最近分别用vue和Android实现了一个券码复制功能,长按券码会在上方弹出一个拷贝的icon提示,点击icon将券码内容复制到剪贴板。现将一些经验代码分享给大家以供参考。废话不多说,先上效果图
vue实现:
npm install clipboard --save
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<div class= "coupon-count-container" @click= "closePopBubble" > <ul> <li v- for = "(couponItem, index) in couponArray" :key= "index" > <div class= "coupon-code-item" > <img class= "pop-bubble-copy" :style= "{left: x + 'px', top: y + 'px', visibility: showPopBubble && index === clickedIndex ? 'visible' : 'hidden'}" src= "../../assets/couponPayResult/copy_icon.png" @click= "copyToClipboard($event, couponArray[clickedIndex].codeNo)" > <span class= "code-label" >券码:</span><span class= "code-active" v-tap= "{longMethod: getPopBubble, params: index}" >{{couponItem.codeNo}}</span> </div> </li> </ul> </div> |
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data: function () { return { couponArray: [], showPopBubble: false , x: 0, y: 0, clickedIndex: 0 } } .coupon-code-item { position: relative; padding: 10px 0; font-size: 13px; } .pop-bubble-copy { position: absolute; width: 73px; height: 39px; } .code-label { margin-left: 28px; margin-right: 26px; color: #989898; } .code-active { color: $color-ff5532; } methods: { closePopBubble() { if ( this .showPopBubble) { this .showPopBubble = false ; } }, getPopBubble(e, index) { this .showPopBubble = true ; this .clickedIndex = index; // 对x,y的计算结果进行微调 this .x = e.target.offsetLeft + 30; this .y = e.target.offsetTop - 40; }, copyToClipboard(e, text) { this .showPopBubble = false ; var clipboard = new Clipboard(e.target, {text: () => text.replace(/\s/g, "" )}); clipboard.on( 'success' , e => { // 释放内存 clipboard.off( 'error' ); clipboard.off( 'success' ); clipboard.destroy(); }); clipboard.on( 'error' , e => { // 释放内存 clipboard.off( 'error' ); clipboard.off( 'success' ); clipboard.destroy(); }); clipboard.onClick(e); } } |
实现原理是将气泡弹窗设置为绝对定位,根据券码的位置来计算气泡弹窗相对于父元素的位置,其中父元素为每一条item的包裹元素coupon-code-item
本次的实现难点是需要自己手动定义vue的长按点击事件:
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Vue.directive( 'tap' ,{ bind:function(el,binding){ var startTx, startTy,endTx,endTy,longClick,timeOutEvent, longMethod=binding.value.longMethod, method = binding.value.method, params = binding.value.params, propagation=binding.value.propagation; el.addEventListener( "touchstart" ,function(e){ var touch=e.touches[ 0 ]; startTx = touch.clientX; startTy = touch.clientY; if (longMethod && typeof longMethod=== 'function' ){ longClick= 0 ; timeOutEvent =setTimeout(function(){ longClick= 1 ; longMethod(e, params); }, 500 ) } if (!propagation){ if (e.stopImmediatePropagation) { e.stopImmediatePropagation(); } else { e.propagationStopped = true ; } } }, false ); el.addEventListener( "touchmove" ,function(e){ if (longMethod && timeOutEvent){ clearTimeout(timeOutEvent); timeOutEvent = 0 ; } }, false ); el.addEventListener( "touchend" ,function(e){ var touch = e.changedTouches[ 0 ]; endTx = touch.clientX; endTy = touch.clientY; if (longMethod && timeOutEvent){ clearTimeout(timeOutEvent); } if ((timeOutEvent!= 0 && longClick== 0 )||!longMethod){ if ( Math.abs(startTx - endTx) < 6 && Math.abs(startTy - endTy) < 6 ){ if (params instanceof Array){ method(...params); } else method(params); } var focusInput=document.querySelector( 'input:focus' ); if (focusInput)focusInput.blur(); var tagName=el.tagName.toLowerCase(); if (tagName=== 'input' ||tagName=== 'textarea' )el.focus(); //获取焦点 if (!propagation){ if (e.stopImmediatePropagation) { e.stopImmediatePropagation(); } else { e.propagationStopped = true ; } e.stopPropagation(); return false ; } } }, false ); } }) |
Android实现:
Android原生实现起来比较简单,直接贴代码
以上两种实现方法全部完成,为了简单直接让UI切了一张气泡弹窗的显示图,如果感兴趣也可以用代码手动绘制
总结
以上所述是小编给大家介绍的分别使用vue和Android实现长按券码复制功能,希望对大家有所帮助,如果大家有任何疑问请给我留言,小编会及时回复大家的。在此也非常感谢大家对服务器之家网站的支持!
如果你觉得本文对你有帮助,欢迎转载,烦请注明出处,谢谢!
原文链接:https://blog.csdn.net/weixin_41480546/article/details/102516948