出现如图所示情况，这时候有两种方法可以处理，一种是让硬件部修改硬件配对，另一种是程序里面测试该提示框的对应特征值，不要调用该特征值就不会出现
//2.扫描到Characteristics,特征回调
-(void)peripheral:(CBPeripheral *)peripheral didDiscoverCharacteristicsForService:(CBService *)service error:(NSError *)error{
for (CBCharacteristic *characteristic in service.characteristics)
{
_writePeripheral = peripheral;
//截取设备uuid6
NSString *UID2 =[UUIDSERVICE2 substringWithRange:NSMakeRange(4, 4)];
//转化为大写
NSString*UUIDString2 =[UID2 uppercaseString];
//获取当前密码状态
if ( [characteristic.UUID.UUIDString isEqualToString:UUIDString2]) {
_readCharacteristic =characteristic;
[peripheral setNotifyValue:YES forCharacteristic:characteristic];
}
//截取设备uuid6
NSString *UID6 =[UUIDSERVICE6 substringWithRange:NSMakeRange(4, 4)];
//转化为大写
NSString*UUIDString6 =[UID6 uppercaseString];
//截取设备uuid4
NSString *UID4 =[UUIDSERVICE4 substringWithRange:NSMakeRange(4, 4)];
//转化为大写
NSString*UUIDString4 =[UID4 uppercaseString];
//写入数据
if ( [characteristic.UUID.UUIDString isEqualToString:UUIDString6]) {
// 拿到特征,和外围设备进行交互 保存写的特征
_writeDataCharacteristic = characteristic;
[peripheral setNotifyValue:YES forCharacteristic:characteristic];
}
//获取当前状态
if ( [characteristic.UUID.UUIDString isEqualToString:UUIDString4]) {
_readCharacteristic =characteristic;
[peripheral setNotifyValue:YES forCharacteristic:characteristic];
}
}
}
在这里不要调用多余的特征值和提示框显示的特征值，
[peripheral readValueForCharacteristic:characteristic];这行代码要注意在特定的特征值里再调用，特征值外面别调用，不然问题就来了