I am not able to redirect page on ng-click

i have try lots of method to redirect page but its not working for me can any one have this solution

below is my code

controller.js

.controller(‘TestCtrl’,function($scope,$state) {

$scope.register = function($scope,$state, $location) {
alert('function called');
  //   console.log("Button was pressed!");
  //  $location.transitionTo('/app.search');
$scope.state.go('app.search');
 // $location.path("/app/search");
 //   $state.go("search");
    //  $location.path('/app.search');
 //  $scope.changeRoute('#/app/search');
 // $window.location.href = '/app/search';
}

})

registration.html

<form >

  <div class="list">
    <label class="item item-input ">
      
      <input type="text" placeholder="FIRST NAME">
    </label>
    <label class="item item-input">

      <input type="text" placeholder="LAST NAME">
    </label>
    <label class="item item-input item-select">
     <div class="input-label">
  COUNTRY
</div>
      <select >
          <option selected>Algeria</option>
          <option >Bangladesh</option>
          <option >Belgium</option>
            <option >China</option>
            <option >France</option>
            <option >India</option>
            <option >Japan</option>
            <option >North Korea</option>
            <option>USA</option>
              
        </select>
     
    </label>
    <label class="item item-input ">
        <input type="text" placeholder="EMAIL">
    </label>
    <label class="item item-input ">
     <ion-radio ng-model="choice" ng-value="'A'">MALE</ion-radio>
      <ion-radio ng-model="choice" ng-value="'B'">FEMALE</ion-radio>

    </label>
    <label class="item item-input">
      <input type="password" placeholder="PASSWORD">
    </label>
    <label class="item item-input">
      <input type="password" placeholder="RETYPE PASSWORD">
    </label>

    <label class="item">
      <button class="button button-block button-positive" type="submit" ng-click="register()">Register</button>
    </label>
  </div>

</form>

app.js

.state(‘app.search’, {
url: ‘/search’,
views: {
‘menuContent’: {
templateUrl: ‘templates/search.html’
}
}
})

.state(‘app.registration’, {
url: ‘/registration’,
views: {
‘menuContent’: {
templateUrl: ‘templates/registration.html’,
controller:‘TestCtrl’
}
}
})