HarmonyOS是否具备无限震动的能力和选中重复的pattern的索引？

Question

需要实现无限震动以及在某个震动实践序列进行重复，HarmonyOS有现成的api吗？

Answer 1

可以使用setInterval函数和@ohos.vibrator (振动)联合实现无限振动的功能。

参考demo:

import vibrator from '@ohos.vibrator';
import { BusinessError } from '@ohos.base';
import List from '@ohos.util.List';

@Entry
@Component
struct Index13 {
  @State message: string = 'Hello World';

  build() {
    Row() {
      Column() {
        Text(this.message)
          .fontSize(50)
          .fontWeight(FontWeight.Bold).onClick(()=>{
          try {
            setInterval(() => {
              vibrator.startVibration({
                type: 'time',
                duration: 1000,
              }, {
                id: 0,
                usage: 'alarm'
              }, (error: BusinessError) => {
                if (error) {
                  console.error(`Failed to start vibration. Code: ${error.code}, message: ${error.message}`);
                  return;
                }
                console.info('Succeed in starting vibration');
              });
            }, 1000);
          } catch (err) {
            let e: BusinessError = err as BusinessError;
            console.error(`An unexpected error occurred. Code: ${e.code}, message: ${e.message}`);
          }
        })
      }
      .width('100%')
    }
    .height('100%')
  }
}

参考文档：https://developer.huawei.com/consumer/cn/doc/harmonyos-references/js-apis-timer-0000001813576724

https://developer.huawei.com/consumer/cn/doc/harmonyos-references/js-apis-vibrator-0000001774122078\#ZH-CN\_TOPIC\_0000001811316862\_\_vibratorstartvibration9

可以使用setInterval函数和@ohos.vibrator (振动)联合实现无限振动的功能，使用vibrator得先在配置文件中配置ohos.permission.VIBRATE权限。