IOS/Android 读取蓝牙设备电量信息

IOS/Android 读取蓝牙设备电量信息

使用系统API扫描到蓝牙设备：

IOS使用到的framework

     1.CoreBluetooth/CoreBluetooth.h

Android使用到的framework

     1.android.bluetooth.BluetoothAdapter

     2.android.bluetooth.BluetoothDevice

     3.android.bluetooth.BluetoothManager

蓝牙默认广播中是不会带有电量信息的，但是可以通过定制蓝牙硬件的方式，手动添加额外信息ServiceData，然后使用IOS/Android原生的API扫描蓝牙广播数据，并根据自己定义的协议对其进行解析便可得到蓝牙电量信息。

IOS 代码示例

- ( void )centralManager:( CBCentralManager *)central didDiscoverPeripheral:( CBPeripheral *)peripheral advertisementData:( NSDictionary < NSString *, id > *)advertisementData RSSI:( NSNumber *)RSSI {     NSArray *keys = [advertisementData allKeys ];     for ( int i = 0 ; i < [keys count ]; ++i) {         id key = [keys objectAtIndex : i];         NSString *keyName = ( NSString *) key;         NSObject *value = [advertisementData objectForKey : key];         if ([value isKindOfClass : [ NSArray class ]]) {             printf ( "key01: %s\n" , [keyName cStringUsingEncoding : NSUTF8StringEncoding ]);             NSArray *values = ( NSArray *) value;             for ( int j = 0 ; j < [values count ]; ++j) {                 if ([[values objectAtIndex : j] isKindOfClass : [ CBUUID class ]]) {                     CBUUID *uuid = [values objectAtIndex : j];                     NSData *data = uuid. data ;                     printf ( "UUID(%d):" , j);                     for ( int j = 0 ; j < data. length ; ++j)                         printf ( " %2X" , (( UInt8 *) data. bytes )[j]);                     printf ( "\n" );                 } else {                     const char *valueString = [[value description ] cStringUsingEncoding : NSUTF8StringEncoding ];                     printf ( "      value(%d): %s\n" , j, valueString);                 }             }         } else {             const char *valueString = [[value description ] cStringUsingEncoding : NSUTF8StringEncoding ];                         if ([keyName isEqualToString : @"kCBAdvDataServiceData" ]) {                 NSString *string = [ NSString stringWithUTF8String :valueString];                 [ self checkAndAddNewDevice :string];             }             NSLog ( @"   key02: %s, value: %@\n" , [keyName cStringUsingEncoding : NSUTF8StringEncoding ], [ NSString stringWithUTF8String :valueString]);         }     } } // 解析广播包 - ( void )checkAndAddNewDevice:( NSString *)serverData {     void (^CallBack)() = ^(){         if ( self . delegate && [ self . delegate respondsToSelector : @selector (updateDataSources:)]) {             [ self . delegate updateDataSources : _bleArray ];         }         self . status = ( self . bleArray && self . bleArray . count > 0 ) ? BLEStatus_Gotit : BLEStatus_NoDevices ;         if ( self . delegate && [ self . delegate respondsToSelector : @selector (didScannerStatusChanged:)]) {             [ self . delegate didScannerStatusChanged : _status ];         }     };     BLEModel *newModel = [ self bluetoothServerDataAnalyzer :serverData];     BOOL exist = false ;     if (! newModel) return ;     if (! _bleArray )  _bleArray = [ NSMutableArray new ];     for ( BLEModel *model in _bleArray ) {         if ([model. b_mac isEqualToString :newModel. b_mac ])             exist = true ;     }     if (!exist) {         [ _bleArray addObject :newModel];         CallBack();;     } } - ( BLEModel *)bluetoothServerDataAnalyzer:( NSString *)serverData {     BLEModel *model = nil ;     if (!serverData) {         return nil ;     }     if ([serverData containsString : @" = " ] && [serverData containsString : @"<" ] && [serverData containsString : @">" ]) {         NSArray *array = [serverData componentsSeparatedByString : @" = " ];         if (array. count == 2 ) {             NSString *data = array[ 1 ];             data = [data stringByTrimmingCharactersInSet :[ NSCharacterSet whitespaceAndNewlineCharacterSet ]];             data = [data stringByReplacingOccurrencesOfString : @" " withString : @"" ];             if (data. length == 21 ) {                 NSString *body = [data substringWithRange : NSMakeRange ( 1 , data. length - 5 )];                 NSString *b_version = [body substringWithRange : NSMakeRange ( 0 , 2 )];                 NSString *b_bettery = [body substringWithRange : NSMakeRange ( 2 , 2 )];                 NSString *b_mac     = [body substringWithRange : NSMakeRange ( 4 , body. length - 4 )];                 model = [[ BLEModel alloc ] init :b_version bettery :b_bettery mac :b_mac]; //                NSLog(@" 版本 :%@ 电量 :%@ mac:%@", model.b_version, model.b_bettery, model.b_mac);             }         }     }     return model; }

Android 代码示例

/**      * 扫描设备      *      * @param enable      */     private void scanLeDevice( boolean enable) {         if (enable) {             mHandler.postDelayed( new Runnable() {                 @Override                 public void run() {                     // TODO Auto-generated method stub                     mBluetoothAdapter.stopLeScan(mLeScanCallback);                     invalidateOptionsMenu();                 }             }, SCAN_PERIOD); // 在搜索时间内，关闭搜索标志，不对搜索回调函数进行响应             mBluetoothAdapter.startLeScan(mLeScanCallback);         } else {             mBluetoothAdapter.stopLeScan(mLeScanCallback);         }         Logger.error(TAG, " 是否开始扫描 =" + enable);         invalidateOptionsMenu();     }     // Device scan callback.     private BluetoothAdapter.LeScanCallback mLeScanCallback = new BluetoothAdapter.LeScanCallback() {         @Override         public void onLeScan( final BluetoothDevice device, int rssi, byte [] scanRecord) {             final IBeaconClass.IBeacon ibeacon = IBeaconClass.fromScanData(device, rssi, scanRecord);             if (ibeacon == null ) return ;             try {                 String strTemp = StringUtil.bytesToHexString(scanRecord);                 Logger.error(TAG, strTemp.length() + "= 长度，回调方法 -onLeScan()=" + strTemp); //0201061aff4c000215fda50693a4e24fb1afcfc6eb07647825000a0007c5090942523531343633310b1642523d6400cdff003ab100000000000000000000                 if (!TextUtils.isEmpty(strTemp)) {                     String usefulData = strTemp.substring( 86 , 106 ); //4252 3d6400cdff003a9e                     Logger.error(TAG, usefulData.length() + "= 长度，回调方法 -onLeScan() 截取有用数据 usefulData=" + usefulData); //                String serviceID1 = usefulData.substring(2); //                    String serviceID = usefulData.substring(2, 4); //                    if (serviceID.equals("52")) {                         String strVersion = usefulData.substring( 4 , 6 );                         int intVersion = Integer.parseInt(strVersion, 16 );                         String strPower = usefulData.substring( 6 , 8 );                         int intPower = Integer.parseInt(strPower, 16 );                         Logger.error(TAG, strVersion + "=strVersion 回调方法 -onLeScan() ，版本值 intVersion=" + intVersion);                         Logger.error(TAG, strPower + "=strPower 回调方法 -onLeScan() ，电量值 intPower=" + intPower);                         if (intPower > 0 ) {                             ibeacon.version = intVersion;                             ibeacon.power = intPower;                             runOnUiThread( new Runnable() {                                 @Override                                 public void run() {                                     adapter.addDevice(ibeacon);                                 }                             });                         } //                    }                 }             } catch (Exception e) {                 Logger.error(TAG, " 解析蓝牙数据出错 =" + e);             }         }     };