A developer is always in search for solutions to the problem. Read the article "Top 12 common mistakes that Android developer makes".
Android operating system is broadly used in smartphones, tablets also in smart watches and television too. Now the Android programming is very much advanced from the Lollipop OS updates, related to the older versions of Android operating system platforms due to the entry of new material design. Mobile application development is different than the desktop programming with the various screen size, speed, memory, user’s interaction with the application etc. Developers refocusing from desktop development to mobile development make similar mistakes because they are new to this. Also, in the case of mobile application development, there are numerous devices with the variety of screen sizes, hardware configurations, operating system versions etc. There are several ways that an App can fail on different devices even if an expert programmer built it.
There are odds of your application UI design not appear good for different gadgets except in rare cases. Every Android developer should keep in mind following tips when developing the application.
Density-independent pixels(dp) are different than normal pixels (px).
Resources (images, icons etc.) are included multiple times for different densities and orientations.
Eg: Icons for high density-independent pixel (hdpi) must include in the drawable-hdpi folder.Use 9-patch
Use 9-patch drawables because it will get stretch to fit the screens
A key component of Android is intents. The intent is a way of passing data between various parts of the app, also on different apps on the system. It is healthier to use intents for the situations like sharing content, capturing pictures, recording video, picking contracts, events adding, links opening with native apps etc. Other than setting permission in the manifest and writing custom code for it.
In Android, the aim of the main thread is to keep the user interface responsive. If it is blocked then ANR will happen. Always keep in mind to use worker/background threads to avoid the blocking of the main thread like Bitmap loading, API calls, Writing and reading in SD card, database operation etc.
In android too much large images are going to consume quite a lot of memory. Regrettably, we don’t have large RAM sizes when it comes to small smartphones. The application will be slow and heavy if the android developer fails to use the resources to get the images off the mound.
This is the mistake seen in almost every Android developer except the experienced ones and those who have experience in software development. New and aspiring Android developers think that it is a small project other than building an app for mobile device. And they think it doesn’t need prior planning and can finish it in a weekend. It is no different from any other software development project and it needs specifications, schedules/ timelines, bug tracking and a release and maintenance plan.
Every new version of Android introduces new APIs and some would be tempted to use new API 's for their application development. This would greatly lessen the number of prospective users for your app. On the other hand, an experienced Android developer, would check for the availability of the new APIs in the Android Support Library, and use that in its place. The Android Support Library package is a set of code libraries that deliver backward-compatible versions of Android framework APIs as well as features that are only accessible through the library APIs.
User experience is the key factor for the success and failure of an app as it is made for users. For the support to overcome this, several seminars, annual events, and conference are held in this topic. Yet, the Android developers fail to place enough importance on this vital factor. Before finalizing an app, run usability or user acceptance testing (UAT) numerous times to check how it runs on the mobile platform. Such experimenting can give you better perception and how people would like to interact with the app.
When you have an issue, Android SDK document doesn’t answer all of it. We suggest that you go pile overflow. It has Android developer precise labels.
In one application, app developers contain tonnes of features and functionalities. Many developers ignore to consider the battery life and memory management. It tends poor performance of the app. And so try to prevent such mistakes.9. After the publication of the application, it does not have any updates
Without updating, the application cannot perform well; many apps are not even updated after the publication. Developers should maintain the application by updating. It is needed to update the adjustment by the developers for the smooth performance
Mobile apps developed should be capable to perform multitask at a time. Asynchronous threads allow an app to run background actions such as make an API call, while users still perform tasks successfully with the app.
This avoids hanging when users are accessing the application and permits them to interact efficiently with the app.
A fragment in this context represents a behavior or a portion of a user interface in an activity. Fragments can be of great use as they help to enhance different screens, can be supervised by the parent activity easily and can also be reused, positioned and combined if need be.
While designing apps, it is necessary to indicate the minimum version the app supports. It is simpler to support newer versions of an Android operating system. Outdated software is mostly more complex to code and often lead to bugs. One main reason why apps fail is as of poor testing. Apps are released on Google Play without being checked on various screens leading to too many bugs.
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