鸿蒙OS开发案例：【Stage模型卡片】
Stage模型卡片
介绍
本示例展示了Stage模型卡片提供方的创建与使用。
用到了卡片扩展模块接口，[@ohos.app.form.FormExtensionAbility] 。
卡片信息和状态等相关类型和枚举接口，[@ohos.app.form.formInfo] 。
卡片提供方相关接口的能力接口，[@ohos.app.form.formProvider] 。
应用组件间的信息传递接口，[@ohos.app.ability.Want]。
效果预览
概念
Ability：Ability是应用所具备能力的抽象，也是应用程序的重要组成部分。Ability是系统调度应用的最小单元，是能够完成一个独立功能的组件。
具体实现
1、在module.json5文件添加拓展能力，类型为卡片，并设置卡片入口srcEntrance和卡片元数据metadata。[源码参考] 例如："metadata": [ { "name": "ohos.extension.form", "resource": "$profile:form_config" }。
/*
* Copyright (c) 2022 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
{
"module": {
"name": "entry",
"type": "entry",
"srcEntrance": "./ets/Application/AbilityStage.ts",
"description": "$string:entry_desc",
"mainElement": "MainAbility",
"deviceTypes": [
"default",
"tablet",
],
"deliveryWithInstall": true,
"installationFree": false,
"pages": "$profile:main_pages",
"uiSyntax": "ets",
"abilities": [
{
"name": "ohos.samples.formextability.MainAbility",
"srcEntrance": "./ets/MainAbility/MainAbility.ts",
"description": "$string:MainAbility_desc",
"icon": "$media:icon",
"label": "$string:MainAbility_label",
"visible": true,
"skills": [
{
"entities": [
"entity.system.home",
],
"actions": [
"action.system.home",
],
},
],
"startWindowIcon": "$media:icon",
"startWindowBackground": "$color:white"
},
],
"extensionAbilities": [
{
"name": "FormAbility",
"srcEntrance": "./ets/FormAbility/FormAbility.ts",
"label": "$string:form_FormAbility_label",
"description": "$string:form_FormAbility_desc",
"type": "form",
"metadata": [
{
"name": "ohos.extension.form",
"resource": "$profile:form_config",
},
],
},
],
},
}
2、初始化卡片：通过实现@ohos.app.form.FormExtensionAbility卡片操作类，在卡片对象首次被创建时，初始化卡片绑定数据为空，并将卡片状态设置为就绪状态READY。 例如：onCreate(){ formBindingData.createFormBindingData({}) onAcquireFormState(want) { return formInfo.FormState.READY }。
3、配置卡片：用js编写相应的卡片，将卡片配置到resources/base/profile/form_config, [源码参考]。
{
"forms": [
{
"name": "widget",
"description": "This is a service widget.",
"src": "./js/widget/pages/index/index",
"formConfigAbility": "ability://ohos.samples.formextability.MainAbility",
"window": {
"designWidth": 720,
"autoDesignWidth": true
},
"colorMode": "auto",
"isDefault": true,
"updateEnabled": true,
"scheduledUpdateTime": "10:30",
"updateDuration": 0,
"defaultDimension": "2*4",
"supportDimensions": [
"2*4",
"4*4"
]
}
]
}
- 修改数据卡片的订阅条件的功能封装在ModifyConditionIndex.ets中，源码参考：[ModifyConditionIndex.ets]
/*
* Copyright (c) 2023 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import base from '@ohos.base';
import common from '@ohos.app.ability.common';
import dataShare from '@ohos.data.dataShare';
import formBindingData from '@ohos.app.form.formBindingData';
import formInfo from '@ohos.app.form.formInfo';
import formObserver from '@ohos.app.form.formObserver';
import formProvider from '@ohos.app.form.formProvider';
import Logger from '../../common/Logger';
import { getPersistentConditionID, savePersistentConditionID } from '../../common/StatePersistence';
const TAG = '[Sample_ModifyConditionIndex]';
let dataShareHelper: dataShare.DataShareHelper;
let conditionID = '110000';
let context: common.UIAbilityContext;
function updateCardDisplayContent(runningFormInfo: formInfo.RunningFormInfo): void {
Logger.info(`TAG updateCardDisplayContent bundle: ${runningFormInfo.bundleName}`);
let template: dataShare.Template = {
predicates: {
list: `select cityTemperature as cityTemperature, cityName as cityName from TBL00 where cityId = ${conditionID}`
},
scheduler: ''
};
dataShare.createDataShareHelper(context, 'datashareproxy://ohos.samples.formextability', { isProxy: true })
.then((data: dataShare.DataShareHelper) = > {
dataShareHelper = data;
dataShareHelper.addTemplate('datashareproxy://ohos.samples.formextability/test', conditionID, template);
});
class ProxiesType {
key: string = '';
subscriberId: string = '';
};
let proxies = [{
key: 'datashareproxy://ohos.samples.formextability/test',
subscriberId: conditionID
} as ProxiesType];
let formData: string = '';
Logger.info(TAG, `formData: ${JSON.stringify(formData)}`);
let formBinding = formBindingData.createFormBindingData(formData);
formBinding['proxies'] = proxies;
formProvider.updateForm(runningFormInfo.formId, formBinding).then(() = > {
Logger.info(TAG, `update Form OK formData is ${JSON.stringify(formBinding)}`);
}).catch((err: base.BusinessError< void >) = > {
Logger.error(TAG, `update Form Failed ${JSON.stringify(err)}`);
});
}
function modifyCondition(): void {
let formInstanceFilterArkTS: formInfo.FormProviderFilter = {
bundleName: 'ohos.samples.formextability',
abilityName: 'EntryFormAbility',
formName: 'persistentWidget',
moduleName: 'persistentProxyForm'
};
let formInstanceFilterJS: formInfo.FormProviderFilter = {
bundleName: 'ohos.samples.formextability',
abilityName: 'EntryFormAbility',
formName: 'persistentWidgetJS',
moduleName: 'persistentProxyForm'
};
formObserver.getRunningFormInfosByFilter(formInstanceFilterArkTS).then((data: Array< formInfo.RunningFormInfo >) = > {
Logger.info(TAG, `getRunningFormInfosByFilter data: ${JSON.stringify(data)}`);
AppStorage.SetOrCreate('runningFormInfo', JSON.stringify(data));
data.forEach(updateCardDisplayContent);
}).catch((err: base.BusinessError< void >) = > {
Logger.error(TAG, `getRunningFormInfosByFilter err is ${JSON.stringify(err)}`);
});
formObserver.getRunningFormInfosByFilter(formInstanceFilterJS).then((data: Array< formInfo.RunningFormInfo >) = > {
Logger.info(TAG, `getRunningFormInfosByFilter data: ${JSON.stringify(data)}`);
AppStorage.SetOrCreate('runningFormInfo', JSON.stringify(data));
data.forEach(updateCardDisplayContent);
}).catch((err: base.BusinessError< void >) = > {
Logger.error(TAG, `getRunningFormInfosByFilter err is ${JSON.stringify(err)}`);
});
}
@Entry
@Component
struct IndexThi {
@State persistentConditionID: string = '';
@State persistentSwitchFlag: boolean = true;
aboutToAppear() {
context = getContext(this) as common.UIAbilityContext;
this.persistentConditionID = getPersistentConditionID(context);
if (typeof this.persistentConditionID !== 'string' || this.persistentConditionID === '') {
this.persistentConditionID = '110000'
}
this.persistentSwitchFlag = this.persistentConditionID.localeCompare('110000') === 0;
Logger.debug(TAG, `persistentSwitchFlag : ${JSON.stringify(this.persistentSwitchFlag)}`);
}
aboutToDisappear() {
savePersistentConditionID(context, this.persistentConditionID);
}
build() {
Row() {
Column({ space: 150 }) {
Text($r('app.string.subscription_conditions'))
.fontColor('#182431')
.fontSize(40)
.lineHeight(41)
.fontWeight('Bold')
Column() {
Text($r('app.string.modify_subscription_conditions'))
.fontSize(28)
.margin({ bottom: 20 })
Row() {
Flex({ justifyContent: FlexAlign.SpaceEvenly }) {
Column() {
Text($r('app.string.city_sy'))
.margin({ bottom: 10 })
Radio({ value: 'sy', group: 'modifyConditionGroup' })
.checked(this.persistentSwitchFlag)
.height(24)
.width(24)
.radioStyle({
checkedBackgroundColor: $r('sys.color.ohos_id_color_text_primary_activated'),
uncheckedBorderColor: $r('sys.color.ohos_id_color_switch_outline_off'),
indicatorColor: $r('sys.color.ohos_id_color_foreground_contrary')
})
.onChange((isChecked: boolean) = > {
Logger.info('firstRadio status is ' + isChecked);
if (isChecked) {
conditionID = '110000';
this.persistentConditionID = conditionID;
modifyCondition();
}
})
}
Column() {
Text($r('app.string.city_hz'))
.margin({ bottom: 10 })
Radio({ value: 'hz', group: 'modifyConditionGroup' })
.checked(!this.persistentSwitchFlag)
.height(24)
.width(24)
.radioStyle({
checkedBackgroundColor: $r('sys.color.ohos_id_color_text_primary_activated'),
uncheckedBorderColor: $r('sys.color.ohos_id_color_switch_outline_off'),
indicatorColor: $r('sys.color.ohos_id_color_foreground_contrary')
})
.onChange((isChecked: boolean) = > {
Logger.info('secondRadio status is ' + isChecked);
if (isChecked) {
conditionID = '310000';
this.persistentConditionID = conditionID;
modifyCondition();
}
})
}
}
}
.width('70%')
}
.width('100%')
}
}
.height('100%')
}
}
及[ModifyConditionIndex.ets]。
/*
* Copyright (c) 2023 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import base from '@ohos.base';
import common from '@ohos.app.ability.common';
import formBindingData from '@ohos.app.form.formBindingData';
import formInfo from '@ohos.app.form.formInfo';
import formObserver from '@ohos.app.form.formObserver';
import formProvider from '@ohos.app.form.formProvider';
import Logger from '../../common/Logger';
import { getProcessConditionID, saveProcessConditionID } from '../../common/StatePersistence';
const TAG = '[Sample_ModifyConditionIndex]';
let conditionID = '110000';
let context: common.UIAbilityContext;
function updateCardDisplayContent(runningFormInfo: formInfo.RunningFormInfo): void {
Logger.info(TAG, `updateCardDisplayContent bundle: ${runningFormInfo.bundleName}`);
let proxies:Array< formBindingData.ProxyData > = [
{
key: 'cityName',
subscriberId: conditionID
},
{
key: 'cityTemperature',
subscriberId: conditionID
}
];
let formBinding = formBindingData.createFormBindingData();
formBinding['proxies'] = proxies;
formProvider.updateForm(runningFormInfo.formId, formBinding).then(() = > {
Logger.info(TAG, `update Form OK formData is ${JSON.stringify(formBinding)}`);
}).catch((err: base.BusinessError< void >) = > {
Logger.error(TAG, `update Form Failed ${JSON.stringify(err)}`);
});
}
function modifyCondition(): void {
let formInstanceFilter: formInfo.FormProviderFilter = {
bundleName: 'ohos.samples.formextability',
moduleName: 'processProxyForm'
};
formObserver.getRunningFormInfosByFilter(formInstanceFilter).then((data: Array< formInfo.RunningFormInfo >) = > {
Logger.info(TAG, `getRunningFormInfosByFilter data: ${JSON.stringify(data)}`);
AppStorage.SetOrCreate('runningFormInfo', JSON.stringify(data));
data.forEach(updateCardDisplayContent);
}).catch((err: base.BusinessError< void >) = > {
Logger.error(TAG, `getRunningFormInfosByFilter err is ${JSON.stringify(err)}`);
});
}
@Entry
@Component
struct IndexThi {
@State processConditionID: string = '';
@State processSwitchFlag: boolean = true;
aboutToAppear() {
context = getContext(this) as common.UIAbilityContext;
this.processConditionID = getProcessConditionID(context);
if (typeof this.processConditionID !== 'string' || this.processConditionID === '') {
this.processConditionID = '110000'
}
this.processSwitchFlag = this.processConditionID.localeCompare('110000') === 0;
Logger.debug(TAG, `persistentSwitchFlag : ${JSON.stringify(this.processSwitchFlag)}`);
}
aboutToDisappear() {
saveProcessConditionID(context, this.processConditionID);
}
build() {
Row() {
Column({ space: 150 }) {
Text($r('app.string.subscription_conditions'))
.fontColor('#182431')
.fontSize(40)
.lineHeight(41)
.fontWeight('100%')
Column() {
Text($r('app.string.modify_subscription_conditions'))
.fontSize(28)
.margin({ bottom: 20 })
Row() {
Flex({ justifyContent: FlexAlign.SpaceEvenly }) {
Column() {
Text($r('app.string.city_sy'))
.margin({ bottom: 10 })
Radio({ value: 'sy', group: 'modifyConditionGroup' })
.height(24)
.width(24)
.radioStyle({
checkedBackgroundColor: $r('sys.color.ohos_id_color_text_primary_activated'),
indicatorColor: $r('sys.color.ohos_fa_foreground_contrary'),
uncheckedBorderColor: $r('sys.color.ohos_id_color_switch_outline_off') })
.checked(this.processSwitchFlag)
.onChange((isChecked: boolean) = > {
Logger.info('firstRadio status is ' + isChecked);
if (isChecked) {
conditionID = '110000';
this.processConditionID = conditionID;
modifyCondition();
}
})
}
Column() {
Text($r('app.string.city_hz'))
.margin({ bottom: 10 })
Radio({ value: 'hz', group: 'modifyConditionGroup' })
.height(24)
.width(24)
.checked(!this.processSwitchFlag)
.radioStyle({
checkedBackgroundColor: $r('sys.color.ohos_id_color_text_primary_activated'),
indicatorColor: $r('sys.color.ohos_fa_foreground_contrary'),
uncheckedBorderColor: $r('sys.color.ohos_id_color_switch_outline_off') })
.onChange((isChecked: boolean) = > {
Logger.info('secondRadio status is ' + isChecked);
if (isChecked) {
conditionID = '310000';
this.processConditionID = conditionID;
modifyCondition();
}
})
}
}
}
.width('70%')
}
.width('100%')
}
}
.height('100%')
}
}
- 使用modifyCondition来获取所有已经建立出的卡片对象。
- 修改订阅条件：使用updateCardDisplayContent遍历所有卡片对象，并根据界面获取的订阅条件数据修改订阅条件。
- 退出页面或应用后再次打开修改订阅条件页面，可以保留上次订阅的城市选择，源码参考：[StatePersistence.ts]
/*
* Copyright (c) 2023 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import type common from '@ohos.app.ability.common';
import fs from '@ohos.file.fs';
import Logger from './Logger';
const TAG = '[Sample_StatePersistence]';
const DATA_SIZE = 6;
const PERSISTENT_FILE_NAME = '/Persistent.txt';
function getConditionIDtoFile(context: common.Context, fileName: string): string {
Logger.debug(TAG, 'getConditionIDtoFile call');
if (context === undefined || context === null || typeof fileName !== 'string' || fileName === '') {
Logger.error(TAG, `getConditionIDtoFile failed, context : ${JSON.stringify(context)}`);
return '';
}
try {
let filePath = context.filesDir + fileName;
let file = fs.openSync(filePath, fs.OpenMode.READ_ONLY);
let buff = new ArrayBuffer(DATA_SIZE);
let num = fs.readSync(file.fd, buff);
let conditionID = String.fromCharCode.apply(null, new Uint8Array(buff));
Logger.info(TAG, `getConditionIDtoFile : ${conditionID.length} ${conditionID}, ${num} ${filePath}`);
fs.closeSync(file);
return conditionID;
} catch (err) {
Logger.error(TAG, `getConditionIDtoFile err : ${JSON.stringify(err)}`);
return '';
}
}
function updateConditionIDtoFile(context: common.Context, conditionID: string, fileName: string): void {
Logger.debug(TAG, 'updateConditionIDtoFile call');
if (context === undefined || context === null ||
typeof conditionID !== 'string' || conditionID === '' ||
typeof fileName !== 'string' || fileName === '') {
Logger.error(TAG, `updateConditionIDtoFile failed, conditionID : ${JSON.stringify(conditionID)}, context : ${JSON.stringify(context)}`);
return;
}
try {
let filePath = context.filesDir + fileName;
let file = fs.openSync(filePath, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE);
let num = fs.writeSync(file.fd, conditionID);
fs.closeSync(file);
Logger.info(TAG, `updateConditionIDtoFile : ${conditionID}, ${num} ${filePath}`);
} catch (err) {
Logger.error(TAG, `updateConditionIDtoFile err : ${JSON.stringify(err)}`);
}
}
export function getPersistentConditionID(context: common.Context): string {
return getConditionIDtoFile(context, PERSISTENT_FILE_NAME);
}
export function savePersistentConditionID(context: common.Context, conditionID: string): void {
updateConditionIDtoFile(context, conditionID, PERSISTENT_FILE_NAME);
}
及[StatePersistence.ts]。
/*
* Copyright (c) 2023 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import type common from '@ohos.app.ability.common';
import fs from '@ohos.file.fs';
import Logger from './Logger';
const TAG = '[Sample_StatePersistence]';
const DATA_SIZE = 6;
const PROCESS_FILE_NAME = '/Process.txt';
function getConditionIDtoFile(context: common.Context, fileName: string): string {
Logger.debug(TAG, 'getConditionIDtoFile call');
if (context === undefined || context === null || typeof fileName !== 'string' || fileName === '') {
Logger.error(TAG, `getConditionIDtoFile failed, context : ${JSON.stringify(context)}`);
return '';
}
try {
let filePath = context.filesDir + fileName;
let file = fs.openSync(filePath, fs.OpenMode.READ_ONLY);
let buff = new ArrayBuffer(DATA_SIZE);
let num = fs.readSync(file.fd, buff);
let conditionID = String.fromCharCode.apply(null, new Uint8Array(buff));
Logger.info(TAG, `getConditionIDtoFile : ${conditionID.length} ${conditionID}, ${num} ${filePath}`);
fs.closeSync(file);
return conditionID;
} catch (err) {
Logger.error(TAG, `getConditionIDtoFile err : ${JSON.stringify(err)}`);
return '';
}
}
function updateConditionIDtoFile(context: common.Context, conditionID: string, fileName: string): void {
Logger.debug(TAG, 'updateConditionIDtoFile call');
if (context === undefined || context === null ||
typeof conditionID !== 'string' || conditionID === '' ||
typeof fileName !== 'string' || fileName === '') {
Logger.error(TAG, `updateConditionIDtoFile failed, conditionID : ${JSON.stringify(conditionID)}, context : ${JSON.stringify(context)}`);
return;
}
try {
let filePath = context.filesDir + fileName;
let file = fs.openSync(filePath, fs.OpenMode.READ_WRITE | fs.OpenMode.CREATE);
let num = fs.writeSync(file.fd, conditionID);
fs.closeSync(file);
Logger.info(TAG, `updateConditionIDtoFile : ${conditionID}, ${num} ${filePath}`);
} catch (err) {
Logger.error(TAG, `updateConditionIDtoFile err : ${JSON.stringify(err)}`);
}
}
export function getProcessConditionID(context: common.Context): string {
return getConditionIDtoFile(context, PROCESS_FILE_NAME);
}
export function saveProcessConditionID(context: common.Context, conditionID: string): void {
updateConditionIDtoFile(context, conditionID, PROCESS_FILE_NAME);
}
- 发布数据的功能封装在PublishIndex.ets及PushIndex.ets中，源码参考：[PublishIndex.ets]
/*
* Copyright (c) 2023 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import base from '@ohos.base';
import common from '@ohos.app.ability.common';
import dataShare from '@ohos.data.dataShare';
import dataSharePredicates from '@ohos.data.dataSharePredicates';
import formInfo from '@ohos.app.form.formInfo';
import formObserver from '@ohos.app.form.formObserver';
import prompt from '@ohos.promptAction';
import resourceManager from '@ohos.resourceManager';
import { ValuesBucket, ValueType } from '@ohos.data.ValuesBucket';
import Logger from '../../common/Logger';
const TAG = '[Sample_PublishIndex]';
let conditionCity: string;
let conditionID: ValueType = '110000';
let conditionData = '-30 ℃';
let context: common.UIAbilityContext;
let shenYang: string;
let hangZhou: string;
const formInstanceFilter: formInfo.FormProviderFilter = {
bundleName: 'ohos.samples.formextability',
moduleName: 'persistentProxyForm'
};
function updateRDB(context: common.UIAbilityContext): void {
dataShare.createDataShareHelper(context, 'datashareproxy://ohos.samples.formextability', { isProxy: true })
.then((data: dataShare.DataShareHelper) = > {
Logger.info(TAG, `createDataShareHelper succeed, data : ${JSON.stringify(data)}`);
let dataShareHelper = data;
let da = new dataSharePredicates.DataSharePredicates();
da.equalTo('cityId', conditionID);
let va: ValuesBucket = {
cityName: conditionCity,
cityTemperature: conditionData
};
try {
let uri = 'datashareproxy://ohos.samples.formextability/test';
dataShareHelper.update(uri, da, va, (err, data) = > {
if (err !== undefined) {
Logger.info(TAG, `update error1: code: ${err.code}, message: ${err.message} `);
prompt.showToast(
{ message: `publish err: ${JSON.stringify(err)}`, duration: 5000 });
return;
}
Logger.info(TAG, `update succeed, data : ${data}`);
prompt.showToast(
{ message: `publish success ${conditionCity} ${conditionData}`, duration: 5000 });
});
dataShareHelper.notifyChange(uri);
} catch (err) {
Logger.info(TAG, `update error2: code: ${err.code}, message: ${err.message} `);
}
})
.catch((err: base.BusinessError< void >) = > {
Logger.info(TAG, `createDataShareHelper error: code: ${err.code}, message: ${err.message} `);
});
}
function publish(): void {
Logger.info(TAG, 'publish called');
formObserver.getRunningFormInfosByFilter(formInstanceFilter).then((data: Array< formInfo.RunningFormInfo >) = > {
Logger.info(TAG, `getRunningFormInfosByFilter data: ${JSON.stringify(data)}`);
AppStorage.SetOrCreate('RunningFormInfo', JSON.stringify(data));
}).catch((err: base.BusinessError< void >) = > {
Logger.error(TAG, `getRunningFormInfosByFilter err is ${JSON.stringify(err)}`);
prompt.showToast(
{ message: `publish err, getRunningFormInfosByFilter1 failed ${JSON.stringify(err)}`, duration: 5000 });
});
}
@Entry
@Component
struct IndexSec {
private inputText: string = '';
aboutToAppear() {
context = getContext(this) as common.UIAbilityContext;
let syTemp = $r('app.string.city_sy');
let hzTemp = $r('app.string.city_hz');
let citySy: resourceManager.Resource = {
bundleName: syTemp.bundleName,
moduleName: syTemp.moduleName,
id: syTemp.id
};
let cityHz: resourceManager.Resource = {
bundleName: hzTemp.bundleName,
moduleName: hzTemp.moduleName,
id: hzTemp.id
};
shenYang = context.resourceManager.getStringSync(citySy);
hangZhou = context.resourceManager.getStringSync(cityHz);
conditionCity = shenYang;
}
@StorageLink('RunningFormInfo') RunningFormInfo: string = '';
@State focus: boolean = false;
build() {
Row() {
Column({ space: 200 }) {
Column({ space: 5 }) {
Text($r('app.string.modify_publish_data'))
.fontColor('#182431')
.fontSize(40)
.lineHeight(41)
.fontWeight('100%')
}
Column() {
Column() {
Row() {
Text($r('app.string.selection_city'))
.fontSize(30)
Row() {
Column() {
Text($r('app.string.city_sy'))
.fontSize(15)
.margin({ bottom: 10 })
Radio({ value: 'sy', group: 'cityGroup' })
.checked(true)
.height(24)
.width(24)
.radioStyle({
checkedBackgroundColor: $r('sys.color.ohos_id_color_text_primary_activated'),
uncheckedBorderColor: $r('sys.color.ohos_id_color_switch_outline_off'),
indicatorColor: $r('sys.color.ohos_id_color_foreground_contrary')
})
.onChange((isChecked: boolean) = > {
Logger.info(TAG, `sy status is ${JSON.stringify(isChecked)}`);
if (isChecked) {
conditionID = '110000';
conditionCity = shenYang;
}
})
}
Column() {
Text($r('app.string.city_hz'))
.fontSize(15)
.margin({ bottom: 10 })
Radio({ value: 'hz', group: 'cityGroup' })
.height(24)
.width(24)
.radioStyle({
checkedBackgroundColor: $r('sys.color.ohos_id_color_text_primary_activated'),
uncheckedBorderColor: $r('sys.color.ohos_id_color_switch_outline_off'),
indicatorColor: $r('sys.color.ohos_id_color_foreground_contrary')
})
.onChange((isChecked: boolean) = > {
Logger.info(TAG, `hz status is ${JSON.stringify(isChecked)}`);
if (isChecked) {
conditionID = '310000';
conditionCity = hangZhou;
}
})
}
.margin({ left: 20 })
}
.margin({ left: 10 })
}
Row() {
Text($r('app.string.input_temperature'))
.fontSize(30)
.width(200)
.height(60)
TextInput({ text: '-30' })
.fontSize(20)
.fontColor($r('sys.color.ohos_id_color_text_primary'))
.width(100)
.height(40)
.type(InputType.Normal)
.borderRadius(16)
.backgroundColor($r('sys.color.ohos_id_color_text_field_sub_bg'))
.onChange((text) = > {
this.inputText = text;
})
Text('℃')
.fontSize(30)
.height(60)
}
}
.alignItems(HorizontalAlign.Start)
Button() {
Text($r('app.string.published_data'))
.fontColor($r('sys.color.ohos_id_color_foreground_contrary'))
.fontSize($r('sys.float.ohos_id_text_size_button1'))
.fontWeight(FontWeight.Bold)
}
.width(220)
.height(40)
.type(ButtonType.Capsule)
.margin({ top: 20 })
.borderRadius($r('sys.float.ohos_id_corner_radius_button'))
.backgroundColor($r('sys.color.ohos_id_color_component_activated'))
.onClick(() = > {
if (Number(this.inputText) >= -40 && Number(this.inputText) <= 60) {
Logger.info(TAG, `correct temperature is ${this.inputText}`);
conditionData = this.inputText + ' ℃';
publish();
updateRDB(context);
} else {
Logger.info(TAG, `incorrect temperature is ${this.inputText}`);
prompt.showToast({ message: 'Please enter the correct value from -40 to 60', duration: 5000 });
}
})
}
.height('30%')
}
.width('100%')
}
.height('100%')
}
}
及[PushIndex.ets]。
/*
* Copyright (c) 2023 Huawei Device Co., Ltd.
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
import base from '@ohos.base';
import common from '@ohos.app.ability.common';
import dataShare from '@ohos.data.dataShare';
import formInfo from '@ohos.app.form.formInfo';
import formObserver from '@ohos.app.form.formObserver';
import prompt from '@ohos.promptAction';
import Logger from '../../common/Logger';
const TAG = '[Sample_PushIndex]';
let context: common.UIAbilityContext;
let dataShareHelper: dataShare.DataShareHelper;
let uri = ('datashareproxy://ohos.samples.formextability');
let conditionCity = '';
let conditionID = '110000';
let conditionData = '-30 ℃';
let formInstanceFilter: formInfo.FormProviderFilter = {
bundleName: 'ohos.samples.formextability',
moduleName: 'processProxyForm'
};
function updateCardDisplayContent(runningFormInfo: formInfo.RunningFormInfo): void {
Logger.info(TAG, `updateCardDisplayContent bundle: ${runningFormInfo.bundleName}`);
dataShare.createDataShareHelper(context, uri, { isProxy: true }, (err, dataHelper) = > {
Logger.info(TAG, `dataShareHelper err: ${err}`, `data: ${dataShareHelper}`);
dataShareHelper = dataHelper;
if (err !== undefined) {
Logger.error(TAG, `createDataShareHelper error code: ${err.code}`, `message: ${err.message} `);
prompt.showToast({ message: 'createDataShareHelper:' + err.message, duration: 5000 });
} else {
let publishedItemData: Array< dataShare.PublishedItem > = [
{ key: 'cityName', data: JSON.stringify(conditionCity), subscriberId: conditionID },
{ key: 'cityTemperature', data: JSON.stringify(conditionData), subscriberId: conditionID }
];
dataShareHelper.publish(publishedItemData, 'ohos.samples.formextability').then((data: Object) = > {
Logger.info(TAG, `publish success, data is ${JSON.stringify(data)}`);
prompt.showToast(
{ message: `publish success ${conditionCity} ${conditionData}`, duration: 5000 });
}).catch((err: base.BusinessError< void >) = > {
Logger.error(TAG, `publish error: ${JSON.stringify(err)}`);
prompt.showToast({ message: `publish err: ${JSON.stringify(err)}`, duration: 5000 });
});
}
});
}
function publish(): void {
Logger.info(TAG, 'publish called');
formObserver.getRunningFormInfosByFilter(formInstanceFilter).then((data: Array< formInfo.RunningFormInfo >) = > {
Logger.info(TAG, `getRunningFormInfosByFilter data: ${JSON.stringify(data)}`);
AppStorage.SetOrCreate('runningFormInfo', JSON.stringify(data));
data.forEach(updateCardDisplayContent);
}).catch((err: base.BusinessError< void >) = > {
Logger.error(TAG, `getRunningFormInfosByFilter err is ${JSON.stringify(err)}`);
prompt.showToast(
{ message: `publish err, getRunningFormInfosByFilter failed ${JSON.stringify(err)}`, duration: 5000 });
});
}
@Entry
@Component
struct IndexSec {
@StorageLink('runningFormInfo') runningFormInfo: string = '';
@State focus: boolean = false;
aboutToAppear() {
context = getContext(this) as common.UIAbilityContext;
conditionCity = context.resourceManager.getStringSync($r('app.string.city_sy'));
}
build() {
Row() {
Column({ space: 200 }) {
Column({ space: 5 }) {
Text($r('app.string.modify_publish_data'))
.fontColor('#182431')
.fontSize(40)
.lineHeight(41)
.fontWeight('100%')
}
Column() {
Column() {
Row() {
Text($r('app.string.selection_city'))
.fontSize(30)
Row() {
Column() {
Text($r('app.string.city_sy'))
.fontSize(15)
.margin({ bottom: 10 })
Radio({ value: 'sy', group: 'cityGroup' })
.checked(true)
.height(24)
.width(24)
.radioStyle({
checkedBackgroundColor: $r('sys.color.ohos_id_color_text_primary_activated'),
indicatorColor: $r('sys.color.ohos_fa_foreground_contrary'),
uncheckedBorderColor: $r('sys.color.ohos_id_color_switch_outline_off') })
.onChange((isChecked: boolean) = > {
Logger.info(TAG, `sy status is ${JSON.stringify(isChecked)}`);
if (isChecked) {
conditionID = '110000';
conditionCity = context.resourceManager.getStringSync($r('app.string.city_sy'));
}
})
}
Column() {
Text($r('app.string.city_hz'))
.fontSize(15)
.margin({ bottom: 10 })
Radio({ value: 'hz', group: 'cityGroup' })
.height(24)
.width(24)
.radioStyle({
checkedBackgroundColor: $r('sys.color.ohos_id_color_text_primary_activated'),
indicatorColor: $r('sys.color.ohos_fa_foreground_contrary'),
uncheckedBorderColor: $r('sys.color.ohos_id_color_switch_outline_off') })
.onChange((isChecked: boolean) = > {
Logger.info(TAG, `hz status is ${JSON.stringify(isChecked)}`);
if (isChecked) {
conditionID = '310000';
conditionCity = context.resourceManager.getStringSync($r('app.string.city_hz'));
}
})
}
.margin({ left: 20 })
}
.margin({ left: 10 })
}
Row() {
Text($r('app.string.input_temperature'))
.fontSize(30)
.width(200)
.height(60)
TextInput({ text: '-30' })
.fontSize(20)
.fontColor($r('sys.color.ohos_id_color_text_primary'))
.width(100)
.height(40)
.type(InputType.Normal)
.borderRadius(16)
.backgroundColor($r('sys.color.ohos_id_color_text_field_sub_bg'))
.onChange((text) = > {
conditionData = text;
})
Text('℃')
.fontSize(30)
.height(60)
}
}
.alignItems(HorizontalAlign.Start)
Button() {
Text($r('app.string.published_data'))
.fontColor($r('sys.color.ohos_id_color_foreground_contrary'))
.fontSize($r('sys.float.ohos_id_text_size_button1'))
.fontWeight(FontWeight.Bold)
}
.height(40)
.width(220)
.borderRadius($r('sys.float.ohos_id_corner_radius_button'))
.backgroundColor($r('sys.color.ohos_id_color_component_activated'))
.type(ButtonType.Capsule)
.margin({ top: 20 })
.onClick(() = > {
if (Number(conditionData) >= -40 && Number(conditionData) <= 60) {
Logger.info(TAG, `correct temperature is ${conditionData}`);
publish();
} else {
Logger.info(TAG, `incorrect temperature is ${conditionData}`);
prompt.showToast({ message: 'Please enter the correct value from -40 to 60', duration: 5000 });
}
})
}
.alignItems(HorizontalAlign.Center)
.height('30%')
}
.width('100%')
}
.height('100%')
}
}
更多鸿蒙开发应用知识已更新gitee.com/li-shizhen-skin/harmony-os/blob/master/README.md参考前往。
- [PublishIndex.ets]使用updateRDB来修改rdb数据库中的对应数据。
- [PushIndex.ets]使用getRunningFormInfosByFilter获取已经建立出的卡片对象，并使用updateCardDisplayContent遍历所有卡片对象，使用createDataShareHelper创建DataShareHelper对象，并根据界面获取的数据信息使用publish进行数据的发布以实现发布数据的功能
- 在dataShare模块中，建立rdb数据库，并提供对应update方法。
- 在onCreate中初始化数据库中的数据。
- 在update中实现对应的数据更新方法。
声明：本文内容及配图由入驻作者撰写或者入驻合作网站授权转载。文章观点仅代表作者本人，不代表电子发烧友网立场。文章及其配图仅供工程师学习之用，如有内容侵权或者其他违规问题，请联系本站处理。
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