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1/*
2 * Copyright (c) 2023 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 *     http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16import wantAgent, { WantAgent } from '@ohos.app.ability.wantAgent';
17import common from '@ohos.app.ability.common';
18import backgroundTaskManager from '@ohos.resourceschedule.backgroundTaskManager';
19import { BusinessError } from '@ohos.base';
20import geolocation from '@ohos.geoLocationManager';
21import abilityAccessCtrl from '@ohos.abilityAccessCtrl';
22import notificationManager from '@ohos.notificationManager';
23
24const TAG: string = 'BackgroundLocation';
25
26@Component
27export struct LongTermTaskView {
28  @State latitude: number = 0;
29  @State longitude: number = 0;
30
31  aboutToAppear() {
32    notificationManager.requestEnableNotification().then(() => {
33      console.info(`requestEnableNotification success`);
34      let atManager = abilityAccessCtrl.createAtManager();
35      try {
36        // 定位需要先单独申请APPROXIMATELY_LOCATION权限
37        atManager.requestPermissionsFromUser(getContext(this), ['ohos.permission.APPROXIMATELY_LOCATION'])
38          .then((data) => {
39            console.info(`data: ${JSON.stringify(data)}`);
40            atManager.requestPermissionsFromUser(getContext(this), ['ohos.permission.INTERNET',
41              'ohos.permission.LOCATION',
42              'ohos.permission.LOCATION_IN_BACKGROUND'])
43              .then((data) => {
44                console.info(`data: ${JSON.stringify(data)}`);
45              })
46              .catch((err: BusinessError) => {
47                console.info(`err: ${JSON.stringify(err)}`);
48              })
49          })
50          .catch((err: BusinessError) => {
51            console.info(`err: ${JSON.stringify(err)}`);
52          })
53      } catch (err) {
54        console.info(`catch err->${JSON.stringify(err)}`);
55      }
56    }).catch((err: BusinessError) => {
57      console.error(`requestEnableNotification failed, code is ${err.code}, message is ${err.message}`);
58    });
59  }
60
61  // 位置变化回调
62  locationChange = async (location: geolocation.Location) => {
63    console.info(TAG, `locationChange location =${JSON.stringify(location)}`);
64    this.latitude = location.latitude;
65    this.longitude = location.longitude;
66  }
67
68  // 获取定位
69  async getLocation() {
70    console.info(TAG, `enter getLocation`);
71    let requestInfo: geolocation.LocationRequest = {
72      priority: geolocation.LocationRequestPriority.FIRST_FIX, // 快速获取位置优先
73      scenario: geolocation.LocationRequestScenario.UNSET, // 未设置场景信息
74      timeInterval: 1, // 上报位置信息的时间间隔
75      distanceInterval: 0, // 上报位置信息的距离间隔
76      maxAccuracy: 100 // 精度信息
77    };
78    console.info(TAG, `on locationChange before`);
79    geolocation.on('locationChange', requestInfo, this.locationChange);
80    console.info(TAG, `on locationChange end`);
81  }
82
83  // 开始长时任务
84  startContinuousTask() {
85    let context: Context = getContext(this);
86    // 通知参数，指定点击长时任务通知后跳转的应用
87    let wantAgentInfo: wantAgent.WantAgentInfo = {
88      wants: [
89        {
90          bundleName: (context as common.UIAbilityContext).abilityInfo.bundleName,
91          abilityName: (context as common.UIAbilityContext).abilityInfo.name
92        }
93      ],
94      operationType: wantAgent.OperationType.START_ABILITY,
95      requestCode: 0,
96      wantAgentFlags: [wantAgent.WantAgentFlags.UPDATE_PRESENT_FLAG]
97    };
98    wantAgent.getWantAgent(wantAgentInfo).then((wantAgentObj: WantAgent) => {
99      backgroundTaskManager.startBackgroundRunning(context,
100        backgroundTaskManager.BackgroundMode.LOCATION, wantAgentObj).then(() => {
101        console.info(`Succeeded in operationing startBackgroundRunning.`);
102      }).catch((err: BusinessError) => {
103        console.error(`Failed to operation startBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
104      });
105    });
106  }
107
108  // 停止长时任务
109  stopContinuousTask() {
110    backgroundTaskManager.stopBackgroundRunning(getContext()).then(() => {
111      console.info(`Succeeded in operationing stopBackgroundRunning.`);
112    }).catch((err: BusinessError) => {
113      console.error(`Failed to operation stopBackgroundRunning. Code is ${err.code}, message is ${err.message}`);
114    });
115  }
116
117  build() {
118    Column() {
119      Column() {
120        Text(this.latitude.toString())
121        Text(this.longitude.toString())
122      }
123      .width('100%')
124
125      Column() {
126        Button('开启定位服务')
127          .onClick(() => {
128            this.startContinuousTask();
129            this.getLocation();
130          })
131        Button('关闭定位服务')
132          .onClick(async () => {
133            await geolocation.off('locationChange');
134            this.stopContinuousTask();
135          })
136          .margin({ top: 10 })
137      }
138      .width('100%')
139    }
140    .width('100%')
141    .height('100%')
142    .justifyContent(FlexAlign.Center)
143  }
144}
145
146