Android检测手机是否插入/链接耳机

首先添加权限

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

Android 6.0以后使用device.getType()来判断手机是否插入耳机或者链接蓝牙耳机

private boolean checkIsWired() {
        AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            AudioDeviceInfo[] devices = audioManager.getDevices(AudioManager.GET_DEVICES_OUTPUTS);
            for (AudioDeviceInfo device : devices) {
                int deviceType = device.getType();
                if (deviceType == AudioDeviceInfo.TYPE_WIRED_HEADSET
                        || deviceType == AudioDeviceInfo.TYPE_WIRED_HEADPHONES
                        || deviceType == AudioDeviceInfo.TYPE_BLUETOOTH_A2DP
                        || deviceType == AudioDeviceInfo.TYPE_BLUETOOTH_SCO) {
                    return true;
                }
            }
        } else {
            return audioManager.isWiredHeadsetOn() || audioManager.isBluetoothScoOn() || audioManager.isBluetoothA2dpOn();
        }
        return false;
    }