How Do I Route Audio to Speaker without using AudioSessionSetProperty?

本文介绍了如何在iOS应用中使用AVFoundation配置音频会话，包括设置音频类别、覆盖输出音频端口等关键步骤。

摘要生成于 C知道，由 DeepSeek-R1 满血版支持，前往体验 >

On each release of iOS, more of the audioSession properties are migrated to AVFoundation, so you should use those in preference whenever available.

Since iOS 6 kAudioSessionProperty_OverrideAudioRoute is represented in AVAudioSession by the method

- (BOOL) overrideOutputAudioPort:error:

Available values are AVAudioSessionPortOverrideNone and AVAudioSessionPortOverrideSpeaker

Here is an example audio session configured entirely via AVFoundation:

 - (void) configureAVAudioSession
{
   //get your app's audioSession singleton object
    AVAudioSession* session = [AVAudioSession sharedInstance];

    //error handling
    BOOL success;
    NSError* error;

    //set the audioSession category. 
    //Needs to be Record or PlayAndRecord to use audioRouteOverride:  

    success = [session setCategory:AVAudioSessionCategoryPlayAndRecord
                             error:&error];

   if (!success)  NSLog(@"AVAudioSession error setting category:%@",error);

    //set the audioSession override
    success = [session overrideOutputAudioPort:AVAudioSessionPortOverrideSpeaker
                                          error:&error];
    if (!success)  NSLog(@"AVAudioSession error overrideOutputAudioPort:%@",error);

    //activate the audio session
    success = [session setActive:YES error:&error];
    if (!success) NSLog(@"AVAudioSession error activating: %@",error);
    else NSLog(@"audioSession active");

}