AndroidX向下兼容咨询：SDK23（Android6）项目能否使用AndroidX？

Hey there! Great question—let me clear up this confusion for you right away: Yes, you absolutely can use AndroidX in your project targeting SDK 23 (Android 6). That note about Android 9/SDK 28 on Google's docs is probably throwing you off, but it doesn't mean AndroidX is off-limits for older versions. Here's the breakdown:

• AndroidX's actual minimum SDK support: Most core AndroidX libraries support far lower API levels than 28. For example:

  • androidx.core:core works back to API 14
  • androidx.appcompat:appcompat supports API 14 and above
  • androidx.recyclerview:recyclerview is compatible with API 14+
    The SDK 28 mention you saw might refer to recommended targetSdkVersion for certain advanced features, or maybe a specific niche library's requirements—not the baseline minimum to use AndroidX at all.

• Migrating is totally feasible: If you're still on the old support libraries, switching to AndroidX for your SDK 23 project is straightforward. Just do two key things:

  1. Add these lines to your gradle.properties file to enable AndroidX and auto-migrate third-party dependencies:

     android.useAndroidX=true
     android.enableJetifier=true
     

     Jetifier will handle converting any third-party libraries that still rely on support libraries to their AndroidX equivalents, so you won't hit compatibility snags.
  2. Replace your existing support library dependencies with their AndroidX counterparts (e.g., swap com.android.support:appcompat-v7 for androidx.appcompat:appcompat).

• Why AndroidX is better than sticking with support libraries: The old support libraries haven't received updates since 2019—no bug fixes, no security patches, no new features. AndroidX is actively maintained by Google, so switching will keep your project secure and give you access to improvements, even for older Android versions like 6.

If you run into specific hiccups during migration (like dependency conflicts or build errors), feel free to share more details about your project setup, and the community can help troubleshoot further.

内容的提问来源于stack exchange，提问作者hawarden_