AVSpeechSynthesizer在后台模式下 [英] AVSpeechSynthesizer in background mode

问题描述

当我的iOS应用处于后台模式时，我无法使iOS 7 AVSpeechSynthesizer 正常工作。我已将 App播放音频键添加到应用程序支持的后台模式，但我仍无法使其正常工作。

I can't get the iOS 7 AVSpeechSynthesizer to work when my iOS app is in background mode. I have added the "App plays audio" key to the app's supported background modes, but I still can't get it to work.

我还研究了用 AVSpeechSynthesizer 话语创建 AVMutableCompositionTrack 的可能性，然后以某种方式与播放器一起播放可以在后台运行 - 但没有运气。

I have also investigated the possibility of creating an AVMutableCompositionTrack, with an AVSpeechSynthesizer utterance, and then somehow play it with a player that would be able to run in the background - but with no luck.

在使用 AVSpeechSynthesizer 在后台吗？

推荐答案

1. 您必须在后台模式中设置Audio and AirPlay 。


2. 您必须配置音频会话：

    NSError *error = NULL;
    AVAudioSession *session = [AVAudioSession sharedInstance];
    [session setCategory:AVAudioSessionCategoryPlayback error:&error];
    if(error) {
        // Do some error handling
    }
    [session setActive:YES error:&error];
    if (error) {
        // Do some error handling
    }

这篇关于AVSpeechSynthesizer在后台模式下的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！