Question

我正在使用iSpeech API。我已经在他们的论坛上发布了，但那里没有太多的活动。我可以传递一个字符串并让应用程序说出来。但现在我想传入一个字符串数组，比如说5.我希望引擎一个接一个地说出这些字符串，但它只说第一个字符串。我决定使用NSOperationQueue，所以在我的viewDidLoad中我做了：

//Create Queue
    queue = [[NSOperationQueue alloc] init];
    [queue setMaxConcurrentOperationCount:1];

然后我这样做：

（void）tableView：（UITableView *）tableView didSelectRowAtIndexPath：（NSIndexPath *）indexPath {

//Set loop for 5 strings
[self fetchStringsToSpeak:indexPath];

}

- （无效）fetchStringsToSpeak：（NSIndexPath *）indexPath {

int stringsToSpeak = 5;

for (int counter = 0; counter < stringsToSpeak; counter++) {

    //Get the string
    NSDictionary *currentString = [self.stringsArray objectAtIndex:indexPath.row+counter];

    //3. Fill im text and image for cell
    NSString *string = [currentString objectForKey:@"text"];

    //Clean the string from URLs
    NSError *error;
    NSDataDetector *linkDetector = [NSDataDetector dataDetectorWithTypes:NSTextCheckingTypeLink error:&error];
    NSArray *matches = [linkDetector matchesInString:string options:0 range:NSMakeRange(0, [string length])];
    NSLog(@"matches %@", matches);

    if ([matches count] > 0) {
        for (NSTextCheckingResult *match in matches) {
            if ([match resultType] == NSTextCheckingTypeLink) {
                NSString *linkToRemove = [[match URL] absoluteString];
                self.cleanString = [string stringByReplacingOccurrencesOfString:linkToRemove withString:@""];
                NSLog(@"Clean string: %@", self.cleanString);

            }
        }
    } else {
        NSLog(@"NO LINK");
        self.cleanString = string;
    } //END IF/ELSE

NSInvocationOperation *operation = [[NSInvocationOperation alloc]initWithTarget:self selector:@selector(speakAString:) object:self.cleanString];
[queue addOperation:operation];

//Message back to the main thread
[self performSelectorOnMainThread:@selector(taDah) withObject:nil waitUntilDone:YES];

} //END FOR LOOP

}

（void）speakAString：（NSString *）stringToSpeak { ISSpeechSynthesis * synthesis = [[ISSpeechSynthesis alloc] initWithText：stringToSpeak]; NSError *错误; if（！[综合说话：＆amp; err]）{ NSLog（@“ERROR：％@”，错误）; } self.cleanString = nil; }

通过以下方法传递值：

它说的是第一个，但后来我明白了：

Domain = com.ispeech.ispeechsdk.ErrorDomain Code = 303“SDK已经存在进行综合或识别。等待之前完成开始另一个请求。“UserInfo = 0xb54f2b0 {NSLocalizedDescription = SDK已在执行综合或承认。在开始另一个请求之前等待它完成。}

为什么操作队列不等待？

如何在传递下一个字符串之前等待iSpeech完成发言

0 个答案: