[移动开发]Android 10 及api29之后，解决全透明导航栏不成功

<?xml version="1.0" encoding="utf-8"?>
<resources>

    <style name="Theme.FridgeLauncher" parent="Theme.Design.NoActionBar">
        <!-- Primary brand color. -->
        <item name="colorPrimary">@color/purple_500</item>
        <item name="colorPrimaryVariant">@color/purple_700</item>
        <item name="colorOnPrimary">@color/white</item>
        <!-- Secondary brand color. -->
        <item name="colorSecondary">@color/teal_200</item>
        <item name="colorSecondaryVariant">@color/teal_700</item>
        <item name="colorOnSecondary">@color/black</item>
        <!-- Status bar color. -->
        <item name="android:statusBarColor">?attr/colorPrimaryVariant</item>
        <!-- Customize your theme here. -->
        <item name="android:enforceStatusBarContrast">false</item>
        <item name="android:enforceNavigationBarContrast">false</item>
    </style>
</resources>

如上所示，在自定义的主题themes 中<style>标签中添加最后两个item，即可解决android29及之后版本全透明导航栏失败的问题。

<item name="android:enforceStatusBarContrast">false</item>
<item name="android:enforceNavigationBarContrast">false</item>

注：全屏透明导航栏

public static void FullTrans(Activity activity) {
        Window window = activity.getWindow();
        window.clearFlags(WindowManager.LayoutParams.FLAG_TRANSLUCENT_NAVIGATION);
        window.getDecorView().setSystemUiVisibility(View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
                | View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION);
        window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);
        window.setNavigationBarColor(Color.TRANSPARENT);
}