android - Android Studio 尝试安装 apk 时出错

Question

我是 Android 的新手，正在尝试一个简单的应用程序，您可以在其中拍照并将其发送到另一个 Activity 进行编辑。我为此使用 Android Studio 和 OpenCV 3.1。一切正常。但是当我开始为第二个 Activity 编写代码时，它无法在我的平板电脑上安装 apk，并出现以下错误:

The currently selected variant "x86-debug" uses split APKs, but none of the 1 split apks are compatible with the current device with density "-1" and ABIs "". Error while Installing APK

奇怪的是，就在我修改 onCreate 方法之前调用了该 Activity 。以为我搞砸了什么，我禁用了所有东西，清理并再次尝试。现在该应用程序拒绝安装，即使它与一切正常时的状态相同。

我的第二个 Activity 如下:

public class SecondaryActivity extends Activity{

    public static final String PHOTO_MIME_TYPE = "image/png";
    public static final String EXTRA_PHOTO_URI = "com.example.morpheus.myapplication.SecondaryActivity.extra.PHOTO_URI";
    public static final String EXTRA_PHOTO_DATA_PATH = "com.example.morpheus.myapplication.SecondaryActivity.extra.PHOTO_DATA_PATH";
    private Uri mUri;
    private String mDataPath;
    private Mat photo;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        final Intent intent = getIntent();
        long addr = intent.getLongExtra("img_addr", 0);
        photo = new Mat(addr);

        mUri = intent.getParcelableExtra(EXTRA_PHOTO_URI);
        mDataPath = intent.getStringExtra(EXTRA_PHOTO_DATA_PATH);

        final ImageView imageView = new ImageView(this);
        imageView.setImageURI(mUri);

        setContentView(imageView);

    }
}

调用上述 Activity 的地方是:

        final ContentValues values = new ContentValues();
        values.put(MediaStore.MediaColumns.DATA, photoPath);
        values.put(MediaStore.Images.Media.MIME_TYPE, SecondaryActivity.PHOTO_MIME_TYPE);
        values.put(MediaStore.Images.Media.TITLE, appName);
        values.put(MediaStore.Images.Media.DESCRIPTION, appName);
        values.put(MediaStore.Images.Media.DATE_TAKEN, currentTime);

        File album = new File(albumPath);
        if(album.isDirectory() && !album.mkdirs()){
            Log.e(TAG, "Failed to create album directory at " + albumPath);
            onTakePhotoFailed();
            return;
        }
        Imgproc.cvtColor(rgba, mBGR, Imgproc.COLOR_RGBA2BGR, 3);
        if(!Imgcodecs.imwrite(photoPath, mBGR)){
            Log.e(TAG, "Failed to save photo to " + photoPath);
            onTakePhotoFailed();
        }
        Log.d(TAG, "Photo saved successfully to " + photoPath);

        Uri uri;
        try{
            uri=getContentResolver().insert(MediaStore.Images.Media.EXTERNAL_CONTENT_URI, values);
        } catch (final Exception e){
            Log.e(TAG, "Failed to insert photo into MediaStore");
            e.printStackTrace();
            File photo = new File(photoPath);
            if(!photo.delete()){
                Log.e(TAG, "Failed to delete non-inserted photo!");
            }

            onTakePhotoFailed();
            return;
        }

        final Intent intent = new Intent(this, SecondaryActivity.class);
        intent.putExtra(SecondaryActivity.EXTRA_PHOTO_URI, uri);
        intent.putExtra(SecondaryActivity.EXTRA_PHOTO_DATA_PATH, photoPath);
        long addr = mBGR.getNativeObjAddr();
        intent.putExtra("img_addr", addr);

        startActivity(intent);
    }

最奇怪的是，即使将代码恢复到可以正常工作的状态，它也没有安装。我尝试从平板电脑上手动卸载该应用程序。但这也无济于事。

我使用的是配备 Intel Atom 处理器的 Asus ZenPad 8。

任何帮助将不胜感激，因为我的整个项目因此而停滞不前。

Answer 1

这可能与 NDK 和 Build Variants 有关:

JUCE 社区的人们有办法解决这个问题，阅读更多信息 Android Studio tips, tricks & known issues .

作为旁注，尝试在您的应用程序 build.gradle 中使用以下代码将您的 apk 拆分为它们各自的变体:

apply plugin: 'com.android.application'

android {

  compileSdkVersion 23
  buildToolsVersion "23.0.1"
  ...
  ...

  // Split APK Start here
  splits {
    abi {
      enable true
      reset()
      include 'x86', 'x86_64', 'armeabi', 'armeabi-v7a', 'arm64-v8a', 'mips'
      universalApk true
    }
  }

  project.ext.versionCodes = ['armeabi': 1, 'armeabi-v7a': 2, 'arm64-v8a': 3, 'mips': 5, 'mips64': 6, 'x86': 8, 'x86_64': 9]

  android.applicationVariants.all { variant ->
    variant.outputs.each { output ->
      output.versionCodeOverride =
          project.ext.versionCodes.get(output.getFilter(
              com.android.build.OutputFile.ABI), 0) * 10000000 + android.defaultConfig.versionCode
    }
  }
  // Split APK End here
  ...
  ...
}

它会为您提供每种架构的 apk，也会使您的 apk 更小。