升级NativeScript与系统后App仅Android端无法运行，求技术支持

Hey there, let's work through this frustrating build issue you're hitting. After upgrading NativeScript, macOS, and Android Studio, it's common for Gradle or SDK mismatches to pop up. Here are actionable steps to get your app running on Android again:

1. Wipe Build Caches & Reinitialize Android Platform #

First, let's clear out any stale build files that might be causing conflicts:

• Remove the existing Android platform from your project:

  tns platform remove android
  

• Re-add the Android platform specifically matching your NativeScript 3.4.3 version to ensure compatibility:

  tns platform add android@3.4.3
  

• Delete Gradle's global cache on your Mac to eliminate corrupted dependencies:

  rm -rf ~/.gradle/caches
  

• Also, manually delete the platforms/android/build and platforms/android/.gradle directories in your project to clean residual build artifacts.

2. Verify Android SDK & Environment Configurations #

Android Studio upgrades sometimes mess with SDK paths or installed components:

• Open Android Studio, go to SDK Manager, and confirm you have the correct build tools installed. NativeScript 3.4.x works best with Android SDK Build Tools 26.0.2 or 27.x—make sure these are checked and installed.
• Double-check your environment variables in the terminal:
  • Run echo $ANDROID_HOME—it should point to your Android SDK directory (typically /Users/[YourUsername]/Library/Android/sdk).
  • Ensure PATH includes the SDK tools:

    echo $PATH | grep -E "$ANDROID_HOME/tools|$ANDROID_HOME/platform-tools"
    

  If not, update your shell profile (.bash_profile or .zshrc) to add these paths.

3. Audit Your app.gradle Configuration #

Custom configurations in App_Resources/Android/app.gradle often break after Gradle upgrades:

• Open the file and look for outdated settings, like deprecated compile options or plugin dependencies that aren't compatible with newer Gradle versions.
• Try temporarily commenting out custom blocks (like dependencies or android overrides) and rebuild to see if the error goes away. If it does, you can narrow down which line is causing the issue.

4. Get Detailed Gradle Error Logs #

The default tns debug android output is too vague. To see exactly what's failing:

• Run the build with trace logging enabled:

  tns build android --log trace
  

• Or navigate directly to the Android platform directory and run Gradle manually for full error details:

  cd platforms/android
  ./gradlew clean build
  

This will show you specific errors like missing dependencies, compile-time issues, or SDK mismatches that the NativeScript CLI hides.

5. Check Third-Party Plugin Compatibility #

NativeScript 3.4.3 might not play nice with older plugins:

• Go through your package.json and check if any plugins have updates available that support NS 3.4.x.
• Temporarily remove suspicious plugins (one at a time) and rebuild to identify if a specific plugin is causing the failure.

If none of these steps work, sharing the full Gradle error log from step 4 would help pinpoint the exact issue—but these steps resolve most post-upgrade build failures.

内容的提问来源于stack exchange，提问作者Dataman In Time