frameworks/base/packages/SettingsProvider/res/values/defaults.xml
<bool name="def_bluetooth_on">false</bool>
將 def_bluetooth_on 的值設為false（系統默認開啟值）
adb動態設置
關閉：adb shell settings put global bluetooth_on 0
打開：adb shell settings put global bluetooth_on 1
查詢：adb shell settings get global bluetooth_on
打開藍牙
am start -a android.bluetooth.adapter.action.REQUEST_ENABLE
查看藍牙狀態
service list | grep bluetooth
dumpsys package com.android.bluetooth | grep “version”
dumpsys bluetooth_manager
logcat -s BluetoothManager
