如何通过AccessibilityKit实现语音导航的深度适配？

​{

  "module": {

    "abilities": [

      {

        "name": "VoiceNavigationService",

        "type": "accessibility",

        "description": "$string:voice_nav_service_desc",

        "label": "$string:voice_nav_label",

        "accessibilityCapabilities": [

          "touchExploration",  
          "textSpeech",  
          "gestureControl"

        ],

        "metadata": [

          {

            "name": "ohos.accessibility",

            "resource": "$profile:accessibility_config.xml"

          }

        ]

      }

    ]

  }

}
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.

​<accessibility-config version="1.0">

  <capabilities>

    <capability name="touchExploration"/>

    <capability name="textSpeech"/>

    <capability name="gestureControl"/>

  </capabilities>

  <events>

    <event type="focusChange"/>

    <event type="click"/>

    <event type="longClick"/>

    <event type="textUpdate"/>

  </events>

</accessibility-config>
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.

import Accessibility from '@ohos.accessibility';

import abilityAccessCtrl from '@ohos.abilityAccessCtrl';


export default class VoiceNavigationService extends Accessibility.AccessibilityAbility {

  private speechEngine: Accessibility.TextToSpeech | null = null;


  // 服务启动时初始化

  onConnect(): void {

    // 获取语音引擎实例

    this.speechEngine = Accessibility.createTextToSpeech(this.context);

    

    // 配置语音参数

    this.speechEngine.setLanguage('zh-CN');

    this.speechEngine.setPitch(1.2); // 提高音调增强可听性

    

    // 注册事件监听

    this.on('accessibilityEvent', (event) => {

      this.handleAccessibilityEvent(event);

    });

  }


  // 事件处理核心逻辑

  private handleAccessibilityEvent(event: Accessibility.Event): void {

    switch (event.type) {

      case Accessibility.EventType.VIEW_FOCUSED:

        this.announceFocusedElement(event);

        break;

      case Accessibility.EventType.VIEW_CLICKED:

        this.handleClickFeedback(event);

        break;

      case Accessibility.EventType.VIEW_TEXT_UPDATE:

        this.handleTextUpdate(event);

        break;

    }

  }

}
​
1.
2.
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
32.
33.
34.
35.
36.
37.
38.
39.
40.
41.
42.
43.
44.
45.
46.
47.
48.
49.
50.
51.
52.
53.
54.
55.
56.
57.
58.
59.
60.
61.
62.
63.
64.
65.
66.
67.
68.
69.