iOS基于AVFoundation实现朗读文字
作者:互联网
iOS基于AVFoundation实现朗读文字
1.心理建设
众所周知AVFoundation的朗读是个智障语气,所以想不花钱就只能忍着。
2.speechManager
@import AVFoundation;
@protocol TJSpeechManagerDelegate <NSObject>
@optional
- (void)didStartSpeechUtterance:(AVSpeechUtterance*)utterance;
- (void)didFinishSpeechUtterance:(AVSpeechUtterance*)utterance;
- (void)didPauseSpeechUtterance:(AVSpeechUtterance*)utterance;
- (void)didCancelSpeechUtterance:(AVSpeechUtterance*)utterance;
- (void)willSpeakRangeOfSpeechString:(NSRange)characterRange utterance:(AVSpeechUtterance *)utterance;
- (void)needRepeatSpeech:(AVSpeechUtterance *)utterance;
@end
@interface TJSpeechManager : NSObject <AVSpeechSynthesizerDelegate>
@property (nonatomic, strong) AVSpeechSynthesizer *avSpeech;
@property (nonatomic, strong) AVSpeechUtterance *speechUtt;
@property (nonatomic, assign) id <TJSpeechManagerDelegate> delegate;
- (void)setSpeechContent:(NSString *)content;
- (void)pauseSpeech;
- (void)beginSpeech;
- (void)continueSpeech;
- (void)endSpeech;
@end
#import "TJSpeechManager.h"
@implementation TJSpeechManager
- (void)setSpeechContent:(NSString *)content {
AVSpeechUtterance *speechUtt = [AVSpeechUtterance speechUtteranceWithString:content];
speechUtt.rate = 0.5;
speechUtt.pitchMultiplier = 1;
//设置音量,[0-1] 默认 = 1
speechUtt.volume = 1;
//读一段前的停顿时间
speechUtt.preUtteranceDelay = 1;
//读完一段后的停顿时间
speechUtt.postUtteranceDelay = 1;
AVSpeechSynthesisVoice *voice = [AVSpeechSynthesisVoice voiceWithLanguage:@"zh-CN"];
speechUtt.voice = voice;
self.speechUtt = speechUtt;
}
- (void)beginSpeech {
//这里需要注意一下,一个avspeech对象只能播放一次,同一个对象中途不能重新播放。
AVSpeechSynthesizer *avSpeech = [[AVSpeechSynthesizer alloc] init];
avSpeech.delegate = self;
[avSpeech speakUtterance:self.speechUtt];
self.avSpeech = avSpeech;
}
- (void)pauseSpeech {
[self.avSpeech pauseSpeakingAtBoundary:AVSpeechBoundaryImmediate];
}
- (void)continueSpeech {
if(self.avSpeech.isPaused) {
[self.avSpeech continueSpeaking];
[NSThread sleepForTimeInterval:0.25f];
}
}
- (void)endSpeech {
if(self.avSpeech.isSpeaking) {
[self.avSpeech stopSpeakingAtBoundary:AVSpeechBoundaryImmediate];
[NSThread sleepForTimeInterval:0.25f];
}
}
//代理主要是返回给controller,用来和UI交互
#pragma mark - AVSpeechSynthesizerDelegate;
- (void)speechSynthesizer:(AVSpeechSynthesizer*)synthesizer didStartSpeechUtterance:(AVSpeechUtterance*)utterance{
NSLog(@"---开始播放");
if(self.delegate && [self.delegate respondsToSelector:@selector(didStartSpeechUtterance:)]) {
[self.delegate didStartSpeechUtterance:utterance];
}
}
- (void)speechSynthesizer:(AVSpeechSynthesizer*)synthesizer didFinishSpeechUtterance:(AVSpeechUtterance*)utterance{
NSLog(@"---完成播放");
if(self.delegate && [self.delegate respondsToSelector:@selector(didFinishSpeechUtterance:)]) {
[self.delegate didFinishSpeechUtterance:utterance];
}
}
- (void)speechSynthesizer:(AVSpeechSynthesizer*)synthesizer didPauseSpeechUtterance:(AVSpeechUtterance*)utterance{
NSLog(@"---播放中止");
if(self.delegate && [self.delegate respondsToSelector:@selector(didPauseSpeechUtterance:)]) {
[self.delegate didPauseSpeechUtterance:utterance];
}
}
- (void)speechSynthesizer:(AVSpeechSynthesizer*)synthesizer didContinueSpeechUtterance:(AVSpeechUtterance*)utterance{
NSLog(@"---恢复播放");
}
- (void)speechSynthesizer:(AVSpeechSynthesizer*)synthesizer didCancelSpeechUtterance:(AVSpeechUtterance*)utterance{
NSLog(@"---播放取消");
if(self.delegate && [self.delegate respondsToSelector:@selector(didCancelSpeechUtterance:)]) {
[self.delegate didCancelSpeechUtterance:utterance];
}
}
- (void)speechSynthesizer:(AVSpeechSynthesizer *)synthesizer willSpeakRangeOfSpeechString:(NSRange)characterRange utterance:(AVSpeechUtterance *)utterance {
if(self.delegate && [self.delegate respondsToSelector:@selector(willSpeakRangeOfSpeechString:utterance:)]) {
[self.delegate willSpeakRangeOfSpeechString:characterRange utterance:utterance];
}
}
@end
3.使用范例
//分页控制器获取到当前页内容
-(void)pageReadViewControllerSpeechContent:(NSString *)content
{
//先停止语音 防止用户翻页造成声音重叠
[self.speechManager endSpeech];
//当期是否开启了朗读功能
if (self.isSpeechNextPage == YES ) {
//内容不为空 代表可以朗读下一页
if ( content && content.length > 0) {
//设置朗读内容
[self.speechManager setSpeechContent:content];
//开始朗读
[self.speechManager beginSpeech];
}else{
self.isSpeechNextPage = NO;
[self.speechManager endSpeech];
}
}
}
///朗读按钮开启
-(void)readMenuDidOpenSpeechRead
{
self.isSpeechNextPage = YES;
//用于刷新当前页内容 从而调用pageReadViewControllerSpeechContent
[self speechNextPage:self.book.page];
}
//用户关闭朗读
-(void)readMenuDidCloseSpeechRead
{
[self.speechManager pauseSpeech];
self.isSpeechNextPage = NO;
}
//当前页内容读完
- (void)didFinishSpeechUtterance:(AVSpeechUtterance *)utterance
{
//我这里的逻辑是用于控制翻页还是下一章
//下一章或者下一页都会重绘pageViewControl内容 从而继续响应 pageReadViewControllerSpeechContent 的回调代理
if ([TJReadRecordManager recordWithBookId:self.book.bookId].page + 2 > [TJReadRecordManager recordWithBookId:self.book.bookId].chapter.pageModels.count) {
[self readMenuDidChangeChapter:YES];
}else{
[self speechNextPage:[TJReadRecordManager recordWithBookId:self.book.bookId].page + 1];
}
}
4.简单使用
如果各位想简单应用一下
初始化 manager
-(TJSpeechManager *)speechManager
{
if (!_speechManager) {
_speechManager = [[TJSpeechManager alloc]init];
_speechManager.delegate = self;
}
return _speechManager;
}
然后直接开始朗读就行了
[self.speechManager setSpeechContent:@"想说的话"];
//开始朗读
[self.speechManager beginSpeech];
5.退出
退出页面记得停止播放
-(void)dealloc
{
self.speechManager.delegate = nil;
[self.speechManager endSpeech];
}
附上APP地址: 一阅阅读有想看小说的小伙伴可以试下 支持换源 支持自定义书源
标签:utterance,void,iOS,AVSpeechUtterance,AVFoundation,speechManager,delegate,朗读,self 来源: https://www.cnblogs.com/Apolla/p/15010284.html