postDelayed(mDelayedSendCmd, getFinishDelay());

        DisplayDensityUtils displayDensity = new DisplayDensityUtils(getApplicationContext());
        int currentDensityIndex = displayDensity.getCurrentIndex();
        final int currentDensity = displayDensity.getValues()[currentDensityIndex];
        final int defaultDensity = displayDensity.getDefaultDensity();
        mShouldShowLottie = defaultDensity == currentDensity;
        
        boolean isLandscape = BiometricUtils.isReverseLandscape(getApplicationContext()) || BiometricUtils.isLandscape(getApplicationContext());

        updateOrientation((isLandscape ? Configuration.ORIENTATION_LANDSCAPE : Configuration.ORIENTATION_PORTRAIT));

        mErrorText = findViewById(R.id.error_text);
        mProgressBar = findViewById(R.id.fingerprint_progress_bar);
//        mFingerprintAnimator = findViewById(R.id.fingerprint_image_hint);
//        mCircleView = findViewById(R.id.circle_view);
        mVibrator = getSystemService(Vibrator.class);
        
//        setSensorAreaOnTouchListener(mFingerprintAnimator);
        
        final LayerDrawable fingerprintDrawable = mProgressBar != null ? (LayerDrawable) mProgressBar.getBackground() : null;
        if (fingerprintDrawable != null) {
            mIconAnimationDrawable = (AnimatedVectorDrawable) fingerprintDrawable.findDrawableByLayerId(R.id.fingerprint_animation);
            mIconBackgroundBlinksDrawable = (AnimatedVectorDrawable) fingerprintDrawable.findDrawableByLayerId(R.id.fingerprint_background);
            mIconAnimationDrawable.registerAnimationCallback(mIconAnimationCallback);
        }

        mFastOutSlowInInterpolator = AnimationUtils.loadInterpolator(this, android.R.interpolator.fast_out_slow_in);
        mLinearOutSlowInInterpolator = AnimationUtils.loadInterpolator(this, android.R.interpolator.linear_out_slow_in);
        mFastOutLinearInInterpolator = AnimationUtils.loadInterpolator(this, android.R.interpolator.fast_out_linear_in);
        
        mRestoring = savedInstanceState != null;
    }

//    private void setSensorAreaOnTouchListener(View view) {
//        view.setOnTouchListener(new View.OnTouchListener() {
//            public boolean onTouch(View view, MotionEvent motionEvent) {
//                switch (motionEvent.getAction()) {
//                    case MotionEvent.ACTION_DOWN:
//                        mFingerprintAnimator.setVisibility(View.GONE);
//                        mCircleView.setVisibility(View.VISIBLE);
//                        break;
//                    case MotionEvent.ACTION_UP:
//                    case MotionEvent.ACTION_CANCEL:
//						 mFingerprintAnimator.setVisibility(View.VISIBLE);
//						 mCircleView.setVisibility(View.GONE);
//                        break;
//                }
//                return true;
//            }
//        });
//    }
    
    @Override
    protected BiometricEnrollSidecar getSidecar() {
        final FingerprintEnrollSidecar sidecar = new FingerprintEnrollSidecar();
        sidecar.setEnrollReason(FingerprintManager.ENROLL_ENROLL);
        return sidecar;
    }

    @Override
    protected boolean shouldStartAutomatically() {
        if (mCanAssumeUdfps) {
            return mRestoring;
        }
        return true;
    }

    @Override
    protected void onStart() {
        super.onStart();
        updateProgress(false);
        updateTitleAndDescription();
        if (mRestoring) {
            startIconAnimation();
        }
    }
    
//    @Override
//    protected void onResume() {
//        super.onResume();
//        mGoodixFingerprintManager.showSensorViewWindow(true);
//        
//        mGoodixFingerprintManager.setHBMMode(true);
//    }
    
    @Override
    public void onEnterAnimationComplete() {
        super.onEnterAnimationComplete();
        if (mCanAssumeUdfps) {
            startEnrollment();
        }
        mAnimationCancelled = false;
        startIconAnimation();
    }

    private void startIconAnimation() {
        if (mIconAnimationDrawable != null) {
            mIconAnimationDrawable.start();
        }
    }

    private void stopIconAnimation() {
        mAnimationCancelled = true;
        if (mIconAnimationDrawable != null) {
            mIconAnimationDrawable.stop();
        }
    }

    @Override
    protected void onStop() {
        super.onStop();
        stopIconAnimation();
        
//        mGoodixFingerprintManager.showSensorViewWindow(false);
//        mGoodixFingerprintManager.setHBMMode(false);
    }
    
//    @Override
//    protected void onPause() {
//        super.onPause();
//        android.util.Log.d("zgyFp", "--onPause--");
//        mGoodixFingerprintManager.showSensorViewWindow(false);
//    }

    @Override
    protected void onDestroy() {
        stopListenOrientationEvent();
        super.onDestroy();
    }
    
    private void animateProgress(int progress) {
        if (mCanAssumeUdfps) {
            if (progress >= PROGRESS_BAR_MAX) {
                getMainThreadHandler().postDelayed(mDelayedFinishRunnable, getFinishDelay());
            }
            return;
        }
        if (mProgressAnim != null) {
            mProgressAnim.cancel();
        }
        ObjectAnimator anim = ObjectAnimator.ofInt(mProgressBar, "progress", mProgressBar.getProgress(), progress);
        anim.addListener(mProgressAnimationListener);
        anim.setInterpolator(mFastOutSlowInInterpolator);
        anim.setDuration(250);
        anim.start();
        mProgressAnim = anim;
    }

    private void animateFlash() {
        if (mIconBackgroundBlinksDrawable != null) {
            mIconBackgroundBlinksDrawable.start();
        }
    }

    protected Intent getFinishIntent() {
        return new Intent(this, FingerprintEnrollFinish.class);
    }

    private void updateTitleAndDescription() {
        if (mCanAssumeUdfps) {
            updateTitleAndDescriptionForUdfps();
            return;
        }

        if (mSidecar == null || mSidecar.getEnrollmentSteps() == -1) {
            setDescriptionText(R.string.security_settings_fingerprint_enroll_start_message);
        } else {
            setDescriptionText(R.string.security_settings_fingerprint_enroll_repeat_message);
        }
    }

    private void updateTitleAndDescriptionForUdfps() {
        switch (getCurrentStage()) {
            case STAGE_CENTER:
                setHeaderText(R.string.security_settings_fingerprint_enroll_repeat_title);
                setDescriptionText(R.string.security_settings_udfps_enroll_start_message);
                break;

            case STAGE_GUIDED:
                setHeaderText(R.string.security_settings_fingerprint_enroll_repeat_title);
                if (mIsAccessibilityEnabled) {
                    setDescriptionText(R.string.security_settings_udfps_enroll_repeat_a11y_message);
                } else {
                    setDescriptionText(R.string.security_settings_udfps_enroll_repeat_message);
                }
                break;

            case STAGE_FINGERTIP:
                setHeaderText(R.string.security_settings_udfps_enroll_fingertip_title);
                if (!mHaveShownUdfpsTipLottie && mIllustrationLottie != null) {
                    mHaveShownUdfpsTipLottie = true;
                    setDescriptionText("");
                    mIllustrationLottie.setAnimation(R.raw.udfps_tip_hint_lottie);
                    mIllustrationLottie.setVisibility(View.VISIBLE);
                    mIllustrationLottie.playAnimation();
                    mIllustrationLottie.setContentDescription(getString(R.string.security_settings_udfps_tip_fingerprint_help));
                }
                break;

            case STAGE_LEFT_EDGE:
                setHeaderText(R.string.security_settings_udfps_enroll_left_edge_title);
                if (!mHaveShownUdfpsLeftEdgeLottie && mIllustrationLottie != null) {
                    mHaveShownUdfpsLeftEdgeLottie = true;
                    setDescriptionText("");
                    mIllustrationLottie.setAnimation(R.raw.udfps_left_edge_hint_lottie);
                    mIllustrationLottie.setVisibility(View.VISIBLE);
                    mIllustrationLottie.playAnimation();
                    mIllustrationLottie.setContentDescription(getString(R.string.security_settings_udfps_side_fingerprint_help));
                } else if (mIllustrationLottie == null) {
                    if (isStageHalfCompleted()) {
                        setDescriptionText(R.string.security_settings_fingerprint_enroll_repeat_message);
                    } else {
                        setDescriptionText(R.string.security_settings_udfps_enroll_edge_message);
                    }
                }
                break;
            case STAGE_RIGHT_EDGE:
                setHeaderText(R.string.security_settings_udfps_enroll_right_edge_title);
                if (!mHaveShownUdfpsRightEdgeLottie && mIllustrationLottie != null) {
                    mHaveShownUdfpsRightEdgeLottie = true;
                    setDescriptionText("");
                    mIllustrationLottie.setAnimation(R.raw.udfps_right_edge_hint_lottie);
                    mIllustrationLottie.setVisibility(View.VISIBLE);
                    mIllustrationLottie.playAnimation();
                    mIllustrationLottie.setContentDescription(getString(R.string.security_settings_udfps_side_fingerprint_help));
                } else if (mIllustrationLottie == null) {
                    if (isStageHalfCompleted()) {
                        setDescriptionText(R.string.security_settings_fingerprint_enroll_repeat_message);
                    } else {
                        setDescriptionText(R.string.security_settings_udfps_enroll_edge_message);
                    }
                }
                break;

            case STAGE_UNKNOWN:
            default:
                getLayout().setHeaderText(R.string.security_settings_fingerprint_enroll_udfps_title);
                setDescriptionText(R.string.security_settings_udfps_enroll_start_message);
                final CharSequence description = getString(R.string.security_settings_udfps_enroll_a11y);
                getLayout().getHeaderTextView().setContentDescription(description);
                setTitle(description);
                break;
        }
    }

    @EnrollStage
    private int getCurrentStage() {
        if (mSidecar == null || mSidecar.getEnrollmentSteps() == -1) {
            return STAGE_UNKNOWN;
        }
        final int progressSteps = mSidecar.getEnrollmentSteps() - mSidecar.getEnrollmentRemaining();
        if (progressSteps < getStageThresholdSteps(0)) {
            return STAGE_CENTER;
        } else if (progressSteps < getStageThresholdSteps(1)) {
            return STAGE_GUIDED;
        } else if (progressSteps < getStageThresholdSteps(2)) {
            return STAGE_FINGERTIP;
        } else if (progressSteps < getStageThresholdSteps(3)) {
            return STAGE_LEFT_EDGE;
        } else {
            return STAGE_RIGHT_EDGE;
        }
    }

    private boolean isStageHalfCompleted() {
        if (mSidecar == null || mSidecar.getEnrollmentSteps() == -1) {
            return false;
        }
        final int progressSteps = mSidecar.getEnrollmentSteps() - mSidecar.getEnrollmentRemaining();
        int prevThresholdSteps = 0;
        for (int i = 0; i < mFingerprintManager.getEnrollStageCount(); i++) {
            final int thresholdSteps = getStageThresholdSteps(i);
            if (progressSteps >= prevThresholdSteps && progressSteps < thresholdSteps) {
                final int adjustedProgress = progressSteps - prevThresholdSteps;
                final int adjustedThreshold = thresholdSteps - prevThresholdSteps;
                return adjustedProgress >= adjustedThreshold / 2;
            }
            prevThresholdSteps = thresholdSteps;
        }
        return true;
    }

    private int getStageThresholdSteps(int index) {
        if (mSidecar == null || mSidecar.getEnrollmentSteps() == -1) {
            Log.w(TAG, "getStageThresholdSteps: Enrollment not started yet");
            return 1;
        }
        return Math.round(mSidecar.getEnrollmentSteps() * mFingerprintManager.getEnrollStageThreshold(index));
    }

    @Override
    public void onEnrollmentHelp(int helpMsgId, CharSequence helpString) {
        if (!TextUtils.isEmpty(helpString)) {
            if (!mCanAssumeUdfps) {
                mErrorText.removeCallbacks(mTouchAgainRunnable);
            }
            showError(helpString);
        }
    }

    @Override
    public void onEnrollmentError(int errMsgId, CharSequence errString) {
    	Log.d(TAG, "--onEnrollmentError--" + errString);
        FingerprintErrorDialog.showErrorDialog(this, errMsgId);
        stopIconAnimation();
        if (!mCanAssumeUdfps) {
            mErrorText.removeCallbacks(mTouchAgainRunnable);
        }
    }

    @Override
    public void onEnrollmentProgressChange(int steps, int remaining) {
    	Log.d(TAG, "----onEnrollmentProgressChange----"+steps + " , remaining = " + remaining);
    	updateProgress(true);
        updateTitleAndDescription();
        clearError();
        animateFlash();
        if (!mCanAssumeUdfps) {
            mErrorText.removeCallbacks(mTouchAgainRunnable);
            mErrorText.postDelayed(mTouchAgainRunnable, HINT_TIMEOUT_DURATION);
        } else {
            if (mIsAccessibilityEnabled) {
                final int percent = (int) (((float)(steps - remaining) / (float) steps) * 100);
                CharSequence cs = getString(R.string.security_settings_udfps_enroll_progress_a11y_message, percent);
                AccessibilityEvent e = AccessibilityEvent.obtain();
                e.setEventType(AccessibilityEvent.TYPE_ANNOUNCEMENT);
                e.setClassName(getClass().getName());
                e.setPackageName(getPackageName());
                e.getText().add(cs);
                mAccessibilityManager.sendAccessibilityEvent(e);
            }
        }
    }

    private void updateProgress(boolean animate) {
        if (mSidecar == null || !mSidecar.isEnrolling()) {
            Log.d(TAG, "Enrollment not started yet");
            return;
        }
        int progress = getProgress(mSidecar.getEnrollmentSteps(), mSidecar.getEnrollmentRemaining());
        Log.d(TAG, "--updateProgress--" + progress);
//        if (animate) {
            animateProgress(progress);
//        } else {
            if (mProgressBar != null) {
                mProgressBar.setProgress(progress);
            }
            if (progress >= PROGRESS_BAR_MAX) {
                mDelayedFinishRunnable.run();
            }
//        }
    }

    private int getProgress(int steps, int remaining) {
        if (steps == -1) {
            return 0;
        }
        int progress = Math.max(0, steps + 1 - remaining);
        return PROGRESS_BAR_MAX * progress / (steps + 1);
    }

    private void showError(CharSequence error) {
        if (mCanAssumeUdfps) {
            setHeaderText(error);
            setDescriptionText("");
        } else {
            mErrorText.setText(error);
            if (mErrorText.getVisibility() == View.INVISIBLE) {
                mErrorText.setVisibility(View.VISIBLE);
                mErrorText.setTranslationY(getResources().getDimensionPixelSize(R.dimen.fingerprint_error_text_appear_distance));
                mErrorText.setAlpha(0f);
                mErrorText.animate().alpha(1f).translationY(0f).setDuration(200).setInterpolator(mLinearOutSlowInInterpolator).start();
            } else {
                mErrorText.animate().cancel();
                mErrorText.setAlpha(1f);
                mErrorText.setTranslationY(0f);
            }
        }

        if (isResumed() && mIsAccessibilityEnabled && !mCanAssumeUdfps) {
            mVibrator.vibrate(Process.myUid(), getApplicationContext().getOpPackageName(),VIBRATE_EFFECT_ERROR, getClass().getSimpleName() + "::showError",FINGERPRINT_ENROLLING_SONFICATION_ATTRIBUTES);
        }
    }

    private void clearError() {
        if (!mCanAssumeUdfps && mErrorText.getVisibility() == View.VISIBLE) {
            mErrorText.animate().alpha(0f).translationY(getResources().getDimensionPixelSize(R.dimen.fingerprint_error_text_disappear_distance))
                    .setDuration(100).setInterpolator(mFastOutLinearInInterpolator).withEndAction(() -> mErrorText.setVisibility(View.INVISIBLE)).start();
        }
    }

    private void listenOrientationEvent() {
        mOrientationEventListener = new OrientationEventListener(this) {
            @Override
            public void onOrientationChanged(int orientation) {
                final int currentRotation = getDisplay().getRotation();
                if ((mPreviousRotation == Surface.ROTATION_90 && currentRotation == Surface.ROTATION_270) || (mPreviousRotation == Surface.ROTATION_270 && currentRotation == Surface.ROTATION_90)) {
                    mPreviousRotation = currentRotation;
                    recreate();
                }
            }
        };
        mOrientationEventListener.enable();
        mPreviousRotation = getDisplay().getRotation();
    }

    private void stopListenOrientationEvent() {
        if (mOrientationEventListener != null) {
            mOrientationEventListener.disable();
        }
        mOrientationEventListener = null;
    }

    private final Animator.AnimatorListener mProgressAnimationListener = new Animator.AnimatorListener() {
                @Override
                public void onAnimationStart(Animator animation) { }
                @Override
                public void onAnimationRepeat(Animator animation) { }
                @Override
                public void onAnimationEnd(Animator animation) {
                    if (mProgressBar.getProgress() >= PROGRESS_BAR_MAX) {
                        mProgressBar.postDelayed(mDelayedFinishRunnable, getFinishDelay());
                    }
                }
                @Override
                public void onAnimationCancel(Animator animation) { }
            };

    private long getFinishDelay() {
        return mCanAssumeUdfps ? 400L : 250L;
    }

    private final Runnable mDelayedFinishRunnable = new Runnable() {
        @Override
        public void run() {
            launchFinish(mToken);
        }
    };
    
//    private final Runnable mDelayedSendCmd = new Runnable() {
//        @Override
//        public void run() {
//        	 Log.d(TAG, "--mDelayedSendCmd--" );
//        	 mGoodixFingerprintManager.testCmd(ShenzhenConstants.CMD_TEST_SZ_FINGER_DOWN);
//        }
//    };

    private final Animatable2.AnimationCallback mIconAnimationCallback = new Animatable2.AnimationCallback() {
        @Override
        public void onAnimationEnd(Drawable d) {
            if (mAnimationCancelled) {
                return;
            }

            mProgressBar.post(new Runnable() {
                @Override
                public void run() {
                    startIconAnimation();
                }
            });
        }
    };

    private final Runnable mTouchAgainRunnable = new Runnable() {
        @Override
        public void run() {
            showError(getString(R.string.security_settings_fingerprint_enroll_lift_touch_again));
        }
    };

    @Override
    public int getMetricsCategory() {
        return SettingsEnums.FINGERPRINT_ENROLLING;
    }

    private void updateOrientation(int orientation) {
        switch(orientation) {
            case Configuration.ORIENTATION_LANDSCAPE: {
                mIllustrationLottie = null;
                break;
            }
            case Configuration.ORIENTATION_PORTRAIT: {
                if (mShouldShowLottie) {
                    mIllustrationLottie = findViewById(R.id.illustration_lottie);
                }
                break;
            }
        }
    }

    @Override
    public void onConfigurationChanged(@NonNull Configuration newConfig) {
        switch(newConfig.orientation) {
            case Configuration.ORIENTATION_LANDSCAPE: {
                updateOrientation(Configuration.ORIENTATION_LANDSCAPE);
                break;
            }
            case Configuration.ORIENTATION_PORTRAIT: {
                updateOrientation(Configuration.ORIENTATION_PORTRAIT);
                break;
            }
        }
    }
}

基本上不用怎么修改。

3，最重要的是在System UI 里，下面详细的介绍。

首先在SystemUI里加入汇顶的库 GoodixFingerprintManager ，在bp文件里添加

vendor/mediatek/proprietary/packages/apps/SystemUI/Android.bp

// add yk
android_library_import {
    name: "mtkgf_manager_lib",
    aars: ["libs/gf_manager_lib.aar"],
}
// end

AndroidManifest.xml 里要修改下，不然编译会报错，replace标签里添加label ， vendor/mediatek/proprietary/packages/apps/SystemUI/AndroidManifest.xml

 tools:replace="android:label,android:appComponentFactory"

编译成功后，在 vendor/mediatek/proprietary/packages/apps/SystemUI/src/com/android/systemui/biometrics/AuthController.java 初始化 GoodixFingerprintManager

 mGoodixFingerprintManager = GoodixFingerprintManager.getFingerprintManager(mContext); // add

mGoodixFingerprint.showSensorViewWindow(true); 显示汇顶的指纹解锁的窗口

mGoodixFingerprint.setHBMMode(true); 显示高亮

汇顶的人员建议不要调用他们的来实现，为此，我就反编译他们的做了一个，反编译的代码后面贴出。

vendor/mediatek/proprietary/packages/apps/SystemUI/src/com/android/systemui/biometrics/UdfpsController.java 这个是核心类，

这个类里主要作用是工厂方法模式实现显示录指纹，解锁等不同的UI ，

    fun inflateUdfpsAnimation(view: UdfpsView, controller: UdfpsController): UdfpsAnimationViewController<*>? {
        return when (requestReason) {
            REASON_ENROLL_FIND_SENSOR,
            REASON_ENROLL_ENROLLING -> {
            	Log.i("zgyFp", " REASON_ENROLL_ENROLLING  ")
            	null
              /*  UdfpsEnrollViewController(view.addUdfpsView(R.layout.udfps_enroll_view) {},
                    enrollHelper ?: throw IllegalStateException("no enrollment helper"),
                    statusBarStateController,
                    panelExpansionStateManager,
                    dialogManager,
                    dumpManager,
                    overlayParams.scaleFactor
                ) */
            }
            BiometricOverlayConstants.REASON_AUTH_KEYGUARD -> {
            	Log.i("zgyFp", " REASON_AUTH_KEYGUARD  ")
                UdfpsKeyguardViewController(
                    view.addUdfpsView(R.layout.udfps_keyguard_view),statusBarStateController, panelExpansionStateManager,
                    statusBarKeyguardViewManager, keyguardUpdateMonitor, dumpManager, transitionController,
                    configurationController, systemClock, keyguardStateController, unlockedScreenOffAnimationController,
                    dialogManager, controller, activityLaunchAnimator)
            }
            
            BiometricOverlayConstants.REASON_AUTH_BP -> {
                UdfpsBpViewController(view.addUdfpsView(R.layout.udfps_bp_view), statusBarStateController, panelExpansionStateManager, dialogManager, dumpManager)
            }
            
            BiometricOverlayConstants.REASON_AUTH_OTHER,
            BiometricOverlayConstants.REASON_AUTH_SETTINGS -> {
                UdfpsFpmOtherViewController(view.addUdfpsView(R.layout.udfps_fpm_other_view), statusBarStateController, panelExpansionStateManager, dialogManager, dumpManager)
            }
            else -> {
                Log.e(TAG, "Animation for reason $requestReason not supported yet")
                null
            }
        }
    }

完成后的解锁视频

完成后的视频