Forcing sound output through speaker in Android

Is there a way in Android to force output through the phone speaker, even if a headphone is plugged into the jack? I know there has to be a way because when you are talking on the phone, you can put someone on speaker phone, even if there is headphon开发者_开发技巧es plugged into the jack.

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You can change this system-wide using the AudioManager.setSpeakerphoneOn method.

I don't believe you can set this for a particular MediaPlayer/AudioTrack/SoundPool instance, but depending on your use case, you might actually be looking to set your audio stream type using MediaPlayer.setAudioStreamType or an equivalent for other audio playback classes.

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Sound output through speaker

AudioManager m_amAudioManager = 
        AudioManager)getSystemService(Context.AUDIO_SERVICE);  

m_amAudioManager.setMode(AudioManager.MODE_NORMAL); 
m_amAudioManager.setSpeakerphoneOn(true); 

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This worked for me

First, I Added permissions in Manifest.xml

<uses-permission android:name="android.permission.MODIFY_AUDIO_SETTINGS" />

Then, I used this code

AudioManager m_amAudioManager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);

    m_amAudioManager.setMode(AudioManager.MODE_RINGTONE | AudioManager.MODE_IN_CALL);
    m_amAudioManager.setSpeakerphoneOn(true);