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;@Overrideprotected 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;
//            }
//        });
//    }@Overrideprotected BiometricEnrollSidecar getSidecar() {final FingerprintEnrollSidecar sidecar = new FingerprintEnrollSidecar();sidecar.setEnrollReason(FingerprintManager.ENROLL_ENROLL);return sidecar;}@Overrideprotected boolean shouldStartAutomatically() {if (mCanAssumeUdfps) {return mRestoring;}return true;}@Overrideprotected void onStart() {super.onStart();updateProgress(false);updateTitleAndDescription();if (mRestoring) {startIconAnimation();}}//    @Override
//    protected void onResume() {
//        super.onResume();
//        mGoodixFingerprintManager.showSensorViewWindow(true);
//        
//        mGoodixFingerprintManager.setHBMMode(true);
//    }@Overridepublic 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();}}@Overrideprotected 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);
//    }@Overrideprotected 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;}}@EnrollStageprivate 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));}@Overridepublic void onEnrollmentHelp(int helpMsgId, CharSequence helpString) {if (!TextUtils.isEmpty(helpString)) {if (!mCanAssumeUdfps) {mErrorText.removeCallbacks(mTouchAgainRunnable);}showError(helpString);}}@Overridepublic void onEnrollmentError(int errMsgId, CharSequence errString) {Log.d(TAG, "--onEnrollmentError--" + errString);FingerprintErrorDialog.showErrorDialog(this, errMsgId);stopIconAnimation();if (!mCanAssumeUdfps) {mErrorText.removeCallbacks(mTouchAgainRunnable);}}@Overridepublic 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) {@Overridepublic 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() {@Overridepublic void onAnimationStart(Animator animation) { }@Overridepublic void onAnimationRepeat(Animator animation) { }@Overridepublic void onAnimationEnd(Animator animation) {if (mProgressBar.getProgress() >= PROGRESS_BAR_MAX) {mProgressBar.postDelayed(mDelayedFinishRunnable, getFinishDelay());}}@Overridepublic void onAnimationCancel(Animator animation) { }};private long getFinishDelay() {return mCanAssumeUdfps ? 400L : 250L;}private final Runnable mDelayedFinishRunnable = new Runnable() {@Overridepublic 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() {@Overridepublic void onAnimationEnd(Drawable d) {if (mAnimationCancelled) {return;}mProgressBar.post(new Runnable() {@Overridepublic void run() {startIconAnimation();}});}};private final Runnable mTouchAgainRunnable = new Runnable() {@Overridepublic void run() {showError(getString(R.string.security_settings_fingerprint_enroll_lift_touch_again));}};@Overridepublic 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;}}}@Overridepublic 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

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