在我的最近的项目中，我需要与一种硬件（低功耗蓝牙）进行通信。我已经实现了所有代理方法的代码。我能够连接设备和硬件，但是我没有收到配对警报（附带的屏幕截图）。为什么它不要求配对？谢谢。
#import "BTWCentralConnectionManager.h"
@implementation BTWCentralConnectionManager
@synthesize cbcManager;
@synthesize discoveredPeripheral;
@synthesize findMeServiceCharacteristic;
@synthesize findMeService;
@synthesize delegate=_delegate;
static NSString *kFindMeServiceUUID=@"1802";
static NSString *kFindMeCharacteristicUUID=@"2A06";
static BTWCentralConnectionManager* connectionManager = nil;
+(BTWCentralConnectionManager *)sharedConnectionManager{
@synchronized(self)
{
if (!connectionManager){
connectionManager=[[self alloc] init];
}
return connectionManager;
}
return nil;
}
-(void)findMe {
Byte code=0x02;
if(self.discoveredPeripheral){
[self.discoveredPeripheral writeValue:[NSData dataWithBytes:&code length:1] forCharacteristic:self.findMeServiceCharacteristic type:CBCharacteristicWriteWithoutResponse];
}else{
UIAlertView *alertView=[[UIAlertView alloc] initWithTitle:@"Test" message:@"Invalid Charactersitcs" delegate:nil cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
[alertView show];
alertView=nil;
}
}
-(void)searchForDevices{
self.cbcManager=[[CBCentralManager alloc] initWithDelegate:self queue:nil];
}
-(void)connect {
NSDictionary* connectOptions = [NSDictionary dictionaryWithObject:[NSNumber numberWithBool:YES] forKey:CBConnectPeripheralOptionNotifyOnDisconnectionKey];
[self.cbcManager connectPeripheral:self.discoveredPeripheral options:connectOptions];
}
-(void)disconnect{
[self cleanup];
}
- (void)centralManagerDidUpdateState:(CBCentralManager *)central {
switch (central.state) {
case CBCentralManagerStatePoweredOn:{
[self.cbcManager scanForPeripheralsWithServices:@[ [CBUUID UUIDWithString:kFindMeServiceUUID] ] options:@{CBCentralManagerScanOptionAllowDuplicatesKey : @NO }];
}
break;
// Scans for any peripheral
default:{
UIAlertView *alertView=[[UIAlertView alloc] initWithTitle:@"Test" message:@"Cental Manager did change state" delegate:nil cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
[alertView show];
alertView=nil;
}
break;
}
}
- (void)centralManager:(CBCentralManager *)central didDiscoverPeripheral:(CBPeripheral *)peripheral advertisementData:(NSDictionary *)advertisementData RSSI:(NSNumber *)RSSI {
// Stops scanning for peripheral
[self.cbcManager stopScan];
if (self.discoveredPeripheral != peripheral) {
self.discoveredPeripheral = peripheral;
[self.delegate didDeviceDiscoverd:self.discoveredPeripheral.name];
}
}
- (void)centralManager:(CBCentralManager *)central didFailToConnectPeripheral:(CBPeripheral *)peripheral error:(NSError *)error
{
[self.delegate didDeviceConnectionFailed:error];
[self cleanup];
}
- (void)centralManager:(CBCentralManager *)central didConnectPeripheral:(CBPeripheral *)peripheral
{
[self.delegate didDeviceConnected];
[self.discoveredPeripheral setDelegate:self];
[self.discoveredPeripheral discoverServices:@[[CBUUID UUIDWithString:kFindMeServiceUUID]]];
}
- (void)peripheral:(CBPeripheral *)aPeripheral didDiscoverServices:(NSError *)error {
if (error) {
NSString *strMsg=[NSString stringWithFormat:@"didDiscoverServices: %@", error];
UIAlertView *alertView=[[UIAlertView alloc] initWithTitle:@"Test" message:strMsg
delegate:nil cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
[alertView show];
alertView=nil;
[self cleanup];
return;
}
for (CBService *service in aPeripheral.services) {
if ([service.UUID isEqual:[CBUUID UUIDWithString:kFindMeServiceUUID]]) {
self.findMeService=service;
[self.discoveredPeripheral discoverCharacteristics:@[[CBUUID UUIDWithString:kFindMeCharacteristicUUID]] forService:self.findMeService];
}
}
}
- (void) peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error
{
if(error){
NSString *strMsg=[NSString stringWithFormat:@"didDiscoverCharacteristicsForService: %@", error];
UIAlertView *alertView=[[UIAlertView alloc] initWithTitle:@"Test" message:strMsg delegate:nil cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
[alertView show];
alertView=nil;
}
for(CBCharacteristic *character in [service characteristics])
{
if([[service UUID] isEqual:[CBUUID UUIDWithString:kFindMeServiceUUID]] &&
[[character UUID] isEqual:[CBUUID UUIDWithString:kFindMeCharacteristicUUID]])
{
NSString *strMsg=[NSString stringWithFormat:@"didDiscoverCharacteristicsForService: %@", character];
UIAlertView *alertView=[[UIAlertView alloc] initWithTitle:@"Test" message:strMsg delegate:nil cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
[alertView show];
alertView=nil;
self.findMeServiceCharacteristic = character;
}
}
}
- (void) peripheral:(CBPeripheral *)peripheral didUpdateValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{
NSString *strMsg=[NSString stringWithFormat:@"Did update value for characteristic %@, new value: %@, error: %@", characteristic, [characteristic value], error];
UIAlertView *alertView=[[UIAlertView alloc] initWithTitle:@"Test" message:strMsg delegate:nil cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
[alertView show];
alertView=nil;
}
- (void)peripheral:(CBPeripheral *)peripheral didUpdateNotificationStateForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error {
if (error) {
NSLog(@"Error changing notification state: %@", error.localizedDescription);
}
// Exits if it's not the transfer characteristic
if (![characteristic.UUID isEqual:[CBUUID UUIDWithString:kFindMeCharacteristicUUID]]) {
return;
}
NSString *strMsg=[NSString stringWithFormat:@"didUpdateNotificationStateForCharacteristic %@, reason: %@", characteristic, error];
UIAlertView *alertView=[[UIAlertView alloc] initWithTitle:@"Test" message:strMsg delegate:nil cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
[alertView show];
alertView=nil;
}
- (void) peripheral:(CBPeripheral *)peripheral didWriteValueForCharacteristic:(CBCharacteristic *)characteristic error:(NSError *)error
{
if (error)
{
NSString *strMsg=[NSString stringWithFormat:@"Failed to write value for characteristic %@, reason: %@", characteristic, error];
UIAlertView *alertView=[[UIAlertView alloc] initWithTitle:@"Test" message:strMsg delegate:nil cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
[alertView show];
alertView=nil;
}
else
{
NSString *strMsg=[NSString stringWithFormat:@"Did write value for characterstic %@, new value: %@", characteristic, [characteristic value]];
UIAlertView *alertView=[[UIAlertView alloc] initWithTitle:@"Test" message:strMsg delegate:nil cancelButtonTitle:nil otherButtonTitles:@"OK", nil];
[alertView show];
alertView=nil;
}
}
- (void)cleanup
{
if (!self.discoveredPeripheral.isConnected) {
return;
}
if (self.discoveredPeripheral.services != nil) {
for (CBService *service in self.discoveredPeripheral.services) {
if (service.characteristics != nil) {
for (CBCharacteristic *characteristic in service.characteristics) {
if ([characteristic.UUID isEqual:[CBUUID UUIDWithString:kFindMeServiceUUID]]) {
if (characteristic.isNotifying) {
[self.discoveredPeripheral setNotifyValue:NO forCharacteristic:characteristic];
return;
}
}
}
}
}
}
[self.cbcManager cancelPeripheralConnection:self.discoveredPeripheral];
[self.delegate didDeviceDisconnected];
}
@end
`