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。

 

注意点：手机端搜索蓝牙ble的时候，手机相当于是客户端，需要有一个服务端创建出服务，手机这边才能搜索到蓝牙设备。所以一般都会有两个app，主板app（服务端），手机app（客户端）。这个地方如果不清楚，只在手机app端有安装，是不会搜索ble蓝牙服务的。