【发布时间】:2013-03-26 17:51:05
【问题描述】:
我正在开发一个应用程序,我想在 SpeechSynthesizer.SpeakTextAsync 运行之间暂停并从那里恢复。
await synthesizer.SpeakTextAsync(text);
var stop = true;时停止阅读
【问题讨论】:
标签: c# windows-phone-8 speech-synthesis speechsynthesizer
我正在开发一个应用程序,我想在 SpeechSynthesizer.SpeakTextAsync 运行之间暂停并从那里恢复。
await synthesizer.SpeakTextAsync(text);
var stop = true;时停止阅读
【问题讨论】:
标签: c# windows-phone-8 speech-synthesis speechsynthesizer
不久前有人在这里发帖,同时我刷新了页面,阅读了他的答案,看到了通知并再次刷新了页面,答案消失了。但无论谁发帖,他都是救命稻草。它让我印象深刻,我最终创造了这个。
String text; // your text to read out loud
String[] parts = text.Split(' ');
int max = parts.Length;
int count = 0;
private String makeSSML() {
if (count == max) {
count= 0;
}
String s = "<speak version=\"1.0\" ";
s += "xmlns=\"http://www.w3.org/2001/10/synthesis\" xml:lang=\"en-US\">";
for (int i = count; i < max; i++)
{
s += parts[i];
s += "<mark name=\"anything\"/>";
}
s += "<mark name=\"END\"/>";
s += "</speak>";
return s;
}
private void playIT(){
synth = new SpeechSynthesizer();
synth.BookmarkReached += synth_BookmarkReached;
synth.SpeakSsmlAsync(makeSSML());
}
private void synth_BookmarkReached(object sender, SpeechBookmarkReachedEventArgs e)
{
count++;
if (e.Bookmark == "END") {
synth.Dispose();
}
}
private void Pause_Click(object sender, RoutedEventArgs e)
{
synth.Dispose();
}
谢谢大佬,你的回答给了我灵感。
【讨论】:
好吧,根据文档,当您调用 CancellAll 时,您正在取消异步执行的任务。根据合同,这会导致OperationCancelledException 被抛出。这意味着无论您在何处调用 SpeakTextAsync、SpeakSsmlAsync 或 SpeakSsmlFromUriAsync,都必须在这些调用周围加上 try/catch 语句,以防止此异常未被捕获。
示例:
private static SpeechSynthesizer synth;
public async static Task<SpeechSynthesizer> SpeechSynth(string dataToSpeak)
{
synth = new SpeechSynthesizer();
IEnumerable<VoiceInformation> englishVoices = from voice in InstalledVoices.All
where voice.Language == "en-US"
&& voice.Gender.Equals(VoiceGender.Female)
select voice;
if (englishVoices.Count() > 0)
{
synth.SetVoice(englishVoices.ElementAt(0));
}
await synth.SpeakTextAsync(dataToSpeak);
return synth;
}
public static void CancelSpeech()
{
synth.CancelAll();
}
现在在您想要的地方拨打SpeechSynth("Some Data to Speak"),当您想取消它时,只需拨打CancelSpeech()。
完成了!享受...!
【讨论】: