I've set a service using Angular named uIdentity. But, when I try to call it this way:
app.controller('foo', function(uIdentity){});
I get this error message:
Error: [$injector:unpr] Unknown provider: uIdentityProvider <- uIdentity
How do I fix this, please?
Try this
app.controller('foo', ['uIdentity',function(uIdentity){
}]);
or with more items
app.controller('foo', ['$scope','uIdentity',function($scope, uIdentity){
}]);
Basically you are defining the name of the objects as they are defined and they will be mapped in sequence. Another example:-
app.controller('foo', ['$scope','uIdentity',function($x, y){
//$x is $scope and y is uIdentity
}]);
If you get error in-spite of that you have something wrong in the uIdentity itself.
In general you may want to make it a habit to always use that syntax. It also makes your code resilient from uglification/minification/obfuscation.
Make sure you define the dependencies
app.service('uIdentity', [function(){
}]);
You have to ensure, that your provider is in the same angular.module like your application OR your application depends on the module your provider is located in.
If your uIdentity-provider is part of a module called myIdentityModule e.g. your application needs myIdentityModule as a dependency.
Your code might be sth like
angular.module('app', ['myIdentityModule'])