无法将dynamoDB导入android？

因此，我正在尝试建立一个aws数据库，并且我正在按照教程进行设置：

但这些进口商品都不管用！当我导入以下内容时：

    import com.amazonaws.services.dynamodbv2.*;
    import com.amazonaws.mobileconnectors.dynamodbv2.dynamodbmapper.*;
    import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBAttribute;
    import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBHashKey;
    import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBMapper;
    import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBScanExpression;
    import com.amazonaws.services.dynamodbv2.datamodeling.DynamoDBTable;
    import com.amazonaws.services.dynamodbv2.datamodeling.PaginatedScanList;

以下是我的依赖项：

    compile 'com.amazonaws:aws-android-sdk-core:2.3.3'
    compile 'com.amazonaws:aws-android-sdk-cognito:2.3.3'
    compile 'com.amazonaws:aws-android-sdk-s3:2.3.3'
    compile('com.amazonaws:aws-android-sdk-mobileanalytics:2.3.3')
    compile('com.amazonaws:aws-android-sdk-apigateway-core:2.3.3')
    compile 'com.amazonaws:aws-android-sdk-cognitoidentityprovider:2.3.3'

---

因为dynamoDB位于com.amazonaws:aws-android-sdk-ddb:2.2.+。 如果要使用dynamoDB映射器类来使用POJO，则需要导入
amazonaws:aws android sdk ddb映射器：2.2.+

所以用这个代替

 compile 'com.amazonaws:aws-android-sdk-core:2.2.+'
 compile 'com.amazonaws:aws-android-sdk-cognito:2.2.+'
 compile 'com.amazonaws:aws-android-sdk-cognitoidentityprovider:2.2.+'
 compile 'com.amazonaws:aws-android-sdk-ddb:2.2.+'
 compile 'com.amazonaws:aws-android-sdk-ddb-mapper:2.2.+'