1.导入导入 AVFoundation框架
2.导入头文件#import<AVFoundation/AVFoundation.h>
AVSpeechSynthesizerDelegate 实现文字转语音需要代理方法 用来控制声音
IOS7包含了一组可以用来合成的声音的嗓音，你可以自定义多种嗓音来合成。
"[AVSpeechSynthesisVoice 0x978a0b0] Language: th-TH",
"[AVSpeechSynthesisVoice 0x977a450] Language: pt-BR",
"[AVSpeechSynthesisVoice 0x977a480] Language: sk-SK",
"[AVSpeechSynthesisVoice 0x978ad50] Language: fr-CA",
"[AVSpeechSynthesisVoice 0x978ada0] Language: ro-RO",
"[AVSpeechSynthesisVoice 0x97823f0] Language: no-NO",
"[AVSpeechSynthesisVoice 0x978e7b0] Language: fi-FI",
"[AVSpeechSynthesisVoice 0x978af50] Language: pl-PL",
"[AVSpeechSynthesisVoice 0x978afa0] Language: de-DE",
"[AVSpeechSynthesisVoice 0x978e390] Language: nl-NL",
"[AVSpeechSynthesisVoice 0x978b030] Language: id-ID",
"[AVSpeechSynthesisVoice 0x978b080] Language: tr-TR",
"[AVSpeechSynthesisVoice 0x978b0d0] Language: it-IT",
"[AVSpeechSynthesisVoice 0x978b120] Language: pt-PT",
"[AVSpeechSynthesisVoice 0x978b170] Language: fr-FR",
"[AVSpeechSynthesisVoice 0x978b1c0] Language: ru-RU",
"[AVSpeechSynthesisVoice 0x978b210]Language: es-MX",
"[AVSpeechSynthesisVoice 0x978b2d0] Language: zh-HK",中文(香港) 粤语
"[AVSpeechSynthesisVoice 0x978b320] Language: sv-SE",
"[AVSpeechSynthesisVoice 0x978b010] Language: hu-HU",
"[AVSpeechSynthesisVoice 0x978b440] Language: zh-TW", 中文(台湾)
"[AVSpeechSynthesisVoice 0x978b490] Language: es-ES",
"[AVSpeechSynthesisVoice 0x978b4e0] Language: zh-CN",汉语
"[AVSpeechSynthesisVoice 0x978b530] Language: nl-BE",
"[AVSpeechSynthesisVoice 0x978b580] Language: en-GB", 英语(英国)
"[AVSpeechSynthesisVoice 0x978b5d0] Language: ar-SA",
"[AVSpeechSynthesisVoice 0x978b620] Language: ko-KR",
"[AVSpeechSynthesisVoice 0x978b670] Language: cs-CZ",
"[AVSpeechSynthesisVoice 0x978b6c0] Language: en-ZA",
"[AVSpeechSynthesisVoice 0x978aed0] Language: en-AU",
"[AVSpeechSynthesisVoice 0x978af20] Language: da-DK",
"[AVSpeechSynthesisVoice 0x978b810] Language: en-US",
"[AVSpeechSynthesisVoice 0x978b860] Language: en-IE",
"[AVSpeechSynthesisVoice 0x978b8b0] Language: hi-IN",
"[AVSpeechSynthesisVoice 0x978b900] Language: el-GR",
"[AVSpeechSynthesisVoice 0x978b950] Language: ja-JP"
进入iPhone的 设置 > 通用 > 辅助功能 > 语音，开启“朗读所选项”，并在“嗓音”中选择“中文（台湾）”
代码实现如下
#import "ViewController.h"
#import<AVFoundation/AVFoundation.h>
@interface ViewController ()<AVSpeechSynthesizerDelegate>
@property (nonatomic,strong)UIButton *swicthBut;//按钮
@property (nonatomic,strong)UITextField *textField;//文字输入框
@property(nonatomic,strong)AVSpeechSynthesizer*speechSynthesizer;//实现文本到语音
@end
@implementation ViewController
- (void)viewDidLoad {
[super viewDidLoad];
// Do any additional setup after loading the view, typically from a nib.
self.title=@"文字转语音";
self.view.backgroundColor = [UIColor whiteColor];
[self.viewaddSubview:self.swicthBut];
[self.viewaddSubview:self.textField];
}
#pragma mark------开始文本转语音
- (void)textIntoSpeechSynthesizer{
if(self.textField.text.length>0) {
AVSpeechUtterance *speechUtterance = [[AVSpeechUtterance alloc]initWithString:self.textField.text];
speechUtterance.voice= [AVSpeechSynthesisVoicevoiceWithLanguage:@"zh-CN"];//国家语言
speechUtterance.rate=0.4f;//声速
speechUtterance.pitchMultiplier=0.8;// 音调调节[0.5 - 2] Default = 1
speechUtterance.volume=0.3;//音量调节 调节范围 ：[0-1] 默认是 ：1
[self.speechSynthesizerspeakUtterance:speechUtterance];//开始播放
}else{
NSLog(@"请输入文字");
}
}
#pragma mark---实现文本到语音
-(AVSpeechSynthesizer*)speechSynthesizer{
if (!_speechSynthesizer) {
_speechSynthesizer = [[AVSpeechSynthesizer alloc]init];
_speechSynthesizer.delegate = self;//设置代理控制声音的暂停/继续
}
return _speechSynthesizer;
}
#pragma mark---文字输入
- (UITextField*)textField{
if (!_textField) {
_textField= [[UITextFieldalloc]init];
_textField.frame = CGRectMake(0, 140, [UIScreen mainScreen].bounds.size.width, 100);
_textField.placeholder=@"请输入文字";
_textField.textColor = [UIColor blackColor];
}
return _textField;
}
#pragma mark----开关
- (UIButton*)swicthBut{
if (!_swicthBut) {
_swicthBut= [[UIButtonalloc]init];
_swicthBut.frame=CGRectMake(50,100,80,30);
_swicthBut.titleLabel.textAlignment = NSTextAlignmentCenter;
[_swicthBut setTitleColor:[UIColor orangeColor] forState:UIControlStateNormal];
[_swicthBut addTarget:self action:@selector(switchOn:) forControlEvents:UIControlEventTouchUpInside];
[_swicthBut setTitle:@"开始" forState:UIControlStateNormal];
}
return _swicthBut;
}
- (void)switchOn:(UIButton*)sender{
sender.selected= !sender.selected;
if(!(self.textField.text.length>0)) {
NSLog(@"请输入文字");
}
else if(sender.isSelected) {
[self textIntoSpeechSynthesizer];
[_swicthBut setTitle:@"暂停" forState:UIControlStateNormal];
}else{
[self.speechSynthesizer continueSpeaking];//停止播放
//[self.speechSynthesizer pauseSpeakingAtBoundary:AVSpeechBoundaryWord];//暂停
[_swicthBut setTitle:@"开始" forState:UIControlStateNormal];
}
}
#pragma mark------AVSpeechSynthesizerDelegate
//开始
- (void)speechSynthesizer:(AVSpeechSynthesizer*)synthesizer didStartSpeechUtterance:(AVSpeechUtterance*)utterance{
}
//完成
- (void)speechSynthesizer:(AVSpeechSynthesizer*)synthesizer didFinishSpeechUtterance:(AVSpeechUtterance*)utterance{
}
//暂停
- (void)speechSynthesizer:(AVSpeechSynthesizer*)synthesizer didPauseSpeechUtterance:(AVSpeechUtterance*)utterance{
}
//恢复
- (void)speechSynthesizer:(AVSpeechSynthesizer*)synthesizer didContinueSpeechUtterance:(AVSpeechUtterance*)utterance{
}
//取消
- (void)speechSynthesizer:(AVSpeechSynthesizer*)synthesizer didCancelSpeechUtterance:(AVSpeechUtterance*)utterance{
}
//将要说的某段话
-(void)speechSynthesizer:(AVSpeechSynthesizer*)synthesizer willSpeakRangeOfSpeechString:(NSRange)characterRange utterance:(AVSpeechUtterance*)utterance{
}
- (void)didReceiveMemoryWarning {
[super didReceiveMemoryWarning];
// Dispose of any resources that can be recreated.
}
@end
