Android Studio 3.1编译持续失败，附项目Gradle配置文件

Hey there! Let’s work through this compilation failure issue together. Since you haven’t shared the exact error logs yet (those are super helpful for pinpointing problems), let’s start with the most common fixes tailored to your project setup:

1. First, Resolve Gradle Sync Issues #

More often than not, compilation failures start with a failed Gradle sync. Here’s what to do:

• Check the top-right corner of Android Studio for any red sync error notifications. If you see one, click the Sync Project with Gradle Files button to retry.
• If sync fails due to network issues (like being unable to download dependencies from Google or JCenter), try switching to domestic mirrors. Update your project-level build.gradle repositories like this:

  buildscript {
      ext.kotlin_version = '1.2.41'
      repositories {
          maven { url 'https://maven.aliyun.com/repository/google' }
          maven { url 'https://maven.aliyun.com/repository/jcenter' }
          mavenCentral()
      }
      // ... rest of your buildscript code
  }
  
  allprojects {
      repositories {
          maven { url 'https://maven.aliyun.com/repository/google' }
          maven { url 'https://maven.aliyun.com/repository/jcenter' }
          mavenCentral()
      }
  }
  

2. Verify Kotlin Version Compatibility #

Your Android Gradle Plugin (AGP) version 3.1.2 is compatible with Kotlin 1.2.30–1.2.51, so your 1.2.41 is in range—but sometimes minor version tweaks fix hidden bugs:

• Try updating Kotlin to 1.2.51 (the most stable patch for that branch) by changing ext.kotlin_version = '1.2.51', then sync again.
• If that doesn’t work, downgrade to 1.2.30 to rule out version-specific issues.

3. Wipe Caches and Rebuild #

Cached build files are a frequent culprit for mysterious failures:

• Go to Build > Clean Project, then Build > Rebuild Project.
• If that still fails, manually delete the .gradle folders (both in your project root and module directories) and the build folders, then restart Android Studio and sync again.

4. Check Your Module-Level build.gradle #

Even if your project-level file looks good, module-level issues can break compilation:

• Ensure your compileSdkVersion and targetSdkVersion are compatible with AGP 3.1.2 (it supports up to API 27, Android 8.1). Your module’s android block should look something like this:

  android {
      compileSdkVersion 27
      defaultConfig {
          targetSdkVersion 27
          // ... other default configs
      }
  }
  

• Make sure the Kotlin plugin is applied correctly at the top of your module file:

  apply plugin: 'com.android.application'
  apply plugin: 'kotlin-android'
  // Add this if you use Kotlin Android Extensions:
  apply plugin: 'kotlin-android-extensions'
  

5. Dig Into Build Output Logs #

If none of the above works, you need to look at the actual error details:

• Click the Build tab at the bottom of Android Studio, then switch to the Build Output view. Look for lines starting with error:—these will tell you exactly what’s broken (e.g., dependency conflicts, syntax errors, missing resources).

Once you have those specific error messages, you’ll be able to narrow down the problem even faster!

内容的提问来源于stack exchange，提问作者Simple Fellow