本文介紹了iOS Core藍牙不要求配對的處理方法，對大家解決問題具有一定的參考價值，需要的朋友們下面隨著小編來一起學習吧！
問題描述
限時送ChatGPT賬號..
在我最近的項目中，我需要與硬件通信(藍牙低功耗).我已經實現了所有委托方法代碼.我能夠連接硬件和設備，但我沒有收到配對警報(附加屏幕截圖).為什么不要求配對?謝謝你.
In My recent project, I need to communicate a Hardware (Bluetooth Low energy).I have implement all the delegate methods code. I am able to Connect hardware and device, But I am not getting pairing alert (Attached screen shot). Why not it is asking for pairing? Thank you.
#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
`
推薦答案
如果我理解正確，您可以成功地將值寫入特征，但您沒有收到配對請求.
If I understand you right you can write a value successfully to a characteristic but you don't get a pairing request.
配對由外設觸發.這意味著外圍設備必須拒絕您的中心對特性的寫入或讀取請求.您的中央獲得拒絕未經授權的身份驗證"，然后嘗試與外圍設備配對并顯示您正在等待的配對警報彈出窗口.這一切都是由核心藍牙自動完成的.您唯一需要做的就是更改外圍設備中的特征選項和權限.這是觸發配對的蘋果示例代碼:
The pairing is triggered by the peripheral. Meaning the peripheral has to refuse the write or read request of your central to a characteristic. Your central gets the refusal "unauthorized authentication" and then tries to pair with the peripheral and showing the pairing alert pop up you are waiting for. This is all done by core bluetooth automatically. The only thing you need to do is change the characteristics options and permissions in your peripheral. This is the apple sample code to trigger a pairing:
emailCharacteristic = [[CBMutableCharacteristic alloc]
initWithType:emailCharacteristicUUID
properties:CBCharacteristicPropertyRead
| CBCharacteristicPropertyNotifyEncryptionRequired
value:nil permissions:CBAttributePermissionsReadEncryptionRequired];
來源:CoreBluetooth_concepts iOS7預覽
source: CoreBluetooth_concepts iOS7 preview
還可以查看 WWDC 2012 高級核心藍牙視頻 28 分鐘他們解釋了配對的概念.
Also check out the WWDC 2012 advanced core bluetooth video at 28 minutes they explain the concept of pairing.
這篇關于iOS Core藍牙不要求配對的文章就介紹到這了，希望我們推薦的答案對大家有所幫助，也希望大家多多支持html5模板網！
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