//判斷roadTitleLab.text 是否含有Kris?

if([roadTitleLab.text rangeOfString:@"Kris"].location !=NSNotFound)

//_roaldSearchText { NSLog(@"yes");

} else {

NSLog(@"no");

? }

//GCD 寫的? 倒計時

double delayInSeconds = 30.0;

dispatch_time_t popTime = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));

dispatch_after(popTime, dispatch_get_main_queue(), ^(void){

NSLog(@"Bluetooth scan for 30 seconds");

[self.manager stopScan];

});