CoreBlueTooth步骤解析
最初：首先判断蓝牙状态是否支持和开启
* 判断是否开启蓝牙
*/
- (void)centralManagerDidUpdateState:(CBCentralManager *)central
{
if (central.state != CBCentralManagerStatePoweredOn) {
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:@"蓝牙状态" message:@"请在设置中打开蓝牙" delegate:self cancelButtonTitle:@"好" otherButtonTitles:nil, nil];
[alert show];
}else{
[self startScan];
}
}
1.首先创建CBCentralManager
2.设置CBCentralManager的代理
myCenter = [[CBCentralManager alloc] initWithDelegate:self queue:dispatch_get_main_queue() options:nil];
3.通过CBCentralManager去扫描周围的设备
这里有两个参数：
第一个参数：设置扫描指定设备的UUID的数组
第二个参数：设置扫描到的操作（比如设置notify等等）
如果两个参数都填nil代表扫描所有的设备
// 在这里收集所查找到的设备
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI
{
[self addPeripheral:peripheral advertisementData:advertisementData RSSI:RSSI];
}
4. 如果扫描到了设备，会调用CBCentralManager的代理方法didDiscoverPeripheral
{
PeriperalInfo *pi = [[PeriperalInfo alloc]init];
pi.peripheral = peripheral;
pi.uuid = [peripheral.identifier UUIDString];
pi.name = peripheral.name;
switch (peripheral.state) {
case CBPeripheralStateDisconnected:
pi.state = @"disConnected";
break;
case CBPeripheralStateConnecting:
pi.state = @"connecting";
break;
case CBPeripheralStateConnected:
pi.state = @"connected";
break;
default:
break;
}
if (advertisementData) {
pi.localName = [advertisementData objectForKey:CBAdvertisementDataLocalNameKey];
NSArray *array = [advertisementData objectForKey:CBAdvertisementDataServiceUUIDsKey];
pi.serviceUUIDS = [array componentsJoinedByString:@"; "];
}
if (RSSI) {
pi.RSSI = RSSI;
}
[self addPeripheralInfo:pi];
}
5. 收集peripheral的信息
-(void)addPeripheralInfo:(PeriperalInfo *)peripheralInfo
for(int i=0;i<self.discoveredPeripherals.count;i++){
PeriperalInfo *pi = self.discoveredPeripherals[i];
if([peripheralInfo.uuid isEqualToString:pi.uuid]){
[self.discoveredPeripherals replaceObjectAtIndex:i withObject:peripheralInfo];
return;
}
}
[self.discoveredPeripherals addObject:peripheralInfo];
if (self.delegate) {
if([(id)self.delegate respondsToSelector:@selector(didFoundPeripheral)]){
[self.delegate didFoundPeripheral];
}
}
}
6.开始连接
- (void)connectPeripheral:(CBPeripheral *)peripheral options:(NSDictionary *)options;
7. 连接成以后，会调用代理方法didConnectPeripheral
{
self.selectPeripheral = peripheral;
self.selectPeripheral.delegate = self;
[self.selectPeripheral discoverServices:nil];
}
8.当搜索到服务以后会调用代理方法，在代理方法中扫描service中的Characteristics
{
if (nil == error) {
for (CBService *service in peripheral.services) {
if ([service.UUID isEqual:[CBUUID UUIDWithString:@"F0"]]) {
self.discoveredSevice = service;
[peripheral discoverCharacteristics:nil forService:self.discoveredSevice];
}
}
}else{
}
}
9. 当扫描到Characteristics时会调用代理方法
//在这个方法中设置扫描到characteristic以后的处理
{
}
10. 每当从Characteristic中读取或写入一个值时会调用代理方法
- (void)peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{
}
11.当写入characteristic时，会调用代理方法
// 写入成功以后会调用的方法
{
}
结束
