Android 读取系统属性详解

一，背景介绍

        Android 系统属性主要有两种：SettingsProvider 和 SystemProperties 。

二，SettingsProvider详解

2.1 关于Android"设置"里的一些属性可以直接通过settings命令直接查看或者设置adb shell 下 settings指令可以分别查看系统、全局、安全设置属性。

2.1.1 settings查看方法

adb shell settings list systemadb shell settings list globaladb shell settings list secure

2.1.2 属性的存储位置

/data/system/users/0/下的对应xml文件：
settings_global.xml
settings_secure.xml
settings_system.xml

2.1.3 settings方法

# get方法adb shell settings get global bluetooth_on# set方法adb shell settings put global bluetooth_on 1

C:\Users\Administrator>adb shellabc‏‎‎‏‎:/ $ suabc‏‎‎‏‎:/ # settings list global | grep devicedevice_name=‎‏‎‎‎‎‎‏‎‏‏‏‎‎‎‎‎‏‎‎‏‎‎‎‏‎‏‏‏‏‏‏‏‏‏‏‏‎‏‎‏‏‎‏‏‎‎‏‎‏‎‏‎‏‎‎‎‏‎‎‏‎‎‎‏‎‎‏‏‏‎‏‎‏‎‎‏‎‏‎‏‎‏‏‏‏‏‏‎‏‏‏‏‎‏‎Android abc‏‎‎‏‎device_provisioned=1abc‏‎‎‏‎:/ #

2.1.4 源码相关

状态值进行存储：frameworks/base/packages/SettingsProvider/class="lazy" data-src/com/android/providers/settings/DatabaseHelper.java
设置的成员定义：frameworks/base/core/java/android/provider/Settings.java
部分的默认值来源于：frameworks/base/packages/SettingsProvider/res/values/defaults.xml
settings代码位置在：frameworks/base/cmds/settings/settings

2.1.5 settings实例

#获取自动锁屏时间adb shell settings list system | grep timeoutscreen_off_timeout=300000#设置自动锁屏时间adb shell settings put system screen_off_timeout 2147483647#全屏沉浸模式（包括状态栏和虚拟按键）：adb shell settings put global policy_control immersive.full=*#沉浸状态栏：adb shell settings put global policy_control immersive.status=*#沉浸虚拟按键（隐藏后底部上划可以呼出）：adb shell settings put global policy_control immersive.navigation=*#恢复正常模式（如果隐藏了状态栏或者虚拟按键但是又不想用了）：adb shell settings put global policy_control null

三，系统属性读取

3.1 在adb中进行属性读取和设置

3.1.1 Settings Provider设置和读取

//查看screen_off_timeout的值，可以使用下面的命令$ adb shell settings get system screen_off_timeout$ 60000 

这里属性值是严格区分大小写的（全部都是小写），不存在的值或者写错就获取到null。

//修改休眠时间$ adb shell settings put system screen_off_timeout 120000 //120秒，2分钟

3.1.2、SystemProperties属性读取和设置

C:\Users\Administrator>adb shell getprop[apexd.status]: [ready][bootreceiver.enable]: [1][bpf.progs_loaded]: [1][build.version.extensions.r]: [1][build.version.extensions.s]: [1][cache_key.bluetooth.get_adapter_connection_state]: [7470926241194665063][cache_key.bluetooth.get_bond_state]: [7470926241194665059][cache_key.bluetooth.get_profile_connection_state]: [7470926241194665064][cache_key.bluetooth.get_state]: [7470926241194665065][cache_key.bluetooth.is_offloaded_filtering_supported]: [7470926241194665060][cache_key.display_info]: [6176213068958815969][cache_key.get_packages_for_uid]: [6176213068958816006][cache_key.has_system_feature]: [6176213068958815942][cache_key.is_compat_change_enabled]: [6176213068958816008][cache_key.is_interactive]: [6176213068958815922][cache_key.is_power_save_mode]: [6176213068958815957][cache_key.is_user_unlocked]: [6176213068958815983][cache_key.location_enabled]: [6176213068958815956][cache_key.package_info]: [6176213068958816009][cache_key.system_server.accounts_data]: [6176213068958815987][dalvik.vm.appimageformat]: [lz4][dalvik.vm.boot-dex2oat-threads]: [8][dalvik.vm.dex2oat-Xms]: [64m][dalvik.vm.dex2oat-Xmx]: [512m][dalvik.vm.dex2oat-max-image-block-size]: [524288][dalvik.vm.dex2oat-minidebuginfo]: [true][dalvik.vm.dex2oat-resolve-startup-strings]: [true][dalvik.vm.dex2oat-threads]: [8][dalvik.vm.dex2oat-updatable-bcp-packages-file]: [/system/etc/updatable-bcp-packages.txt][dalvik.vm.dexopt.secondary]: [true][dalvik.vm.dexopt.thermal-cutoff]: [2][dalvik.vm.heapgrowthlimit]: [192m][dalvik.vm.heapmaxfree]: [8m][dalvik.vm.heapminfree]: [512k][dalvik.vm.heapsize]: [512m][dalvik.vm.heapstartsize]: [16m][dalvik.vm.heaptargetutilization]: [0.75][dalvik.vm.image-dex2oat-Xms]: [64m][dalvik.vm.image-dex2oat-Xmx]: [64m][dalvik.vm.isa.arm.features]: [default][dalvik.vm.isa.arm.variant]: [cortex-a76][dalvik.vm.isa.arm64.features]: [default][dalvik.vm.isa.arm64.variant]: [cortex-a76][dalvik.vm.lockprof.threshold]: [500][dalvik.vm.madvise.artfile.size]: [4294967295][dalvik.vm.madvise.odexfile.size]: [104857600][dalvik.vm.madvise.vdexfile.size]: [104857600][dalvik.vm.minidebuginfo]: [true][dalvik.vm.usejit]: [true][dalvik.vm.usejitprofiles]: [true][debug.atrace.tags.enableflags]: [0][debug.force_rtl]: [false][debug.hwui.use_partial_updates]: [false][debug.nfc.fw_download]: [false][debug.nfc.se]: [false][debug.tracing.screen_brightness]: [0.5][dev.bootcomplete]: [1][dev.mnt.blk.odm]: [dm-4][dev.mnt.blk.odm_dlkm]: [dm-5][dev.mnt.blk.product]: [dm-6][dev.mnt.blk.root]: [dm-0][dev.mnt.blk.system_ext]: [dm-1][dev.mnt.blk.vendor]: [dm-2][dev.mnt.blk.vendor_dlkm]: [dm-3][drm.service.enabled]: [true][dumpstate.completed]: [1][dumpstate.last_id]: [2][external_storage.casefold.enabled]: [1][external_storage.projid.enabled]: [1][external_storage.sdcardfs.enabled]: [0][graphics.gpu.profiler.support]: [true][gsid.image_installed]: [0][gsm.ignore-nitz]: [yes][hwservicemanager.ready]: [true][init.svc.adbd]: [running][init.svc.akmd]: [stopped][init.svc.android-hardware-media-c2-hal-1-1]: [running][init.svc.apexd]: [stopped][init.svc.apexd-bootstrap]: [stopped][init.svc.apexd-snapshotde]: [stopped][init.svc.audioserver]: [running][init.svc.bootanim]: [stopped][init.svc.boringssl_self_test32]: [stopped][init.svc.boringssl_self_test32_vendor]: [stopped][init.svc.boringssl_self_test64]: [stopped][init.svc.boringssl_self_test64_vendor]: [stopped][init.svc.boringssl_self_test_apex32]: [stopped][init.svc.boringssl_self_test_apex64]: [stopped][init.svc.bpfloader]: [stopped][init.svc.cameraserver]: [running][init.svc.console]: [running][init.svc.credstore]: [running][init.svc.derive_classpath]: [stopped][init.svc.derive_sdk]: [stopped][init.svc.drm]: [running][init.svc.dump_kernel_panic]: [stopped][init.svc.eGTouchD]: [running][init.svc.gatekeeperd]: [running][init.svc.gpu]: [running][init.svc.hdcp2_hdmi]: [stopped][init.svc.hdmi_server]: [running][init.svc.health-hal-2-1]: [running][init.svc.heapprofd]: [stopped][init.svc.hidl_memory]: [running][init.svc.hwservicemanager]: [running][init.svc.idmap2d]: [stopped][init.svc.incidentd]: [running][init.svc.installd]: [running][init.svc.keystore2]: [running][init.svc.lcdparamservice]: [running][init.svc.lmkd]: [running][init.svc.logd]: [running][init.svc.logd-auditctl]: [stopped][init.svc.logd-reinit]: [stopped][init.svc.media]: [running][init.svc.media.swcodec]: [running][init.svc.media.tuner]: [running][init.svc.mediadrm]: [running][init.svc.mediaextractor]: [running][init.svc.mediametrics]: [running][init.svc.netd]: [running][init.svc.network_coexist]: [stopped][init.svc.odsign]: [stopped][init.svc.oemscript]: [stopped][init.svc.ril-daemon]: [running][init.svc.rknn_server]: [running][init.svc.rockchip.drmservice]: [stopped][init.svc.rockchip_udc_detector]: [stopped][init.svc.servicemanager]: [running][init.svc.simple_bugreportd]: [stopped][init.svc.statsd]: [running][init.svc.storaged]: [running][init.svc.surfaceflinger]: [running][init.svc.system_suspend]: [running][init.svc.tee-supplicant]: [running][init.svc.tombstoned]: [running][init.svc.traced]: [running][init.svc.traced_perf]: [stopped][init.svc.traced_probes]: [running][init.svc.ueventd]: [running][init.svc.usbd]: [stopped][init.svc.vendor.audio-hal]: [running][init.svc.vendor.bluetooth-1-0]: [running][init.svc.vendor.camera-provider-2-4]: [running][init.svc.vendor.camera-provider-2-4-ext]: [running][init.svc.vendor.cas-hal-1-2]: [running][init.svc.vendor.drm-clearkey-hal-1-4]: [running][init.svc.vendor.drm-widevine-hal-1-4]: [running][init.svc.vendor.gatekeeper-1-0]: [running][init.svc.vendor.gnss-2-0]: [running][init.svc.vendor.gralloc-4-0]: [running][init.svc.vendor.hwcomposer-2-1]: [running][init.svc.vendor.insmod_sh]: [stopped][init.svc.vendor.keymint-default]: [running][init.svc.vendor.light-rockchip]: [running][init.svc.vendor.media.omx]: [running][init.svc.vendor.move_data_sh]: [stopped][init.svc.vendor.outputmanager-1-0]: [running][init.svc.vendor.power-aidl-rockchip]: [running][init.svc.vendor.radio-1-2]: [running][init.svc.vendor.radio-config-hal-1-0]: [running][init.svc.vendor.rknn-1-0]: [running][init.svc.vendor.rockit-hal-1-0]: [running][init.svc.vendor.sensors-hal-1-0]: [running][init.svc.vendor.tv-input-1-0]: [running][init.svc.vendor.weaver-hal-1-0]: [running][init.svc.vendor.wifi_hal_legacy]: [running][init.svc.vndservicemanager]: [running][init.svc.vold]: [running][init.svc.wificond]: [running][init.svc.zygote]: [running][init.svc.zygote_secondary]: [running][init.svc_debug_pid.adbd]: [720][init.svc_debug_pid.akmd]: [][init.svc_debug_pid.android-hardware-media-c2-hal-1-1]: [380][init.svc_debug_pid.apexd]: [][init.svc_debug_pid.apexd-bootstrap]: [][init.svc_debug_pid.apexd-snapshotde]: [][init.svc_debug_pid.audioserver]: [393][init.svc_debug_pid.bootanim]: [][init.svc_debug_pid.boringssl_self_test32]: [][init.svc_debug_pid.boringssl_self_test32_vendor]: [][init.svc_debug_pid.boringssl_self_test64]: [][init.svc_debug_pid.boringssl_self_test64_vendor]: [][init.svc_debug_pid.boringssl_self_test_apex32]: [][init.svc_debug_pid.boringssl_self_test_apex64]: [][init.svc_debug_pid.bpfloader]: [][init.svc_debug_pid.cameraserver]: [439][init.svc_debug_pid.console]: [287][init.svc_debug_pid.credstore]: [394][init.svc_debug_pid.derive_classpath]: [][init.svc_debug_pid.derive_sdk]: [][init.svc_debug_pid.drm]: [429][init.svc_debug_pid.dump_kernel_panic]: [][init.svc_debug_pid.eGTouchD]: [433][init.svc_debug_pid.gatekeeperd]: [514][init.svc_debug_pid.gpu]: [395][init.svc_debug_pid.hdcp2_hdmi]: [][init.svc_debug_pid.hdmi_server]: [388][init.svc_debug_pid.health-hal-2-1]: [379][init.svc_debug_pid.heapprofd]: [][init.svc_debug_pid.hidl_memory]: [367][init.svc_debug_pid.hwservicemanager]: [285][init.svc_debug_pid.idmap2d]: [][init.svc_debug_pid.incidentd]: [441][init.svc_debug_pid.installd]: [442][init.svc_debug_pid.keystore2]: [322][init.svc_debug_pid.lcdparamservice]: [438][init.svc_debug_pid.lmkd]: [283][init.svc_debug_pid.logd]: [282][init.svc_debug_pid.logd-auditctl]: [][init.svc_debug_pid.logd-reinit]: [][init.svc_debug_pid.media]: [445][init.svc_debug_pid.media.swcodec]: [457][init.svc_debug_pid.media.tuner]: [446][init.svc_debug_pid.mediaextractor]: [443][init.svc_debug_pid.mediametrics]: [444][init.svc_debug_pid.netd]: [361][init.svc_debug_pid.network_coexist]: [][init.svc_debug_pid.odsign]: [][init.svc_debug_pid.oemscript]: [][init.svc_debug_pid.ril-daemon]: [452][init.svc_debug_pid.rknn_server]: [289][init.svc_debug_pid.rockchip.drmservice]: [][init.svc_debug_pid.rockchip_udc_detector]: [][init.svc_debug_pid.servicemanager]: [284][init.svc_debug_pid.simple_bugreportd]: [][init.svc_debug_pid.statsd]: [360][init.svc_debug_pid.storaged]: [447][init.svc_debug_pid.surfaceflinger]: [396][init.svc_debug_pid.system_suspend]: [321][init.svc_debug_pid.tee-supplicant]: [320][init.svc_debug_pid.tombstoned]: [340][init.svc_debug_pid.traced]: [432][init.svc_debug_pid.traced_perf]: [][init.svc_debug_pid.traced_probes]: [430][init.svc_debug_pid.ueventd]: [262][init.svc_debug_pid.usbd]: [][init.svc_debug_pid.vendor.audio-hal]: [368][init.svc_debug_pid.vendor.bluetooth-1-0]: [369][init.svc_debug_pid.vendor.camera-provider-2-4]: [371][init.svc_debug_pid.vendor.camera-provider-2-4-ext]: [370][init.svc_debug_pid.vendor.cas-hal-1-2]: [372][init.svc_debug_pid.vendor.drm-clearkey-hal-1-4]: [373][init.svc_debug_pid.vendor.drm-widevine-hal-1-4]: [374][init.svc_debug_pid.vendor.gatekeeper-1-0]: [375][init.svc_debug_pid.vendor.gnss-2-0]: [376][init.svc_debug_pid.vendor.gralloc-4-0]: [377][init.svc_debug_pid.vendor.hwcomposer-2-1]: [378][init.svc_debug_pid.vendor.insmod_sh]: [][init.svc_debug_pid.vendor.keymint-default]: [288][init.svc_debug_pid.vendor.light-rockchip]: [386][init.svc_debug_pid.vendor.media.omx]: [449][init.svc_debug_pid.vendor.move_data_sh]: [][init.svc_debug_pid.vendor.outputmanager-1-0]: [390][init.svc_debug_pid.vendor.power-aidl-rockchip]: [387][init.svc_debug_pid.vendor.radio-1-2]: [382][init.svc_debug_pid.vendor.radio-config-hal-1-0]: [381][init.svc_debug_pid.vendor.rknn-1-0]: [389][init.svc_debug_pid.vendor.rockit-hal-1-0]: [391][init.svc_debug_pid.vendor.sensors-hal-1-0]: [383][init.svc_debug_pid.vendor.tv-input-1-0]: [392][init.svc_debug_pid.vendor.weaver-hal-1-0]: [384][init.svc_debug_pid.vendor.wifi_hal_legacy]: [385][init.svc_debug_pid.vndservicemanager]: [286][init.svc_debug_pid.vold]: [291][init.svc_debug_pid.wificond]: [448][init.svc_debug_pid.zygote]: [362][init.svc_debug_pid.zygote_secondary]: [363][keyguard.no_require_sim]: [true][keystore.boot_level]: [1000000000][keystore.crash_count]: [0][khungtask.enable]: [false][llk.enable]: [false][log.tag.APM_AudioPolicyManager]: [D][log.tag.stats_log]: [I][logd.logpersistd.enable]: [true][media.sink.audio]: [LPCM,][net.bt.name]: [Android][net.qtaguid_enabled]: [1][net.tcp_def_init_rwnd]: [60][odsign.key.done]: [1][odsign.verification.done]: [1][odsign.verification.success]: [0][persist.bluetooth.btsnoopdefaultmode]: [][persist.bluetooth.btsnooplogmode]: [disable][persist.bluetooth.btsnooppath]: [/data/misc/bluedroid/btsnoop_hci.cfa][persist.bluetooth.btsnoopsize]: [0xffff][persist.bluetooth.showdeviceswithoutnames]: [false][persist.bt.power.down]: [true][persist.dbg.keep_debugfs_mounted]: [1][persist.debug.dalvik.vm.core_platform_api_policy]: [just-warn][persist.device_config.attempted_boot_count]: [0][persist.enable_task_snapshots]: [false][persist.net.data.score]: [100][persist.net.eth0.score]: [400][persist.net.eth1.score]: [300][persist.net.network_coexist]: [false][persist.net.network_priority]: [0][persist.net.wifi.score]: [200][persist.netd.stable_secret]: [49fd:3efd:7045:d23:203d:1ad:28e4:fa68][persist.service.bdroid.bdaddr]: [22:22:69:0d:0c:00][persist.sys.audio_gain_level]: [1][persist.sys.boot.reason]: 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[rockchip/rk3588_s/rk3588_s:12/SQ3A.220705.003.A1/tcz07262004:userdebug/release-keys][ro.bootimage.build.id]: [SQ3A.220705.003.A1][ro.bootimage.build.tags]: [release-keys][ro.bootimage.build.type]: [userdebug][ro.bootimage.build.version.incremental]: [eng.tcz.20230726.200723][ro.bootimage.build.version.release]: [12][ro.bootimage.build.version.release_or_codename]: [12][ro.bootimage.build.version.sdk]: [32][ro.bootloader]: [unknown][ro.bootmode]: [normal][ro.boottime.adbd]: [5755736558][ro.boottime.akmd]: [5808724230][ro.boottime.android-hardware-media-c2-hal-1-1]: [5450743611][ro.boottime.apexd]: [5108350826][ro.boottime.apexd-bootstrap]: [3995707964][ro.boottime.apexd-snapshotde]: [5261461842][ro.boottime.audioserver]: [5465636112][ro.boottime.bootanim]: [6715681363][ro.boottime.boringssl_self_test32]: [4096751558][ro.boottime.boringssl_self_test32_vendor]: [4393044088][ro.boottime.boringssl_self_test64]: [4200329693][ro.boottime.boringssl_self_test64_vendor]: [4420574507][ro.boottime.boringssl_self_test_apex32]: [5528551827][ro.boottime.boringssl_self_test_apex64]: [5610308918][ro.boottime.bpfloader]: [5327454348][ro.boottime.cameraserver]: [5792170687][ro.boottime.console]: [4707804953][ro.boottime.credstore]: [5466815904][ro.boottime.derive_classpath]: [5204571961][ro.boottime.derive_sdk]: [5154745081][ro.boottime.drm]: [5758183350][ro.boottime.dump_kernel_panic]: [5292751845][ro.boottime.eGTouchD]: [5786481436][ro.boottime.gatekeeperd]: [6059992172][ro.boottime.gpu]: [5468116154][ro.boottime.hdcp2_hdmi]: [4875124219][ro.boottime.hdmi_server]: [5460099987][ro.boottime.health-hal-2-1]: [5449549235][ro.boottime.hidl_memory]: [5431910109][ro.boottime.hwservicemanager]: [4705865952][ro.boottime.idmap2d]: [5795267312][ro.boottime.incidentd]: [5796649520][ro.boottime.init]: [3322159730][ro.boottime.init.cold_boot_wait]: [0][ro.boottime.init.first_stage]: [394436915][ro.boottime.init.fsck.cache]: [99][ro.boottime.init.fsck.data]: [92][ro.boottime.init.mount.cache]: [2][ro.boottime.init.mount.data]: [66][ro.boottime.init.mount_all.early]: [117][ro.boottime.init.mount_all.late]: [173][ro.boottime.init.selinux]: [171717434][ro.boottime.installd]: [5798364812][ro.boottime.keystore2]: [4878466720][ro.boottime.lcdparamservice]: [5789146978][ro.boottime.lmkd]: [4700267994][ro.boottime.logd]: [4696165993][ro.boottime.logd-auditctl]: [15895179243][ro.boottime.logd-reinit]: [5308621430][ro.boottime.media]: [5802367938][ro.boottime.media.swcodec]: [5833961274][ro.boottime.media.tuner]: [5803619479][ro.boottime.mediaextractor]: [5799662437][ro.boottime.mediametrics]: [5801173854][ro.boottime.netd]: [5400661231][ro.boottime.network_coexist]: [15848173947][ro.boottime.odsign]: [5224108671][ro.boottime.oemscript]: [15852774405][ro.boottime.ril-daemon]: [5811292938][ro.boottime.rknn_server]: [4713129036][ro.boottime.rockchip.drmservice]: [5809932605][ro.boottime.rockchip_udc_detector]: [4718313995][ro.boottime.servicemanager]: [4703571994][ro.boottime.simple_bugreportd]: [24003761516][ro.boottime.statsd]: [5396390355][ro.boottime.storaged]: [5804840980][ro.boottime.surfaceflinger]: [5469737238][ro.boottime.system_suspend]: [4877601053][ro.boottime.tee-supplicant]: [4876150595][ro.boottime.tombstoned]: [5075254240][ro.boottime.traced]: [5784456102][ro.boottime.traced_probes]: [5760556058][ro.boottime.ueventd]: [3993362673][ro.boottime.usbd]: [6061482297][ro.boottime.vendor.audio-hal]: [5433301067][ro.boottime.vendor.bluetooth-1-0]: [5434767567][ro.boottime.vendor.camera-provider-2-4]: [5437404234][ro.boottime.vendor.camera-provider-2-4-ext]: [5435982359][ro.boottime.vendor.cas-hal-1-2]: [5438733943][ro.boottime.vendor.drm-clearkey-hal-1-4]: [5440109443][ro.boottime.vendor.drm-widevine-hal-1-4]: [5441371193][ro.boottime.vendor.gatekeeper-1-0]: [5442681943][ro.boottime.vendor.gnss-2-0]: [5443755860][ro.boottime.vendor.gralloc-4-0]: [5444740527][ro.boottime.vendor.hwcomposer-2-1]: [5445901652][ro.boottime.vendor.insmod_sh]: [4259938783][ro.boottime.vendor.keymint-default]: [4710823120][ro.boottime.vendor.light-rockchip]: [5458051903][ro.boottime.vendor.media.omx]: [5807424563][ro.boottime.vendor.move_data_sh]: [6132944429][ro.boottime.vendor.outputmanager-1-0]: [5462250737][ro.boottime.vendor.power-aidl-rockchip]: [5459065153][ro.boottime.vendor.radio-1-2]: [5453405069][ro.boottime.vendor.radio-config-hal-1-0]: [5452217694][ro.boottime.vendor.rknn-1-0]: [5461229320][ro.boottime.vendor.rockit-hal-1-0]: [5463317945][ro.boottime.vendor.sensors-hal-1-0]: [5454459153][ro.boottime.vendor.tv-input-1-0]: [5464407904][ro.boottime.vendor.weaver-hal-1-0]: [5455780986][ro.boottime.vendor.wifi_hal_legacy]: [5456826028][ro.boottime.vndservicemanager]: [4706799869][ro.boottime.vold]: [4716894162][ro.boottime.wificond]: [5806032730][ro.boottime.zygote]: [5402835022][ro.boottime.zygote_secondary]: [5405436981][ro.bt.bdaddr_path]: [/data/misc/bluetooth/bdaddr][ro.build.characteristics]: [tablet][ro.build.date]: [Thu Jul 27 15:20:05 CST 2023][ro.build.date.utc]: [1690442405][ro.build.description]: [rk3588_s-userdebug 12 SQ3A.220705.003.A1 eng.tcz.20230727.152031 release-keys][ro.build.display.id]: [CX3588_android12_20230727152737][ro.build.fingerprint]: [rockchip/rk3588_s/rk3588_s:12/SQ3A.220705.003.A1/eng.tcz.20230727.152031:userdebug/release-keys][ro.build.flavor]: [rk3588_s-userdebug][ro.build.host]: [jawest-rd2][ro.build.id]: [SQ3A.220705.003.A1][ro.build.product]: [rk3588_s][ro.build.shutdown_timeout]: [6][ro.build.tags]: [release-keys][ro.build.type]: [userdebug][ro.build.user]: [tcz][ro.build.version.all_codenames]: [REL][ro.build.version.base_os]: [][ro.build.version.codename]: [REL][ro.build.version.incremental]: [eng.tcz.20230727.152031][ro.build.version.min_supported_target_sdk]: [23][ro.build.version.preview_sdk]: [0][ro.build.version.preview_sdk_fingerprint]: [REL][ro.build.version.release]: [12][ro.build.version.release_or_codename]: [12][ro.build.version.sdk]: [32][ro.build.version.security_patch]: [2022-07-05][ro.carrier]: [unknown][ro.cold_boot_done]: [true][ro.com.android.dataroaming]: [true][ro.config.alarm_alert]: [Alarm_Classic.ogg][ro.config.enable.remotecontrol]: [false][ro.config.notification_sound]: [OnTheHunt.ogg][ro.config.ringtone]: [Ring_Synth_04.ogg][ro.crypto.state]: [unsupported][ro.dalvik.vm.native.bridge]: [0][ro.debuggable]: [1][ro.default.size]: [100][ro.enable_boot_charger_mode]: [0][ro.factory.hasGPS]: [true][ro.factory.hasUMS]: [false][ro.factory.storage_suppexfat]: [true][ro.factory.storage_suppntfs]: [true][ro.factory.tool]: [0][ro.factory.without_battery]: [false][ro.flash_img.enable]: [false][ro.gsid.image_running]: [0][ro.hardware]: [rk30board][ro.hardware.egl]: [mali][ro.hardware.tv_input]: [rockchip][ro.hwui.use_vulkan]: [][ro.incremental.enable]: [yes][ro.iorapd.enable]: [true][ro.jws.api]: [v1.1][ro.kernel.android.checkjni]: [0][ro.kernel.version]: [5.10][ro.logd.kernel]: [1][ro.logd.size.stats]: [64K][ro.minui.default_rotation]: [ROTATION_NONE][ro.minui.pixel_format]: [RGBX_8888][ro.net.eth_aux]: [eth1][ro.net.eth_primary]: [eth0][ro.odm.build.date]: [Thu Jul 27 15:20:05 CST 2023][ro.odm.build.date.utc]: [1690442405][ro.odm.build.fingerprint]: [rockchip/rk3588_s/rk3588_s:12/SQ3A.220705.003.A1/tcz07271520:userdebug/release-keys][ro.odm.build.id]: [SQ3A.220705.003.A1][ro.odm.build.tags]: [release-keys][ro.odm.build.type]: [userdebug][ro.odm.build.version.incremental]: [eng.tcz.20230727.152031][ro.odm.build.version.release]: [12][ro.odm.build.version.release_or_codename]: [12][ro.odm.build.version.sdk]: [32][ro.odm.product.cpu.abilist]: [arm64-v8a,armeabi-v7a,armeabi][ro.odm.product.cpu.abilist32]: [armeabi-v7a,armeabi][ro.odm.product.cpu.abilist64]: [arm64-v8a][ro.odm_dlkm.build.date]: [Thu Jul 27 15:20:05 CST 2023][ro.odm_dlkm.build.date.utc]: [1690442405][ro.odm_dlkm.build.fingerprint]: [rockchip/rk3588_s/rk3588_s:12/SQ3A.220705.003.A1/tcz07271520:userdebug/release-keys][ro.odm_dlkm.build.id]: [SQ3A.220705.003.A1][ro.odm_dlkm.build.tags]: [release-keys][ro.odm_dlkm.build.type]: [userdebug][ro.odm_dlkm.build.version.incremental]: [eng.tcz.20230727.152031][ro.odm_dlkm.build.version.release]: [12][ro.odm_dlkm.build.version.release_or_codename]: [12][ro.odm_dlkm.build.version.sdk]: [32][ro.oem_unlock_supported]: [1][ro.opengles.version]: [196610][ro.organization_owned]: [false][ro.persistent_properties.ready]: [true][ro.postinstall.fstab.prefix]: [/system][ro.product.board]: [rk30sdk][ro.product.bootimage.brand]: [rockchip][ro.product.bootimage.device]: [rk3588_s][ro.product.bootimage.manufacturer]: [rockchip][ro.product.bootimage.model]: [CX3588][ro.product.bootimage.name]: [rk3588_s][ro.product.brand]: [rockchip][ro.product.build.date]: [Thu Jul 27 15:20:05 CST 2023][ro.product.build.date.utc]: [1690442405][ro.product.build.fingerprint]: [rockchip/rk3588_s/rk3588_s:12/SQ3A.220705.003.A1/tcz07271520:userdebug/release-keys][ro.product.build.id]: [SQ3A.220705.003.A1][ro.product.build.tags]: [release-keys][ro.product.build.type]: [userdebug][ro.product.build.version.incremental]: [eng.tcz.20230727.152031][ro.product.build.version.release]: [12][ro.product.build.version.release_or_codename]: [12][ro.product.build.version.sdk]: [32][ro.product.cpu.abi]: [arm64-v8a][ro.product.cpu.abilist]: [arm64-v8a,armeabi-v7a,armeabi][ro.product.cpu.abilist32]: [armeabi-v7a,armeabi][ro.product.cpu.abilist64]: [arm64-v8a][ro.product.debugfs_restrictions.enabled]: [true][ro.product.device]: [rk3588_s][ro.product.firmware]: [v2.1][ro.product.first_api_level]: [31][ro.product.locale]: [zh-CN][ro.product.manufacturer]: [rockchip][ro.product.model]: [CX3588][ro.product.name]: [rk3588_s][ro.product.odm.brand]: [rockchip][ro.product.odm.device]: [rk3588_s][ro.product.odm.manufacturer]: [rockchip][ro.product.odm.model]: [CX3588][ro.product.odm.name]: [rk3588_s][ro.product.odm_dlkm.brand]: [rockchip][ro.product.odm_dlkm.device]: [rk3588_s][ro.product.odm_dlkm.manufacturer]: [rockchip][ro.product.odm_dlkm.model]: [CX3588][ro.product.odm_dlkm.name]: [rk3588_s][ro.product.ota.host]: [192.168.1.1:8888][ro.product.product.brand]: [rockchip][ro.product.product.device]: [rk3588_s][ro.product.product.manufacturer]: [rockchip][ro.product.product.model]: [CX3588][ro.product.product.name]: [rk3588_s][ro.product.system.brand]: [rockchip][ro.product.system.device]: [rk3588_s][ro.product.system.manufacturer]: [rockchip][ro.product.system.model]: [CX3588][ro.product.system.name]: [rk3588_s][ro.product.system_ext.brand]: [rockchip][ro.product.system_ext.device]: [rk3588_s][ro.product.system_ext.manufacturer]: [rockchip][ro.product.system_ext.model]: [CX3588][ro.product.system_ext.name]: [rk3588_s][ro.product.usbfactory]: [rockchip_usb][ro.product.vendor.brand]: [rockchip][ro.product.vendor.device]: [rk3588_s][ro.product.vendor.manufacturer]: [rockchip][ro.product.vendor.model]: [CX3588][ro.product.vendor.name]: [rk3588_s][ro.product.vendor_dlkm.brand]: [rockchip][ro.product.vendor_dlkm.device]: [rk3588_s][ro.product.vendor_dlkm.manufacturer]: [rockchip][ro.product.vendor_dlkm.model]: [CX3588][ro.product.vendor_dlkm.name]: [rk3588_s][ro.product.vndk.version]: [32][ro.property_service.version]: [2][ro.revision]: [0][ro.ril.ecclist]: [112,911][ro.rk.bt_enable]: [true][ro.rk.ethernet_settings]: [true][ro.rk.flash_enable]: [true][ro.rk.hdmi_enable]: [true][ro.rk.screenoff_time]: [60000][ro.rk.screenshot_enable]: [true][ro.rksdk.version]: [ANDROID12_RKR14][ro.runtime.firstboot]: [1690442965150][ro.safemode.disabled]: [true][ro.secure]: [1][ro.serialno]: [93c3e5cef612a187][ro.sf.fakerotation]: [false][ro.sf.lcd_density]: [160][ro.soc.manufacturer]: [Rockchip][ro.soc.model]: [RK3588][ro.sys.host_unhide_charge_notify]: [true][ro.system.build.date]: [Thu Jul 27 15:20:05 CST 2023][ro.system.build.date.utc]: [1690442405][ro.system.build.fingerprint]: [rockchip/rk3588_s/rk3588_s:12/SQ3A.220705.003.A1/tcz07271520:userdebug/release-keys][ro.system.build.id]: [SQ3A.220705.003.A1][ro.system.build.tags]: [release-keys][ro.system.build.type]: [userdebug][ro.system.build.version.incremental]: [eng.tcz.20230727.152031][ro.system.build.version.release]: [12][ro.system.build.version.release_or_codename]: [12][ro.system.build.version.sdk]: [32][ro.system.product.cpu.abilist]: [arm64-v8a,armeabi-v7a,armeabi][ro.system.product.cpu.abilist32]: [armeabi-v7a,armeabi][ro.system.product.cpu.abilist64]: [arm64-v8a][ro.system_ext.build.date]: [Thu Jul 27 15:20:05 CST 2023][ro.system_ext.build.date.utc]: [1690442405][ro.system_ext.build.fingerprint]: [rockchip/rk3588_s/rk3588_s:12/SQ3A.220705.003.A1/tcz07271520:userdebug/release-keys][ro.system_ext.build.id]: [SQ3A.220705.003.A1][ro.system_ext.build.tags]: [release-keys][ro.system_ext.build.type]: [userdebug][ro.system_ext.build.version.incremental]: [eng.tcz.20230727.152031][ro.system_ext.build.version.release]: [12][ro.system_ext.build.version.release_or_codename]: [12][ro.system_ext.build.version.sdk]: [32][ro.target.product]: [tablet][ro.telephony.default_network]: [26][ro.tether.denied]: [false][ro.treble.enabled]: [true][ro.vendor.build.date]: [Thu Jul 27 15:20:05 CST 2023][ro.vendor.build.date.utc]: [1690442405][ro.vendor.build.fingerprint]: [rockchip/rk3588_s/rk3588_s:12/SQ3A.220705.003.A1/tcz07271520:userdebug/release-keys][ro.vendor.build.id]: [SQ3A.220705.003.A1][ro.vendor.build.security_patch]: [2022-07-05][ro.vendor.build.tags]: [release-keys][ro.vendor.build.type]: [userdebug][ro.vendor.build.version.incremental]: [eng.tcz.20230727.152031][ro.vendor.build.version.release]: [12][ro.vendor.build.version.release_or_codename]: [12][ro.vendor.build.version.sdk]: [32][ro.vendor.frameratelock]: [true][ro.vendor.hdmi_settings]: [true][ro.vendor.mpp_buf_type]: [1][ro.vendor.product.cpu.abilist]: [arm64-v8a,armeabi-v7a,armeabi][ro.vendor.product.cpu.abilist32]: [armeabi-v7a,armeabi][ro.vendor.product.cpu.abilist64]: [arm64-v8a][ro.vendor.rk_sdk]: [1][ro.vendor.sdkversion]: [rk3588_ANDROID12.0_MID_V1.0][ro.vendor.udisk.visible]: [true][ro.vendor_dlkm.build.date]: [Thu Jul 27 15:20:05 CST 2023][ro.vendor_dlkm.build.date.utc]: [1690442405][ro.vendor_dlkm.build.fingerprint]: [rockchip/rk3588_s/rk3588_s:12/SQ3A.220705.003.A1/tcz07271520:userdebug/release-keys][ro.vendor_dlkm.build.id]: [SQ3A.220705.003.A1][ro.vendor_dlkm.build.tags]: [release-keys][ro.vendor_dlkm.build.type]: [userdebug][ro.vendor_dlkm.build.version.incremental]: [eng.tcz.20230727.152031][ro.vendor_dlkm.build.version.release]: [12][ro.vendor_dlkm.build.version.release_or_codename]: [12][ro.vendor_dlkm.build.version.sdk]: [32][ro.vndk.version]: [32][ro.wifi.channels]: [][ro.wifi.sleep.power.down]: [true][ro.zygote]: [zygote64_32][security.perf_harden]: [1][selinux.restorecon_recursive]: [/data/misc_ce/0][service.bootanim.exit]: [1][service.bootanim.progress]: [0][service.sf.present_timestamp]: [1][sf.power.control]: [2073600][sys.boot.reason]: [reboot][sys.boot.reason.last]: [reboot][sys.boot_completed]: [1][sys.bootstat.first_boot_completed]: [1][sys.bugreport_reason]: [SYSTEM_BOOT][sys.fuse.transcode_enabled]: [true][sys.gmali.version]: [g18p0-01eac0-2][sys.init.perf_lsm_hooks]: [1][sys.lmk.minfree_levels]: [18432:0,23040:100,27648:200,32256:250,55296:900,80640:950][sys.lmk.reportkills]: [1][sys.mouse.presentation]: [1][sys.rescue_boot_count]: [1][sys.resolution.changed]: [false][sys.retaildemo.enabled]: [0][sys.rkadb.root]: [0][sys.rklog.system_boot]: [1][sys.status.hidebar_enable]: [false][sys.sysctl.extra_free_kbytes]: [9216][sys.system_server.start_count]: [1][sys.system_server.start_elapsed]: [9829][sys.system_server.start_uptime]: [9829][sys.usb.config]: [adb][sys.usb.configfs]: [1][sys.usb.controller]: [fc000000.usb][sys.usb.ffs.ready]: [1][sys.usb.mtp.device_type]: [3][sys.usb.state]: [adb][sys.use_memfd]: [false][sys.user.0.ce_available]: [true][sys.wallpaper.rgb565]: [0][sys.wifitracing.started]: [1][testing.mediascanner.skiplist]: [/mnt/shell/emulated/Android/][tombstoned.max_tombstone_count]: [50][vendor.all.modules.ready]: [1][vendor.bluetooth.enable_timeout_ms]: [11000][vendor.boot_completed]: [1][vendor.cam.hal3.ver]: [v3.1.0][vendor.cam.librkaiq.ver]: [AIQ v5.0x1.2-rc3][vendor.cam.librkaiqAdapter.ver]: [v1.0.3][vendor.cam.librkaiqCalib.ver]: [Calib v1.4.8,magicCode:1170944][vendor.ghwc.version]: [HWC2-1.5.87][vendor.gralloc.disable_afbc]: [0][vendor.gralloc.fb_size]: [786432][vendor.hwc.compose_policy]: [1][vendor.hwc.device.display-0]: [DSI-1:114:connected][vendor.hwc.device.display-1]: [HDMI-A-1:70:connected][vendor.hwc.device.extend]: [HDMI-A,eDP][vendor.hwc.device.primary]: [DSI][vendor.hwc.hdr_state]: [NORMAL][vendor.realtek.bluetooth.chip_name]: [8821CU or 8821CUH][vendor.realtek.bluetooth.en]: [false][vendor.rild.libpath]: [/vendor/lib64/hw/libril_ec2x.so][vendor.rild.libpath.ec2x]: [/vendor/lib64/hw/libril_ec2x.so][vendor.rild.libpath.me3630]: [/vendor/lib64/hw/libril_me3630.so][vendor.rild.libpath.n58]: [/vendor/lib64/hw/libril_n58.so][vendor.rild.libpath.nl668]: [/vendor/lib64/hw/libril_nl668.so][vendor.rild.libpath.rg200]: [/vendor/lib64/hw/libril_rg200.so][vendor.rild.libpath.rx500]: [/vendor/lib64/hw/libril_rx500.so][vendor.rild.libpath.sim7600]: [/vendor/lib64/hw/libril_sim7600.so][vendor.security.tee_supplicant]: [1][vendor.serialno]: [93c3e5cef612a187][vendor.shutdown_anim.orien]: [0][vendor.usb.controller]: [fc000000.usb][vold.has_adoptable]: [0][vold.has_compress]: [0][vold.has_quota]: [1][vold.has_reserved]: [1][wifi.interface]: [wlan0][wifi.supplicant_scan_interval]: [15][wlan.driver.status]: [ok]

C:\Users\Administrator>adb shell getprop ro.serialno93c3e5cef612a187

3.2 Android代码中进行属性读取和设置

3.2.1 Settings Provider设置和读取

Settings Provider是指通过如下方式设置的系统变量数据库：

//读取Settings.System.getInt(Context.getContentResolver(), "xxx", 1);Settings.System.getString(Context.getContentResolver(), "xxx", "1");Settings.System.getLong(Context.getContentResolver(), "xxx", 1);Settings.System.getFloat(Context.getContentResolver(), "xxx", 1);//设置Settings.System.putInt(Context.getContentResolver(), "xxx", 1);Settings.System.putString(Context.getContentResolver(), "xxx", "1");Settings.System.putLong(Context.getContentResolver(), "xxx", 1);Settings.System.putFloat(Context.getContentResolver(), "xxx", 1);xxx表示属性，比如：screen_off_timeout

3.2.2 SystemProperties设置和读取

    public static void set(String key, String value) {        // android.os.SystemProperties        // public static void set(String key, String val)        try {            Class cls = Class.forName("android.os.SystemProperties");            Method method = cls.getMethod("set", String.class, String.class);            method.invoke(null, key, value);        } catch (Exception e) {            e.printStackTrace();        }    }         public static String get(String key, String defValue) {        // android.os.SystemProperties        // public static String get(String key, String def)        try {            Class cls = Class.forName("android.os.SystemProperties");            Method method = cls.getMethod("get", String.class, String.class);            return (String) method.invoke(null, key, defValue);        } catch (Exception e) {            e.printStackTrace();        }        return defValue;    } }

但反射对android11及以上，无法使用，android11接口定义如下，

    @NonNull    @SystemApi    @TestApi    public static String get(@NonNull String key) {        if (TRACK_KEY_ACCESS) onKeyAccess(key);        return native_get(key);    }

可以看出，@SystemApi描述的为系统api，需要系统权限。解决思路授予应用系统权限。
 

来源地址：https://blog.csdn.net/u010664697/article/details/132044705