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);
}
}
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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 );
}
})
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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