$ scope.showDefaultState`は未定義に評価されます

Question

$scope.showDefaultStateはif文に設定されているにもかかわらず未定義に評価されるのはなぜですか？

どのようにして未定義に評価されずに「真」の値を取得するのですか？

// Determine if user has signed up in past 
$cordovaNativeStorage.getItem("userPicture").then(function (value) { 
    $scope.userInfo.userPicture = value; 
}, function (error) { 
    $log.log(error); 
}); 
$cordovaNativeStorage.getItem("userProfile").then(function (value) { 
    $scope.userInfo.userProfile = value; 
}, function (error) { 
    $log.log(error); 
}); 
$cordovaNativeStorage.getItem("userSelectedCategories").then(function (value) { 
    $scope.userInfo.userSelectedCategories = value; 
}, function (error) { 
    $log.log(error); 
}); 

if($scope.userInfo.userPicture != null && $scope.userInfo.userProfile != null && $scope.userInfo.userSelectedCategories != null) { 
    $scope.showDefaultState = true; 
} 

console.log($scope.showDefaultState); 

if($scope.showDefaultState == null) { 

// stuff goes here... the code in this block always runs 
} 

Answer 1

約束を組み合わせて、すべてを一度に評価することができます。 $q

var p1 = $cordovaNativeStorage.getItem("userPicture"); 
var p2 = $cordovaNativeStorage.getItem("userProfile"); 
var p3 = $cordovaNativeStorage.getItem("userSelectedCategories"); 

$q.all([p1, p2, p3]).then(function (data) { 
    $scope.userInfo.userPicture = data[0]; 
    $scope.userInfo.userProfile = data[1]; ; 
    $scope.userInfo.userSelectedCategories = data[2]; 
    if ($scope.userInfo.userPicture != null && $scope.userInfo.userProfile != null && $scope.userInfo.userSelectedCategories != null) { 
     $scope.showDefaultState = true; 
    } 

}).catch (function (err) { 
    console.log(err.message); // some coding error in handling happened 
});