1.添加类库AVFoundation.framework

2.引入

#import <AVFoundation/AVFoundation.h>

3.定义属性

@property (nonatomic,strong) AVSpeechSynthesizer *spee;

4.对其进行懒加载操作，并引入协议 < AVSpeechSynthesizerDelegate >

-(AVSpeechSynthesizer *)spee{
    if (!_spee) {
        _spee = [AVSpeechSynthesizer new];
        _spee.delegate = self;
    }
    return _spee;
}

5.转化为语音

AVSpeechUtterance *utt = [[AVSpeechUtterance alloc]initWithString:@“填写读取的内容”];
            utt.voice = [AVSpeechSynthesisVoice voiceWithLanguage:@"zh_CN"];
            [self.spee speakUtterance:utt];