Question

我使用以下控制器，以便在 dashboard 页面中安卓后退按钮退出应用，但在其余页面上它会返回。在 dashboard 页面之前，我有一个教程，我只向用户提供一次，然后我必须覆盖android后退按钮，以便在 dashboard 如果按下则会退出，它可以正常使用此代码：

angular

  .module('az-app')
  .controller('DashboardController', function ($scope, $state, $ionicPlatform) {

    /**
     * While user on dashboard.html we don't want Android back button to return
     * to tutorial views so we override it so that in case that back button is pressed
     * to exit app which is in accordance with android lifecycle.
     *
     */
    $ionicPlatform.registerBackButtonAction(function () {
       if($state.is('/dashboard') || $state.is('dashboard')){
        navigator.app.exitApp();

       }
    }, 100);


  });

现在的问题是，当我转到以下视图时，它仍然可以作为退出按钮，但我希望它只是一个不是仪表板的任何其他视图中的后退按钮，所以我试过这个以下控制器：

angular

  .module('az-app')
  .controller('DirMedicoController', function ($scope, $state, $ionicPlatform) {

    $ionicPlatform.registerBackButtonAction(function () {

      navigator.app.backHistory();

    }, 100);

  });

所以现在它会返回功能，但是当它在 dashboard 时再次按下来自过去的控制器它会覆盖它的功能，而现在它不会退出它。 / p>

更新

感谢mudasser ajaz的回答，我终于可以回答：

angular

  .module('az-app')
  .controller('DashboardController', function ($scope, $state, $ionicPlatform, $location, $ionicHistory) {

    /**
     * While user on dashboard.html we don't want Android back button to return
     * to tutorial views so we override it so that in case that back button is pressed
     * to exit app which is in accordance with android lifecycle.
     *
     * Else if not on dashboard just work as normal back button
     *
     */
    $ionicPlatform.registerBackButtonAction(function() {
      if ($location.path() === "/dashboard") {
        navigator.app.exitApp();
      }
      else {
        $ionicHistory.goBack();
      }
    }, 100);


    $scope.backToPolicy = function () {
      $state.go('intro');
    }

    $scope.showDirMedico = function () {
      $state.go('dirmedico');
    }

  });

Answer 1

Do this in your dashboard controller

$ionicPlatform.registerBackButtonAction(function() {
//var path = $location.path()
  if ($location.path() === "/dashboard" || $location.path() === "dashboard") {
    navigator.app.exitApp();
  }
  else {
    $ionicHistory.goBack();
    //navigator.app.goBack();
  }
}, 100);

And add $location and $ionicHistory as dependency

.controller('DashboardController', function ($scope, $state, $ionicPlatform, $location, $ionicHistory) {

Remove registerBackButtonAction from other controller.

覆盖android硬件后退按钮，使其退出一个页面并在下一页中返回

更新

1 个答案: