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Tips wx.navigateTo 和 wx.redirectTo 不允许跳转到 tabbar 页面,只能用 wx.switchTab 跳转到 tabbar 页面 canvas尺寸设置需要自适应计算,使用API getSystemInfo 参考:【转】微信小程序canvas尺寸设置 - 极乐君的文章 - 知乎 踩坑记录 【转】微信小程序开发踩坑指南 小程序canvas和h5的canvas差别很大,注意区别 【转】两百条微信小程序开发跳坑指南 触控事件触发顺序 动作 触发顺序 单击 tap touchStart -> tap -> touchEnd 长按 longPress touchStart -> longPress -> tap -> touchEnd 区别单击、双击、长按事件 touchStart: function (e) { this.setData({ touchStartTime: e.timeStamp, touchFlag: true }); }, tapJudgement: function (e) { let that = this; that.setData({ touchEndTime: e.timeStamp, }); if (that.data.touchStartTime === null && that.data.touchEndTime === null) { return; } let gap = that.data.touchEndTime - that.data.touchStartTime; if (Math.abs(gap) < 350) { let currentTapTime = e.timeStamp; let lastTapTime = that.data.lastTapTime; that.setData({ lastTapTime: currentTapTime }); if (currentTapTime - lastTapTime < 300 && lastTapTime !== null) { //double tap event clearTimeout(that.data.lastTapTimeoutFunc); wx.showToast({ title: 'double tap event', }); } else { let timer = setTimeout(function () { wx.showToast({ title: 'single tap event', }); }, 300); that.setData({ lastTapTimeoutFunc: timer }); } } }, longpressHandle: function (e) { wx.showToast({ title: 'Trigger long press event', }); this.setData({ touchEndTime: e.timeStamp }); }