android contacts 联系人搜索解析

Android contacts 联系人通讯录源码完全解析

http://blog.csdn.net/Kafka_88/article/details/50670406#35联系人搜索

在Contacts应用内搜索联系人，主要步骤：
1. 在主界面PeopleActivity点击联系人搜索按钮，触发onAction方法。
2. 调用restartLoader来启动Loader异步更新数据。
3. 在LoadeManager的回调接口onCreateLoader创建、配置Loader，包括查询的Uri等，此阶段配置的uri参数为Contacts.CONTENT_FILTER_URI。
4. Loader启动后调用ContactProvider2的query方法，
匹配的uri为Contacts.CONTENT_FILTER_URI的分支。
5. 在ContactProvider2的appendSearchIndexJoin方法中拼接Sql语句，并调用Sqlite的底层query语句查询。
6. 完成查询后回调LoaderManager的onLoaderFinish刷新UI

queryLocal

case CONTACTS_FILTER: {}

setTablesAndProjectionMapForContactsWithSnippet

appendSearchIndexJoin

// general case: not a phone number, not an email-address
sb.append(SearchIndexManager.getFtsMatchQuery(filter,
FtsQueryBuilder.SCOPED_NAME_NORMALIZING));

/**
* Maintains a search index for comprehensive contact search.
*/
public class SearchIndexManager {

/**
* Scopes each token to a column and normalizes the name.
* Example: "content:foo* name:a1b2c1* tokens:foo* content:bar* name:a2b3c2* tokens:bar*"
*/
public static final FtsQueryBuilder SCOPED_NAME_NORMALIZING =
new ScopedNameNormalizingBuilder();

private static class ScopedNameNormalizingBuilder extends FtsQueryBuilder {

private static class UnscopedNormalizingBuilder extends FtsQueryBuilder {

}

ContactsProvider2 : sb=view_contacts JOIN (SELECT contact_id AS snippet_contact_id, content AS snippet FROM search_index WHERE search_index MATCH 'content:t* OR name:CE* OR tokens:t*' AND snippet_contact_id IN default_directory) ON (_id=snippet_contact_id)

contacts2.db

search_index_context:

docid c0contact_id c1content c2name (voicemail) c3tokens

8 7 D2C4B8ACB0C0A8B8BE D2C4B8ACB0C0A8B8BE D2 telephonenumber

a=A8 v=D2... 1=14

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