Software⏱️ 2 min read📅 2026-05-31

How to Fix: Gradle Sync failed could not find constraint-layout:1.0.0-alpha2

Gradle Sync failed due to missing constraint-layout dependency. Required by app:app, update Android Support Library.

Quick Answer: Update the Android Support Library in your project's build.gradle file.

📋 Table of Contents

  1. 💡 Why You Are Getting This Error
  2. 🔧 Proven Troubleshooting Steps
  3. ✨ Wrapping Up

The 'Gradle Sync failed could not find constraint-layout:1.0.0-alpha2' error occurs when the Android Support Library version is outdated or incompatible with your project's build configuration.

💡 Why You Are Getting This Error

  • Causes of this error include:

🔧 Proven Troubleshooting Steps

Method 1: Update Android Support Library

  1. Step 1: Open the Android Studio Project Settings, then navigate to Project Structure and select the Dependencies tab.

Method 2: Update Gradle File

  1. Step 1: Open the build.gradle file and add the following line under the dependencies section:
implementation 'com.android.support.constraint:constraint-layout:1.0.2-alpha3'

✨ Wrapping Up

By following these steps, you should be able to resolve the 'Gradle Sync failed could not find constraint-layout:1.0.0-alpha2' error and successfully sync your project.

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