How are maps created in mobile applications?

Question

Android

Do not connect Google or Yandex maps, but write your own, how is this done? Are there any books/articles/videos about this? Does it take a picture and on it is already laid, for example, a route or something else? There are no ideas about this yet. For this case, python is fine or java will be better? Thank you.

Answer 1

For example, like this: https://www.mapbox.com/android-docs/maps/overview/

Answer 2

You register it in a view for sending request.
Don't forget to enter the correct url

$.ajax({
  url: "/url"
}).done(function(data) {
  console.log(data);
});

in actionTest you write

\Yii::$app->response->format = \yii\web\Response::FORMAT_JSON;
return Posts::find()
                    ->where(array('group_id' => $group_id,'post_id' => $post_id))
                    ->one();