HarmonyOS 手机震动接口调用无效果

doVibrate(){ 
  try { 
    vibrator.startVibration({ 
      type: 'preset', 
      effectId: 'haptic.clock.timer', 
      count: 1 
    }, { 
      id: 0, 
      usage: 'alarm' 
    }, (error: BusinessError) => { 
      if (error) { 
        GmuLogProxy.error(tag,`Failed to start vibration. Code: ${error.code}, message: ${error.message}`); 
        return; 
      } 
      GmuLogProxy.info(tag,'Succeed in starting vibration'); 
    }); 
  } catch (err) { 
    let e: BusinessError = err as BusinessError; 
    console.error(`An unexpected error occurred. Code: ${e.code}, message: ${e.message}`); 
  } 
}