AppSearch：应用内全文搜索Collection 1.7.0-alpha01

import androidx.appsearch.app.AppSearchSchema;
import androidx.appsearch.app.AppSearchSession;
import androidx.appsearch.app.SetSchemaRequest;
import androidx.appsearch.app.PutDocumentsRequest;

AppSearchSchema schema = new AppSearchSchema.Builder("Note")
    .addProperty(new AppSearchSchema.StringPropertyConfig.Builder("title")
        .setCardinality(AppSearchSchema.PropertyConfig.CARDINALITY_OPTIONAL)
        .setIndexingType(AppSearchSchema.StringPropertyConfig.INDEXING_TYPE_PREFIXES)
        .build())
    .build();

session.setSchemaAsync(
    new SetSchemaRequest.Builder().addSchema(schema).build()
);

AppSearchDocument document = new AppSearchDocument.Builder("Note", "uri://note/1")
    .setPropertyString("title", "购物清单")
    .build();

session.putAsync(
    new PutDocumentsRequest.Builder().addDocument(document).build()
);

SearchResults results = session.searchAsync("购物", new SearchSpec.Builder().build());
List<SearchResult> page = results.getNextPageAsync().get();