Android Studio Gradle同步失败求助：Manifest XML解析错误

Hey there, let’s get this sorted out for you! The error you’re seeing isn’t actually a core Gradle issue—Gradle sync is failing because it can’t parse your invalid AndroidManifest.xml file. Let’s break down the problem and fix it step by step.

The Root Cause: Invalid XML Syntax in Manifest #

Looking at your manifest code, the error points to line 19, column 13. That’s where you’ve got a misplaced attribute in your MainActivity declaration:

<activity android:name="com.example.foodgent.UserInterface.MainActivity" android:windowSoftInputMode="adjustResize">
    android:windowSoftInputMode="adjustResize" <!-- This line is invalid! -->

You duplicated the android:windowSoftInputMode attribute and placed it inside the activity tag body instead of keeping it in the opening tag. XML doesn’t allow floating attribute declarations like this—it expects proper start/end tags or nested elements here.

Fix the Manifest File #

Replace the broken MainActivity section with this corrected code:

<activity 
    android:name="com.example.foodgent.UserInterface.MainActivity" 
    android:windowSoftInputMode="adjustResize">
    <intent-filter>
        <action android:name="android.intent.action.MAIN"/>
        <category android:name="android.intent.category.LAUNCHER"/>
    </intent-filter>
</activity>

Bonus: Clean Up Your build.gradle to Avoid Future Issues #

While we’re troubleshooting, I noticed a couple of red flags in your dependencies that could cause conflicts later:

• You’ve duplicated the androidx.appcompat:appcompat:1.1.0 dependency—remove one instance of it.
• You’re mixing AndroidX AppCompat (androidx.appcompat:appcompat) and the old support library version (com.android.support:appcompat-v7:22.0.0). These two don’t play well together—delete the old support library dependency entirely since you’re already using AndroidX.

Final Steps #

1. Save the corrected AndroidManifest.xml file.
2. Clean up the duplicate/mixed dependencies in build.gradle.
3. Try syncing Gradle again—this should resolve the parse error and complete the sync successfully.

内容的提问来源于stack exchange，提问作者CodeChris B