iOS 如何实现 语音朗读

  
在IOS开发中 我们可以使用 AVSpeechSynthesizer  和  AVSpeechUtterance
 这两个类 实现简单的语音朗读   具体事例代码如下 

    AVSpeechSynthesizer *synthesizer = [[AVSpeechSynthesizer
alloc]
init];
   
AVSpeechUtterance *utterance =

    [AVSpeechUtterance
speechUtteranceWithString:@"Wow, I have such a nice voice!"];

    utterance.rate =
AVSpeechUtteranceMaximumSpeechRate / 4.0f;

    utterance.voice = [AVSpeechSynthesisVoice
voiceWithLanguage:@"en-US"];
// defaults to your system language
    [synthesizer
speakUtterance:utterance];