教做饮品的网站,三明网站设计,物联网有哪些工作岗位,网站建设方案报价单一、问题背景#xff1a; 应用在强提醒场景下#xff0c;一般会有马达振动的效果#xff0c;提示用户注意力的关注。
比如消息提醒#xff0c;扫码提示#xff0c;删除键确认提示等。
针对高定制化或者固定的振动方式#xff0c;我们需要有不同的方案实现#xff0c;马…一、问题背景 应用在强提醒场景下一般会有马达振动的效果提示用户注意力的关注。
比如消息提醒扫码提示删除键确认提示等。
针对高定制化或者固定的振动方式我们需要有不同的方案实现马达振动效果。
二、解决方案 鸿蒙针对振动效果的实现有多种方案目前分为振动和音振协同两种方式。
单纯的只是振动又分为三种方式
系统定制的振动方式例如闹钟非系统定制自定义振动配置json文件的方式线性马达振动只需要设置时间和强度最简单的调用方式
音振协同一般用于音效播放和振动同时的场景例如扫码。
1.首先需要配置振动权限该权限是系统权限只需要配置后默认就会被授权。 ohos.permission.VIBRATE
2.之后根据需要实现不同的马达振动效果方案调用详情参见下方代码示例的注释。
三、DEMO示例
import vibrator from ohos.vibrator;
import { BusinessError } from ohos.base;
import { resourceManager } from kit.LocalizationKit;/*** 振动管理类* 需要权限 ohos.permission.VIBRATE*/
export class HapticMgr {private TAG: string HapticMgr;private static mHapticMgr: HapticMgr | undefined undefined;public static Ins(): HapticMgr{if(!HapticMgr.mHapticMgr){HapticMgr.mHapticMgr new HapticMgr();}return HapticMgr.mHapticMgr;}/*** 按照指定持续时间触发马达振动*/public timeVibration(){try {// 触发马达振动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);});} catch (err) {let e: BusinessError err as BusinessError;console.error(An unexpected error occurred. Code: ${e.code}, message: ${e.message});}}/*** 按照预置振动效果触发马达振动可先查询振动效果是否被支持再调用振动接口*/public typeVibration(){try {// 查询是否支持haptic.clock.timervibrator.isSupportEffect(haptic.clock.timer, (err: BusinessError, state: boolean) {if (err) {console.error(Failed to query effect. Code: ${err.code}, message: ${err.message});return;}console.info(Succeed in querying effect);if (state) {try {// 触发马达振动vibrator.startVibration({type: preset,effectId: haptic.clock.timer,count: 1,}, {usage: unknown}, (error: BusinessError) {if (error) {console.error(Failed to start vibration. Code: ${error.code}, message: ${error.message});} else {console.info(Succeed in starting vibration);}});} catch (error) {let e: BusinessError error as BusinessError;console.error(An unexpected error occurred. Code: ${e.code}, message: ${e.message});}}})} catch (error) {let e: BusinessError error as BusinessError;console.error(An unexpected error occurred. Code: ${e.code}, message: ${e.message});}}public fileVibration(){const fileName: string vibration.json;// 获取文件资源描述符let rawFd: resourceManager.RawFileDescriptor getContext().resourceManager.getRawFdSync(fileName);// 触发马达振动try {vibrator.startVibration({type: file,hapticFd: { fd: rawFd.fd, offset: rawFd.offset, length: rawFd.length }}, {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);});} catch (err) {let e: BusinessError err as BusinessError;console.error(An unexpected error occurred. Code: ${e.code}, message: ${e.message});}// 关闭文件资源描述符getContext().resourceManager.closeRawFdSync(fileName);}/*** 按照指定模式停止对应的马达振动自定义振动不支持此类停止方式*/public stopVibrationByType(){// 停止固定时长振动try {// 按照VIBRATOR_STOP_MODE_TIME模式停止振动vibrator.stopVibration(vibrator.VibratorStopMode.VIBRATOR_STOP_MODE_TIME, (error: BusinessError) {if (error) {console.error(Failed to stop vibration. Code: ${error.code}, message: ${error.message});return;}console.info(Succeed in stopping vibration);})} catch (err) {let e: BusinessError err as BusinessError;console.error(An unexpected error occurred. Code: ${e.code}, message: ${e.message});}// 停止预置振动try {// 按照VIBRATOR_STOP_MODE_PRESET模式停止振动vibrator.stopVibration(vibrator.VibratorStopMode.VIBRATOR_STOP_MODE_PRESET, (error: BusinessError) {if (error) {console.error(Failed to stop vibration. Code: ${error.code}, message: ${error.message});return;}console.info(Succeed in stopping vibration);})} catch (err) {let e: BusinessError err as BusinessError;console.error(An unexpected error occurred. Code: ${e.code}, message: ${e.message});}}/*** 停止所有模式的马达振动包括自定义振动*/public stopVibration(){try {// 停止所有模式的马达振动vibrator.stopVibration((error: BusinessError) {if (error) {console.error(Failed to stop vibration. Code: ${error.code}, message: ${error.message});return;}console.info(Succeed in stopping vibration);})} catch (error) {let e: BusinessError error as BusinessError;console.error(An unexpected error occurred. Code: ${e.code}, message: ${e.message});}}}振动配置文件
{MetaData: {Create: 2023-01-09,Description: a haptic case,Version: 1.0,ChannelNumber: 1},Channels: [{Parameters: {Index: 0},Pattern: [{Event: {Type: transient,StartTime: 0,Parameters: {Frequency: 31,Intensity: 100}}},{Event: {Type: continuous,StartTime: 40,Duration: 54,Parameters: {Frequency: 30,Intensity: 38,Curve: [{Time: 0,Frequency: 0,Intensity: 0},{Time: 1,Frequency: 15,Intensity: 0.5},{Time: 40,Frequency: -8,Intensity: 1.0},{Time: 54,Frequency: 0,Intensity: 0}]}}}]}]
}
