根据其他答案的提示，这可能是最可靠的方法:

isEmulator = "金鱼".equals(Build.HARDWARE)

谷歌在Flutter的device-info插件中使用以下代码来确定该设备是否是模拟器:

private boolean isEmulator() {
    return (Build.BRAND.startsWith("generic") && Build.DEVICE.startsWith("generic"))
        || Build.FINGERPRINT.startsWith("generic")
        || Build.FINGERPRINT.startsWith("unknown")
        || Build.HARDWARE.contains("goldfish")
        || Build.HARDWARE.contains("ranchu")
        || Build.MODEL.contains("google_sdk")
        || Build.MODEL.contains("Emulator")
        || Build.MODEL.contains("Android SDK built for x86")
        || Build.MANUFACTURER.contains("Genymotion")
        || Build.PRODUCT.contains("sdk_google")
        || Build.PRODUCT.contains("google_sdk")
        || Build.PRODUCT.contains("sdk")
        || Build.PRODUCT.contains("sdk_x86")
        || Build.PRODUCT.contains("sdk_gphone64_arm64")
        || Build.PRODUCT.contains("vbox86p")
        || Build.PRODUCT.contains("emulator")
        || Build.PRODUCT.contains("simulator");
}

由于Genymotion的底层模拟引擎是VirtualBox，这不会很快改变，我发现以下代码是最可靠的:

   public static boolean isGenymotion() {
        return Build.PRODUCT != null && Build.PRODUCT.contains("vbox");
}

安卓id不适合我，我现在用的是:

"google_sdk".equals( Build.PRODUCT );

不知道是否有更好的方法来检测emu，但模拟器将在根目录下有init.金鱼.rc文件。

它是特定于模拟器的启动脚本，在非模拟器构建中不应该出现。

所有答案都在一个方法中

static boolean checkEmulator()
{
    try
    {
        String buildDetails = (Build.FINGERPRINT + Build.DEVICE + Build.MODEL + Build.BRAND + Build.PRODUCT + Build.MANUFACTURER + Build.HARDWARE).toLowerCase();

        if (buildDetails.contains("generic") 
        ||  buildDetails.contains("unknown") 
        ||  buildDetails.contains("emulator") 
        ||  buildDetails.contains("sdk") 
        ||  buildDetails.contains("genymotion") 
        ||  buildDetails.contains("x86") // this includes vbox86
        ||  buildDetails.contains("goldfish")
        ||  buildDetails.contains("test-keys"))
            return true;
    }   
    catch (Throwable t) {Logger.catchedError(t);}

    try
    {
        TelephonyManager    tm  = (TelephonyManager) App.context.getSystemService(Context.TELEPHONY_SERVICE);
        String              non = tm.getNetworkOperatorName().toLowerCase();
        if (non.equals("android"))
            return true;
    }
    catch (Throwable t) {Logger.catchedError(t);}

    try
    {
        if (new File ("/init.goldfish.rc").exists())
            return true;
    }
    catch (Throwable t) {Logger.catchedError(t);}

    return false;
}