使用 ngb-carousel 在单个滑块页面中显示多个图像

Question

我正在使用 Angular 6 和 ng-bootstrap 并尝试轮播。

旋转木马工作正常，但无法在一个滑块中显示 4 个图像。它在每个滑块中显示 1 张图像。

这是来自 API 响应的数据：

  games= [{"title_id":1,"title_name":"MIssion Impossible","title_img":"https://media.services.cinergy.ch/media/box1600/f1323e57a2c4ea79dde779a89d561f85bfbe6bf5.jpg","genres":[{"id":1,"name":"Action"},{"id":2,"name":"Adventure"}]},{"title_id":2,"title_name":"Matrix","title_img":"https://www.sideshowtoy.com/assets/products/903302-neo/lg/the-matrix-neo-sixth-scale-figure-hot-toys-903302-01.jpg","genres":[{"id":1,"name":"Action"},{"id":2,"name":"Adventure"},{"id":6,"name":"Fantasy"}]},{"title_id":3,"title_name":"Avengers","title_img":"http://media.comicbook.com/2018/03/avengers-infinity-war-poster-all-iron-man-version-1096449.jpeg","genres":[{"id":1,"name":"Action"},{"id":2,"name":"Adventure"},{"id":6,"name":"Fantasy"}]},{"title_id":4,"title_name":"Stargate SG-1","title_img":"https://image.tmdb.org/t/p/w300_and_h450_bestv2/rst5xc4f7v1KiDiQjzDiZqLtBpl.jpg","genres":[{"id":1,"name":"Action"},{"id":5,"name":"Drama"},{"id":2,"name":"Adventure"},{"id":9,"name":"Sci Fi"}]},{"title_id":5,"title_name":"Scooby Doo","title_img":"https://images-na.ssl-images-amazon.com/images/G/01/aplusautomation/vendorimages/1cdd3ea2-f14f-416b-9aaa-644a9a01ad8c.jpg._CB321085566_.jpg","genres":[{"id":1,"name":"Action"},{"id":10,"name":"Thriller"},{"id":6,"name":"Fantasy"}]}];

这是我的 component.html 代码：

<ngb-carousel *ngIf="games" [showNavigationArrows]="showNavigationArrows" [showNavigationIndicators]="showNavigationIndicators">
    <ng-template ngbSlide *ngFor="let image of games" style="">
        <div class="" style="">
            <div class="col-xs-3 col-md-3 col-lg-3 col-sm-6">
                <img class="" src="{{image.title_img}}" width="" >
            </div>
        </div>
    </ng-template>
</ngb-carousel>

每张幻灯片的每张图片都即将到来。

我试过如下静态图片，

<ngb-carousel *ngIf="games" [showNavigationArrows]="showNavigationArrows" [showNavigationIndicators]="showNavigationIndicators">
    <ng-template ngbSlide  style="">
        <div class="">
            <img src="https://media.services.cinergy.ch/media/box1600/f1323e57a2c4ea79dde779a89d561f85bfbe6bf5.jpg" width="200px" class="img-responsive" style="float:left">
            <img src="https://www.sideshowtoy.com/assets/products/903302-neo/lg/the-matrix-neo-sixth-scale-figure-hot-toys-903302-01.jpg"  width="200px" class="img-responsive" style="float:left">
            <img src="http://media.comicbook.com/2018/03/avengers-infinity-war-poster-all-iron-man-version-1096449.jpeg"  width="200px"  class="img-responsive" style="float:left">
        </div>
    </ng-template>
    <ng-template ngbSlide  style="">
        <div class="">
            <img src="https://media.services.cinergy.ch/media/box1600/f1323e57a2c4ea79dde779a89d561f85bfbe6bf5.jpg" width="200px" class="img-responsive" style="float:left">
            <img src="https://www.sideshowtoy.com/assets/products/903302-neo/lg/the-matrix-neo-sixth-scale-figure-hot-toys-903302-01.jpg"  width="200px" class="img-responsive" style="float:left">
            <img src="http://media.comicbook.com/2018/03/avengers-infinity-war-poster-all-iron-man-version-1096449.jpeg"  width="200px"  class="img-responsive" style="float:left">
        </div>
    </ng-template>
</ngb-carousel>

结果是：

但是，在移动设备中，它显示的是一个低于一个。我只需要显示一张图片，点击箭头导航，下一张图片应该显示

Answer 1

这是一种可能的解决方案：

桌面版和移动版分开：

将桌面版和移动版分开，每个版本都有一个ngb-carousel，通过*ngIf选择。 *ngIf 检查变量 mobile，由（参见下面的 html）定义：

ngOnInit() {
  if (window.screen.width === 360) { // 768px portrait
    this.mobile = true;
  }
}

在中了解更多信息。

滑块

手机版用你的代码（我在下面集成了）

对于有多个图像的桌面：

将数组划分为多维数组（幻灯片的第一维，图像的第二维）。如果您有 2 张幻灯片，每张 3 张图片，您的数组将为 2*3。

this.games = ["a", "b", "c", "d", "e"];
this.gamesFormatted = [];
var j = -1;

for (var i = 0; i < this.games.length; i++) {
    if (i % 3 == 0) {
        j++;
        this.gamesFormatted[j] = [];
        this.gamesFormatted[j].push(this.games[i]);
    }
    else {
        this.gamesFormatted[j].push(this.games[i]);
    }
}

用双循环显示轮播:

<div *ngIf="games">
    <!-- Mobile section : one image per slide -->
    <ngb-carousel *ngIf="mobile" [showNavigationArrows]="showNavigationArrows" [showNavigationIndicators]="showNavigationIndicators">
        <ng-template ngbSlide *ngFor="let image of games">
            <div class="" style="">
                <div class="col-xs-3 col-md-3 col-lg-3 col-sm-6">
                    <img class="" src="{{image.title_img}}">
                </div>
            </div>
        </ng-template>
    </ngb-carousel>

    <!-- Desktop section : multiple images per slide -->
    <ngb-carousel *ngIf="!mobile" [showNavigationArrows]="showNavigationArrows" [showNavigationIndicators]="showNavigationIndicators">
        <ng-template ngbSlide *ngFor="let group of gamesFormatted">
            <div class="" style="" *ngFor="let game of group">
                    <img class="" src="{{game.title_img}}">
            </div>
        </ng-template>
    </ngb-carousel>
</div>

我没有测试 html 部分，所以肯定有改进的地方。

Answer 2

你试过这样吗：

`<ngb-carousel *ngIf="games" [showNavigationArrows]="showNavigationArrows" [showNavigationIndicators]="showNavigationIndicators">
  <ng-template ngbSlide  style="">
    <div class="">
      <img src="https://media.services.cinergy.ch/media/box1600/f1323e57a2c4ea79dde779a89d561f85bfbe6bf5.jpg" width="200px" class="img-responsive" style="float:left">
    </div>
    <div class="">
      <img src="https://www.sideshowtoy.com/assets/products/903302-neo/lg/the-matrix-neo-sixth-scale-figure-hot-toys-903302-01.jpg"  width="200px" class="img-responsive" style="float:left">
    </div>
    <div class="">
      <img src="http://media.comicbook.com/2018/03/avengers-infinity-war-poster-all-iron-man-version-1096449.jpeg"  width="200px"  class="img-responsive" style="float:left">
     </div>
  </ng-template>
</ngb-carousel>
`

使用 ngb-carousel 在单个滑块页面中显示多个图像

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