蓝牙连接，实时数据传输

菜鸟本人再做一个项目，一个类似血糖仪的设备，需要通过蓝牙实时传输测量的值然后根据数值变化去改变界面的值和波形图，本来查找了很多demo，第三方框架，都是只能发现是设备但是拿不到实时变化的值把本菜鸟一顿愁啊，然后各种找资料，外文网站啊，最后通过使用<babybluetooth>的框架，并且修改了部分代码，拿到实时变化的值，

主要是修改图中读取数值的方式即可，这个特别重要！！！！！

接下来是修改的核心类里面的代码：

#import"BabyCentralManager.h"

#import"BabyCallback.h"

@implementationBabyCentralManager

#define currChannel [babySpeaker callbackOnCurrChannel]

- (instancetype)init {

self= [superinit];

if(self) {

#if__IPHONE_OS_VERSION_MIN_REQUIRED > __IPHONE_6_0

NSDictionary*options = [NSDictionarydictionaryWithObjectsAndKeys:

//蓝牙power没打开时alert提示框

[NSNumbernumberWithBool:YES],CBCentralManagerOptionShowPowerAlertKey,

//重设centralManager恢复的IdentifierKey

@"babyBluetoothRestore",CBCentralManagerOptionRestoreIdentifierKey,

nil];

#else

NSDictionary *options =nil;

#endif

NSArray*backgroundModes = [[[NSBundlemainBundle]infoDictionary]objectForKey:@"UIBackgroundModes"];

if([backgroundModescontainsObject:@"bluetooth-central"]) {

//后台模式

centralManager= [[CBCentralManageralloc]initWithDelegate:selfqueue:niloptions:options];

}

else{

//非后台模式

centralManager= [[CBCentralManageralloc]initWithDelegate:selfqueue:nil];

}

//pocket

pocket= [[NSMutableDictionaryalloc]init];

connectedPeripherals= [[NSMutableArrayalloc]init];

discoverPeripherals= [[NSMutableArrayalloc]init];

reConnectPeripherals= [[NSMutableArrayalloc]init];

}

returnself;

}

#pragma mark -接收到通知

//扫描Peripherals

- (void)scanPeripherals {

[centralManagerscanForPeripheralsWithServices:[currChannelbabyOptions].scanForPeripheralsWithServicesoptions:[currChannelbabyOptions].scanForPeripheralsWithOptions];

}

//连接Peripherals

- (void)connectToPeripheral:(CBPeripheral*)peripheral{

[centralManagerconnectPeripheral:peripheraloptions:[currChannelbabyOptions].connectPeripheralWithOptions];

}

//断开设备连接

- (void)cancelPeripheralConnection:(CBPeripheral*)peripheral {

[centralManagercancelPeripheralConnection:peripheral];

}

//断开所有已连接的设备

- (void)cancelAllPeripheralsConnection {

for(inti=0;i

[centralManagercancelPeripheralConnection:connectedPeripherals[i]];

}

//停止扫描

- (void)cancelScan {

[centralManagerstopScan];

//停止扫描callback

if([currChannelblockOnCancelScan]) {

[currChannelblockOnCancelScan](centralManager);

}

#pragma mark - CBCentralManagerDelegate委托方法

- (void)centralManagerDidUpdateState:(CBCentralManager*)central {

//发送通知

[[NSNotificationCenterdefaultCenter]postNotificationName:BabyNotificationAtCentralManagerDidUpdateStateobject:@{@"central":central}];

switch(central.state) {

caseCBCentralManagerStateUnknown:

BabyLog(@">>>CBCentralManagerStateUnknown");

break;

caseCBCentralManagerStateResetting:

BabyLog(@">>>CBCentralManagerStateResetting");

break;

caseCBCentralManagerStateUnsupported:

BabyLog(@">>>CBCentralManagerStateUnsupported");

break;

caseCBCentralManagerStateUnauthorized:

BabyLog(@">>>CBCentralManagerStateUnauthorized");

break;

caseCBCentralManagerStatePoweredOff:

BabyLog(@">>>CBCentralManagerStatePoweredOff");

break;

caseCBCentralManagerStatePoweredOn:

BabyLog(@">>>CBCentralManagerStatePoweredOn");

[[NSNotificationCenterdefaultCenter]postNotificationName:BabyNotificationAtCentralManagerEnableobject:@{@"central":central}];

break;

default:

break;

}

//状态改变callback

if([currChannelblockOnCentralManagerDidUpdateState]) {

[currChannelblockOnCentralManagerDidUpdateState](central);

}

- (void)centralManager:(CBCentralManager*)central willRestoreState:(NSDictionary*)dict {

}

//扫描到Peripherals

- (void)centralManager:(CBCentralManager*)central didDiscoverPeripheral:(CBPeripheral*)peripheral advertisementData:(NSDictionary*)advertisementData RSSI:(NSNumber*)RSSI {

//日志

//BabyLog(@"当扫描到设备:%@",peripheral.name);

[selfaddDiscoverPeripheral:peripheral];

//发出通知

[[NSNotificationCenterdefaultCenter]postNotificationName:BabyNotificationAtDidDiscoverPeripheral

object:@{@"central":central,@"peripheral":peripheral,@"advertisementData":advertisementData,@"RSSI":RSSI}];

//扫描到设备callback

if([currChannelfilterOnDiscoverPeripherals]) {

if([currChannelfilterOnDiscoverPeripherals](peripheral.name,advertisementData,RSSI)) {

if([currChannelblockOnDiscoverPeripherals]) {

[[babySpeakercallbackOnCurrChannel]blockOnDiscoverPeripherals](central,peripheral,advertisementData,RSSI);

}

//处理连接设备

if(needConnectPeripheral) {

if([currChannelfilterOnconnectToPeripherals](peripheral.name,advertisementData,RSSI)) {

[centralManagerconnectPeripheral:peripheraloptions:[currChannelbabyOptions].connectPeripheralWithOptions];

//开一个定时器监控连接超时的情况

connectTimer= [NSTimerscheduledTimerWithTimeInterval:5.0ftarget:selfselector:@selector(disconnect:)userInfo:peripheralrepeats:NO];

}

//停止扫描

- (void)disconnect:(id)sender {

[centralManagerstopScan];

}

//连接到Peripherals-成功

- (void)centralManager:(CBCentralManager*)central didConnectPeripheral:(CBPeripheral*)peripheral {

//发出通知

[[NSNotificationCenterdefaultCenter]postNotificationName:BabyNotificationAtDidConnectPeripheral

object:@{@"central":central,@"peripheral":peripheral}];

//设置委托

[peripheralsetDelegate:self];

//BabyLog(@">>>连接到名称为（%@）的设备-成功",peripheral.name);

[connectTimerinvalidate];//停止时钟

[selfaddPeripheral:peripheral];

//执行回叫

//扫描到设备callback

if([currChannelblockOnConnectedPeripheral]) {

[currChannelblockOnConnectedPeripheral](central,peripheral);

}

//扫描外设的服务

if(needDiscoverServices) {

[peripheraldiscoverServices:[currChannelbabyOptions].discoverWithServices];

//discoverIncludedServices

}

//连接到Peripherals-失败

- (void)centralManager:(CBCentralManager*)central didFailToConnectPeripheral:(CBPeripheral*)peripheral error:(NSError*)error {

//发出通知

[[NSNotificationCenterdefaultCenter]postNotificationName:BabyNotificationAtDidFailToConnectPeripheral

object:@{@"central":central,@"peripheral":peripheral,@"error":error?error:@""}];

//BabyLog(@">>>连接到名称为（%@）的设备-失败,原因:%@",[peripheral name],[error localizedDescription]);

if([currChannelblockOnFailToConnect]) {

[currChannelblockOnFailToConnect](central,peripheral,error);

}

//Peripherals断开连接

- (void)centralManager:(CBCentralManager*)central didDisconnectPeripheral:(CBPeripheral*)peripheral error:(NSError*)error {

//发出通知

[[NSNotificationCenterdefaultCenter]postNotificationName:BabyNotificationAtDidDisconnectPeripheral

object:@{@"central":central,@"peripheral":peripheral,@"error":error?error:@""}];

//BabyLog(@">>>外设连接断开连接%@: %@\n", [peripheral name], [error localizedDescription]);

if(error)

{

BabyLog(@">>> didDisconnectPeripheral for %@ with error: %@", peripheral.name, [error localizedDescription]);

}

[selfdeletePeripheral:peripheral];

if([currChannelblockOnDisconnect]) {

[currChannelblockOnDisconnect](central,peripheral,error);

}

//判断是否全部链接都已经段开,调用blockOnCancelAllPeripheralsConnection委托

if([selffindConnectedPeripherals].count==0) {

//停止扫描callback

if([currChannelblockOnCancelAllPeripheralsConnection]) {

[currChannelblockOnCancelAllPeripheralsConnection](centralManager);

}

//BabyLog(@">>> stopConnectAllPerihperals");

}

//检查并重新连接需要重连的设备

if([reConnectPeripheralscontainsObject:peripheral]) {

[selfconnectToPeripheral:peripheral];

}

//扫描到服务

- (void)peripheral:(CBPeripheral*)peripheral didDiscoverServices:(NSError*)error {

//发出通知

[[NSNotificationCenterdefaultCenter]postNotificationName:BabyNotificationAtDidDiscoverServices

object:@{@"peripheral":peripheral,@"error":error?error:@""}];

//BabyLog(@">>>扫描到服务：%@",peripheral.services);

if(error) {

BabyLog(@">>>didDiscoverServices for %@ with error: %@", peripheral.name, [error localizedDescription]);

}

//回叫block

if([currChannelblockOnDiscoverServices]) {

[currChannelblockOnDiscoverServices](peripheral,error);

}

//discover characteristics

if(needDiscoverCharacteristics) {

for(CBService*serviceinperipheral.services) {

[peripheraldiscoverCharacteristics:[currChannelbabyOptions].discoverWithCharacteristicsforService:service];

}

//发现服务的Characteristics

- (void)peripheral:(CBPeripheral*)peripheral didDiscoverCharacteristicsForService:(CBService*)service error:(NSError*)error {

//发出通知

[[NSNotificationCenterdefaultCenter]postNotificationName:BabyNotificationAtDidDiscoverCharacteristicsForService

object:@{@"peripheral":peripheral,@"service":service,@"error":error?error:@""}];

if(error) {

BabyLog(@"error didDiscoverCharacteristicsForService for %@ with error: %@", service.UUID, [error localizedDescription]);

//return;

}

//回叫block

if([currChannelblockOnDiscoverCharacteristics]) {

[currChannelblockOnDiscoverCharacteristics](peripheral,service,error);

}

//如果需要更新Characteristic的值

if(needReadValueForCharacteristic) {

for(CBCharacteristic*characteristicinservice.characteristics) {

//[peripheral readValueForCharacteristic:characteristic];

[peripheralsetNotifyValue:YESforCharacteristic:characteristic];

//判断读写权限

//if (characteristic.properties & CBCharacteristicPropertyRead ) {

//[peripheral readValueForCharacteristic:characteristic];

//}

}

//如果搜索Characteristic的Descriptors

if(needDiscoverDescriptorsForCharacteristic) {

for(CBCharacteristic*characteristicinservice.characteristics) {

[peripheraldiscoverDescriptorsForCharacteristic:characteristic];

}

//读取Characteristics的值

- (void)peripheral:(CBPeripheral*)peripheral didUpdateValueForCharacteristic:(CBCharacteristic*)characteristic error:(NSError*)error {

//发出通知

[[NSNotificationCenterdefaultCenter]postNotificationName:BabyNotificationAtDidUpdateValueForCharacteristic

object:@{@"peripheral":peripheral,@"characteristic":characteristic,@"error":error?error:@""}];

if(error) {

BabyLog(@"error didUpdateValueForCharacteristic %@ with error: %@", characteristic.UUID, [error localizedDescription]);

//return;

}

//查找字段订阅

if([babySpeakernotifyCallback:characteristic]) {

[babySpeakernotifyCallback:characteristic](peripheral,characteristic,error);

return;

}

//回叫block

if([currChannelblockOnReadValueForCharacteristic]) {

[currChannelblockOnReadValueForCharacteristic](peripheral,characteristic,error);

}

//发现Characteristics的Descriptors

- (void)peripheral:(CBPeripheral*)peripheral didDiscoverDescriptorsForCharacteristic:(CBCharacteristic*)characteristic error:(NSError*)error {

if(error) {

BabyLog(@"error Discovered DescriptorsForCharacteristic for %@ with error: %@", characteristic.UUID, [error localizedDescription]);

//return;

}

//回叫block

if([currChannelblockOnDiscoverDescriptorsForCharacteristic]) {

[currChannelblockOnDiscoverDescriptorsForCharacteristic](peripheral,characteristic,error);

}

//如果需要更新Characteristic的Descriptors

if(needReadValueForDescriptors) {

for(CBDescriptor*dincharacteristic.descriptors) {

[peripheralreadValueForDescriptor:d];

}

//执行一次的方法

if(oneReadValueForDescriptors) {

for(CBDescriptor*dincharacteristic.descriptors) {

[peripheralreadValueForDescriptor:d];

}

oneReadValueForDescriptors=NO;

}

//读取Characteristics的Descriptors的值

- (void)peripheral:(CBPeripheral*)peripheral didUpdateValueForDescriptor:(CBDescriptor*)descriptor error:(NSError*)error {

if(error) {

BabyLog(@"error didUpdateValueForDescriptorfor %@ with error: %@", descriptor.UUID, [error localizedDescription]);

//return;

}

//回叫block

if([currChannelblockOnReadValueForDescriptors]) {

[currChannelblockOnReadValueForDescriptors](peripheral,descriptor,error);

}

- (void)peripheral:(CBPeripheral*)peripheral didWriteValueForCharacteristic:(CBCharacteristic*)characteristic error:(NSError*)error {

[[NSNotificationCenterdefaultCenter]postNotificationName:BabyNotificationAtDidWriteValueForCharacteristicobject:@{@"characteristic":characteristic,@"error":error?error:@""}];

//BabyLog(@">>>didWriteValueForCharacteristic");

//BabyLog(@">>>uuid:%@,new value:%@",characteristic.UUID,characteristic.value);

if([currChannelblockOnDidWriteValueForCharacteristic]) {

[currChannelblockOnDidWriteValueForCharacteristic](characteristic,error);

}

- (void)peripheral:(CBPeripheral*)peripheral didWriteValueForDescriptor:(CBDescriptor*)descriptor error:(NSError*)error {

//BabyLog(@">>>didWriteValueForCharacteristic");

//BabyLog(@">>>uuid:%@,new value:%@",descriptor.UUID,descriptor.value);

if([currChannelblockOnDidWriteValueForDescriptor]) {

[currChannelblockOnDidWriteValueForDescriptor](descriptor,error);

}

#pragma mark--------------数据状态改变-------------

//characteristic.isNotifying状态改变

- (void)peripheral:(CBPeripheral*)peripheral didUpdateNotificationStateForCharacteristic:(CBCharacteristic*)characteristic error:(NSError*)error {

[peripheralreadValueForCharacteristic:characteristic];

[[NSNotificationCenterdefaultCenter]postNotificationName:BabyNotificationAtDidUpdateNotificationStateForCharacteristicobject:@{@"characteristic":characteristic,@"error":error?error:@""}];

BabyLog(@">>>didUpdateNotificationStateForCharacteristic");

BabyLog(@">>>uuid:%@,isNotifying:%@",characteristic.UUID,characteristic.isNotifying?@"isNotifying":@"Notifying");

if([currChannelblockOnDidUpdateNotificationStateForCharacteristic]) {

[currChannelblockOnDidUpdateNotificationStateForCharacteristic](characteristic,error);

}

- (void)peripheral:(CBPeripheral*)peripheral didDiscoverIncludedServicesForService:(CBService*)service error:(NSError*)error {

if([currChannelblockOnDidDiscoverIncludedServicesForService]) {

[currChannelblockOnDidDiscoverIncludedServicesForService](service,error);

}

# if__IPHONE_OS_VERSION_MIN_REQUIRED < __IPHONE_8_0

- (void)peripheralDidUpdateRSSI:(CBPeripheral*)peripheral error:(nullableNSError*)error {

[[NSNotificationCenterdefaultCenter]postNotificationName:BabyNotificationAtDidReadRSSIobject:@{@"peripheral":peripheral,@"RSSI":peripheral.RSSI,@"error":error?error:@""}];

BabyLog(@">>>peripheralDidUpdateRSSI -> RSSI:%@",peripheral.RSSI);

if([currChannelblockOnDidReadRSSI]) {

[currChannelblockOnDidReadRSSI](peripheral.RSSI,error);

}

#else

- (void)peripheral:(CBPeripheral *)peripheral didReadRSSI:(NSNumber *)RSSI error:(NSError *)error {

[[NSNotificationCenter defaultCenter]postNotificationName:BabyNotificationAtDidReadRSSI object:@{@"peripheral":peripheral,@"RSSI":RSSI,@"error":error?error:@""}];

BabyLog(@">>>peripheralDidUpdateRSSI -> RSSI:%@",RSSI);

if([currChannel blockOnDidReadRSSI]) {

[currChannel blockOnDidReadRSSI](RSSI,error);

}

#endif

- (void)peripheralDidUpdateName:(CBPeripheral*)peripheral {

if([currChannelblockOnDidUpdateName]) {

[currChannelblockOnDidUpdateName](peripheral);

}

- (void)peripheral:(CBPeripheral*)peripheral didModifyServices:(NSArray*)invalidatedServices {

if([currChannelblockOnDidModifyServices]) {

[currChannelblockOnDidModifyServices](peripheral,invalidatedServices);

}

/**

sometimes ever，sometimes never.相聚有时，后会无期

this is center with peripheral's story

**/

//sometimes ever：添加断开重连接的设备

-(void)sometimes_ever:(CBPeripheral*)peripheral {

if(![reConnectPeripheralscontainsObject:peripheral]) {

[reConnectPeripheralsaddObject:peripheral];

}

//sometimes never：删除需要重连接的设备

-(void)sometimes_never:(CBPeripheral*)peripheral {

[reConnectPeripheralsremoveObject:peripheral];

}

#pragma mark -私有方法

#pragma mark -设备list管理

- (void)addDiscoverPeripheral:(CBPeripheral*)peripheral{

if(![discoverPeripheralscontainsObject:peripheral]) {

[discoverPeripheralsaddObject:peripheral];

}

- (void)addPeripheral:(CBPeripheral*)peripheral {

if(![connectedPeripheralscontainsObject:peripheral]) {

[connectedPeripheralsaddObject:peripheral];

}

- (void)deletePeripheral:(CBPeripheral*)peripheral{

[connectedPeripheralsremoveObject:peripheral];

}

- (CBPeripheral*)findConnectedPeripheral:(NSString*)peripheralName {

for(CBPeripheral*pinconnectedPeripherals) {

if([p.nameisEqualToString:peripheralName]) {

returnp;

}

returnnil;

}

- (NSArray*)findConnectedPeripherals{

returnconnectedPeripherals;

}

@end

最后编辑于：2017.12.06 03:21:20

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蓝牙连接，实时数据传输

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