Android开发：如何修改Menu中的文本内容？

Got it, let's get that app name updated properly—since you're targeting the actual application name (not the list title in your layout), here's the step-by-step breakdown:

1. Update the App Name in Your Android Manifest #

The core place where your app's name is defined is the AndroidManifest.xml file. Look for the <application> tag and modify the android:label attribute to your desired text:

<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="Welcome to Engineering" <!-- This sets the app name -->
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/Theme.YourAppTheme">
    <!-- Your activities, services, etc. go here -->
</application>

Pro Tip: Use String Resources (Recommended) #

For easier future edits and localization, define the name in res/values/strings.xml first:

<string name="app_name">Welcome to Engineering</string>

Then reference it in the manifest:

android:label="@string/app_name"

2. Fix Activity-Level Title Overrides #

If you notice the name isn't updating on specific screens (like the ActionBar), check if individual <activity> tags in the manifest have their own android:label set. If so, either:

• Remove the activity-specific android:label to inherit the app's name
• Or set it to the same @string/app_name resource

Alternatively, you can force the ActionBar to use the app name in your Activity's onCreate() method:

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.your_layout);
    
    // Set ActionBar title to app name
    if (getSupportActionBar() != null) {
        getSupportActionBar().setTitle(getString(R.string.app_name));
    }
}

3. Ignore Unrelated Files (For Now) #

Just to clarify:

• Your layout XML file's list title is separate from the app name—you don't need to touch that unless you want to change the list's heading.
• The Menu file you mentioned doesn't affect the app name display, so you can hold off on modifying it until you're ready to add functionality.

Once you make these changes, rebuild your app and you'll see "Welcome to Engineering" as your app's name in the launcher, ActionBar, and system settings.

内容的提问来源于stack exchange，提问作者Mason Stevens