The android immersive menu bar is simple to implement.

First of all, I am not clear about the immersive menu bar. Let me talk about the effect first.

In your res-values-styles:

<!-- 设置为透明-->
<item name="android:statusBarColor">@android:color/transparent</item>
        <!-- Android 6.0以上 状态栏字色和图标为浅黑色-->
    <item name="android:windowLightStatusBar">true</item>

Fill in the code in the activity to realize the height disappearance of the status bar status (the background is the picture recommended, not the picture carefully considered):

if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
            getWindow().getDecorView().setSystemUiVisibility(
                    View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN|View.SYSTEM_UI_FLAG_LIGHT_STATUS_BAR);
        }

That's how it works

Then what is not added is the height of the status bar but no color

Add the setting color to the required activity:

getWindow().setStatusBarColor(getResources().getColor(R.color.bar_page,null));

My requirement here is fulfilled because the color I set is consistent with the color of my homepage.