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 (inti =0; i < [keyscount]; ++i) {
        id key = [keys objectAtIndex: i];
        NSString *keyName = (NSString*) key;
        NSObject *value = [advertisementData objectForKey: key];
        if ([value isKindOfClass: [NSArrayclass]]) {
            printf("key01: %s\n", [keyName cStringUsingEncoding:NSUTF8StringEncoding]);
            NSArray *values = (NSArray*) value;
            for (intj =0; j < [valuescount]; ++j) {
                if ([[values objectAtIndex: j]isKindOfClass: [CBUUIDclass]]) {
                    CBUUID *uuid = [values objectAtIndex: j];
                    NSData *data = uuid.data;
                    printf("UUID(%d):", j);
                    for (intj =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([keyNameisEqualToString:@"kCBAdvDataServiceData"]) {
                NSString *string = [NSStringstringWithUTF8String:valueString];
                [selfcheckAndAddNewDevice:string];
            }
            NSLog(@"   key02: %s, value: %@\n", [keyName cStringUsingEncoding:NSUTF8StringEncoding], [NSStringstringWithUTF8String:valueString]);
        }
    }

}

//解析广播包
- (void)checkAndAddNewDevice:(NSString*)serverData {
    void (^CallBack)() = ^(){
        if(self.delegate&& [self.delegaterespondsToSelector:@selector(updateDataSources:)]) {
            [self.delegateupdateDataSources:_bleArray];
        }
        self.status= (self.bleArray&&self.bleArray.count>0) ? BLEStatus_Gotit : BLEStatus_NoDevices;
        if(self.delegate&& [self.delegaterespondsToSelector:@selector(didScannerStatusChanged:)]) {
            [self.delegatedidScannerStatusChanged:_status];
        }
    };
    BLEModel *newModel = [selfbluetoothServerDataAnalyzer:serverData];
    BOOL exist = false;
    if(! newModel)return;
    if(!_bleArray) _bleArray= [NSMutableArraynew];
    for(BLEModel*modelin _bleArray) {
        if([model.b_macisEqualToString:newModel.b_mac])
            exist = true;
    }
    if(!exist) {
        [_bleArrayaddObject:newModel];
        CallBack();;
    }
}

- (BLEModel*)bluetoothServerDataAnalyzer:(NSString*)serverData {
    BLEModel *model = nil;
    if(!serverData) {
        return nil;
    }
    if([serverDatacontainsString:@" = "] && [serverDatacontainsString:@"<"] && [serverData containsString:@">"]) {
        NSArray *array = [serverData componentsSeparatedByString:@" = "];
        if(array.count==2) {
            NSString *data = array[1];
            data = [data stringByTrimmingCharactersInSet:[NSCharacterSetwhitespaceAndNewlineCharacterSet]];
            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 = [[BLEModelalloc]init:b_versionbettery:b_betterymac: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(booleanenable) {
        if (enable) {
            mHandler.postDelayed(newRunnable() {
                @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(finalBluetoothDevice 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(newRunnable() {
                                @Override
                                public void run() {
                                    adapter.addDevice(ibeacon);
                                }
                            });

                        }
//                    }
                }
            } catch (Exception e) {
                Logger.error(TAG, "解析蓝牙数据出错="+ e);
            }
        }

    };