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本文實例為大家分享了微信小程序實現身份證取景框拍攝的具體代碼,供大家參考,具體內容如下
wxml
<view class="camera_box"> <camera class="camera" wx:if="{{!show}}" device-position="back" flash="off" binderror="error"> <cover-view class="id_m"> <cover-image class="img" src="http://img.jbzj.com/file_images/article/202009/202099172501721.png"></cover-image> </cover-view> </camera> <image class="camera_img" src="{{src}}" wx:if="{{show}}"></image> <view class="action"> <button class="takeBtn" type="primary" bindtap="takePhoto" wx:if="{{!show}}"></button> <button class="saveImg" type="primary" bindtap="saveImg" wx:if="{{show}}"></button> <button class="cancelBtn" wx:if="{{show}}" type="primary" bindtap="cancelBtn"></button> </view> </view>
wxss
.camera_box { height: 100vh; width: 100vw; position: relative; } .camera { height: 85vh; width: 100vw; z-index: 1; } .id_m { height: 85vh; width: 100vw; z-index: 999; background: rgba(0, 0, 0, 0.1); display: flex; position: absolute; } .id_m .img { width: 550rpx; height: 900rpx; display: block; position: absolute; left: 0; right: 0; margin: auto auto; top: 0; bottom: 0; } .id_m .tips_txt { transform:rotate(90deg); } .camera_box .action { height: 15vh; position: relative; display: flex; justify-content: space-around; align-items: center; } .camera_box .takeBtn { height: 120rpx; width: 120rpx; border-radius: 50%; font-size: 24rpx; background: url('https://cache.yisu.com/upload/information/20200909/112/4082.png') no-repeat center; background-size: contain; border: none; } .camera_box .cancelBtn { font-size: 24rpx; height: 120rpx; width: 120rpx; border-radius: 50%; background: url('https://cache.yisu.com/upload/information/20200909/112/4083.png') no-repeat center; background-size: contain; border: none; } .camera_box .saveImg { background: url('https://cache.yisu.com/upload/information/20200909/112/4084.png') no-repeat center; font-size: 24rpx; height: 120rpx; width: 120rpx; border-radius: 50%; background-size: contain; border: none; } .camera_box .takeBtn::after { border: none; } .camera_img { height: 85vh; width: 100%; }
js
Page({ /** * 頁面的初始數據 */ data: { src: '', show: false }, cancelBtn () { this.setData({show: false}) }, saveImg () { wx.showModal({ title: '圖片地址', content: this.data.src, }) }, takePhoto() { const ctx = wx.createCameraContext() const listener = ctx.onCameraFrame((frame) => { console.log(frame) }) ctx.takePhoto({ quality: 'high', success: (res) => { console.log(res) this.setData({ src: res.tempImagePath, show: true }) listener.stop({ success: (res) => { console.log(res) }, fail: (err) =>{ console.log(err) } }) }, fail: (err) => { console.log(err) } }) }, error(e) { console.log(e.detail) }, /** * 生命周期函數--監聽頁面加載 */ onLoad: function (options) { }, /** * 生命周期函數--監聽頁面初次渲染完成 */ onReady: function () { }, /** * 生命周期函數--監聽頁面顯示 */ onShow: function () { }, /** * 生命周期函數--監聽頁面隱藏 */ onHide: function () { }, /** * 生命周期函數--監聽頁面卸載 */ onUnload: function () { }, /** * 頁面相關事件處理函數--監聽用戶下拉動作 */ onPullDownRefresh: function () { }, /** * 頁面上拉觸底事件的處理函數 */ onReachBottom: function () { }, /** * 用戶點擊右上角分享 */ onShareAppMessage: function () { } })
以上就是本文的全部內容,希望對大家的學習有所幫助,也希望大家多多支持億速云。
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