OpenCV Android库从4.1.0升级至4.1.1时遇“Package not found”问题求助

Hey there, let's tackle this frustrating issue you're hitting after upgrading to OpenCV 4.1.1. Compiling works fine, but that "Package not found" popup and blank Play Store page points to a common pitfall with newer OpenCV Android versions—let's break down the fixes:

1. Ditch the OpenCV Manager (It's Likely the Culprit) #

Older OpenCV versions relied on a separate OpenCV Manager app from Google Play to load libraries, but this service has been deprecated for quite some time. It's very likely that 4.1.1 either removes support for this outdated mechanism entirely, or the Manager package is no longer available on the Play Store (hence the blank page).

The solution here is to statically link OpenCV directly into your app (no more external dependencies):

• Re-import the OpenCV 4.1.1 Android SDK as a module in Android Studio, making sure you've downloaded the full package from the official source (double-check for corrupted files!).
• Update your app's build.gradle to explicitly depend on the OpenCV module and specify supported ABIs:

  android {
      defaultConfig {
          ndk {
              abiFilters 'armeabi-v7a', 'arm64-v8a', 'x86', 'x86_64'
          }
      }
  }
  
  dependencies {
      implementation project(':opencv')
  }
  

• Replace any OpenCVLoader.initAsync() calls in your code with a static initialization block (works for debug builds; for release, ensure the libraries are properly packaged):

  static {
      if (!OpenCVLoader.initDebug()) {
          // Add custom error handling here if needed
          Log.e("OpenCV", "Initialization failed!");
      }
  }
  

2. Verify Module Configuration #

Double-check that your imported OpenCV 4.1.1 module's build.gradle matches your app's configuration:

• Ensure compileSdkVersion, minSdkVersion, and targetSdkVersion align with your app's settings to avoid hidden compatibility issues.
• Confirm that the OpenCV module's src/main/jniLibs folder contains all the necessary .so files for your target ABIs.

3. Clean and Rebuild Your Project #

Sometimes cached build files can cause weird issues after version upgrades:

• Go to Build > Clean Project in Android Studio.
• Follow up with Build > Rebuild Project to generate fresh binaries.

This should resolve the "Package not found" error by eliminating the dependency on the defunct OpenCV Manager and ensuring OpenCV libraries are bundled directly with your app.

内容的提问来源于stack exchange，提问作者M Vignesh