開發(fā)平臺基本信息

芯片: MT8766
版本: Android 12
kernel: msm-4.19

問題描述

之前有個需求要設(shè)備默認開啟WIFI熱點，默認開啟usb共享網(wǎng)絡(luò)；而熱點在原生的設(shè)定里面有個超時機制，如果在限定時間內(nèi)，沒有任何設(shè)備連接共享出來的網(wǎng)絡(luò)，則會自動關(guān)閉熱點。但是，客戶的需求是一直保持共享網(wǎng)絡(luò)開啟。

解決方法

熱點超時時間是讀取config文件中config_wifiFrameworkSoftApShutDownTimeoutMilliseconds的值；這個在低版本是寫在framework目錄下；而在Android12中，則是放在了packages/modules/Wifi/service/ServiceWifiResources/res/values/config.xml；默認值是
600000；也就是10分鐘；所以，改大這個默認值也可以實現(xiàn)默認不關(guān)閉，但是，最大也就是int類型的最大值2147483647；大概是10天左右。

• 還有一種做法，就是在觸發(fā)超時關(guān)閉共享網(wǎng)絡(luò)的地方，跳過關(guān)閉的步驟，具體實現(xiàn)如下：

--- a/packages/modules/Wifi/service/java/com/android/server/wifi/SoftApManager.java
+++ b/packages/modules/Wifi/service/java/com/android/server/wifi/SoftApManager.java
@@ -1424,21 +1424,21 @@ public class SoftApManager implements ActiveModeManager {// Already started, ignore this command.break;case CMD_NO_ASSOCIATED_STATIONS_TIMEOUT:
-                        if (!mTimeoutEnabled) {
-                            Log.wtf(getTag(), "Timeout message received while timeout is disabled."
-                                    + " Dropping.");
-                            break;
-                        }
-                        if (getConnectedClientList().size() != 0) {
-                            Log.wtf(getTag(), "Timeout message received but has clients. "
-                                    + "Dropping.");
-                            break;
-                        }
-                        mSoftApNotifier.showSoftApShutdownTimeoutExpiredNotification();
-                        Log.i(getTag(), "Timeout message received. Stopping soft AP.");
-                        updateApState(WifiManager.WIFI_AP_STATE_DISABLING,
-                                WifiManager.WIFI_AP_STATE_ENABLED, 0);
-                        quitNow();
+                        // if (!mTimeoutEnabled) {
+                        //     Log.wtf(getTag(), "Timeout message received while timeout is disabled."
+                        //             + " Dropping.");
+                        //     break;
+                        // }
+                        // if (getConnectedClientList().size() != 0) {
+                        //     Log.wtf(getTag(), "Timeout message received but has clients. "
+                        //             + "Dropping.");
+                        //     break;
+                        // }
+                        // mSoftApNotifier.showSoftApShutdownTimeoutExpiredNotification();
+                        // Log.i(getTag(), "Timeout message received. Stopping soft AP.");
+                        // updateApState(WifiManager.WIFI_AP_STATE_DISABLING,
+                        //         WifiManager.WIFI_AP_STATE_ENABLED, 0);
+                        // quitNow();break;case CMD_NO_ASSOCIATED_STATIONS_TIMEOUT_ON_ONE_INSTANCE:if (!isBridgedMode() || mCurrentSoftApInfoMap.size() != 2) {