Detect notch on Android devices for Huawei, Oppo, Vivo

NotchUtil.java

package com.actgames.fci.util;

import android.app.Activity;

import com.unity3d.player.UnityPlayer;

import java.lang.reflect.Method;

/**
 * Created by mofei on 2018/5/11.
 */

public class NotchUtil {
    public static int hasDeviceNotch() {
        // Use oppo official API to detect notch
        // Ref https://open.oppomobile.com/service/message/detail?id=61876
        if (hasSystemFeature("com.oppo.feature.screen.heteromorphism")) {
            return 0;
        }
        if (hasNotchInHuawei()) {
            return getWidthInHuawei();
        }
        if (hasNotchInVivo()) {
            return 0;
        }

        return -1;
    }

    static int getWidthInHuawei() {
        int[] ret = new int[]{0, 0};
        try {
            final Activity activity = UnityPlayer.currentActivity;
            if (activity == null) return 0;
            ClassLoader cl = activity.getClassLoader();
            Class HwNotchSizeUtil = cl.loadClass("com.huawei.android.util.HwNotchSizeUtil");
            Method get = HwNotchSizeUtil.getMethod("getNotchSize");
            ret = (int[]) get.invoke(HwNotchSizeUtil);
            return ret[1]; // [0]值为刘海宽度int；[1]值为刘海高度
        } catch (Exception e) {
            //ignored
        }
        return 0;
    }


    static boolean hasSystemFeature(String feature) {
        final Activity activity = UnityPlayer.currentActivity;
        try {
            if (activity != null) {
                return activity.getPackageManager().hasSystemFeature(feature);
            }
        } catch (Exception e) {
            //ignored
        }
        return false;
    }

    /**
     * Only work in Huawei devices.
     *
     * @return True if there is notch
     */
    static boolean hasNotchInHuawei() {
        boolean hasNotch = false;
        try {
            final Activity activity = UnityPlayer.currentActivity;
            if (activity == null) return false;
            ClassLoader cl = activity.getClassLoader();
            Class HwNotchSizeUtil = cl.loadClass("com.huawei.android.util.HwNotchSizeUtil");
            Method get = HwNotchSizeUtil.getMethod("hasNotchInScreen");
            hasNotch = (boolean) get.invoke(HwNotchSizeUtil);
        } catch (Exception e) {
            //ignored
        }
        return hasNotch;
    }

    /**
     * Only work in the latest Vivo devices
     * Ref: https://dev.vivo.com.cn/doc/document/info?id=103
     *
     * @return True if there is notch
     */
    static boolean hasNotchInVivo() {
        boolean hasNotch = false;
        try {
            final Activity activity = UnityPlayer.currentActivity;
            if (activity == null) return false;
            ClassLoader cl = activity.getClassLoader();
            Class FtFeature = cl.loadClass("android.util.FtFeature");
            Method get = FtFeature.getMethod("isFeatureSupport", int.class);
            hasNotch = (boolean) get.invoke(FtFeature, 0x00000020);

        } catch (Exception e) {
            //ignored
        }
        return hasNotch;
    }
}