Ionic3实现图片瀑布流布局

<ion-content>
 <div id="container">
 <div class="box" *ngFor="let image of img_data">
 <div class="box_img">
 ![]({{image.src}})
 </div>
 </div>
 </div>
 <ion-infinite-scroll (ionInfinite)="doInfinite($event)">
 <ion-infinite-scroll-content loadingSpinner="circles" loadingText="正在加载...">
 </ion-infinite-scroll-content>
 </ion-infinite-scroll>
</ion-content>

page-about {
 ion-content {
 #container {
 position: relative;
 .box {
 padding: 5px;
 float: left;
 .box_img {
 padding: 5px;
 border: 1px solid #cccccc;
 box-shadow: 0 0 5px #ccc;
 border-radius: 5px;
 img {
 width: 150px!important;
 height: auto;
 }
 }
 }
 }
 }
}

import { Component } from '@angular/core';
import { NavController, IonicPage } from 'ionic-angular';
@IonicPage({
 name: 'about'
})
@Component({
 selector: 'page-about',
 templateUrl: 'about.html'
})
export class AboutPage {
 img_data = [{
 src: "assets/images/a.jpg"
 }, {
 src: "assets/images/b.jpg"
 }, {
 src: "assets/images/c.jpg"
 }, {
 src: "assets/images/d.jpg"
 }, {
 src: "assets/images/e.jpg"
 }, {
 src: "assets/images/f.jpg"
 }, {
 src: "assets/images/g.jpg"
 }, {
 src: "assets/images/h.jpg"
 }, {
 src: "assets/images/i.jpg"
 }, {
 src: "assets/images/j.jpg"
 }, {
 src: "assets/images/k.jpg"
 }, {
 src: "assets/images/l.jpg"
 }, {
 src: "assets/images/m.jpg"
 }, {
 src: "assets/images/n.jpg"
 }, {
 src: "assets/images/o.jpg"
 }]
 constructor(public navCtrl: NavController) {

 }

 ngAfterViewInit() {

 }
 ionViewWillEnter() {
 this.getNode();
 }
 getNode() {
 let parentNode = document.getElementById("container");
 let childNodeArray: any = parentNode.getElementsByClassName("box");
 let screenWidth = document.documentElement.clientWidth;
 let childWidth = childNodeArray[0].offsetWidth;
 let num = Math.floor(screenWidth / childWidth); //获得一排摆的个数 用Math.floor()转换为整数
 parentNode.style.cssText = "width:" + childWidth * num + "px; margin:0 auto"; //固定container的宽并设置居中
 this.setImagePosition(num, childNodeArray);
 }

 setImagePosition(num, childArray) {
 var imgHeightArray = [];//定义数组用于存放所有图片的高度
 for (var i = 0; i < childArray.length; i++) { //遍历所有图片
 if (i < num) {
 imgHeightArray[i] = childArray[i].offsetHeight; //取得第一排图片的高度
 } else {
 var minHeight = Math.min.apply(null, imgHeightArray); //获取第一排图片中高度最小的图片
 var minIndex = this.getMinHeight(imgHeightArray, minHeight); //函数获得高度最小的图片的位置
 childArray[i].style.position = "absolute"; //绝对定位图片
 childArray[i].style.top = minHeight + "px"; //图片距顶部像素
 childArray[i].style.left = childArray[minIndex].offsetLeft + "px"; //图片距左的像素
 imgHeightArray[minIndex] = imgHeightArray[minIndex] + childArray[i].offsetHeight; //将最低高度的box的高度加上它下方的box高度
 }
 }
 }

 getMinHeight(imgHeightArray, minHeight) {
 for (var i in imgHeightArray) {
 if (imgHeightArray[i] == minHeight) { //循环所有数组的高度 让它等于最小图片的高度 返回i值
 return i;
 }
 }
 }
//这里是借助ionic的上拉加载代替网页的滚动监听实现加载更多
 doInfinite(infiniteScroll) {
 let parentNode = document.getElementById("container");
 for (var i = 0; i < this.img_data.length; i++) {
 let divNode = document.createElement("div"); //创建div节点
 divNode.className = "box";//为节点添加box类名
 parentNode.appendChild(divNode);//添加根元素
 let subDivNode = document.createElement("div");//创建节点
 subDivNode.className = "box_img";//为节点添加类名
 divNode.appendChild(subDivNode);//添加根元素
 var img = document.createElement("img");//创建节点
 img.src = this.img_data[i].src;//图片加载路径
 subDivNode.appendChild(img);//添加根元素
 }
 this.getNode();
 setTimeout(() => { infiniteScroll.complete() }, 1000);
 }
}