为Android NavigationView设置itemTextAppearance致文本加粗，求助排查代码问题

Hey there! Let's figure out why your Navigation Drawer menu items are turning bold when you apply your pre-defined text styles. Here are the most likely issues to check and fix:

A common gotcha is that your custom style could be inheriting a bold text style from its parent—even if you didn’t explicitly set it. For example, if your style inherits from a system style like TextAppearance.AppCompat.Widget.ActionBar.Menu (which is bold by default), that’ll override your intended styling.

To fix this, explicitly set android:textStyle="normal" in your custom style to override the parent’s bold setting:

<style name="YourExistingTextStyle" parent="YourParentStyle">
    <item name="android:textStyle">normal</item>
    <!-- Keep your other existing style attributes here -->
</style>

Make sure you’re using the correct attribute to apply your style to the menu items, and that you haven’t accidentally referenced a bold style. If you’re using NavigationView, you’ll set the text appearance via app:itemTextAppearance:

<com.google.android.material.navigation.NavigationView
    android:id="@+id/nav_view"
    android:layout_width="wrap_content"
    android:layout_height="match_parent"
    android:layout_gravity="start"
    app:itemTextAppearance="@style/YourExistingTextStyle" <!-- Confirm this is your intended style -->
    app:menu="@menu/nav_drawer_menu" />

Also, peek into your menu XML file (nav_drawer_menu.xml or similar) to ensure no individual menu item has a hardcoded android:textStyle="bold" attribute—this would override the global style you set:

<!-- Avoid this in your menu items! -->
<item
    android:id="@+id/nav_home"
    android:title="@string/home"
    android:textStyle="bold" />

If you’re using a Material Components theme, the default Navigation Drawer item styles might apply bold to selected items (or even all items) out of the box. To fix this, you can either:

• Add textStyle="normal" (alongside the Android framework attribute) to your custom style for Material compatibility:

  <style name="YourExistingTextStyle" parent="TextAppearance.MaterialComponents.Body1">
      <item name="android:textStyle">normal</item>
      <item name="textStyle">normal</item>
  </style>
  

• Or explicitly set separate styles for active and inactive items using app:itemTextAppearanceActive and app:itemTextAppearanceInactive on your NavigationView, ensuring neither uses bold.

If you’re still stuck, fire up Android Studio’s Layout Inspector tool. Select your running app, navigate to the Navigation Drawer, and inspect the menu item’s TextView. Look at the textStyle property—this will show you exactly which style or attribute is setting the bold value, so you can trace back to the root cause.

内容的提问来源于stack exchange，提问作者c_idle