Google Play 服务在 Android 2.3 Vision API 上崩溃

Question

我正在使用 Android Vision API 作为 QR 码扫描仪，它可以在多个 Android 设备和版本上正常工作，Android 除外 2 .3.x 台设备。当我打开 QR 码扫描器时，会显示一个对话框，显示 google-play-services 崩溃。在 Logcat 中，我看到以下错误。

FATAL EXCEPTION: AsyncOperationService[VisionDependencyIntentService]
java.lang.NoSuchMethodError: android.content.SharedPreferences.getStringSet
        at com.google.android.gms.vision.service.VisionDependencyIntentService.b(SourceFile:185)
        at com.google.android.gms.vision.service.VisionDependencyIntentService.a(SourceFile:174)
        at com.google.android.gms.vision.service.a.a.a(SourceFile:45)
        at com.google.android.gms.chimera.f.run(SourceFile:179)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1088)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:581)
        at java.lang.Thread.run(Thread.java:1019)

这是我的片段的代码

@Override
public void onViewCreated(View view, Bundle savedInstanceState)
{
  super.onViewCreated(view, savedInstanceState);

  Activity activity = getActivity();

  preview = (CameraSourcePreview) view.findViewById(R.id.preview);

  int connectionResult = GoogleApiAvailability.getInstance().isGooglePlayServicesAvailable(activity);
  if (connectionResult == ConnectionResult.SUCCESS)
  {
     // create a barcode detector.
     BarcodeDetector barcodeDetector = new BarcodeDetector.Builder(activity).setBarcodeFormats(Barcode.QR_CODE)
           .build();

     // create a processor to filter qr-codes and a tracker to handle the selected qr-code.
     barcodeDetector.setProcessor(new QrCodeProcessor(barcodeDetector, new QrCodeTracker(this)));

     if (barcodeDetector.isOperational())
     {
        // Creates and starts the camera.
        cameraSource = new CameraSource.Builder(activity, barcodeDetector)
              .setFacing(CameraSource.CAMERA_FACING_BACK).setRequestedPreviewSize(1600, 1024)
              .setRequestedFps(15.0f).build();
     }
     else
     {
        showAlert(R.string.QrCodeScanner_alert_play_services_not_operational_header,
              R.string.QrCodeScanner_alert_play_services_not_operational_body);
     }
  }
  else
  {
     PlatformUtil.handlePlayServicesError(activity, connectionResult);
  }
}

根据 Google 播放服务指南 Android 2.3 应该被支持： https://developers.google.com/android/guides/setup

我也尝试释放一些 space 并按照中的建议恢复出厂设置，但没有任何成功。

有人知道我做错了什么吗？

Answer 1

看起来这个特定的 API 依赖于 SharedPreferences.getStringSet()，根据 Android docs，它仅在 API 11 中引入（Android v3 .0 蜂巢）。

您将无法在 2.x 台设备上使用此功能。

Google Play 服务在 Android 2.3 Vision API 上崩溃

Google Play Services Crashes on Android 2.3 Vision API

android

android-2.3-gingerbread

google-play-services

google-vision

android-vision