Top Angular App Development Blunders that can Ruin Your Project

Top Angular App Development Blunders that can Ruin Your Project
Angular app development company
Angular is one of the most popular JavaScript frameworks, which offers myriad benefits to businesses worldwide. Most businesses prefer using Angular for mobile app development. Numerous giants in the corporate world have used Angularjs app development services for a wide range of projects. Take a look at some examples:
  • Video-streaming applications like NetFlix and YouTube
  • Online Payment application like PayPal
  • Travel application like JetBlue
  • A User-review application like GoodFilms
  • eCommerce applications like Land send, iStock, etc.
  • Job-portal like Upwork
Moreover, it is being predicted that Angular’s demand is going to rise further in the coming years. We can see that Angular’s future looks bright.
But despite the ever-increasing demand and popularity, there are some flaws in this framework like any other framework As such, developers tend to commit certain errors that may ruin your project. So, Angular developers and Angular development services must be aware of these common development blunders so that they are able to create top-grade applications.
In this blog, we have outlined the most common mistakes committed by Angular developers during the mobile app development process. So let’s get started.

Noteworthy Mistakes that Angular Developers tend to commit

Angular app development

Direct Manipulation of DOM

Another blunder that the developers tend to commit is making the changes directly in DOM. While changing the titles in pages or adding images, some developers may make modifications directly in DOM. But it is considered a bad practice. The DOM is a browser-specific API. It may tightly couple the Angular app’s code with the browser and this won’t allow the developers to target any other rendering environment later.

Lack of knowledge of Important Tools

This is one of the basic requirements that an Angular app development company must look into the developers while hiring.
Effective usage of the available development tools in Angular like Protractor and TestWhizin Angular helps in successful project development. Lack of knowledge on any of these tools or inability to use them can result in critical issues sooner or later. It affects project management, error handling in the project, the performance of the end product, and much more.

Improper Code-organization

In Angular, organizing the code into small chunks is considered beneficial as it simplifies the development process and also helps to track any errors and resolve them easily. This approach is much useful when several developers work on the same project. But since this framework uses MVC architecture, at times the developers may add excessive code to a single controller. Such an improper distribution of code may create issues in the later stages of development.

Cleaning up the Subscriptions

Unsubscribing to the unnecessary and older subscriptions is also a vital step in Angular development. The developers must clean up such subscriptions from time-to-time as these can cause a threat to data security and lead to several other issues. They should also avoid new subscriptions constantly.

Declaring Functions Incorrectly

Sometimes, the developers fail to assign the functions to a specific variable. In such cases, the code is at risk of being manipulated. So, it is essential to properly declare functions to the variables. It provides the following benefits:
  • Makes the code neat and maintainable
  • Allows easy splitting of files
  • Eases out the testing and maintenance process

Not using the controller AS Syntax

For assigning a model to the controller object, usually, the developers use $scope. But injecting the scope isn’t the right way to do it. Instead, using the controller As syntax is quite an effective and comparatively simpler method. Also, this syntax can be used in multiple ways in app development. But this syntax also has a drawback, that it provides confusing results while handling various nested scopes.

Unnecessary Use of jQuery

jQuery is commonly used for event-handling, for AJAX operations, and for making DOM manipulation easier. But it is advisable to first use the features available in Angular to the fullest and then use jQuery if required. Developers tend to first prefer jQuery without exploring options in Angular and this may result in unnecessary complications.

Improper Scope Binding

As we know, Angular uses the MVC model. Here, the scope is a set of built-in objects that consists of app data. Scope binds controller and view in the MVC model. At times, developers don’t follow the scoping rules provided by Angular which may result in issues in the app development process. The developers must properly assemble their scope objects.

Not using the Extension- Batarang

Batarang is a highly advantageous Google Chrome extension that aids in development as well as the debugging process. But this extension is often ignored by the developers and not used to its fullest potential.

Putting too many Tasks for the Controllers

In the hurry to meet deadlines, developers may mix logic layers and allocate more tasks to controllers than necessary. This can result in a code that will execute more functions for a certain situation and may end-up in performance issues. For instance- having several event handlers or performing AJAX calls in controllers.

Ignoring Pre-launch testing

Needless to say, it is imperative to do adequate testing before an app is launched in the market. The app should be tested in cross browsers and different environments using tools like BrowserStack or LambdaTest if required. This helps in identifying the bugs if any. These bugs can be worked upon to deliver a successful app. Failing to do so can reduce the success rates to a large extent.

A few more Considerable Mistakes in Angular Development

  • Failing to use the event-handlers properly
  • Not optimizing the Angular app
  • Using the Isolated scope directives more than required which results in several errors.
  • Using more Watchers than needed.
  • Heavy processing that can lead to a frozen browser.
  • Overusing the Resolves that can increase loading times and slow down the app.

Final words:

In an Angular development company, it is quite normal for the developers to make some mistakes while building apps. Sometimes it is due to negligence, sometimes it is due to lack of experience and sometimes it is due to pressing timelines. Even experienced Angular developers tend to make critical mistakes at times during Angular mobile and web app development. But the knowledge of these errors and mistakes in advance can curtail them to a great extent and lead to time-saving and better app performance as well.
Hope this blog proved useful to you.
We would like to know about your experiences too.
If you have come across any other mistakes in Angular app development, do share it with us in the comment section below.

Ionic app development: Creating a Location-sharing app with Ionic!

Ionic app development: Creating a Location-sharing app with Ionic!
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Most of the modern-day applications have the facility of Google maps and location-sharing. Whether a taxi-booking app or a social media app or a food-ordering app, all have this vital feature embedded in the apps. Since this feature has become essential, several businesses have developed advanced location-sharing apps or at least embedded this feature in diverse apps.
So, in this blog, we are going to look at the basic procedure to build a location-sharing app or integrate this vital feature in them. Here we will use Ionic, the popular cross-platform framework, for this purpose. The reason to consider Ionic app development is that this technology is easy to adopt, enables the development of captivating UI/UX, and feature-rich performance-based apps. It is built on AngularJS which offers various functionalities for development and a robust environment that makes the code more manageable. Besides, the Ionic framework utilizes Cordova plugins and allows widget development. Owing to such myriad benefits, a plethora of businesses hire Ionic app development services for architecting enterprise applications.
So let’s get started, but before that, let us have a quick look at the criteria that the Ionic app developers would be assuming before starting with the development.
  1. We will be using Firebase for saving the data.
  2. We will create a custom directive for integrating Google Maps into our application.
  3. We will be creating a mobile app for the Android platform.

Steps to Architect a Location-sharing app with Ionic

Check out the process of employing Ionic application development to create a location-sharing app.

Installations of relevant softwares

  • The first step is to install Node.js which automatically installs npm i.e. node package manager. Now you can install Ionic with the use of npm.
  • Also, install the required dependencies for the Android platform. After installing them, you need to create a blank Ionic project.
  • Now navigate to the project directory iMapApp. After this, you can add the desired platform, develop it, and emulate. Now, a blank app will probably be running in the Android emulator. But, this process of running the app in the emulator every time will be time-intensive. So, it is advisable to use Ionic CLI for running the application in the browser. Once again, it is essential to install the required dependencies with the use of npm.
  • After installing the dependencies, you need to run “ionic serve” in the terminal for the app to run in the browser.

UI Creation

  • You can begin with the addition of a new template for showing the map. Now create a new folder known as www/templates in the project directory. Also, create a file named map.html inside templates.
  • Google Maps will be rendered inside the HTML map where a div known as #map will be present. Also, there will be an input text box below the map for the users to fill the description and also a button for the details to be saved.
  • Now we will be using the “ionNavView” directive to create different templates based on various states. Add this directive to index.html page. The next step is the removal of the current contents of the body tag and addition of the “ionNavBar” directive above the “ionNavView” for building a top bar.
  • The title for the “ionNavBar” will be set from the rendered “ionView”.
  • For the proper organization of the app interfaces into multiple states, the Angular UI router module is utilized by Ionic. Now open www/js/app.js as we will define a state for the map.html template by writing the required code.
  • After implementing this code a new state for the URL “/map” is defined. This state will be rendering the template map.html and will be controlled by “MapCtrl” controller. To set the map as the default state, command “$urlRouterProvider.otherwise(‘/map’)” is used.
  • Now create a file- “controller.js” inside “www/js/” and also add its reference in the file called- “www/index.html”
  • Then define the angular module first for defining controller code inside “controller.js”
  • After this, define the controller “MapCtrl” and then enter the “starter.controllers” module into the starter app. After saving this, you can view the map.html template.
  • Then you should add the Google Map in map.html which can be done by the creation of a custom directive known as “map”. Let us now define the directive in controller.js and add the directive attribute to div #map in map.html.

Adding default parameters like longitude, latitude, zoom in the Maps

  • First, pass the longitude, latitude, and zoom parameters to the google map directive. With the use of parameter “attrs” you can access these attributes inside the link function of the directive.
  • For evaluation of AngularJS expressions, “scope.$eval” is used.
  • The next step is to include the Google Maps API reference in index.html. Using the default values, Google Map’s latitude and longitude can be defined. Also, define map options for Google Map.
  • With appropriate code, add style to “www/css/style.css” for styling the “#map” div.
  • Lastly, save all the modifications to view Google Maps on the map page.

Adding a marker to the Google Maps

  • We need to modify the directive with the right code. Marker’s default position is set as longitude and latitude that is passed as an attribute. Also, the draggable option is set as true.
  • After implementing the code and saving the changes, a draggable marker will be visible in Google Maps.

Tracking the position of Marker

  • For this purpose, we will be attaching a “dragend” event to the Google Maps marker. Also, for attaching the drag end event listener inside the directive, add the right code.
  • After saving these changes, just try to drag the marker. Now inspect the browser console which must include the current longitude and latitude.

Saving all the details

  • In “MapCtrl”, define a $scope variable called “user” which will consist of information like longitude, latitude, and the data that the user enters.
  • In “MapCtrl” controller, create a function known as “saveDetails” which will use “scope.user” variable for fetching the required information.
  • Update the variables- “$scope.user.longitude” and “$scope.user.latitude” in the “dragend” event listener’s callback function when the users will move the marker on the map
  • For updating the model bindings, call the “scope.$apply” function. After this, you need to attach the following:
    • a ngModel directive to the description input text box
    • a ngClick directive to the save button
  • Now save the data to Firebase. For this, you will first need to register with Firebase if you don’t have an account. After logging in, you will get a unique firebase URL.
  • After signing to the Firebase account, in the dashboard, you will find a plus link next to this URL. Click on that plus link and enter the below-mentioned inputs to get a sub URL- /MapDetails.
    • value as 0
    • name as “MapDetails”
  • To use firebase in the app, Include the script references in index.html. Insert firebase in controller.js and MapCtrl controller. Create a firebase object inside this controller. Create an instance of the firebase object. Use the firebase push API inside the saveDetails function, for saving the data to firebase. Once saved, refresh the application.
  • Now just drag the marker to a certain location on the Maps, enter some description and save this. All this data should be present when you check the firebase dashboard.
  • After the data is saved, using the Ionic popup, create an alert for notifying the users. In the MapCtrl controller, inject the $ionicPopup. Again, in the MapCtrl controller, add a function known as “showAlert”.
  • This function calls the “$ionicPopup” service for showing a pop-up having a template and a title.
  • After this, you should call “showAlert” in the success callback of the push API call.
  • Finally, save all the changes and the details once again. After saving these details in Firebase,you will get a pop-up showing a success message. This completed the process.

Conclusion:

We just saw the step-by-step method to integrate Google maps in the Ionic Apps. We hope this will be useful to the Ionic developers, an Ionic mobile app development company as well as the entrepreneurs who intend to create the best location sharing app. aiming to design impeccable apps with location-sharing functionality.
Was this blog useful to you? Let us know your vital thoughts in the comment section.