自 2025 年 3 月 27 日起,我們建議您使用 android-latest-release
而非 aosp-main
建構及貢獻 AOSP。詳情請參閱「Android 開放原始碼計畫變更」。
在行車期間維持熱點
透過集合功能整理內容
你可以依據偏好儲存及分類內容。
本頁面說明如何設定使用者在行車期間維持熱點,類似於 AAOS 中的 Wi-Fi 駕駛體驗。
public class CarSettings {
...
@SystemApi
public static final class Global {
...
/**
* Enables persistent tethering when set to {@code "true"}.
*
* <p>When enabled, tethering is started when the car is started given
* that the hotspot was enabled at shutdown and all tethering sessions
* will remain on even if no devices are connected to it.
*
* <p>When disabled, hotspot will turn off automatically if no devices
* are connected and will no longer persist through drives.
*
* @hide
*/
@SystemApi
public static final String ENABLE_PERSISTENT_TETHERING =
"android.car.ENABLE_PERSISTENT_TETHERING";
}
}
如要持續使用 Tethering,請透過 Settings API 使用 ENABLE_PERSISTENT_TETHERING
,這也可以用於查詢。
權限
CarWifiManager API 的使用受到限制。這項新權限是為了保護存取權而建立。
public boolean canControlPersistApSettings() { ... }
此權限的防護等級如下:
新權限 |
權限 |
防護等級 |
是 |
READ_PERSIST_TETHERING_SETTINGS |
Signature | Privileged |
持久化行為預設為「不支援」。資源疊加層 (config_enablePersistTetheringCapabilities
) 已設為封鎖持續 Tethering 的功能。如要刻意保留 Tethering,請將值設為 true
,以便在使用者偏好設定的選項中啟用這項功能,因為具有 WRITE_SECURE_SETTINGS
權限的其他系統應用程式也可以控制這項設定。
下列 API 會決定是否啟用這項行為。請先呼叫此 API,再變更 ENABLE_PERSISTENT_TETHERING
。
/**
* CarWifiManager provides API to allow for applications to perform Wi-Fi specific
* operations.
*
* @hide
*/
@SystemApi
public final class CarWifiManager extends CarManagerBase {
/**
* Returns {@code true} if the persist tethering settings are able to be
* changed.
*
* @hide
*/
@SystemApi
@RequiresPermission(Car.PERMISSION_READ_PERSIST_TETHERING_SETTINGS)
public boolean canControlPersistApSettings() { ... }
}
這個頁面中的內容和程式碼範例均受《內容授權》中的授權所規範。Java 與 OpenJDK 是 Oracle 和/或其關係企業的商標或註冊商標。
上次更新時間:2025-06-26 (世界標準時間)。
[[["容易理解","easyToUnderstand","thumb-up"],["確實解決了我的問題","solvedMyProblem","thumb-up"],["其他","otherUp","thumb-up"]],[["缺少我需要的資訊","missingTheInformationINeed","thumb-down"],["過於複雜/步驟過多","tooComplicatedTooManySteps","thumb-down"],["過時","outOfDate","thumb-down"],["翻譯問題","translationIssue","thumb-down"],["示例/程式碼問題","samplesCodeIssue","thumb-down"],["其他","otherDown","thumb-down"]],["上次更新時間:2025-06-26 (世界標準時間)。"],[],[],null,["# Maintain hotspots between driving sessions\n\nThis page describes how you can set up users to maintain hotspots between\ndriving sessions, similar to the Wi-Fi driving experience in AAOS. \n\n public class CarSettings {\n ...\n\n @SystemApi\n public static final class Global {\n ...\n\n /**\n * Enables persistent tethering when set to {@code \"true\"}.\n *\n * \u003cp\u003eWhen enabled, tethering is started when the car is started given\n * that the hotspot was enabled at shutdown and all tethering sessions\n * will remain on even if no devices are connected to it.\n *\n * \u003cp\u003eWhen disabled, hotspot will turn off automatically if no devices\n * are connected and will no longer persist through drives.\n *\n * @hide\n */\n @SystemApi\n public static final String ENABLE_PERSISTENT_TETHERING =\n \"android.car.ENABLE_PERSISTENT_TETHERING\";\n }\n }\n\nTo persist tethering, use `ENABLE_PERSISTENT_TETHERING` through the\n[Settings API](https://developer.android.com/reference/android/provider/Settings.Global#public-methods),\nwhich can also be used to query.\n\n### Permissions\n\nUse of the CarWifiManager API is restricted. This new permission is created to\nguard access. \n\n public boolean canControlPersistApSettings() { ... }\n\nProtection levels for this permission are:\n\n| New permission | Permission | Protection level |\n|----------------|-----------------------------------|-------------------------|\n| Yes | `READ_PERSIST_TETHERING_SETTINGS` | Signature \\| Privileged |\n\nThe persist behavior defaults to *not supported.* A resource overlay\n([`config_enablePersistTetheringCapabilities`](https://cs.android.com/android/platform/superproject/+/android-latest-release:packages/services/Car/service/res/values/config.xml;l=644)) is configured to block the\nability to persist tethering. To intentionally persist tethering, set the\nvalue to `true` to enable the feature on top of the user preference\nopt-in since other system apps with the `WRITE_SECURE_SETTINGS` permission can\nalso control this setting.\n\nThe following API determines if the behavior is enabled. Call this API before\nyou change `ENABLE_PERSISTENT_TETHERING`. \n\n /**\n * CarWifiManager provides API to allow for applications to perform Wi-Fi specific\n * operations.\n *\n * @hide\n */\n @SystemApi\n public final class CarWifiManager extends CarManagerBase {\n /**\n * Returns {@code true} if the persist tethering settings are able to be\n * changed.\n *\n * @hide\n */\n @SystemApi\n @RequiresPermission(Car.PERMISSION_READ_PERSIST_TETHERING_SETTINGS)\n public boolean canControlPersistApSettings() { ... }\n }"]]