重装系统后Android Studio异常：Gradle下载失败、项目同步失败、无Android菜单

Hey there, let's work through these Android Studio problems one by one—they're pretty typical after a fresh format and install, so you're not alone!

1. Fixing Initial SDK Download Failures in Setup Wizard #

Since you already manually downloaded the SDK, here's how to hook it up correctly:

• When launching Android Studio for the first time, select the Custom installation option instead of Standard.
• On the "SDK Components" screen, click the Edit button next to "Android SDK Location" and browse to the folder where you saved your manually downloaded SDK.
• Make sure all required components (like Android SDK Platform for your target version, Android SDK Build Tools, and Android SDK Command-line Tools) are checked, then proceed with the setup.
• If you already skipped this step and opened the IDE, go to File > Settings > Appearance & Behavior > System Settings > Android SDK (on Mac, it's Android Studio > Settings > ...), set the SDK path here, and install any missing components.

2. Resolving Gradle 4.6 Download Failures #

The gradle-4.6-all.zip download issue usually comes from network restrictions or slow official servers. Try these two fixes:

Option 1: Manual Gradle Installation #

• Download the gradle-4.6-all.zip file from the official Gradle release page (you can find it via a quick search, no external links needed here).
• Navigate to your Gradle wrapper directory:
  • Windows: C:\Users\<YourUsername>\.gradle\wrapper\dists\gradle-4.6-all\<random-folder-name>
  • Mac/Linux: ~/.gradle/wrapper/dists/gradle-4.6-all/<random-folder-name>
• Extract the downloaded zip into this folder, then go back to Android Studio and click Sync Project with Gradle Files.

Option 2: Use Domestic Maven Mirrors #

• Open your project's root build.gradle file.
• Replace the default repositories blocks with domestic mirrors to speed up downloads:

  buildscript {
      repositories {
          maven { url 'https://maven.aliyun.com/repository/google' }
          maven { url 'https://maven.aliyun.com/repository/jcenter' }
      }
      // ... rest of your buildscript code
  }
  
  allprojects {
      repositories {
          maven { url 'https://maven.aliyun.com/repository/google' }
          maven { url 'https://maven.aliyun.com/repository/jcenter' }
      }
  }
  

• Save the file and click Sync Project with Gradle Files again.

3. Restoring Android Options in the Tool Menu #

If the Tool menu is missing Android-specific options, try these steps:

• Check Android Plugins: Go to File > Settings > Plugins (Mac: Android Studio > Settings > Plugins). Search for "Android" and make sure Android Support and Android Studio plugins are enabled. If they're disabled, enable them and restart Android Studio.
• Verify Project Type: Ensure you're working on an Android project. If you accidentally created a Java/Kotlin non-Android project, create a new project and select "Empty Views Activity" (or any Android template) from the project creation wizard.
• Check SDK Configuration: Right-click your project in the Project view > Open Module Settings. Under the "Project" tab, make sure the "Project SDK" is set to an Android SDK version. If not, click the dropdown and select your installed Android SDK.
• Restart IDE: Sometimes plugin or UI glitches cause this—close Android Studio completely, wait a few seconds, then reopen it.

Hope these solutions get your Android Studio up and running without issues! Let me know if you need further clarification on any step.

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