從json數據連續轉換文本到語音

Question

我正在設計一個需要文本到語音的應用程序。我正在使用發佈的here將文本轉換爲語音的庫。我必須從Json url中檢索文本，並將這些值傳遞給文本到語音。我能夠檢索JSON數據並將其轉換爲文本到語音使用下面的代碼ObjectatIndex 0 ...

SBJSON *json = [[SBJSON alloc]init]; 
fliteEngine = [[FliteTTS alloc] init]; 
NSURLRequest *request = [NSURLRequest requestWithURL:[NSURL URLWithString:@"http://www.sampleurl.txt"]]; 
NSData *response = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil]; 
NSString *jsonstring = [[NSString alloc]initWithData:response encoding:NSUTF8StringEncoding]; 

NSArray *asanasList = [json objectWithString:jsonstring error:nil]; 
NSArray *asanas =[asanasList objectForKey:@"yogagurubackpain"]; 


for(NSDictionary *test in asanas) 
{ 

    UrlValues *myasanas = [[UrlValues alloc]init]; 
    myasanas.asanatitle = [test objectForKey:@"asanatitle"]; 
    myasanas.asanatranscript = [test objectForKey:@"asanatranscript"]; 
    myasanas.asanapicture = [test objectForKey:@"asanapicture"]; 
    [data.yoga addObject:myasanas]; 
    [myasanas release]; 
} 


UrlValues *asana=[[data yoga]objectAtIndex:0]; 
self.AsanaName.text = [asana asanatitle]; 
self.AsanaTranscript.text = [asana asanatranscript]; 

NSString *imageUrl = [asana asanapicture]; 
NSString* mapUrl = [imageUrl stringByReplacingPercentEscapesUsingEncoding:NSASCIIStringEncoding]; 
NSData* imageData = [[NSData alloc]initWithContentsOfURL:[NSURL URLWithString:mapUrl]]; 
UIImage* image = [[UIImage alloc] initWithData:imageData]; 
self.AsanaImage.image = image; 


NSString *speak = self.AsanaTranscript.text; 
[fliteEngine setVoice:@"cmu_us_rms"]; 
[fliteEngine speakText:speak]; 
[fliteEngine setPitch:100.0 variance:11.0 speed:0.4]; 
    [imageData release]; 
    [image release]; 

[jsonstring release]; 
[json release]; 

現在我的問題是我怎麼能去到下一個對象播放結束後自動第一個。該過程必須爲所有對象繼續。相應的圖像等必須在第一個文本到語音完成後在頁面上加載... Plz幫助我...

Answer 1

看着鏈接庫的來源，它看起來像你將不得不侵入FliteTTS.m的方法。如果您查看源代碼，則使用AVAudioPlayer播放生成的WAV文件。它也將自己設置爲音頻播放器的代表。如果您實施audioPlayerDidFinishPlaying:successfully:委託方法並在被調用時播放下一個塊，則應該可以具有半連續的文本到語音流。