android打电话自动免提

最新推荐文章于 2023-08-12 10:03:03 发布

ZhuangDongM

最新推荐文章于 2023-08-12 10:03:03 发布

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分类专栏： InCallUI，Dialer InCallUI

本文链接：https://blog.youkuaiyun.com/u012904691/article/details/68944802

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本文介绍如何通过Android系统的AudioManager及AudioSystem API实现免提模式的设置，包括更改音频输出设备为扬声器的方法，以及解决相关问题的技术细节。

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 AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
        if (audioManager.getMode() != AudioManager.MODE_IN_COMMUNICATION) {
            audioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);
        }
        try {
            Class clazz = Class.forName("android.media.AudioSystem");
            Method m = clazz.getMethod("setForceUse", new Class[]{int.class, int.class});
            m.setAccessible(true);
            m.invoke(null, 1, 1);
        } catch (ClassNotFoundException e) {
            e.printStackTrace();
        } catch (NoSuchMethodException e) {
            e.printStackTrace();
        } catch (InvocationTargetException e) {
            e.printStackTrace();
        } catch (IllegalAccessException e) {
            e.printStackTrace();
        }

        if (!audioManager.isSpeakerphoneOn()) {
            audioManager.setSpeakerphoneOn(true);
        }

在incallactivity加入

之前TelecomAdapter.getInstance().setAudioRoute(AudioState.ROUTE_SPEAKER); 并没有生效

然后在源码中把setForceUse FOR_COMMUNICATION相关的策略全部改成FORCE_SPEAKER，这样的话就可以全部电话声音都改成免提，但是一开始的并没有初始化，怀疑是一开始没有设置通信的模式的原因。所以在incallactivity加入那段话，

// device categories config for setForceUse, must match AudioSystem::forced_config
public static final int FORCE_NONE = 0;
public static final int FORCE_SPEAKER = 1;
public static final int FORCE_HEADPHONES = 2;
public static final int FORCE_BT_SCO = 3;
public static final int FORCE_BT_A2DP = 4;
public static final int FORCE_WIRED_ACCESSORY = 5;
public static final int FORCE_BT_CAR_DOCK = 6;
public static final int FORCE_BT_DESK_DOCK = 7;
public static final int FORCE_ANALOG_DOCK = 8;
public static final int FORCE_DIGITAL_DOCK = 9;
public static final int FORCE_NO_BT_A2DP = 10;
public static final int FORCE_SYSTEM_ENFORCED = 11;
public static final int FORCE_HDMI_SYSTEM_AUDIO_ENFORCED = 12;
private static final int NUM_FORCE_CONFIG = 13;
public static final int FORCE_DEFAULT = FORCE_NONE;

// usage for setForceUse, must match AudioSystem::force_use
public static final int FOR_COMMUNICATION = 0;
public static final int FOR_MEDIA = 1;
public static final int FOR_RECORD = 2;
public static final int FOR_DOCK = 3;
public static final int FOR_SYSTEM = 4;
public static final int FOR_HDMI_SYSTEM_AUDIO = 5;
private static final int NUM_FORCE_USE = 6;