Android-系统服务-BluetoothManager

0 快速索引表

• 权限汇总

https://developer.android.google.cn/reference/android/Manifest.permission

/frameworks/base/core/res/AndroidManifest.xml

android.permission.BLUETOOTH

android.permission.BLUETOOTH_SCAN

android.permission.BLUETOOTH_CONNECT

android.permission.BLUETOOTH_ADVERTISE

android.permission.BLUETOOTH_ADMIN

android.permission.BLUETOOTH_PRIVILEGED

android.permission.BLUETOOTH_MAP

android.permission.BLUETOOTH_STACK

android.permission.LOCAL_MAC_ADDRESS

• 接口汇总

https://developer.android.google.cn/reference/android/bluetooth/BluetoothManager

https://developer.android.google.cn/reference/android/bluetooth/BluetoothAdapter

https://developer.android.google.cn/reference/android/bluetooth/BluetoothSocket

/packages/modules/Bluetooth/framework/java/android/bluetooth/

/frameworks/base/core/java/android/bluetooth/

android.bluetooth.BluetoothManager.getAdapter

android.bluetooth.BluetoothAdapter.getDefaultAdapter

android.bluetooth.BluetoothAdapter.disable

android.bluetooth.BluetoothAdapter.enable

android.bluetooth.BluetoothAdapter.getAddress

android.bluetooth.BluetoothAdapter.isEnabled

android.bluetooth.BluetoothSocket.connect

android.bluetooth.BluetoothSocket.close

• adb shell svc ~

打开蓝牙

• adb shell svc bluetooth enable

关闭蓝牙

• adb shell svc bluetooth disable

• adb shell service call ~

打开蓝牙

• adb shell service call bluetooth_manager 6

关闭蓝牙

• adb shell service call bluetooth_manager 8 i32 1

• adb shell settings

查询状态

• adb shell settings get global bluetooth_on 0关1开 

修改状态

• adb shell settings put global bluetooth_on 0/1

• adb shell dumpsys ~

adb shell dumpsys bluetooth_manager

• AppOps汇总

adb shell dumpsys appops --op 77

adb shell dumpsys appops --op 111

adb shell dumpsys appops --op 114

1 需求

• 打开蓝牙的ADB命令
  • adb shell svc bluetooth enable
• 关闭蓝牙的ADB命令
  • adb shell svc bluetooth disable
• AppOps
  • adb shell dumpsys appops --op 77
  • adb shell dumpsys appops --op 111
  • adb shell dumpsys appops --op 114

2 权限

android.permission.BLUETOOTH

• Added in API level 1
• Protection level: normal

2207     <!-- Allows applications to connect to paired bluetooth devices.
2208          <p>Protection level: normal
2209     -->
2210     <permission android:name="android.permission.BLUETOOTH"
2211         android:description="@string/permdesc_bluetooth"
2212         android:label="@string/permlab_bluetooth"
2213         android:protectionLevel="normal" />

 android.permission.BLUETOOTH_SCAN

• Added in API level 31
• Protection level: dangerous

2215     <!-- Required to be able to discover and pair nearby Bluetooth devices.
2216          <p>Protection level: dangerous -->
2217     <permission android:name="android.permission.BLUETOOTH_SCAN"
2218         android:permissionGroup="android.permission-group.UNDEFINED"
2219         android:description="@string/permdesc_bluetooth_scan"
2220         android:label="@string/permlab_bluetooth_scan"
2221         android:protectionLevel="dangerous" />

 android.permission.BLUETOOTH_CONNECT

• Added in API level 31
• Protection level: dangerous

2223     <!-- Required to be able to connect to paired Bluetooth devices.
2224          <p>Protection level: dangerous -->
2225     <permission android:name="android.permission.BLUETOOTH_CONNECT"
2226         android:permissionGroup="android.permission-group.UNDEFINED"
2227         android:description="@string/permdesc_bluetooth_connect"
2228         android:label="@string/permlab_bluetooth_connect"
2229         android:protectionLevel="dangerous" />

 android.permission.BLUETOOTH_ADVERTISE

• Added in API level 31
• Protection level: dangerous

2231     <!-- Required to be able to advertise to nearby Bluetooth devices.
2232          <p>Protection level: dangerous -->
2233     <permission android:name="android.permission.BLUETOOTH_ADVERTISE"
2234         android:permissionGroup="android.permission-group.UNDEFINED"
2235         android:description="@string/permdesc_bluetooth_advertise"
2236         android:label="@string/permlab_bluetooth_advertise"
2237         android:protectionLevel="dangerous" />

android.permission.BLUETOOTH_ADMIN

• Added in API level 1
• Protection level: normal

2262     <!-- Allows applications to discover and pair bluetooth devices.
2263          <p>Protection level: normal
2264     -->
2265     <permission android:name="android.permission.BLUETOOTH_ADMIN"
2266         android:description="@string/permdesc_bluetoothAdmin"
2267         android:label="@string/permlab_bluetoothAdmin"
2268         android:protectionLevel="normal" />

android.permission.BLUETOOTH_PRIVILEGED

• Added in API level 19
• Not for use by third-party applications

2270     <!-- Allows applications to pair bluetooth devices without user interaction, and to
2271          allow or disallow phonebook access or message access.
2272          <p>Not for use by third-party applications. -->
2273     <permission android:name="android.permission.BLUETOOTH_PRIVILEGED"
2274         android:protectionLevel="signature|privileged" />

android.permission.BLUETOOTH_MAP

2276     <!-- @SystemApi Control access to email providers exclusively for Bluetooth
2277          @hide
2278     -->
2279     <permission android:name="android.permission.BLUETOOTH_MAP"
2280         android:protectionLevel="signature|role" />

android.permission.BLUETOOTH_STACK

2282     <!-- Allows bluetooth stack to access files
2283          @hide This should only be used by Bluetooth apk.
2284     -->
2285     <permission android:name="android.permission.BLUETOOTH_STACK"
2286         android:protectionLevel="signature|role" />

android.permission.LOCAL_MAC_ADDRESS

5844     <!-- @SystemApi Allows applications to read the local WiFi and Bluetooth MAC address.
5845         @hide -->
5846     <permission android:name="android.permission.LOCAL_MAC_ADDRESS"
5847                 android:protectionLevel="signature|privileged" />
5848     <uses-permission android:name="android.permission.LOCAL_MAC_ADDRESS"/>

3 接口

android.bluetooth.BluetoothManager.getAdapter

• Added in API level 18

77      /**
78       * Get the BLUETOOTH Adapter for this device.
79       *
80       * @return the BLUETOOTH Adapter
81       */
82      @RequiresNoPermission
83      public BluetoothAdapter getAdapter() {
84          return mAdapter;
85      }

android.bluetooth.BluetoothAdapter.getDefaultAdapter

• Added in API level 5
• Deprecated in API level 31

947      /**
948       * Get a handle to the default local Bluetooth adapter.
949       * <p>
950       * Currently Android only supports one Bluetooth adapter, but the API could
951       * be extended to support more. This will always return the default adapter.
952       * </p>
953       *
954       * @return the default local adapter, or null if Bluetooth is not supported
955       *         on this hardware platform
956       * @deprecated this method will continue to work, but developers are
957       *             strongly encouraged to migrate to using
958       *             {@link BluetoothManager#getAdapter()}, since that approach
959       *             enables support for {@link Context#createAttributionContext}.
960       */
961      @Deprecated
962      @RequiresNoPermission
963      public static synchronized BluetoothAdapter getDefaultAdapter() {
964          if (sAdapter == null) {
965              sAdapter = createAdapter(AttributionSource.myAttributionSource());
966          }
967          return sAdapter;
968      }

android.bluetooth.BluetoothAdapter.disable

• Added in API level 5
• Deprecated in API level 33
• 权限

1451      /**
1452       * Turn off the local Bluetooth adapter—do not use without explicit
1453       * user action to turn off Bluetooth.
1454       * <p>This gracefully shuts down all Bluetooth connections, stops Bluetooth
1455       * system services, and powers down the underlying Bluetooth hardware.
1456       * <p class="caution"><strong>Bluetooth should never be disabled without
1457       * direct user consent</strong>. The {@link #disable()} method is
1458       * provided only for applications that include a user interface for changing
1459       * system settings, such as a "power manager" app.</p>
1460       * <p>This is an asynchronous call: it will return immediately, and
1461       * clients should listen for {@link #ACTION_STATE_CHANGED}
1462       * to be notified of subsequent adapter state changes. If this call returns
1463       * true, then the adapter state will immediately transition from {@link
1464       * #STATE_ON} to {@link #STATE_TURNING_OFF}, and some time
1465       * later transition to either {@link #STATE_OFF} or {@link
1466       * #STATE_ON}. If this call returns false then there was an
1467       * immediate problem that will prevent the adapter from being turned off -
1468       * such as the adapter already being turned off.
1469       *
1470       * @return true to indicate adapter shutdown has begun, or false on immediate error
1471       *
1472       * @deprecated Starting with {@link android.os.Build.VERSION_CODES#TIRAMISU}, applications
1473       * are not allowed to enable/disable Bluetooth.
1474       * <b>Compatibility Note:</b> For applications targeting
1475       * {@link android.os.Build.VERSION_CODES#TIRAMISU} or above, this API will always fail and return
1476       * {@code false}. If apps are targeting an older SDK ({@link android.os.Build.VERSION_CODES#S}
1477       * or below), they can continue to use this API.
1478       * <p>
1479       * Deprecation Exemptions:
1480       * <ul>
1481       * <li>Device Owner (DO), Profile Owner (PO) and system apps.
1482       * </ul>
1483       */
1484      @Deprecated
1485      @RequiresLegacyBluetoothAdminPermission
1486      @RequiresBluetoothConnectPermission
1487      @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
1488      public boolean disable() {
1489          try {
1490              return mManagerService.disable(mAttributionSource, true);
1491          } catch (RemoteException e) {
1492              Log.e(TAG, "", e);
1493          }
1494          return false;
1495      }

android.bluetooth.BluetoothAdapter.enable

• Added in API level 5
• Deprecated in API level 33
• 权限
  • android.permission.BLUETOOTH_ADMIN
  • android.permission.BLUETOOTH_CONNECT

1396      /**
1397       * Turn on the local Bluetooth adapter—do not use without explicit
1398       * user action to turn on Bluetooth.
1399       * <p>This powers on the underlying Bluetooth hardware, and starts all
1400       * Bluetooth system services.
1401       * <p class="caution"><strong>Bluetooth should never be enabled without
1402       * direct user consent</strong>. If you want to turn on Bluetooth in order
1403       * to create a wireless connection, you should use the {@link
1404       * #ACTION_REQUEST_ENABLE} Intent, which will raise a dialog that requests
1405       * user permission to turn on Bluetooth. The {@link #enable()} method is
1406       * provided only for applications that include a user interface for changing
1407       * system settings, such as a "power manager" app.</p>
1408       * <p>This is an asynchronous call: it will return immediately, and
1409       * clients should listen for {@link #ACTION_STATE_CHANGED}
1410       * to be notified of subsequent adapter state changes. If this call returns
1411       * true, then the adapter state will immediately transition from {@link
1412       * #STATE_OFF} to {@link #STATE_TURNING_ON}, and some time
1413       * later transition to either {@link #STATE_OFF} or {@link
1414       * #STATE_ON}. If this call returns false then there was an
1415       * immediate problem that will prevent the adapter from being turned on -
1416       * such as Airplane mode, or the adapter is already turned on.
1417       *
1418       * @return true to indicate adapter startup has begun, or false on immediate error
1419       *
1420       * @deprecated Starting with {@link android.os.Build.VERSION_CODES#TIRAMISU}, applications
1421       * are not allowed to enable/disable Bluetooth.
1422       * <b>Compatibility Note:</b> For applications targeting
1423       * {@link android.os.Build.VERSION_CODES#TIRAMISU} or above, this API will always fail and return
1424       * {@code false}. If apps are targeting an older SDK ({@link android.os.Build.VERSION_CODES#S}
1425       * or below), they can continue to use this API.
1426       * <p>
1427       * Deprecation Exemptions:
1428       * <ul>
1429       * <li>Device Owner (DO), Profile Owner (PO) and system apps.
1430       * </ul>
1431       */
1432      @Deprecated
1433      @RequiresLegacyBluetoothAdminPermission
1434      @RequiresBluetoothConnectPermission
1435      @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
1436      public boolean enable() {
1437          if (isEnabled()) {
1438              if (DBG) {
1439                  Log.d(TAG, "enable(): BT already enabled!");
1440              }
1441              return true;
1442          }
1443          try {
1444              return mManagerService.enable(mAttributionSource);
1445          } catch (RemoteException e) {
1446              Log.e(TAG, "", e);
1447          }
1448          return false;
1449      }

android.bluetooth.BluetoothAdapter.getAddress

• Added in API level 5

1521      /**
1522       * Returns the hardware address of the local Bluetooth adapter.
1523       * <p>For example, "00:11:22:AA:BB:CC".
1524       *
1525       * @return Bluetooth hardware address as string
1526       *
1527       * Requires {@code android.Manifest.permission#LOCAL_MAC_ADDRESS} and
1528       * {@link android.Manifest.permission#BLUETOOTH_CONNECT}.
1529       */
1530      @RequiresLegacyBluetoothPermission
1531      @RequiresBluetoothConnectPermission
1532      public String getAddress() {
1533          try {
1534              return mManagerService.getAddress(mAttributionSource);
1535          } catch (RemoteException e) {
1536              Log.e(TAG, "", e);
1537          }
1538          return null;
1539      }

android.bluetooth.BluetoothAdapter.isEnabled

• Added in API level 5 

1133      /**
1134       * Return true if Bluetooth is currently enabled and ready for use.
1135       * <p>Equivalent to:
1136       * <code>getBluetoothState() == STATE_ON</code>
1137       *
1138       * @return true if the local adapter is turned on
1139       */
1140      @RequiresLegacyBluetoothPermission
1141      @RequiresNoPermission
1142      public boolean isEnabled() {
1143          return getState() == BluetoothAdapter.STATE_ON;
1144      }

​

​

参考资料：

https://developer.android.google.cn/reference/android/bluetooth/BluetoothAdapter

/packages/modules/Bluetooth/framework/java/android/bluetooth/BluetoothAdapter.java

/frameworks/base/core/java/android/bluetooth/BluetoothAdapter.java

android.bluetooth.BluetoothSocket.connect

• Added in API level 5

402      /**
403       * Attempt to connect to a remote device.
404       * <p>This method will block until a connection is made or the connection
405       * fails. If this method returns without an exception then this socket
406       * is now connected.
407       * <p>Creating new connections to
408       * remote Bluetooth devices should not be attempted while device discovery
409       * is in progress. Device discovery is a heavyweight procedure on the
410       * Bluetooth adapter and will significantly slow a device connection.
411       * Use {@link BluetoothAdapter#cancelDiscovery()} to cancel an ongoing
412       * discovery. Discovery is not managed by the Activity,
413       * but is run as a system service, so an application should always call
414       * {@link BluetoothAdapter#cancelDiscovery()} even if it
415       * did not directly request a discovery, just to be sure.
416       * <p>{@link #close} can be used to abort this call from another thread.
417       *
418       * @throws IOException on error, for example connection failure
419       */
420      @RequiresBluetoothConnectPermission
421      @RequiresPermission(android.Manifest.permission.BLUETOOTH_CONNECT)
422      public void connect() throws IOException {
423          if (mDevice == null) throw new IOException("Connect is called on null device");
424  
425          try {
426              if (mSocketState == SocketState.CLOSED) throw new IOException("socket closed");
427              IBluetooth bluetoothProxy =
428                      BluetoothAdapter.getDefaultAdapter().getBluetoothService();
429              if (bluetoothProxy == null) throw new IOException("Bluetooth is off");
430              IBluetoothSocketManager socketManager = bluetoothProxy.getSocketManager();
431              if (socketManager == null) throw new IOException("bt get socket manager failed");
432              mPfd = socketManager.connectSocket(mDevice, mType, mUuid, mPort, getSecurityFlags());
433              synchronized (this) {
434                  if (DBG) Log.d(TAG, "connect(), SocketState: " + mSocketState + ", mPfd: " + mPfd);
435                  if (mSocketState == SocketState.CLOSED) throw new IOException("socket closed");
436                  if (mPfd == null) throw new IOException("bt socket connect failed");
437                  FileDescriptor fd = mPfd.getFileDescriptor();
438                  mSocket = new LocalSocket(fd);
439                  mSocketIS = mSocket.getInputStream();
440                  mSocketOS = mSocket.getOutputStream();
441              }
442              int channel = readInt(mSocketIS);
443              if (channel <= 0) {
444                  throw new IOException("bt socket connect failed");
445              }
446              mPort = channel;
447              waitSocketSignal(mSocketIS);
448              synchronized (this) {
449                  if (mSocketState == SocketState.CLOSED) {
450                      throw new IOException("bt socket closed");
451                  }
452                  mSocketState = SocketState.CONNECTED;
453              }
454          } catch (RemoteException e) {
455              Log.e(TAG, e.toString() + "\n" + Log.getStackTraceString(new Throwable()));
456              throw new IOException("unable to send RPC: " + e.getMessage());
457          }
458      }

android.bluetooth.BluetoothSocket.close

• Added in API level 5

636      @Override
637      public void close() throws IOException {
638          Log.d(TAG, "close() this: " + this + ", channel: " + mPort + ", mSocketIS: " + mSocketIS
639                  + ", mSocketOS: " + mSocketOS + ", mSocket: " + mSocket + ", mSocketState: "
640                  + mSocketState);
641          if (mSocketState == SocketState.CLOSED) {
642              return;
643          } else {
644              synchronized (this) {
645                  if (mSocketState == SocketState.CLOSED) {
646                      return;
647                  }
648                  mSocketState = SocketState.CLOSED;
649                  if (mSocket != null) {
650                      if (DBG) Log.d(TAG, "Closing mSocket: " + mSocket);
651                      mSocket.shutdownInput();
652                      mSocket.shutdownOutput();
653                      mSocket.close();
654                      mSocket = null;
655                  }
656                  if (mPfd != null) {
657                      mPfd.close();
658                      mPfd = null;
659                  }
660              }
661          }
662      }

参考资料

https://developer.android.google.cn/reference/android/bluetooth/BluetoothSocket

/packages/modules/Bluetooth/framework/java/android/bluetooth/BluetoothSocket.java

/frameworks/base/core/java/android/bluetooth/BluetoothSocket.java

4 示例

AndroidManifest.xml

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.dsl.bluetoothdemo">
 
    <uses-permission android:name="android.permission.BLUETOOTH_CONNECT" />
 
    <uses-permission android:name="android.permission.LOCAL_MAC_ADDRESS" />
 
    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:roundIcon="@mipmap/ic_launcher_round"
        android:supportsRtl="true"
        android:theme="@style/Theme.BluetoothDemo">
        <activity
            android:name=".MainActivity"
            android:exported="true">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
 
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
    </application>
 
</manifest>

activity_main.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical"
    tools:context=".MainActivity">
 
    <Button
        android:id="@+id/btnBtstate"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="获取蓝牙状态" />
 
    <TextView
        android:id="@+id/tvBtState"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
 
    <Button
        android:id="@+id/btnTurnOn"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="打开蓝牙 方法：enable"
        android:textAllCaps="false" />
 
    <Button
        android:id="@+id/btnTurnOnUseIntent"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="打开蓝牙 方法：intent"
        android:textAllCaps="false" />
 
    <Button
        android:id="@+id/btnTurnOff"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="关闭蓝牙"
        android:textAllCaps="false" />
 
    <Button
        android:id="@+id/btnGetAddress"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:text="获取蓝牙MAC地址" />
 
    <TextView
        android:id="@+id/tvBtAddress"
        android:layout_width="match_parent"
        android:layout_height="wrap_content" />
 
</LinearLayout>

Main.java

package com.dsl.bluetoothdemo;
 
import android.bluetooth.BluetoothAdapter;
import android.bluetooth.BluetoothManager;
import android.content.Intent;
import android.os.Build;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.TextView;
 
import androidx.annotation.RequiresApi;
import androidx.appcompat.app.AppCompatActivity;
 
 
/**
 * 第一步，判断设备是否支持蓝牙；
 * 第二步，判断设备蓝牙是否开启；
 * 第三步，操作蓝牙；
 */
public class MainActivity extends AppCompatActivity {
 
    BluetoothManager bluetoothManager;
 
    BluetoothAdapter bluetoothAdapter;
 
    @RequiresApi(api = Build.VERSION_CODES.M)
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
 
        Button btnBtState = findViewById(R.id.btnBtstate);
        TextView tvBtState = findViewById(R.id.tvBtState);
 
        Button btnTurnOn = findViewById(R.id.btnTurnOn);
        Button btnTurnOnUseIntent = findViewById(R.id.btnTurnOnUseIntent);
        Button btnTurnOff = findViewById(R.id.btnTurnOff);
 
        Button btnGetAddress = findViewById(R.id.btnGetAddress);
        TextView tvBtAddress = findViewById(R.id.tvBtAddress);
 
        /**
         * 获取蓝牙适配器实例，有两种方式，推荐方式二
         * 方式一：getSystemService
         * 方式二：getDefaultAdapter
         */
//        bluetoothManager = (BluetoothManager) getSystemService(BluetoothManager.class);
        bluetoothManager = (BluetoothManager) getSystemService(BLUETOOTH_SERVICE);
        bluetoothAdapter = bluetoothManager.getAdapter();
 
//        bluetoothAdapter = BluetoothAdapter.getDefaultAdapter();
 
        btnBtState.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                boolean state = bluetoothAdapter.isEnabled();
                tvBtState.setText(state + "");
            }
        });
 
        btnTurnOn.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                bluetoothAdapter.enable();
            }
        });
 
        btnTurnOnUseIntent.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                Intent intent = new Intent(BluetoothAdapter.ACTION_REQUEST_ENABLE);
                startActivityForResult(intent, 1);
            }
        });
 
        btnTurnOff.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                bluetoothAdapter.disable();
            }
        });
 
        btnGetAddress.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View view) {
                String mac = bluetoothAdapter.getAddress();
                tvBtAddress.setText(mac);
            }
        });
    }
}

5 adb svc命令

adb shell svc bluetooth enable

adb shell svc bluetooth disable

6 adb appops命令 

adb shell dumpsys appops --op 77

• APP_OP_BLUETOOTH_SCAN = 77
• Manifest.permission.BLUETOOTH_SCAN

adb shell dumpsys appops --op 111

•  APP_OP_BLUETOOTH_CONNECT = 111
• Manifest.permission.BLUETOOTH_CONNECT

adb shell dumpsys appops --op 114

• APP_OP_BLUETOOTH_ADVERTISE = 114
• Manifest.permission.BLUETOOTH_ADVERTISE

参考资料： 

Bluetooth permissions  |  Android Developers

AppOpsManager.java - OpenGrok cross reference for /frameworks/base/core/java/android/app/AppOpsManager.javaenums.proto - OpenGrok cross reference for /frameworks/proto_logging/stats/enums/app/enums.proto

7 参考资料（权限）

Manifest.permission  |  Android Developers

/frameworks/base/core/res/AndroidManifest.xml

参考资料（接口）

https://developer.android.google.cn/reference/android/bluetooth/BluetoothManager

https://developer.android.google.cn/reference/android/bluetooth/BluetoothAdapter

https://developer.android.google.cn/reference/android/bluetooth/BluetoothSocket

/packages/modules/Bluetooth/framework/java/android/bluetooth/

/frameworks/base/core/java/android/bluetooth/

参考资料（指南）

蓝牙概览  |  Android 开发者  |  Android Developers