Android Studio Java项目Gradle同步报错：groovy.lang.MissingMethodException解决求助

Hey there! Let's break down how to fix this Gradle sync error you're hitting. That "No signature of method" error usually means there's a mismatch between your Android Gradle Plugin (AGP) version and the SDK level/syntax you're using, or a deprecated configuration that's no longer supported.

Here are the key fixes to try:

1. Match AGP and Gradle versions to your compileSdk 31 #

Compile SDK 31 (Android 12) requires AGP 7.0.0 or higher, which in turn needs Gradle 7.0+. Let's update these first:

• Open your project's root build.gradle file, and update the AGP classpath:

  buildscript {
      repositories {
          google()
          mavenCentral()
      }
      dependencies {
          // Use a version compatible with compileSdk 31, e.g., 7.0.4
          classpath "com.android.tools.build:gradle:7.0.4"
      }
  }
  

• Then open gradle/wrapper/gradle-wrapper.properties and update the Gradle distribution URL to match:

  distributionUrl=https\://services.gradle.org/distributions/gradle-7.0.2-all.zip
  

2. Update Data Binding configuration (optional but recommended) #

Starting with AGP 4.0, the recommended way to enable Data Binding is using the buildFeatures block instead of the old databinding closure. While the old syntax might work in newer AGP versions, switching to the new one avoids potential compatibility issues:

In your app module's build.gradle, replace:

databinding {
    enabled true
}

with:

buildFeatures {
    dataBinding true
}

3. Fix the test instrumentation runner #

You're using the old support library version of the test runner, which isn't compatible with modern AndroidX setups (required for compileSdk 31). Update it to the AndroidX version:

defaultConfig {
    // ... other configs
    testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}

Final Modified app/build.gradle #

Here's what your updated app module build.gradle should look like after these changes:

android {
    compileSdk 31
    buildFeatures {
        dataBinding true
    }
    defaultConfig {
        applicationId "com.example.rssi"
        minSdk 21
        targetSdk 31
        versionCode 1
        versionName "1.0"
        testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
    }
    buildTypes {
        release {
            minifyEnabled false
            proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
        }
    }
    compileOptions {
        sourceCompatibility JavaVersion.VERSION_1_8
        targetCompatibility JavaVersion.VERSION_1_8
    }
}

After making these changes, click "Sync Project with Gradle Files" in Android Studio. If you still run into issues, let me know and we can troubleshoot further!

内容的提问来源于stack exchange，提问作者Init