鸿蒙OSUniApp滑动锁屏实战：打造流畅优雅的移动端解锁体验#三方框架 #Uniapp

UniApp滑动锁屏实战：打造流畅优雅的移动端解锁体验

引言

移动应用的安全性和用户体验是开发中不可忽视的重要环节。滑动锁屏作为一种直观、安全且用户友好的解锁方式，在移动应用中得到广泛应用。本文将深入探讨如何使用UniApp框架实现一个功能完备、动画流畅的滑动锁屏功能，并着重考虑HarmonyOS平台的适配。

技术方案设计

1. 核心技术栈

前端框架：UniApp + Vue3 + TypeScript
状态管理：Pinia
手势处理：uni.createAnimation + 自定义手势库
数据存储：uni.storage + 加密存储
动画方案：CSS3 + requestAnimationFrame

2. 功能规划

滑动解锁界面
图案设置与验证
动画效果与交互反馈
安全性保障
失败处理机制

核心代码实现

1. 滑动锁屏组件

<!-- components/SlideLock.vue -->
<template>
  <view class="slide-lock" :class="{ 'dark-mode': isDarkMode }">
    <!-- 锁屏界面 -->
    <view class="lock-screen" :style="lockScreenStyle">
      <!-- 时间日期显示 -->
      <view class="time-display">
        <text class="time">{{ currentTime }}</text>
        <text class="date">{{ currentDate }}</text>
      </view>
      
      <!-- 滑动区域 -->
      <view 
        class="slide-area"
        @touchstart="handleTouchStart"
        @touchmove="handleTouchMove"
        @touchend="handleTouchEnd"
      >
        <view 
          class="slide-handle"
          :style="handleStyle"
          :animation="handleAnimation"
        >
          <view class="handle-icon">
            <text class="iconfont icon-unlock"></text>
          </view>
          <text class="handle-text">{{ slideText }}</text>
        </view>
        
        <!-- 轨道背景 -->
        <view class="slide-track">
          <view 
            class="track-highlight"
            :style="{ width: slideProgress + '%' }"
          ></view>
        </view>
      </view>
      
      <!-- 解锁提示 -->
      <view class="unlock-tips" v-if="showTips">
        {{ unlockTips }}
      </view>
    </view>
  </view>
</template>

<script lang="ts" setup>
import { ref, computed, onMounted, onUnmounted } from 'vue'
import { useThemeStore } from '@/stores/theme'
import { useSecurityStore } from '@/stores/security'
import { createAnimation } from '@/utils/animation'
import { formatTime, formatDate } from '@/utils/date'
import type { TouchEvent } from '@dcloudio/uni-app'

// 状态管理
const themeStore = useThemeStore()
const securityStore = useSecurityStore()

// 响应式数据
const isDarkMode = computed(() => themeStore.isDarkMode)
const currentTime = ref(formatTime(new Date()))
const currentDate = ref(formatDate(new Date()))
const slideProgress = ref(0)
const slideText = ref('向右滑动解锁')
const showTips = ref(false)
const unlockTips = ref('')

// 滑动相关变量
const startX = ref(0)
const currentX = ref(0)
const isSliding = ref(false)
const slideThreshold = 0.75 // 解锁阈值
const trackWidth = ref(0)
const handleAnimation = ref(null)

// 计算样式
const handleStyle = computed(() => ({
  transform: `translateX(${slideProgress.value}%)`,
  opacity: 1 - slideProgress.value / 200
}))

const lockScreenStyle = computed(() => ({
  backgroundColor: isDarkMode.value ? '#1a1a1a' : '#ffffff'
}))

// 初始化
onMounted(() => {
  initSlideTrack()
  startTimeUpdate()
  initAnimation()
})

onUnmounted(() => {
  stopTimeUpdate()
})

// 初始化滑动区域
const initSlideTrack = () => {
  const query = uni.createSelectorQuery().in(this)
  query.select('.slide-track').boundingClientRect(data => {
    trackWidth.value = data.width
  }).exec()
}

// 初始化动画实例
const initAnimation = () => {
  handleAnimation.value = createAnimation({
    duration: 300,
    timingFunction: 'ease-out'
  })
}

// 更新时间显示
let timeTimer: number
const startTimeUpdate = () => {
  timeTimer = setInterval(() => {
    const now = new Date()
    currentTime.value = formatTime(now)
    currentDate.value = formatDate(now)
  }, 1000)
}

const stopTimeUpdate = () => {
  clearInterval(timeTimer)
}

// 触摸事件处理
const handleTouchStart = (e: TouchEvent) => {
  const touch = e.touches[0]
  startX.value = touch.clientX
  currentX.value = touch.clientX
  isSliding.value = true
  showTips.value = false
}

const handleTouchMove = (e: TouchEvent) => {
  if (!isSliding.value) return
  
  const touch = e.touches[0]
  const deltaX = touch.clientX - startX.value
  
  // 计算滑动进度
  slideProgress.value = Math.min(100, Math.max(0, (deltaX / trackWidth.value) * 100))
  
  // 更新滑块文本
  if (slideProgress.value > slideThreshold * 100) {
    slideText.value = '松开即可解锁'
  } else {
    slideText.value = '向右滑动解锁'
  }
  
  // 应用动画
  handleAnimation.value
    .translateX(slideProgress.value + '%')
    .opacity(1 - slideProgress.value / 200)
    .step()
}

const handleTouchEnd = async () => {
  if (!isSliding.value) return
  
  isSliding.value = false
  
  if (slideProgress.value >= slideThreshold * 100) {
    // 解锁成功
    await handleUnlockSuccess()
  } else {
    // 重置滑块
    resetSlideHandle()
  }
}

// 解锁成功处理
const handleUnlockSuccess = async () => {
  try {
    await securityStore.unlock()
    
    // 完成解锁动画
    handleAnimation.value
      .translateX('100%')
      .opacity(0)
      .step()
    
    // 触发解锁成功事件
    emit('unlock-success')
  } catch (error) {
    showUnlockError(error.message)
    resetSlideHandle()
  }
}

// 重置滑块位置
const resetSlideHandle = () => {
  slideProgress.value = 0
  slideText.value = '向右滑动解锁'
  
  handleAnimation.value
    .translateX('0%')
    .opacity(1)
    .step()
}

// 显示错误提示
const showUnlockError = (message: string) => {
  unlockTips.value = message
  showTips.value = true
  
  setTimeout(() => {
    showTips.value = false
  }, 3000)
}

// 事件声明
const emit = defineEmits<{
  (e: 'unlock-success'): void
}>()
</script>

<style lang="scss">
.slide-lock {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 999;
  
  .lock-screen {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: space-between;
    padding: 60rpx 40rpx;
    transition: background-color 0.3s;
    
    .time-display {
      text-align: center;
      margin-top: 100rpx;
      
      .time {
        font-size: 80rpx;
        font-weight: 200;
        color: var(--text-primary);
      }
      
      .date {
        font-size: 32rpx;
        color: var(--text-secondary);
        margin-top: 20rpx;
      }
    }
    
    .slide-area {
      position: relative;
      width: 100%;
      height: 100rpx;
      margin-bottom: 100rpx;
      
      .slide-track {
        position: absolute;
        left: 0;
        right: 0;
        height: 100%;
        background: var(--track-bg);
        border-radius: 50rpx;
        overflow: hidden;
        
        .track-highlight {
          height: 100%;
          background: var(--primary-color);
          transition: width 0.3s;
        }
      }
      
      .slide-handle {
        position: absolute;
        left: 0;
        top: 0;
        width: 100rpx;
        height: 100%;
        display: flex;
        align-items: center;
        justify-content: center;
        background: #fff;
        border-radius: 50%;
        box-shadow: 0 4rpx 16rpx rgba(0, 0, 0, 0.1);
        z-index: 1;
        
        .handle-icon {
          font-size: 40rpx;
          color: var(--primary-color);
        }
        
        .handle-text {
          position: absolute;
          left: 120rpx;
          font-size: 28rpx;
          color: var(--text-secondary);
          white-space: nowrap;
        }
      }
    }
    
    .unlock-tips {
      position: absolute;
      bottom: 200rpx;
      left: 50%;
      transform: translateX(-50%);
      padding: 20rpx 40rpx;
      background: rgba(0, 0, 0, 0.7);
      color: #fff;
      border-radius: 8rpx;
      font-size: 28rpx;
      animation: fadeIn 0.3s;
    }
  }
  
  &.dark-mode {
    --text-primary: #fff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --track-bg: rgba(255, 255, 255, 0.1);
    --primary-color: #409eff;
    
    .slide-handle {
      background: #2c2c2c;
    }
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translate(-50%, 20rpx);
  }
  to {
    opacity: 1;
    transform: translate(-50%, 0);
  }
}
</style>

2. 动画工具类

// utils/animation.ts
interface AnimationOptions {
  duration?: number
  timingFunction?: string
  delay?: number
  transformOrigin?: string
}

export const createAnimation = (options: AnimationOptions = {}) => {
  const {
    duration = 400,
    timingFunction = 'linear',
    delay = 0,
    transformOrigin = '50% 50% 0'
  } = options
  
  return uni.createAnimation({
    duration,
    timingFunction,
    delay,
    transformOrigin
  })
}

export const easeOutCubic = (t: number): number => {
  return 1 - Math.pow(1 - t, 3)
}

export const easeInOutCubic = (t: number): number => {
  return t < 0.5
    ? 4 * t * t * t
    : 1 - Math.pow(-2 * t + 2, 3) / 2
}

3. 安全存储工具

// utils/secure-storage.ts
import CryptoJS from 'crypto-js'

const SECRET_KEY = 'your-secret-key'

export class SecureStorage {
  static setItem(key: string, value: any): void {
    try {
      const data = JSON.stringify(value)
      const encrypted = CryptoJS.AES.encrypt(data, SECRET_KEY).toString()
      uni.setStorageSync(key, encrypted)
    } catch (error) {
      console.error('SecureStorage: Failed to set item', error)
    }
  }
  
  static getItem<T>(key: string): T | null {
    try {
      const encrypted = uni.getStorageSync(key)
      if (!encrypted) return null
      
      const decrypted = CryptoJS.AES.decrypt(encrypted, SECRET_KEY).toString(CryptoJS.enc.Utf8)
      return JSON.parse(decrypted)
    } catch (error) {
      console.error('SecureStorage: Failed to get item', error)
      return null
    }
  }
  
  static removeItem(key: string): void {
    try {
      uni.removeStorageSync(key)
    } catch (error) {
      console.error('SecureStorage: Failed to remove item', error)
    }
  }
}