angular.js中一组复选框，怎么实现选中其中一个，其他不能选？

以下代码就是个思路，有很多问题，比如我发现的，列表不能抽取出来，用ng-for不可行。.disabled需要自己去调节样式。


<!DOCTYPE html>
<html lang="en" ng-app="app">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <link href="//cdn.bootcss.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
    <div ng-controller="demo">
        <p>当前值： {{hobby}}</p>
        <ul>
            <li>
                <label>吃：</label>
                <input type="checkbox" ng-true-value="1" ng-model="hobby" ng-class="{disabled: hobby}" ng-change="handleCheckbox($event)" />
            </li>
            <li>
                <label>睡：</label>
                <input type="checkbox" ng-true-value="2" ng-model="hobby" ng-class="{disabled: hobby}" ng-change="handleCheckbox($event)" />
            </li>
        </ul>
    </div>

    <script src="//cdn.bootcss.com/angular.js/1.5.7/angular.min.js"></script>
    <script>
        angular.module('app', [])
            .controller('demo', ['$scope', function ($scope) {
                $scope.hobby = false;
            }]);


    </script>
</body>
</html>

<!DOCTYPE html>
<html lang="en" ng-app="app">
<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <link href="http://cdn.bootcss.com/bootstrap/3.3.6/css/bootstrap.min.css" rel="stylesheet">
</head>
<body>
    <div ng-controller="demo">
        <p>当前值： {{hobby}}</p>
        <ul>
            <li ng-repeat="i in [1,2,3]">
                <label>吃：</label>
                <input type="checkbox" ng-click="check(i)" ng-disabled="hobby == i" ng-checked="hobby == i" />
            </li>
        </ul>
    </div>

    <script src="http://cdn.bootcss.com/angular.js/1.5.7/angular.min.js"></script>

    <script>
        angular.module('app', []).controller('demo', ['$scope', function ($scope) {
            $scope.hobby = 1;

            $scope.check = function (i) {
                $scope.hobby = i;
            }
        }]);
    </script>
</body>
</html>

ng-model需要一致。用value控制内容.

<script>
  angular.module('radioExample', [])
    .controller('ExampleController', ['$scope', function($scope) {
      $scope.color = {
        name: 'blue'
      };
      $scope.specialValue = {
        "id": "12345",
        "value": "green"
      };
    }]);
</script>
<form name="myForm" ng-controller="ExampleController">
  <label>
    <input type="radio" ng-model="color.name" value="red">
    Red
  </label><br/>
  <label>
    <input type="radio" ng-model="color.name" ng-value="specialValue">
    Green
  </label><br/>
  <label>
    <input type="radio" ng-model="color.name" value="blue">
    Blue
  </label><br/>
  <tt>color = {{color.name | json}}</tt><br/>
 </form>
 Note that `ng-value="specialValue"` sets radio item's value to be the value of `$scope.specialValue`.

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