Angular Material 修复了工具栏和粘性页脚

Question

一段时间以来，我一直在为这个问题苦思冥想，并想出了一个解决方案。我想要一个固定的工具栏（导航栏）以及一个粘性（浮动）页脚。页脚应浮动在主要部分的底部，但在没有内容时粘在底部。看来我可以做其中之一，但不能同时做。使用这种方法，工具栏是固定的，但页脚不是粘性的。当主要部分为空时，它会紧贴工具栏。

<body ng-controller="MainCtrl" layout="row">

  <div layout="column" flex>
    <md-toolbar class="md-medium-tall">
        <div class="md-toolbar-tools">
            <span>HEADER</span>
            <span flex></span>
            <md-button class="md-raised" ng-click="toggleContent(!displayContent)">onOff</md-button>
            <span flex></span>
            <md-button class="md-raised" ng-click="toggleNum()">half/full</md-button>
        </div>
    </md-toolbar>


    <md-content>
        <div layout="column" flex>
            <div ng-if="displayContent" style="background-color:SteelBlue;color:white;" ng-repeat="card in cards|limitTo: displayLim">body {{card.title}}</div>
            <div style="background-color: red;" flex></div>
            <div style="background-color:orange;color:white;" >footer item</div>
        </div>  
    </md-content>           
  </div>    
</body>

下面的代码用作粘性页脚，但随后工具栏也会滚动。

<body ng-controller="MainCtrl" layout="row">

  <div layout="column" flex>
    <md-toolbar class="md-medium-tall">
        <div class="md-toolbar-tools">
            <span>HEADER</span>
            <span flex></span>
            <md-button class="md-raised" ng-click="toggleContent(!displayContent)">onOff</md-button>
            <span flex></span>
            <md-button class="md-raised" ng-click="toggleNum()">half/full</md-button>
        </div>
    </md-toolbar>

    <div layout="column" flex>
      <div ng-if="displayContent" style="background-color:SteelBlue;color:white;" ng-repeat="card in cards|limitTo: displayLim">body {{card.title}}</div>
      <div style="background-color: red;" flex></div>
      <div style="background-color:orange;color:white;" >footer item</div>
    </div>  
  </div>    
</body>

这似乎是完成我想要做的事情的正确灵活方式，但我无法做到完美。

除了这种方法，我还使用了一种更传统的方法，即使用从 calc(100vh - header - footer) 计算的主要部分高度来实现粘性页脚。当 BAM.. angular-material 决定让他们的工具栏大小随视口大小而变化时，我几乎想通了。我可能会提出更改请求，以便我可以在 md-content 部分中使用空白填充 <div flex></div>，但我想先看看是否有人有更好的解决方案。

Answer 1

也许这段代码可以提供帮助：

angular
  .module('myApp', ['ngMaterial'])
  .controller('MainCtrl', function($scope) {
    console.log('MainCtrl');
    $scope.cards = [{
      text: 'Bla bla bla bla bla bla bla ',
      title: 'Bla'
    }, {
      text: 'Bla bla bla bla bla bla bla ',
      title: 'Bla'
    }, {
      text: 'Bla bla bla bla bla bla bla ',
      title: 'Bla'
    }, {
      text: 'Bla bla bla bla bla bla bla ',
      title: 'Bla'
    }, {
      text: 'Bla bla bla bla bla bla bla ',
      title: 'Bla'
    }, {
      text: 'Bla bla bla bla bla bla bla ',
      title: 'Bla'
    }, {
      text: 'Bla bla bla bla bla bla bla ',
      title: 'Bla'
    }, {
      text: 'Bla bla bla bla bla bla bla ',
      title: 'Bla'
    }, {
      text: 'Bla bla bla bla bla bla bla ',
      title: 'Bla'
    }, {
      text: 'Bla bla bla bla bla bla bla ',
      title: 'Bla'
    }, {
      text: 'Bla bla bla bla bla bla bla ',
      title: 'Bla'
    }];
    $scope.displayContent = true;
    $scope.displayLim = 100;
    $scope.toggleContent = function(showContent) {
      $scope.displayContent = showContent;
    };
  });

<head>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.3.2/angular.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.3.2/angular-animate.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/angularjs/1.3.2/angular-aria.min.js"></script>
<script src="//ajax.googleapis.com/ajax/libs/angular_material/0.8.3/angular-material.min.js"></script>
<link rel="stylesheet" href="//ajax.googleapis.com/ajax/libs/angular_material/0.8.3/angular-material.min.css">
</head>
<body ng-app="myApp" ng-controller="MainCtrl" layout="row">

  <div layout="column" flex>
    
    <md-toolbar class="md-medium-tall">
        <div class="md-toolbar-tools">
            <span>HEADER</span>
            <span flex></span>
            <md-button class="md-raised" ng-click="toggleContent(!displayContent)">onOff</md-button>
            <span flex></span>
            <md-button class="md-raised" ng-click="toggleNum()">half/full</md-button>
        </div>
    </md-toolbar>
    
    <md-content layout="row" flex>
        <div layout="column" flex>
            <div ng-if="displayContent" style="background-color:SteelBlue;color:white;" ng-repeat="card in cards|limitTo: displayLim">body {{card.title}}</div>
            <div style="background-color: red;" flex></div>
        </div>  
    </md-content>
    
    <div layout="row" class="footer" layout-align="center center">
      <h2>My Footer</h2>
    </div>
    
  </div>    
</body>

Answer 2

您应该使用 md-content 作为滚动包装，将您的内容放入 flex，将页脚放入 flex="none"。它将始终粘在 md-content 容器的底部，因为它有一个 CSS overflow: auto。 angular-material layout children

  <md-toolbar class="md-medium-tall">
    <div class="md-toolbar-tools">
      <span>HEADER</span>
      <span flex></span>
      <md-button class="md-raised" ng-click="toggleContent(!displayContent)">onOff</md-button>
      <span flex></span>
      <md-button class="md-raised" ng-click="toggleNum()">half/full</md-button>
    </div>
  </md-toolbar>

  <md-content layout="column" flex>
    <div flex layout="column">
      <div ng-if="displayContent" style="background-color:SteelBlue;color:white;" ng-repeat="card in cards|limitTo: displayLim">body {{card.title}}</div>
    </div>
    <footer flex="none" style="background-color:orange;color:white;">
      <div>footer item</div>
    </footer>
  </md-content>

codepen

Answer 3

我终于明白问题出在哪里了。在 md-content 的主要内容部分下嵌套 divs 时，Safari 出现问题。我通过将 flex="none" 添加到顶层 div.

来修复它

这仅适用于 Chrome:

<md-content layout="column" flex>
 <div flex layout="column">
  <section>
    <div ng-if="displayContent" style="min-height:20px;background-color:SteelBlue;color:white;" ng-repeat="card in cards|limitTo: displayLim track by $index">{{card.title}}
    </div>
  </section>
  <div flex></div>
  <footer flex="none" style="background-color:orange;color:white;">
    <div>footer item</div>
  </footer>
 </div>
</md-content>

这适用于 Chrome 和 Safari：

<md-content layout="column" flex>
 <div flex layout="column">
  <section flex="none">
    <div ng-if="displayContent" style="min-height:20px;background-color:SteelBlue;color:white;" ng-repeat="card in cards|limitTo: displayLim track by $index">{{card.title}}
    </div>
  </section>
  <div flex></div>
  <footer flex="none" style="background-color:orange;color:white;">
    <div>footer item</div>
  </footer>
 </div>
</md-content>

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