Android S Location Mode 默认开关状态及读取逻辑

Android 12 source code 地址：

https://aosp.opersys.com/xref/android-12.0.0_r2/

Android 12 13 定位开关的默认状态存储位置一致

/frameworks/base/packages/SettingsProvider/res/values/defaults.xml

 <!-- 0 == off, 3 == on -->
    <integer name="def_location_mode">3</integer>

​读取地址：
http://aosp.opersys.com/xref/android-12.0.0_r2/xref/frameworks/base/packages/SettingsProvider/src/com/android/providers/settings/SettingsProvider.java

​

     final SettingsState secureSettings = getSecureSettingsLocked(userId);

                    final Setting locationMode = secureSettings.getSettingLocked(
                            Secure.LOCATION_MODE);

                    if (locationMode.isNull()) {
                        final Setting locationProvidersAllowed = secureSettings.getSettingLocked(
                                Secure.LOCATION_PROVIDERS_ALLOWED);

                        final int defLocationMode;
                        if (locationProvidersAllowed.isNull()) {
                            defLocationMode = getContext().getResources().getInteger(
                                    R.integer.def_location_mode);
                        } else {
                            defLocationMode =
                                    !TextUtils.isEmpty(locationProvidersAllowed.getValue())
                                            ? Secure.LOCATION_MODE_ON
                                            : Secure.LOCATION_MODE_OFF;
                        }
                        secureSettings.insertSettingOverrideableByRestoreLocked(
                                Secure.LOCATION_MODE, Integer.toString(defLocationMode),
                                null, true, SettingsState.SYSTEM_PACKAGE_NAME);
                    }