I have problem with Android O HIDL. The failure log shows it can't find out the service.
However I can see it by adb shell ps -A | grep fingerprint
system 18758 1 17408 3276 pipe_wait 7c79e93e08 R android.hardware.biometrics.fingerprint@2.1-service`
Could anyone give me a hint how to solve the problem? I checked https://source.android.com/devices/architecture/hidl/ but could not get the solution.
Error log:
08-21 06:00:35.864 1890 2264 V FingerprintService: mDeamon was null, reconnect to fingerprint
08-21 06:00:35.864 1890 2264 I system_server: Looking for service android.hardware.biometrics.fingerprint@2.1::IBiometricsFingerprint/default
08-21 06:00:35.864 2240 2240 D wpa_supplicant: nl80211: Set mode ifindex 24 iftype 2 (STATION)
08-21 06:00:35.866 566 566 W /system/bin/hwservicemanager: getTransportFromManifest: Cannot find entry android.hardware.biometrics.fingerprint@2.1::IBiometricsFingerprint in either framework or device manifest, using default transport.
08-21 06:00:35.866 1890 2264 E system_server: service android.hardware.biometrics.fingerprint@2.1::IBiometricsFingerprint declares transport method EMPTY but framework expects hwbinder.
08-21 06:00:35.867 1890 2264 E FingerprintService: Failed to get biometric interface
08-21 06:00:35.867 1890 2264 E FingerprintService: android.os.RemoteException: HwBinder Error: (-2147483648)
08-21 06:00:35.867 1890 2264 E FingerprintService: at android.os.HwBinder.getService(Native Method)
08-21 06:00:35.867 1890 2264 E FingerprintService: at android.hardware.biometrics.fingerprint.V2_1.IBiometricsFingerprint.getService(IBiometricsFingerprint.java:44)
08-21 06:00:35.867 1890 2264 E FingerprintService: at com.android.server.fingerprint.FingerprintService.getFingerprintDaemon(FingerprintService.java:239)
08-21 06:00:35.867 1890 2264 E FingerprintService: at com.android.server.fingerprint.FingerprintService$FingerprintServiceWrapper.isHardwareDetected(FingerprintService.java:1198)
08-21 06:00:35.867 1890 2264 E FingerprintService: at android.hardware.fingerprint.IFingerprintService$Stub.onTransact(IFingerprintService.java:156)
08-21 06:00:35.867 1890 2264 E FingerprintService: at android.os.Binder.execTransact(Binder.java:674)
08-21 06:00:35.867 1890 2264 W FingerprintService: fingerprint HIDL not available
I've succeeded in running my fingerprint HAL on Android 8.1 executing on HiKey 96 board after modified files as below.
Firstly, it's necessary that adding HIDL configures to declare a device as a vendor or you would get VTS failed.
About HIDL configures
device/linaro/hikey/manifest.xml
+<hal format="hidl">
<name>android.hardware.biometrics.fingerprint</name>
<transport>hwbinder</transport>
<version>2.1</version>
<interface>
<name>IBiometricsFingerprint</name>
<instance>default</instance>
</interface>
</hal>
Secondly, finger service will be started after you define it in the file below.
device/linaro/hikey/device-common.mk
+#init finger service and copy
android.hardware.biometrics.fingerprint@2.1-service.rc to
system/vendor/etc/init
+PRODUCT_PACKAGES += \
+android.hardware.biometrics.fingerprint@2.1-service
+# copy permission file of finger service
+PRODUCT_COPY_FILES += \
+frameworks/native/data/etc/android.hardware.fingerprint.xml:system/etc
/permissions/android.hardware.fingerprint.xml
Finally, check finger service has been started and running in Android system by using terminal commands such as "adb shell" and "ps | grep finger".
Any suggestion is welcome.
I found out that I need to add the code to the manifest.xml
(Ref. https://source.android.com/devices/architecture/vintf/objects )
<hal format="hidl">
<name>android.hardware.biometrics.fingerprint</name>
<transport>hwbinder</transport>
<impl level="generic"></impl>
<version>2.1</version>
<interface>
<name>IBiometricsFingerprint</name>
<instance>default</instance>
</interface>
</hal>
来源：https://stackoverflow.com/questions/45813528/android-o-hidl-not-available