Android开启支持蓝牙ble

一、Android7.1打开蓝牙ble

1.system/bt目录：

diff --git a/include/bt_target.h b/include/bt_target.h
old mode 100644
new mode 100755
index b0cf856..d4d1556
--- a/include/bt_target.h
+++ b/include/bt_target.h
@@ -688,14 +688,14 @@
  * resolution, local address rotation etc.
  */
 #ifndef BLE_PRIVACY_SPT
-#define BLE_PRIVACY_SPT         FALSE
+#define BLE_PRIVACY_SPT         TRUE
 #endif
  
 /*
  * Enables or disables support for local privacy (ex. address rotation)
  */
 #ifndef BLE_LOCAL_PRIVACY_ENABLED
-#define BLE_LOCAL_PRIVACY_ENABLED         TRUE
+#define BLE_LOCAL_PRIVACY_ENABLED         FALSE
 #endif
  
 /*
@@ -703,7 +703,7 @@
  * feature discovery, multi-adv etc.
  */
 #ifndef BLE_VND_INCLUDED
-#define BLE_VND_INCLUDED        FALSE
+#define BLE_VND_INCLUDED        TRUE
 #endif

　　不加以上这些修改，可以搜到ble设备，但是会连接不成功。

2.farmeworks/base目录：

--- a/core/java/android/bluetooth/BluetoothAdapter.java
+++ b/core/java/android/bluetooth/BluetoothAdapter.java
@@ -909,13 +909,16 @@ public final class BluetoothAdapter {
      * @return true if Multiple Advertisement feature is supported
      */
     public boolean isMultipleAdvertisementSupported() {
-        if (getState() != STATE_ON) return false;
+        /*
+       if (getState() != STATE_ON) return false;
         try {
             return mService.isMultiAdvertisementSupported();
         } catch (RemoteException e) {
             Log.e(TAG, "failed to get isMultipleAdvertisementSupported, error: ", e);
         }
         return false;
+       */
+       return true;
     }

--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -1102,7 +1102,7 @@
     <bool name="config_bluetooth_address_validation">false</bool>
  
     <!-- Boolean indicating if current platform supports BLE peripheral mode -->
-    <bool name="config_bluetooth_le_peripheral_mode_supported">false</bool>
+    <bool name="config_bluetooth_le_peripheral_mode_supported">true</bool>
  
     <!-- Max number of scan filters supported by blutooth controller. 0 if the
          device does not support hardware scan filters-->

　　加上些，就可以正常搜索ble设备并连接成功了。

二、Android11打开蓝牙ble

diff --git a/core/java/android/bluetooth/BluetoothAdapter.java b/core/java/android/bluetooth/BluetoothAdapter.java
index 29a98faf5cd1..8d46b3415fe0 100644
--- a/core/java/android/bluetooth/BluetoothAdapter.java
+++ b/core/java/android/bluetooth/BluetoothAdapter.java
@@ -1929,7 +1929,7 @@ public final class BluetoothAdapter {
      * @return true if Multiple Advertisement feature is supported
      */
     public boolean isMultipleAdvertisementSupported() {
-        if (getState() != STATE_ON) {
+    /*    if (getState() != STATE_ON) {
             return false;
         }
         try {
@@ -1943,6 +1943,8 @@ public final class BluetoothAdapter {
             mServiceLock.readLock().unlock();
         }
         return false;
+    */
+        return true;
     }
 
     /**
diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
index c1e3026ee45c..be64201f9cf9 100644
--- a/core/res/res/values/config.xml
+++ b/core/res/res/values/config.xml
@@ -1683,7 +1683,7 @@
     <bool name="config_bluetooth_address_validation">false</bool>
 
     <!-- Boolean indicating if current platform supports BLE peripheral mode -->
-    <bool name="config_bluetooth_le_peripheral_mode_supported">false</bool>
+    <bool name="config_bluetooth_le_peripheral_mode_supported">true</bool>
 
     <!-- Boolean indicating if current platform supports HFP inband ringing -->
     <bool name="config_bluetooth_hfp_inband_ringing_support">false</bool>