鴻蒙開(kāi)發(fā)組件：?jiǎn)?dòng)與訪(fǎng)問(wèn)DataAbility
啟動(dòng)DataAbility
啟動(dòng)DataAbility會(huì)獲取一個(gè)工具接口類(lèi)對(duì)象（DataAbilityHelper）。啟動(dòng)DataAbility的示例代碼如下：
import featureAbility from '@ohos.ability.featureAbility';
import ability from '@ohos.ability.ability';
let uri: string = 'dataability:///com.samples.famodelabilitydevelop.DataAbility';
let DAHelper: ability.DataAbilityHelper = featureAbility.acquireDataAbilityHelper(uri);
訪(fǎng)問(wèn)DataAbility
訪(fǎng)問(wèn)DataAbility需導(dǎo)入基礎(chǔ)依賴(lài)包，以及獲取與DataAbility子模塊通信的URI字符串。
其中，基礎(chǔ)依賴(lài)包包括： 開(kāi)發(fā)前請(qǐng)熟悉鴻蒙開(kāi)發(fā)指導(dǎo)文檔 ：[gitee.com/li-shizhen-skin/harmony-os/blob/master/README.md]
- @ohos.ability.featureAbility
- @ohos.data.dataAbility
訪(fǎng)問(wèn)DataAbility的示例代碼如下：
創(chuàng)建工具接口類(lèi)對(duì)象。
import featureAbility from '@ohos.ability.featureAbility'; import ohos_data_ability from '@ohos.data.dataAbility'; import ability from '@ohos.ability.ability'; // 作為參數(shù)傳遞的URI,與config中定義的URI的區(qū)別是多了一個(gè)"/",有三個(gè)"/" let uri: string = 'dataability:///com.samples.famodelabilitydevelop.DataAbility'; let DAHelper: ability.DataAbilityHelper = featureAbility.acquireDataAbilityHelper(uri);構(gòu)建數(shù)據(jù)庫(kù)相關(guān)的RDB數(shù)據(jù)。
import ohos_data_ability from '@ohos.data.dataAbility'; import rdb from '@ohos.data.rdb'; let valuesBucket_insert: rdb.ValuesBucket = { name: 'Rose', introduction: 'insert' }; let valuesBucket_update: rdb.ValuesBucket = { name: 'Rose', introduction: 'update' }; let crowd = new Array({ name: 'Rose', introduction: 'batchInsert_one' } as rdb.ValuesBucket, { name: 'Rose', introduction: 'batchInsert_two' } as rdb.ValuesBucket); let columnArray = new Array('id', 'name', 'introduction'); let predicates = new ohos_data_ability.DataAbilityPredicates();注：關(guān)于DataAbilityPredicates的詳細(xì)內(nèi)容，請(qǐng)參考[DataAbility謂詞]。
調(diào)用insert方法向指定的DataAbility子模塊插入數(shù)據(jù)。
import ability from '@ohos.ability.ability'; import featureAbility from '@ohos.ability.featureAbility'; import { BusinessError } from '@ohos.base'; import ohos_data_ability from '@ohos.data.dataAbility'; import rdb from '@ohos.data.rdb'; import promptAction from '@ohos.promptAction'; import hilog from '@ohos.hilog'; const TAG: string = 'PageDataAbility'; // callback方式調(diào)用: const domain: number = 0xFF00; @Entry @Component struct PageDataAbility { private valuesBucket_insert: rdb.ValuesBucket = { name: 'Rose', introduction: 'insert' }; private uri = 'dataability:///com.samples.famodelabilitydevelop.DataAbility'; private DAHelper = featureAbility.acquireDataAbilityHelper(this.uri); build() { Column() { // ... List({ initialIndex: 0 }) { // ... ListItemGroup() { ListItem() { Flex({ justifyContent: FlexAlign.SpaceBetween, alignContent: FlexAlign.Center }) { // ... } .onClick(() = > { // callback方式調(diào)用: this.DAHelper.insert(this.uri, this.valuesBucket_insert, (error: BusinessError, data: number) = > { if (error && error.code !== 0) { promptAction.showToast({ message: $r('app.string.insert_failed_toast') }); } else { promptAction.showToast({ message: $r('app.string.insert_success_toast') }); } hilog.info(domain, TAG, 'DAHelper insert result: ' + data + ', error: ' + JSON.stringify(error)); } ); }) } // ... } // ... } // ... } // ... } }import ability from '@ohos.ability.ability'; import featureAbility from '@ohos.ability.featureAbility'; import { BusinessError } from '@ohos.base'; import ohos_data_ability from '@ohos.data.dataAbility'; import rdb from '@ohos.data.rdb'; import promptAction from '@ohos.promptAction'; import hilog from '@ohos.hilog'; const TAG: string = 'PageDataAbility'; const domain: number = 0xFF00; @Entry @Component struct PageDataAbility { private valuesBucket_insert: rdb.ValuesBucket = { name: 'Rose', introduction: 'insert' }; private uri = 'dataability:///com.samples.famodelabilitydevelop.DataAbility'; private DAHelper = featureAbility.acquireDataAbilityHelper(this.uri); build() { Column() { // ... List({ initialIndex: 0 }) { // ... ListItemGroup() { ListItem() { Flex({ justifyContent: FlexAlign.SpaceBetween, alignContent: FlexAlign.Center }) { // ... } .onClick(() = > { // promise方式調(diào)用(await需要在async方法中使用): this.DAHelper.insert(this.uri, this.valuesBucket_insert).then((datainsert) = > { promptAction.showToast({ message: $r('app.string.insert_success_toast') }); hilog.info(domain, TAG, 'DAHelper insert result: ' + datainsert); }).catch((error: BusinessError) = > { promptAction.showToast({ message: $r('app.string.insert_failed_toast') }); hilog.error(domain, TAG, `DAHelper insert failed. Cause: ${error.message}`); }); }) } // ... } // ... } // ... } // ... } }調(diào)用delete方法刪除DataAbility子模塊中指定的數(shù)據(jù)。
import ability from '@ohos.ability.ability'; import featureAbility from '@ohos.ability.featureAbility'; import { BusinessError } from '@ohos.base'; import ohos_data_ability from '@ohos.data.dataAbility'; import rdb from '@ohos.data.rdb'; import promptAction from '@ohos.promptAction'; import hilog from '@ohos.hilog'; const TAG: string = 'PageDataAbility'; const domain: number = 0xFF00; @Entry @Component struct PageDataAbility { private predicates = new ohos_data_ability.DataAbilityPredicates(); private uri = 'dataability:///com.samples.famodelabilitydevelop.DataAbility'; private DAHelper = featureAbility.acquireDataAbilityHelper(this.uri); build() { Column() { // ... List({ initialIndex: 0 }) { // ... ListItemGroup() { ListItem() { Flex({ justifyContent: FlexAlign.SpaceBetween, alignContent: FlexAlign.Center }) { // ... } .onClick(() = > { // callback方式調(diào)用: this.DAHelper.delete(this.uri, this.predicates, (error, data) = > { if (error && error.code !== 0) { promptAction.showToast({ message: $r('app.string.delete_failed_toast') }); } else { promptAction.showToast({ message: $r('app.string.delete_success_toast') }); } hilog.info(domain, TAG, 'DAHelper delete result: ' + data + ', error: ' + JSON.stringify(error)); } ); }) } // ... } // ... } // ... } // ... } }import ability from '@ohos.ability.ability'; import featureAbility from '@ohos.ability.featureAbility'; import { BusinessError } from '@ohos.base'; import ohos_data_ability from '@ohos.data.dataAbility'; import rdb from '@ohos.data.rdb'; import promptAction from '@ohos.promptAction'; import hilog from '@ohos.hilog'; const TAG: string = 'PageDataAbility'; const domain: number = 0xFF00; @Entry @Component struct PageDataAbility { private predicates = new ohos_data_ability.DataAbilityPredicates(); private uri = 'dataability:///com.samples.famodelabilitydevelop.DataAbility'; private DAHelper = featureAbility.acquireDataAbilityHelper(this.uri); build() { Column() { // ... List({ initialIndex: 0 }) { // ... ListItemGroup() { ListItem() { Flex({ justifyContent: FlexAlign.SpaceBetween, alignContent: FlexAlign.Center }) { // ... } .onClick(() = > { // promise方式調(diào)用(await需要在async方法中使用): this.DAHelper.delete(this.uri, this.predicates).then((datadelete) = > { promptAction.showToast({ message: $r('app.string.delete_success_toast') }); hilog.info(domain, TAG, 'DAHelper delete result: ' + datadelete); }).catch((error: BusinessError) = > { promptAction.showToast({ message: $r('app.string.delete_failed_toast') }); hilog.error(domain, TAG, `DAHelper delete failed. Cause: ${error.message}`); }); }) } // ... } // ... } // ... } // ... } }調(diào)用update方法更新指定DataAbility子模塊中的數(shù)據(jù)。
import ability from '@ohos.ability.ability'; import featureAbility from '@ohos.ability.featureAbility'; import { BusinessError } from '@ohos.base'; import ohos_data_ability from '@ohos.data.dataAbility'; import rdb from '@ohos.data.rdb'; import promptAction from '@ohos.promptAction'; import hilog from '@ohos.hilog'; const TAG: string = 'PageDataAbility'; const domain: number = 0xFF00; @Entry @Component struct PageDataAbility { private valuesBucket_update: rdb.ValuesBucket = { name: 'Rose', introduction: 'update' }; private predicates = new ohos_data_ability.DataAbilityPredicates(); private uri = 'dataability:///com.samples.famodelabilitydevelop.DataAbility'; private DAHelper = featureAbility.acquireDataAbilityHelper(this.uri); build() { Column() { // ... List({ initialIndex: 0 }) { // ... ListItemGroup() { ListItem() { Flex({ justifyContent: FlexAlign.SpaceBetween, alignContent: FlexAlign.Center }) { // ... } .onClick(() = > { // callback方式調(diào)用: this.predicates.equalTo('name', 'Rose'); this.DAHelper.update(this.uri, this.valuesBucket_update, this.predicates, (error, data) = > { if (error && error.code !== 0) { promptAction.showToast({ message: $r('app.string.update_failed_toast') }); } else { promptAction.showToast({ message: $r('app.string.update_success_toast') }); } hilog.info(domain, TAG, 'DAHelper update result: ' + data + ', error: ' + JSON.stringify(error)); } ); }) } // ... } // ... } // ... } // ... } }import ability from '@ohos.ability.ability'; import featureAbility from '@ohos.ability.featureAbility'; import { BusinessError } from '@ohos.base'; import ohos_data_ability from '@ohos.data.dataAbility'; import rdb from '@ohos.data.rdb'; import promptAction from '@ohos.promptAction'; import hilog from '@ohos.hilog'; const TAG: string = 'PageDataAbility'; const domain: number = 0xFF00; @Entry @Component struct PageDataAbility { private valuesBucket_update: rdb.ValuesBucket = { name: 'Rose', introduction: 'update' }; private predicates = new ohos_data_ability.DataAbilityPredicates(); private uri = 'dataability:///com.samples.famodelabilitydevelop.DataAbility'; private DAHelper = featureAbility.acquireDataAbilityHelper(this.uri); build() { Column() { // ... List({ initialIndex: 0 }) { // ... ListItemGroup() { ListItem() { Flex({ justifyContent: FlexAlign.SpaceBetween, alignContent: FlexAlign.Center }) { // ... } .onClick(() = > { // promise方式調(diào)用(await需要在async方法中使用): this.predicates.equalTo('name', 'Rose'); this.DAHelper.update(this.uri, this.valuesBucket_update, this.predicates).then((dataupdate) = > { promptAction.showToast({ message: $r('app.string.update_success_toast') }); hilog.info(domain, TAG, 'DAHelper update result: ' + dataupdate); }).catch((error: BusinessError) = > { promptAction.showToast({ message: $r('app.string.update_failed_toast') }); hilog.error(domain, TAG, `DAHelper update failed. Cause: ${error.message}`); }); }) } // ... } // ... } // ... } // ... } }調(diào)用query方法在指定的DataAbility子模塊中查找數(shù)據(jù)。
import ability from '@ohos.ability.ability'; import featureAbility from '@ohos.ability.featureAbility'; import { BusinessError } from '@ohos.base'; import ohos_data_ability from '@ohos.data.dataAbility'; import rdb from '@ohos.data.rdb'; import promptAction from '@ohos.promptAction'; import hilog from '@ohos.hilog'; const TAG: string = 'PageDataAbility'; const domain: number = 0xFF00; @Entry @Component struct PageDataAbility { private columnArray = new Array('id', 'name', 'introduction'); private predicates = new ohos_data_ability.DataAbilityPredicates(); private uri = 'dataability:///com.samples.famodelabilitydevelop.DataAbility'; private DAHelper = featureAbility.acquireDataAbilityHelper(this.uri); build() { Column() { // ... List({ initialIndex: 0 }) { // ... ListItemGroup() { ListItem() { Flex({ justifyContent: FlexAlign.SpaceBetween, alignContent: FlexAlign.Center }) { // ... } .onClick(() = > { // callback方式調(diào)用: this.predicates.equalTo('name', 'Rose'); this.DAHelper.query(this.uri, this.columnArray, this.predicates, (error, data) = > { if (error && error.code !== 0) { promptAction.showToast({ message: $r('app.string.query_failed_toast') }); hilog.error(domain, TAG, `DAHelper query failed. Cause: ${error.message}`); } else { promptAction.showToast({ message: $r('app.string.query_success_toast') }); } // ResultSet是一個(gè)數(shù)據(jù)集合的游標(biāo)，默認(rèn)指向第-1個(gè)記錄，有效的數(shù)據(jù)從0開(kāi)始。 while (data.goToNextRow()) { const id = data.getLong(data.getColumnIndex('id')); const name = data.getString(data.getColumnIndex('name')); const introduction = data.getString(data.getColumnIndex('introduction')); hilog.info(domain, TAG, `DAHelper query result:id = [${id}], name = [${name}], introduction = [${introduction}]`); } // 釋放數(shù)據(jù)集的內(nèi)存 data.close(); } ); }) } // ... } // ... } // ... } // ... } }import ability from '@ohos.ability.ability'; import featureAbility from '@ohos.ability.featureAbility'; import { BusinessError } from '@ohos.base'; import ohos_data_ability from '@ohos.data.dataAbility'; import rdb from '@ohos.data.rdb'; import promptAction from '@ohos.promptAction'; import hilog from '@ohos.hilog'; const TAG: string = 'PageDataAbility'; const domain: number = 0xFF00; @Entry @Component struct PageDataAbility { private columnArray = new Array('id', 'name', 'introduction'); private predicates = new ohos_data_ability.DataAbilityPredicates(); private uri = 'dataability:///com.samples.famodelabilitydevelop.DataAbility'; private DAHelper = featureAbility.acquireDataAbilityHelper(this.uri); build() { Column() { // ... List({ initialIndex: 0 }) { // ... ListItemGroup() { ListItem() { Flex({ justifyContent: FlexAlign.SpaceBetween, alignContent: FlexAlign.Center }) { // ... } .onClick(() = > { // promise方式調(diào)用(await需要在async方法中使用): this.predicates.equalTo('name', 'Rose'); this.DAHelper.query(this.uri, this.columnArray, this.predicates).then((dataquery) = > { promptAction.showToast({ message: $r('app.string.query_success_toast') }); // ResultSet是一個(gè)數(shù)據(jù)集合的游標(biāo)，默認(rèn)指向第-1個(gè)記錄，有效的數(shù)據(jù)從0開(kāi)始。 while (dataquery.goToNextRow()) { const id = dataquery.getLong(dataquery.getColumnIndex('id')); const name = dataquery.getString(dataquery.getColumnIndex('name')); const introduction = dataquery.getString(dataquery.getColumnIndex('introduction')); hilog.info(domain, TAG, `DAHelper query result:id = [${id}], name = [${name}], introduction = [${introduction}]`); } // 釋放數(shù)據(jù)集的內(nèi)存 dataquery.close(); }).catch((error: BusinessError) = > { promptAction.showToast({ message: $r('app.string.query_failed_toast') }); hilog.error(domain, TAG, `DAHelper query failed. Cause: ${error.message}`); }); }) } // ... } // ... } // ... } // ... } }調(diào)用batchInsert方法向指定的DataAbility子模塊批量插入數(shù)據(jù)。
import ability from '@ohos.ability.ability'; import featureAbility from '@ohos.ability.featureAbility'; import { BusinessError } from '@ohos.base'; import ohos_data_ability from '@ohos.data.dataAbility'; import rdb from '@ohos.data.rdb'; import promptAction from '@ohos.promptAction'; import hilog from '@ohos.hilog'; const TAG: string = 'PageDataAbility'; const domain: number = 0xFF00; @Entry @Component struct PageDataAbility { private crowd = new Array({ name: 'Rose', introduction: 'batchInsert_one' } as rdb.ValuesBucket, { name: 'Rose', introduction: 'batchInsert_two' } as rdb.ValuesBucket); private uri = 'dataability:///com.samples.famodelabilitydevelop.DataAbility'; private DAHelper = featureAbility.acquireDataAbilityHelper(this.uri); build() { Column() { // ... List({ initialIndex: 0 }) { // ... ListItemGroup() { ListItem() { Flex({ justifyContent: FlexAlign.SpaceBetween, alignContent: FlexAlign.Center }) { // ... } .onClick(() = > { // callback方式調(diào)用: this.DAHelper.batchInsert(this.uri, this.crowd, (error, data) = > { if (error && error.code !== 0) { promptAction.showToast({ message: $r('app.string.batchInsert_failed_toast') }); } else { promptAction.showToast({ message: $r('app.string.batchInsert_success_toast') }); } hilog.info(domain, TAG, 'DAHelper batchInsert result: ' + data + ', error: ' + JSON.stringify(error)); } ); }) } // ... } // ... } // ... } // ... } }import ability from '@ohos.ability.ability'; import featureAbility from '@ohos.ability.featureAbility'; import { BusinessError } from '@ohos.base'; import ohos_data_ability from '@ohos.data.dataAbility'; import rdb from '@ohos.data.rdb'; import promptAction from '@ohos.promptAction'; import hilog from '@ohos.hilog'; const TAG: string = 'PageDataAbility'; const domain: number = 0xFF00; @Entry @Component struct PageDataAbility { private crowd = new Array({ name: 'Rose', introduction: 'batchInsert_one' } as rdb.ValuesBucket, { name: 'Rose', introduction: 'batchInsert_two' } as rdb.ValuesBucket); private uri = 'dataability:///com.samples.famodelabilitydevelop.DataAbility'; private DAHelper = featureAbility.acquireDataAbilityHelper(this.uri); build() { Column() { // ... List({ initialIndex: 0 }) { // ... ListItemGroup() { ListItem() { Flex({ justifyContent: FlexAlign.SpaceBetween, alignContent: FlexAlign.Center }) { // ... } .onClick(() = > { // promise方式調(diào)用(await需要在async方法中使用): this.DAHelper.batchInsert(this.uri, this.crowd).then((databatchInsert) = > { promptAction.showToast({ message: $r('app.string.batchInsert_success_toast') }); hilog.info(domain, TAG, 'DAHelper batchInsert result: ' + databatchInsert); }).catch((error: BusinessError) = > { promptAction.showToast({ message: $r('app.string.batchInsert_failed_toast') }); hilog.error(domain, TAG, `DAHelper batchInsert failed. Cause: ${error.message}`); }); }) } // ... } // ... } // ... } // ... } }調(diào)用executeBatch方法向指定的DataAbility子模塊進(jìn)行數(shù)據(jù)的批量處理。
import ability from '@ohos.ability.ability'; import featureAbility from '@ohos.ability.featureAbility'; import { BusinessError } from '@ohos.base'; import ohos_data_ability from '@ohos.data.dataAbility'; import rdb from '@ohos.data.rdb'; import promptAction from '@ohos.promptAction'; import hilog from '@ohos.hilog'; const TAG: string = 'PageDataAbility'; const domain: number = 0xFF00; @Entry @Component struct PageDataAbility { private predicates = new ohos_data_ability.DataAbilityPredicates(); private uri = 'dataability:///com.samples.famodelabilitydevelop.DataAbility'; private DAHelper = featureAbility.acquireDataAbilityHelper(this.uri); build() { Column() { // ... List({ initialIndex: 0 }) { // ... ListItemGroup() { ListItem() { Flex({ justifyContent: FlexAlign.SpaceBetween, alignContent: FlexAlign.Center }) { // ... } .onClick(() = > { // callback方式調(diào)用: let operations: Array< ability.DataAbilityOperation > = [{ uri: this.uri, type: featureAbility.DataAbilityOperationType.TYPE_INSERT, valuesBucket: { name: 'Rose', introduction: 'executeBatch' }, predicates: this.predicates, expectedCount: 0, predicatesBackReferences: undefined, interrupted: true, }]; this.DAHelper.executeBatch(this.uri, operations, (error, data) = > { if (error && error.code !== 0) { promptAction.showToast({ message: $r('app.string.executeBatch_failed_toast') }); } else { promptAction.showToast({ message: $r('app.string.executeBatch_success_toast') }); } hilog.info(domain, TAG, `DAHelper executeBatch, result: ` + JSON.stringify(data) + ', error: ' + JSON.stringify(error)); }); }) } // ... } // ... } // ... } // ... } }import ability from '@ohos.ability.ability'; import featureAbility from '@ohos.ability.featureAbility'; import { BusinessError } from '@ohos.base'; import ohos_data_ability from '@ohos.data.dataAbility'; import rdb from '@ohos.data.rdb'; import promptAction from '@ohos.promptAction'; import hilog from '@ohos.hilog'; const TAG: string = 'PageDataAbility'; const domain: number = 0xFF00; @Entry @Component struct PageDataAbility { private predicates = new ohos_data_ability.DataAbilityPredicates(); private uri = 'dataability:///com.samples.famodelabilitydevelop.DataAbility'; private DAHelper = featureAbility.acquireDataAbilityHelper(this.uri); build() { Column() { // ... List({ initialIndex: 0 }) { // ... ListItemGroup() { ListItem() { Flex({ justifyContent: FlexAlign.SpaceBetween, alignContent: FlexAlign.Center }) { // ... } .onClick(() = > { // promise方式調(diào)用(await需要在async方法中使用): let operations: Array< ability.DataAbilityOperation > = [{ uri: this.uri, type: featureAbility.DataAbilityOperationType.TYPE_INSERT, valuesBucket: { name: 'Rose', introduction: 'executeBatch' }, predicates: this.predicates, expectedCount: 0, predicatesBackReferences: undefined, interrupted: true, }]; this.DAHelper.executeBatch(this.uri, operations).then((dataquery) = > { promptAction.showToast({ message: $r('app.string.executeBatch_success_toast') }); hilog.info(domain, TAG, 'DAHelper executeBatch result: ' + JSON.stringify(dataquery)); }).catch((error: BusinessError) = > { promptAction.showToast({ message: $r('app.string.executeBatch_failed_toast') }); hilog.error(domain, TAG, `DAHelper executeBatch failed. Cause: ${error.message}`); }); }) } // ... } // ... } // ... } // ... } }
審核編輯 黃宇
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的一站式集成開(kāi)發(fā)環(huán)境（IDE），專(zhuān)為鴻蒙操作系統(tǒng)（HarmonyOS Next）應(yīng)用和服務(wù)開(kāi)發(fā)設(shè)計(jì) DevEco Studio，掌握基本操作和開(kāi)發(fā)流程。
## 2. 安裝與配置
1
發(fā)表于 06-11 17:18
FA模型的DataAbility的切換介紹
，開(kāi)發(fā)者需根據(jù)業(yè)務(wù)功能重新實(shí)現(xiàn)。
三方應(yīng)用DataAbility改造為公共模塊
Stage模型三方應(yīng)用不能對(duì)其他三方提供數(shù)據(jù)，應(yīng)用需要根據(jù)具體業(yè)務(wù)選擇切換方案。
DataAbility業(yè)務(wù)類(lèi)型切換
發(fā)表于 06-06 08:10
開(kāi)源鴻蒙應(yīng)用技術(shù)組件共建計(jì)劃啟動(dòng)
近日，開(kāi)源鴻蒙開(kāi)發(fā)者大會(huì)2025（OHDC.2025，以下簡(jiǎn)稱(chēng)“大會(huì)”）在深圳成功舉辦。開(kāi)源四年多來(lái)，開(kāi)源鴻蒙代碼規(guī)模已達(dá) 1.3 億多行，代碼貢獻(xiàn)者達(dá) 8600 多位，超過(guò) 1100 款軟硬件產(chǎn)品
FA模型訪(fǎng)問(wèn)Stage模型DataShareExtensionAbility說(shuō)明
DataShareHelper的接口。但是這種方法需要開(kāi)發(fā)者修改原客戶(hù)端代碼的URI，做不到無(wú)感知切換。
因此DataAbilityHelper不能僅依賴(lài)URI的前綴決定訪(fǎng)問(wèn)DataAbility還是
發(fā)表于 06-04 07:53
潤(rùn)和軟件旗下潤(rùn)開(kāi)鴻亮相開(kāi)源鴻蒙開(kāi)發(fā)者大會(huì)2025
近日，開(kāi)源鴻蒙開(kāi)發(fā)者大會(huì)2025（OHDC.2025）于深圳再啟新篇，會(huì)上正式發(fā)布了開(kāi)源鴻蒙5.1 Release版本，并進(jìn)行開(kāi)源鴻蒙應(yīng)用技術(shù)組件
迅龍軟件應(yīng)邀出席開(kāi)源鴻蒙開(kāi)發(fā)者大會(huì)2025，AI分論壇發(fā)表主旨演講
5月24日，開(kāi)源鴻蒙開(kāi)發(fā)者大會(huì)2025（OHDC.2025）在深圳隆重開(kāi)幕。會(huì)上正式發(fā)布了開(kāi)源鴻蒙5.1Release版本，并進(jìn)行開(kāi)源鴻蒙應(yīng)用技術(shù)組
DataAbility組件概述介紹
DataAbility組件概述
DataAbility，即\"使用Data模板的Ability\"，主要用于對(duì)外部提供統(tǒng)一的數(shù)據(jù)訪(fǎng)問(wèn)抽象，不提供用戶(hù)交互界面
發(fā)表于 05-28 08:19
開(kāi)源鴻蒙開(kāi)發(fā)者大會(huì)2025圓滿(mǎn)閉幕，觸覺(jué)智能Purple Pi OH榮獲明星開(kāi)發(fā)板
版本，并進(jìn)行開(kāi)源鴻蒙應(yīng)用技術(shù)組件共建啟動(dòng)、開(kāi)源鴻蒙AIAgent技術(shù)共建啟動(dòng)等重要儀式，同時(shí)設(shè)立八大主題分論壇，邀請(qǐng)業(yè)界專(zhuān)家、
2025開(kāi)源鴻蒙開(kāi)發(fā)者大會(huì)圓滿(mǎn)落幕
近日，開(kāi)源鴻蒙開(kāi)發(fā)者大會(huì)2025（OHDC.2025，簡(jiǎn)稱(chēng)“大會(huì)”）在深圳隆重開(kāi)幕。大會(huì)正式發(fā)布了開(kāi)源鴻蒙5.1 Release版本，舉行了開(kāi)源鴻蒙應(yīng)用技術(shù)
“RdbStore”上線(xiàn)開(kāi)源鴻蒙社區(qū) 助力鴻蒙應(yīng)用數(shù)據(jù)訪(fǎng)問(wèn)效率大幅提升
、品質(zhì)調(diào)優(yōu)、全鏈路運(yùn)維等，能夠有效提升應(yīng)用啟動(dòng)和訪(fǎng)問(wèn)速度，助力應(yīng)用高效開(kāi)發(fā)和性能提升。 性能強(qiáng)大：數(shù)據(jù)訪(fǎng)問(wèn)和初始化耗時(shí)大幅優(yōu)化 在應(yīng)用開(kāi)發(fā)過(guò)
開(kāi)源啦！！！基于鴻蒙ArkTS封裝的圖表組件《McCharts》，大家快來(lái)一起共創(chuàng)
的地方請(qǐng)大家高抬貴手，寬容一下，謝謝。
這次主要是給大家?guī)?lái)一個(gè)重磅消息，就是我自己使用鴻蒙ArkTS語(yǔ)法開(kāi)發(fā)的圖表組件今日正式開(kāi)源了。為什么？原因有兩點(diǎn)吧！
鴻蒙是國(guó)產(chǎn)的操作系統(tǒng)，
發(fā)表于 03-15 15:21
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