AndroidManifest问题：启动器图标标签不显示如何解决？

Hey there! Let's figure out why your app's launcher icon label isn't showing up—this is a super common gotcha, so let's walk through the most likely fixes step by step.

1. Double-Check Your Manifest's Activity Label #

The launcher pulls the label from your main LAUNCHER activity first, so make sure that's properly configured:

• Ensure your main activity (the one with the MAIN and LAUNCHER intent filter) has an android:label attribute pointing to your string resource, or a direct text value. Example:

  <activity
      android:name=".MainActivity"
      android:label="@string/app_name"> <!-- This is critical! -->
      <intent-filter>
          <action android:name="android.intent.action.MAIN" />
          <category android:name="android.intent.category.LAUNCHER" />
      </intent-filter>
  </activity>
  

• Also check your root <application> tag: if the activity doesn't have a label, the launcher will fall back to the app's label. Make sure android:label="@string/app_name" is set there too, just in case.

2. Verify Your Strings Resource File #

Typos or empty strings are easy to miss—let's confirm your label is properly defined:

• Open your res/values/strings.xml and make sure your label string exists and isn't empty:

  <string name="app_name">Your App Name Here</string>
  

• Check for language-specific resource folders (like res/values-es/strings.xml): if you've added localized strings, ensure the label is defined in all of them—empty values in a localized file can cause the label to disappear when the device uses that language.

3. Check Launcher Settings (Don't Overlook This!) #

Many third-party launchers (Nova, Lawnchair, etc.) and even some stock launchers have an option to hide app labels. Do a quick check:

• Long-press on your home screen and open launcher settings
• Look for options like "Icon Labels", "Hide Labels", or "Label Style"
• Make sure labels are enabled and set to a visible style

4. Clear Caches & Rebuild Your Project #

Stale cache is often the culprit—try these steps:

• In Android Studio, run Build > Clean Project followed by Build > Rebuild Project
• Uninstall the app from your device completely, then reinstall it
• Clear your launcher app's cache (go to Settings > Apps > [Your Launcher] > Storage > Clear Cache)

5. Check Adaptive Icon Configuration (Android 12+) #

If you're targeting Android 12 or higher, adaptive icons have specific requirements that can indirectly affect label display:

• Ensure you have valid adaptive icon resources in res/mipmap-anydpi-v26/ic_launcher.xml and ic_launcher_round.xml
• Confirm your <application> tag includes both android:icon="@mipmap/ic_launcher" and android:roundIcon="@mipmap/ic_launcher_round"
• Missing or malformed adaptive icons can sometimes cause the launcher to skip rendering labels as a fallback

If none of these fix it, could you share snippets of your full AndroidManifest.xml and strings.xml? Also, describe what your screenshot shows (e.g., icon appears but label is blank, or both are missing?)—that will help narrow it down further.

内容的提问来源于stack exchange，提问作者marc_alpha