UriMatcher理解

最新推荐文章于 2021-05-27 16:36:27 发布
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本文介绍UriMatcher在Android ContentProvider中的作用及其配置方法。UriMatcher用于验证Uri的有效性，确保外部请求与预设路径匹配。文中详细展示了通过addURI方法配置不同路径及其对应的整型标识符。

UriMatcher主要用在ContentProvider中，用来判断Uri的正确性，如在insert之前先判断用户传进来的Uri是否与UriMatcher定义的匹配。

 

1.定义

private static final ProfileAwareUriMatcher sUriMatcher =   new ProfileAwareUriMatcher(UriMatcher.NO_MATCH);

NO_MATCH是Uri不匹配时返回的code

2.配置：

 

static {
        // Contacts URI matching table
        final UriMatcher matcher = sUriMatcher;
        matcher.addURI(ContactsContract.AUTHORITY, "contacts", CONTACTS);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/#", CONTACTS_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/#/data", CONTACTS_ID_DATA);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/#/entities", CONTACTS_ID_ENTITIES);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/#/suggestions",
                AGGREGATION_SUGGESTIONS);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/#/suggestions/*",
                AGGREGATION_SUGGESTIONS);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/#/photo", CONTACTS_ID_PHOTO);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/#/display_photo",
                CONTACTS_ID_DISPLAY_PHOTO);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/#/stream_items",
                CONTACTS_ID_STREAM_ITEMS);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/filter", CONTACTS_FILTER);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/filter/*", CONTACTS_FILTER);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/lookup/*", CONTACTS_LOOKUP);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/lookup/*/data", CONTACTS_LOOKUP_DATA);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/lookup/*/photo",
                CONTACTS_LOOKUP_PHOTO);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/lookup/*/#", CONTACTS_LOOKUP_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/lookup/*/#/data",
                CONTACTS_LOOKUP_ID_DATA);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/lookup/*/#/photo",
                CONTACTS_LOOKUP_ID_PHOTO);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/lookup/*/display_photo",
                CONTACTS_LOOKUP_DISPLAY_PHOTO);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/lookup/*/#/display_photo",
                CONTACTS_LOOKUP_ID_DISPLAY_PHOTO);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/lookup/*/entities",
                CONTACTS_LOOKUP_ENTITIES);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/lookup/*/#/entities",
                CONTACTS_LOOKUP_ID_ENTITIES);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/lookup/*/stream_items",
                CONTACTS_LOOKUP_STREAM_ITEMS);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/lookup/*/#/stream_items",
                CONTACTS_LOOKUP_ID_STREAM_ITEMS);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/as_vcard/*", CONTACTS_AS_VCARD);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/as_multi_vcard/*",
                CONTACTS_AS_MULTI_VCARD);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/strequent/", CONTACTS_STREQUENT);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/strequent/filter/*",
                CONTACTS_STREQUENT_FILTER);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/group/*", CONTACTS_GROUP);
        matcher.addURI(ContactsContract.AUTHORITY, "contacts/frequent", CONTACTS_FREQUENT);

        matcher.addURI(ContactsContract.AUTHORITY, "raw_contacts", RAW_CONTACTS);
        matcher.addURI(ContactsContract.AUTHORITY, "raw_contacts/#", RAW_CONTACTS_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "raw_contacts/#/data", RAW_CONTACTS_DATA);
        matcher.addURI(ContactsContract.AUTHORITY, "raw_contacts/#/display_photo",
                RAW_CONTACTS_ID_DISPLAY_PHOTO);
        matcher.addURI(ContactsContract.AUTHORITY, "raw_contacts/#/entity", RAW_CONTACT_ENTITY_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "raw_contacts/#/stream_items",
                RAW_CONTACTS_ID_STREAM_ITEMS);
        matcher.addURI(ContactsContract.AUTHORITY, "raw_contacts/#/stream_items/#",
                RAW_CONTACTS_ID_STREAM_ITEMS_ID);

        matcher.addURI(ContactsContract.AUTHORITY, "raw_contact_entities", RAW_CONTACT_ENTITIES);

        matcher.addURI(ContactsContract.AUTHORITY, "data", DATA);
        matcher.addURI(ContactsContract.AUTHORITY, "data/#", DATA_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "data/phones", PHONES);
        matcher.addURI(ContactsContract.AUTHORITY, "data/phones/#", PHONES_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "data/phones/filter", PHONES_FILTER);
        matcher.addURI(ContactsContract.AUTHORITY, "data/phones/filter/*", PHONES_FILTER);
        matcher.addURI(ContactsContract.AUTHORITY, "data/emails", EMAILS);
        matcher.addURI(ContactsContract.AUTHORITY, "data/emails/#", EMAILS_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "data/emails/lookup", EMAILS_LOOKUP);
        matcher.addURI(ContactsContract.AUTHORITY, "data/emails/lookup/*", EMAILS_LOOKUP);
        matcher.addURI(ContactsContract.AUTHORITY, "data/emails/filter", EMAILS_FILTER);
        matcher.addURI(ContactsContract.AUTHORITY, "data/emails/filter/*", EMAILS_FILTER);
        matcher.addURI(ContactsContract.AUTHORITY, "data/postals", POSTALS);
        matcher.addURI(ContactsContract.AUTHORITY, "data/postals/#", POSTALS_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "data/local-groups", LOCAL_GROUPS);
        matcher.addURI(ContactsContract.AUTHORITY, "data/local-groups/#", LOCAL_GROUPS_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "data/local-groups/filter", LOCAL_GROUPS_FILTER);
        matcher.addURI(ContactsContract.AUTHORITY, "data/local-groups/filter/*", LOCAL_GROUPS_FILTER);
        /** "*" is in CSV form with data ids ("123,456,789") */
        matcher.addURI(ContactsContract.AUTHORITY, "data/usagefeedback/*", DATA_USAGE_FEEDBACK_ID);

        matcher.addURI(ContactsContract.AUTHORITY, "groups", GROUPS);
        matcher.addURI(ContactsContract.AUTHORITY, "groups/#", GROUPS_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "groups_summary", GROUPS_SUMMARY);

        matcher.addURI(ContactsContract.AUTHORITY, SyncStateContentProviderHelper.PATH, SYNCSTATE);
        matcher.addURI(ContactsContract.AUTHORITY, SyncStateContentProviderHelper.PATH + "/#",
                SYNCSTATE_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "profile/" + SyncStateContentProviderHelper.PATH,
                PROFILE_SYNCSTATE);
        matcher.addURI(ContactsContract.AUTHORITY,
                "profile/" + SyncStateContentProviderHelper.PATH + "/#",
                PROFILE_SYNCSTATE_ID);

        matcher.addURI(ContactsContract.AUTHORITY, "phone_lookup/*", PHONE_LOOKUP);
        matcher.addURI(ContactsContract.AUTHORITY, "aggregation_exceptions",
                AGGREGATION_EXCEPTIONS);
        matcher.addURI(ContactsContract.AUTHORITY, "aggregation_exceptions/*",
                AGGREGATION_EXCEPTION_ID);

        matcher.addURI(ContactsContract.AUTHORITY, "settings", SETTINGS);

        matcher.addURI(ContactsContract.AUTHORITY, "status_updates", STATUS_UPDATES);
        matcher.addURI(ContactsContract.AUTHORITY, "status_updates/#", STATUS_UPDATES_ID);

        matcher.addURI(ContactsContract.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY,
                SEARCH_SUGGESTIONS);
        matcher.addURI(ContactsContract.AUTHORITY, SearchManager.SUGGEST_URI_PATH_QUERY + "/*",
                SEARCH_SUGGESTIONS);
        matcher.addURI(ContactsContract.AUTHORITY, SearchManager.SUGGEST_URI_PATH_SHORTCUT + "/*",
                SEARCH_SHORTCUT);

        matcher.addURI(ContactsContract.AUTHORITY, "provider_status", PROVIDER_STATUS);

        matcher.addURI(ContactsContract.AUTHORITY, "directories", DIRECTORIES);
        matcher.addURI(ContactsContract.AUTHORITY, "directories/#", DIRECTORIES_ID);

        matcher.addURI(ContactsContract.AUTHORITY, "complete_name", COMPLETE_NAME);

        matcher.addURI(ContactsContract.AUTHORITY, "profile", PROFILE);
        matcher.addURI(ContactsContract.AUTHORITY, "profile/entities", PROFILE_ENTITIES);
        matcher.addURI(ContactsContract.AUTHORITY, "profile/data", PROFILE_DATA);
        matcher.addURI(ContactsContract.AUTHORITY, "profile/data/#", PROFILE_DATA_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "profile/photo", PROFILE_PHOTO);
        matcher.addURI(ContactsContract.AUTHORITY, "profile/display_photo", PROFILE_DISPLAY_PHOTO);
        matcher.addURI(ContactsContract.AUTHORITY, "profile/as_vcard", PROFILE_AS_VCARD);
        matcher.addURI(ContactsContract.AUTHORITY, "profile/raw_contacts", PROFILE_RAW_CONTACTS);
        matcher.addURI(ContactsContract.AUTHORITY, "profile/raw_contacts/#",
                PROFILE_RAW_CONTACTS_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "profile/raw_contacts/#/data",
                PROFILE_RAW_CONTACTS_ID_DATA);
        matcher.addURI(ContactsContract.AUTHORITY, "profile/raw_contacts/#/entity",
                PROFILE_RAW_CONTACTS_ID_ENTITIES);
        matcher.addURI(ContactsContract.AUTHORITY, "profile/status_updates",
                PROFILE_STATUS_UPDATES);
        matcher.addURI(ContactsContract.AUTHORITY, "profile/raw_contact_entities",
                PROFILE_RAW_CONTACT_ENTITIES);

        matcher.addURI(ContactsContract.AUTHORITY, "stream_items", STREAM_ITEMS);
        matcher.addURI(ContactsContract.AUTHORITY, "stream_items/photo", STREAM_ITEMS_PHOTOS);
        matcher.addURI(ContactsContract.AUTHORITY, "stream_items/#", STREAM_ITEMS_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "stream_items/#/photo", STREAM_ITEMS_ID_PHOTOS);
        matcher.addURI(ContactsContract.AUTHORITY, "stream_items/#/photo/#",
                STREAM_ITEMS_ID_PHOTOS_ID);
        matcher.addURI(ContactsContract.AUTHORITY, "stream_items_limit", STREAM_ITEMS_LIMIT);

        matcher.addURI(ContactsContract.AUTHORITY, "display_photo/#", DISPLAY_PHOTO);
        matcher.addURI(ContactsContract.AUTHORITY, "photo_dimensions", PHOTO_DIMENSIONS);

        HashMap<String, Integer> tmpTypeMap = new HashMap<String, Integer>();
        tmpTypeMap.put(DataUsageFeedback.USAGE_TYPE_CALL, DataUsageStatColumns.USAGE_TYPE_INT_CALL);
        tmpTypeMap.put(DataUsageFeedback.USAGE_TYPE_LONG_TEXT,
                DataUsageStatColumns.USAGE_TYPE_INT_LONG_TEXT);
        tmpTypeMap.put(DataUsageFeedback.USAGE_TYPE_SHORT_TEXT,
                DataUsageStatColumns.USAGE_TYPE_INT_SHORT_TEXT);
        sDataUsageTypeMap = Collections.unmodifiableMap(tmpTypeMap);
    }

 


public void addURI(String authority, String path, int code)

 

3. 使用

        final int match = sUriMatcher.match(uri);
        long id = 0;

        switch (match) {
            case SYNCSTATE:
            case PROFILE_SYNCSTATE:
                id = mDbHelper.get().getSyncState().insert(mActiveDb.get(), values);
                break;

            case CONTACTS: {
                insertContact(values);
                break;
            }

            case PROFILE: {
                throw new UnsupportedOperationException(
                        "The profile contact is created automatically");
            }


 

 

 

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