<style name="AppTheme" parent="Theme.AppCompat.Light.NoActionBar">
        <item name="android:fitsSystemWindows">true</item>
        <item name="colorPrimary">@android:color/white</item>
        <item name="colorPrimaryDark">@android:color/white</item>
        <item name="colorAccent">@color/colorAccent</item>
    </style>

package com.zzz.zeropay.util;

/*
 * ：Created by z on 2020-07-28
 */

import android.annotation.TargetApi;
import android.app.Activity;
import android.graphics.Color;
import android.os.Build;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;

import java.lang.reflect.Field;
import java.lang.reflect.Method;

public class StatusBarUtil {

    /**
     * 修改状态栏为全透明
     *
     * @param activity
     */
    @TargetApi(19)
    public static void transparencyBar(Activity activity) {
        // Build.VERSION_CODES.LOLLIPOP = 21
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
            Window window = activity.getWindow();
            window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
            window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                    | View.SYSTEM_UI_FLAG_LAYOUT_STABLE);
            window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
            window.setStatusBarColor(Color.TRANSPARENT);

        } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            Window window = activity.getWindow();
            window.setFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS,
                    WindowManager.LayoutParams.FLAG_TRANSLUCENT_STATUS);
        }
    }

    /**
     * 状态栏亮色模式，设置状态栏黑色文字、图标，
     * 适配4.4以上版本MIUIV、Flyme和6.0以上版本其他Android
     *
     * @param activity
     * @return 1:MIUUI 2:Flyme 3:android6.0
     */
    public static int StatusBarLightMode(Activity activity) {
        int result = 0;
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT) {
            if (MIUISetStatusBarLightMode(activity, true)) {
                //小米
                result = 1;
            } else if (FlymeSetStatusBarLightMode(activity.getWindow(), true)) {
                //魅族
                result = 2;
            } else if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                //6.0以上
                activity.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
                result = 3;
            } else {
                //其他的都设置状态栏成半透明的,以下设置半透明是调用第三方ImmersionBar库的，根据个人需求更改，
                //ImmersionBar.with(activity).statusBarDarkFont(true, 0.5f).init();
            }
        }
        return result;
    }

    /**
     * 设置状态栏图标为深色和魅族特定的文字风格
     * 可以用来判断是否为Flyme用户
     *
     * @param window 需要设置的窗口
     * @param dark   是否把状态栏文字及图标颜色设置为深色
     * @return boolean 成功执行返回true
     */
    public static boolean FlymeSetStatusBarLightMode(Window window, boolean dark) {
        boolean result = false;
        if (window != null) {
            try {
                WindowManager.LayoutParams lp = window.getAttributes();
                Field darkFlag = WindowManager.LayoutParams.class
                        .getDeclaredField("MEIZU_FLAG_DARK_STATUS_BAR_ICON");
                Field meizuFlags = WindowManager.LayoutParams.class
                        .getDeclaredField("meizuFlags");
                darkFlag.setAccessible(true);
                meizuFlags.setAccessible(true);
                int bit = darkFlag.getInt(null);
                int value = meizuFlags.getInt(lp);
                if (dark) {
                    value |= bit;
                } else {
                    value &= ~bit;
                }
                meizuFlags.setInt(lp, value);
                window.setAttributes(lp);
                result = true;
            } catch (Exception e) {

            }
        }
        return result;
    }

    /**
     * 需要MIUIV6以上
     *
     * @param activity
     * @param dark     是否把状态栏文字及图标颜色设置为深色
     * @return boolean 成功执行返回true
     */
    public static boolean MIUISetStatusBarLightMode(Activity activity, boolean dark) {
        boolean result = false;
        Window window = activity.getWindow();
        if (window != null) {
            Class clazz = window.getClass();
            try {
                int darkModeFlag = 0;
                Class layoutParams = Class.forName("android.view.MiuiWindowManager$LayoutParams");
                Field field = layoutParams.getField("EXTRA_FLAG_STATUS_BAR_DARK_MODE");
                darkModeFlag = field.getInt(layoutParams);
                Method extraFlagField = clazz.getMethod("setExtraFlags", int.class, int.class);
                if (dark) {
                    extraFlagField.invoke(window, darkModeFlag, darkModeFlag);//状态栏透明且黑色字体
                } else {
                    extraFlagField.invoke(window, 0, darkModeFlag);//清除黑色字体
                }
                result = true;

                if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
                    //开发版 7.7.13 及以后版本采用了系统API，旧方法无效但不会报错，所以两个方式都要加上
                    if (dark) {
                        activity.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN | View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
                    } else {
                        activity.getWindow().getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_VISIBLE);
                    }
                }
            } catch (Exception e) {

            }
        }
        return result;
    }
}

public abstract class BaseActivity extends AppCompatActivity {

    @Override
    protected void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);//禁止横屏

        StatusBarUtil.transparencyBar(this); //设置状态栏全透明
        StatusBarUtil.StatusBarLightMode(this); //设置白底黑字
        do other things ....
    }
}