iOS開發藍芽 藍芽4.0的各種踩過的坑，希望你們少踩點，ios踩點

iOS開發藍芽 藍芽4.0的各種踩過的坑，希望你們少踩點，ios踩點

1.首先建立這個三個參數

@property (nonatomic,strong)CBCentralManager * manager;@property (nonatomic,strong)CBPeripheral     * peripheral;@property (nonatomic,strong)CBCharacteristic *writeDataCharacteristic

2、初始化CBCentralManager

-(CBCentralManager *)manager{    if (!_manager )    {        _manager  = [[CBCentralManager alloc]initWithDelegate:self queue:dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0) options:nil];    }    return _manager;}

3.開始掃描藍芽

   [self.manager scanForPeripheralsWithServices:nil options:@{CBCentralManagerRestoredStateScanOptionsKey:@(YES)}];

 

4.當藍芽狀態改變的時候就會調用這個方法

- (void)centralManagerDidUpdateState:(CBCentralManager *)central{    switch (central.state) {        case CBCentralManagerStateUnknown:             //裝置不支援的狀態            NSLog(@">>>CBCentralManagerStateUnknown");            {                dispatch_async(dispatch_get_main_queue(), ^{                    ALERTVIEW(@"裝置不支援");                });            }            break;        case CBCentralManagerStateResetting:            //正在重設狀態        {            dispatch_async(dispatch_get_main_queue(), ^{                ALERTVIEW(@"正在重設狀態");            })  ;        }            NSLog(@">>>CBCentralManagerStateResetting");            break;        case CBCentralManagerStateUnsupported:             //裝置不支援的狀態        {            dispatch_async(dispatch_get_main_queue(), ^{                ALERTVIEW(@"裝置不支援的狀態");            });        }            NSLog(@">>>CBCentralManagerStateUnsupported");            break;        case CBCentralManagerStateUnauthorized:            // 裝置未授權狀態        {            dispatch_async(dispatch_get_main_queue(), ^{                ALERTVIEW(@"裝置未授權狀態");            });        }            NSLog(@">>>CBCentralManagerStateUnauthorized");            break;        case CBCentralManagerStatePoweredOff:             //裝置關閉狀態        {            dispatch_async(dispatch_get_main_queue(), ^{                ALERTVIEW(@"裝置關閉狀態");            });        }            NSLog(@">>>CBCentralManagerStatePoweredOff");            break;        case CBCentralManagerStatePoweredOn:            NSLog(@">>>CBCentralManagerStatePoweredOn");            //開始掃描周圍的外設            [self.manager scanForPeripheralsWithServices:nil options:@{CBCentralManagerRestoredStateScanOptionsKey:@(YES)}];            break;        default:            break;    }}

5.串連外圍裝置

- (void)connect:(CBPeripheral *)peripheral{    // 串連外圍裝置    [self.manager connectPeripheral:peripheral options:nil];}

6.串連玩裝置就調用成功的方法，然後開始掃描

//串連到Peripherals-成功 //掃描外設中的服務和特徵  串連上外圍裝置的時候會調用該方法- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral{    NSLog(@">>>串連到名稱為（%@）的裝置-成功",peripheral.name);    //設定的peripheral委託CBPeripheralDelegate    //@interface ViewController : UIViewController    [peripheral setDelegate:self];    //掃描外設Services，成功後會進入方法：-(void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error{    [peripheral discoverServices:nil];}//串連到Peripherals-失敗-(void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error{    NSLog(@">>>串連到名稱為（%@）的裝置-失敗,原因:%@",[peripheral name],[error localizedDescription]);}

7.探索服務和裝置的服務裝置services

//探索服務- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI{    NSLog(@"Discovered services for %@ ", peripheral.name);    if (![self.dataSourceArray containsObject:peripheral])    {        [self.dataSourceArray addObject:peripheral];        NSLog(@"%@",peripheral);        dispatch_async(dispatch_get_main_queue(), ^{            [_tableView reloadData];        });    }}/** *  發現外圍裝置的服務會來到該方法(掃描到服務之後直接添加peripheral的services) */- (void)peripheral:(CBPeripheral *)peripheral didDiscoverServices:(NSError *)error{    NSLog(@"發現外圍裝置的服務");    for (CBService *serivce in peripheral.services) {        NSLog(@"====%@------%@+++++++",serivce.UUID.UUIDString,self.peripheral.identifier);        if ([serivce.UUID.UUIDString isEqualToString:UUIDSTR_ISSC_PROPRIETARY_SERVICE]) {            // characteristicUUIDs : 可以指定想要掃描的特徵(傳nil,掃描所有的特徵)            [peripheral discoverCharacteristics:nil forService:serivce];        }    }}

8.找到了裝置的服務然後掃描特徵

- (void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error{    NSLog(@"發現外圍裝置的特徵");    for (CBCharacteristic *characteristic in service.characteristics) {        NSLog(@"====%@------+",characteristic.UUID.UUIDString);        if ([characteristic.UUID.UUIDString isEqualToString:UUIDSTR_ISSC_TRANS_TX]) {            // 拿到特徵,和外圍裝置進行互動            [self notifyCharacteristic:peripheral characteristic:characteristic];        }    }    for (CBCharacteristic *characteristic in service.characteristics) {        NSLog(@"====%@------+",characteristic.UUID.UUIDString);        if ([characteristic.UUID.UUIDString isEqualToString:UUIDSTR_ISSC_TRANS_RX]) {            // 拿到特徵,和外圍裝置進行互動   儲存寫的特徵            self.writeDataCharacteristic = characteristic;        }    }}

 

9.最後一步要寫上通知這個一定要寫上

//設定通知-(void)notifyCharacteristic:(CBPeripheral *)peripheral             characteristic:(CBCharacteristic *)characteristic{    //設定通知，資料通知會進入：didUpdateValueForCharacteristic方法    [peripheral setNotifyValue:YES forCharacteristic:characteristic];    [self.manager stopScan];}//取消通知-(void)cancelNotifyCharacteristic:(CBPeripheral *)peripheral                   characteristic:(CBCharacteristic *)characteristic{    [peripheral setNotifyValue:NO forCharacteristic:characteristic];}

 

10.大功告成只差一步就是寫資料

//寫資料-(void)writeCharacteristic:(CBPeripheral *)peripheral            characteristic:(CBCharacteristic *)characteristic                     value:(NSData *)value{    //只有 characteristic.properties 有write的許可權才可以寫    if(characteristic.properties & CBCharacteristicPropertyWrite){        /*         最好一個type參數可以為CBCharacteristicWriteWithResponse或type:CBCharacteristicWriteWithResponse,區別是是否會有反饋         */        [peripheral writeValue:value forCharacteristic:characteristic type:CBCharacteristicWriteWithResponse];    }else{        NSLog(@"該欄位不可寫！");    }}

11.希望能幫到人，讓別人少走點坑。