Question

我尝试了推荐的

setSpeakerphoneOn(true)

和未经推荐的

AudioSystem.setForceUse(AudioSystem.FOR_MEDIA, AudioSystem.FORCE_SPEAKER);

但两项都没有奏效。

我试过

setWiredHeadsetOn(false)

但这也不起作用，并且已弃用。

有趣的是，

isSpeakerphoneOn()

报告为真，

isWiredHeadsetOn()

此外，还设置了以下权限

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

Answer 1

答案结果如下，提示来自 Android - Getting audio to play through earpiece

audioManager.setMode(AudioManager.MODE_IN_CALL);
audioManager.setSpeakerphoneOn(true);

忽略setRouting，它在APK＆gt;中没有任何作用10.忽略有关setMode的注释。忽略有关setWiredHeadsetOn的注释。确保您拥有MODIFY_AUDIO权限。

Answer 2

感谢此处的一些评论，经过一番搜索，我终于找到了如何做到这一点。

按下按钮时会调用下面的代码。它设置用于在呼叫时激活扬声器的音频，然后拨打该号码。

请注意我的代码中有关权限的评论。

buttonRep.setOnClickListener(new OnClickListener() {
    @Override
    public void onClick(View v) {
        //1) we need to detect once the call has been established
        //Note : this requires READ_PHONE_STATE permission in your manifest

        final TelephonyManager tm = (TelephonyManager) getSystemService(Context.TELEPHONY_SERVICE);

        tm.listen(new PhoneStateListener()
        {
            @SuppressWarnings("unused")
            @Override
            public void onCallStateChanged (int state, String incomingNumber)
            {
                if(state == TelephonyManager.CALL_STATE_OFFHOOK) //Here we are
                {
                    //2) we switch sound to speakers
                    //Note : this requires MODIFY_AUDIO_SETTINGS permission in your manifest
                    AudioManager am = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
                    am.setMode(AudioManager.MODE_IN_CALL);
                    am.setSpeakerphoneOn(true);
                    int i = state;

                    //3) we don't need this call listener anymore so we "destroy it"
                    tm.listen(this, PhoneStateListener.LISTEN_NONE);
                }
            }
        }

        , PhoneStateListener.LISTEN_CALL_STATE);

        //4) we are ready to place our call  now
        //Note : this requires CALL_PHONE permission in your manifest
        Intent action = new Intent();
        action.setAction(Intent.ACTION_CALL);
        action.setData(Uri.parse("tel:660")); //660 is my answering-machine number :)
        MainActivity.this.startActivity(action);
    }
});

Answer 3

试试这个：

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

    IntentFilter iFilter = new IntentFilter(Intent.ACTION_HEADSET_PLUG);
    Intent iStatus = getApplicationContext().registerReceiver(null, iFilter);
    boolean isHeadsetOn = false;

    if (iStatus != null) {
        isHeadsetOn = iStatus.getIntExtra("state", 0) == 1;
    }
    if(mAudioManager.isWiredHeadsetOn() || isHeadsetOn)
    {
        //When headphones are plugged
        mAudioManager.setMode(AudioManager.MODE_CURRENT);
        mAudioManager.setSpeakerphoneOn(true);
    }else { 
        //When headphones are not plugged
        mAudioManager.setMode(AudioManager.MODE_IN_CALL);
        mAudioManager.setSpeakerphoneOn(true);
    }

Answer 4

尝试这样做：

AudioManager manager = (AudioManager)getSystemService(Context.AUDIO_SERVICE);
if(manager.isWiredHeadsetOn())
{
    manager.setWiredHeadsetOn(false);
    manager.setSpeakerphoneOn(true); 
    manager.setRouting(AudioManager.MODE_CURRENT, AudioManager.ROUTE_SPEAKER, AudioManager.ROUTE_ALL);  
    manager.setMode(AudioManager.MODE_CURRENT); 
}

您需要此权限：

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

Answer 5

这对我有用

首先，我在Manifest.xml中添加了权限

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

然后，我用了这个：

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

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

插入耳机时有没有办法强制通过扬声器播放音频？

5 个答案: