Android: VIVO手机setSpeakerphoneOn p无效，无法切换speaker的问题

setSpeakerphoneOn 方法可以使语音和通话能够强制从手机的扬声器输出，不过在测试了众多手机在调用了这个API之后都可以，唯独有一款VIVO手机不可以：

.小米6X（9.0）
.Samsung s7e（7.0）
.Google piexl 2xl（10.0）
.诺基亚x7（9.0）
.华为nova3e（8.0）
.小米6（8.0）
.锤子T2（5.1.）
.HTC M8（6.0）
.小米4（4.4.）
.华硕zenfone3（8.0）
.Samsung note8（7.1.）
.LG G6（7.0）
.HTC M10（8.0）
.LG G5（7.0）
.一加5T（7.1.）
.华为荣耀v10（9.0）
.MEIZU Note2（5.1）
--》以上17款均pass
.vivo x20p（8.0）--》Fail

解决方法：

 final static int FOR_MEDIA = 1;
    final static int FORCE_NONE = 0;
    final static int FORCE_SPEAKER = 1;
    final static int FORCE_HEADPHONES = 2;

    public void switchSpeaker() {
        if (RomUtil.isVivo()) {
            Log.i(TAG, "switchSpeaker: This is vivo phone");
            try {
                Class audioSystemClass = Class.forName("android.media.AudioSystem");
                Method setForceUse = audioSystemClass.getMethod("setForceUse", int.class, int.class);
                setForceUse.invoke(null, FOR_MEDIA, FORCE_SPEAKER);
            } catch (Exception e) {
                e.printStackTrace();
            }
        } else {
            Log.i(TAG, "switchSpeaker: others");

            mAudioManager.setMicrophoneMute(false);
            mAudioManager.setSpeakerphoneOn(true);//使用扬声器外放，即使已经插入耳机
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB){
                mAudioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);
            } else {
                mAudioManager.setMode(AudioManager.MODE_IN_CALL);
            }
            setVolumeControlStream(AudioManager.STREAM_MUSIC);
        }
    }

    public void switchHeadset() {
        if (RomUtil.isVivo()) {
            Log.i(TAG, "switchSpeaker: This is vivo phone");
            try {
                Class audioSystemClass = Class.forName("android.media.AudioSystem");
                Method setForceUse = audioSystemClass.getMethod("setForceUse", int.class, int.class);
                setForceUse.invoke(null, FOR_MEDIA, FORCE_HEADPHONES);
            } catch (Exception e) {
                e.printStackTrace();
            }
        } else {
            Log.i(TAG, "switchSpeaker: others");
            mAudioManager.setMode(AudioManager.MODE_IN_COMMUNICATION);
            mAudioManager.stopBluetoothSco();
            mAudioManager.setBluetoothScoOn(false);
            mAudioManager.setSpeakerphoneOn(false);
        }
    }

RomUtil.java

package com.hxzk.som.base.utils;

import android.os.Build;
import android.text.TextUtils;
import android.util.Log;

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;

/**
 * Created by HaiyuKing
 * Used 判断手机ROM,检测ROM是MIUI、EMUI还是Flyme
 * 参考资料：https://www.jianshu.com/p/ba9347a5a05a
 */
public class RomUtil {
    private static final String TAG = "Rom";

    public static final String ROM_MIUI = "MIUI";
    public static final String ROM_EMUI = "EMUI";
    public static final String ROM_FLYME = "FLYME";
    public static final String ROM_OPPO = "OPPO";
    public static final String ROM_SMARTISAN = "SMARTISAN";
    public static final String ROM_VIVO = "VIVO";
    public static final String ROM_QIKU = "QIKU";

    private static final String KEY_VERSION_MIUI = "ro.miui.ui.version.name";
    private static final String KEY_VERSION_EMUI = "ro.build.version.emui";
    private static final String KEY_VERSION_OPPO = "ro.build.version.opporom";
    private static final String KEY_VERSION_SMARTISAN = "ro.smartisan.version";
    private static final String KEY_VERSION_VIVO = "ro.vivo.os.version";

    private static String sName;
    private static String sVersion;

    //华为
    public static boolean isEmui() {
        return check(ROM_EMUI);
    }
    //小米
    public static boolean isMiui() {
        return check(ROM_MIUI);
    }
    //vivo
    public static boolean isVivo() {
        return check(ROM_VIVO);
    }
    //oppo
    public static boolean isOppo() {
        return check(ROM_OPPO);
    }
    //魅族
    public static boolean isFlyme() {
        return check(ROM_FLYME);
    }
    //360手机
    public static boolean is360() {
        return check(ROM_QIKU) || check("360");
    }

    public static boolean isSmartisan() {
        return check(ROM_SMARTISAN);
    }

    public static String getName() {
        if (sName == null) {
            check("");
        }
        return sName;
    }

    public static String getVersion() {
        if (sVersion == null) {
            check("");
        }
        return sVersion;
    }

    public static boolean check(String rom) {
        if (sName != null) {
            return sName.equals(rom);
        }

        if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_MIUI))) {
            sName = ROM_MIUI;
        } else if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_EMUI))) {
            sName = ROM_EMUI;
        } else if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_OPPO))) {
            sName = ROM_OPPO;
        } else if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_VIVO))) {
            sName = ROM_VIVO;
        } else if (!TextUtils.isEmpty(sVersion = getProp(KEY_VERSION_SMARTISAN))) {
            sName = ROM_SMARTISAN;
        } else {
            sVersion = Build.DISPLAY;
            if (sVersion.toUpperCase().contains(ROM_FLYME)) {
                sName = ROM_FLYME;
            } else {
                sVersion = Build.UNKNOWN;
                sName = Build.MANUFACTURER.toUpperCase();
            }
        }
        return sName.equals(rom);
    }

    public static String getProp(String name) {
        String line = null;
        BufferedReader input = null;
        try {
            Process p = Runtime.getRuntime().exec("getprop " + name);
            input = new BufferedReader(new InputStreamReader(p.getInputStream()), 1024);
            line = input.readLine();
            input.close();
        } catch (IOException ex) {
            Log.e(TAG, "Unable to read prop " + name, ex);
            return null;
        } finally {
            if (input != null) {
                try {
                    input.close();
                } catch (IOException e) {
                    e.printStackTrace();
                }
            }
        }
        return line;
    }
}

参考链接：

1. VIVO官网：音频类AudioManager接口使用规范

2. Android 4.3之系统setSpeakPhoneOn 实现Audio ouput path 切换

3. how to turn speaker on/off programmatically in android 4.0