Improving Android App Performance By Addressing Challenges

Developing mobile apps for the Android OS offers freedom to the developers and app owners can access to the continuously growing user-base. Though, developers face a lot of challenges in the mobile app performance optimization.

There are a lot of Android OS versions which the developers find difficult to maintain when it comes to app development. It has become a big challenge to face as there are more than 170 devices that run on Android OS. Also, each device contains different features with reference to camera buttons, screen size, keyboard forms, and so on.

Here are some factors that can affect the app performance and how to improve that aspect.

Slow Rendering

One of the most common apps performance problem is slow rendering. Sometimes what clients want from developers and what developers do, may not match. While trying to give the best visuality, they fail in the development process.

Rendering is measured in terms of time and ensures that the app is running smoothly at a constant 60 frames/second without any delayed or dropped frame.

What Causes Slow Rendering?

The system tries to redrawn app activities every 16ms. It implies that an app has to perform all the logics for updating the screen in that time interval.

When an app can’t complete the logic in 16 ms, it’s called a dropped frame. Due to this, the app animation started in the screen does not seem smooth.

Below Given Some Tools To Improve The Rendering:

Hierarchy Viewer

This tool is built in Android Device Monitor, ADM, which allows developers to inspect their app layout speed and properties for each view in their layout hierarchy. It may help them to determine performance caused by their view hierarchy structure, helping them to reduce overdraw by simplifying hierarchy.

Profile GPU Rendering

This tool gives the quick visual representation of the time an app takes to render the UI window frames relative to that 16ms/frame benchmark.

Application Launching Time

An app launch may be executed in one of the two states, each influencing the time taken by an app to become visible to the users:

1.Cold Start

2.Warm Start

1. Cold Start

The cold start refers to the starting of an app from scratch. It happens in a few cases such as the app is going to launch just after the booting of the device or the system has killed that app. When the cold start takes place, the system performs three tasks:

· To load and launch the app

· Display the blank starting window for an app immediately after the launch

· Create the app process

2. Warm Start

The warm start of an app is lower-overhead and much simpler than the cold start. In the warm start, the system brings app activities to the foreground. If all the apps’ activities residents in memory, then that application can avoid the need to repeat the object installation, layout inflation, rendering, and so on.

Resolving App Launching Time Delay

Developers should initialize the objects that are required immediately. For instance, instead of creating the global static objects, developers can move to the singleton pattern, where an app will initialize the object whenever it accesses them for the first time.

Compressing app view hierarchy by reducing nested or redundant layouts

Moving resource installation so that an app will be able to perform app launching on the different thread

Allowing the app to load, display app views, and later updates the visual properties which depend on bitmaps as well as other resources too.


Layouts can directly make an impact on the user experience. When they don’t implement properly, layouts can lead to the memory lacking app with slow UIs. each layout and widget developers add to their app requires layout, installation, and drawing. In other words, using nested instances of the LinearLayout may lead to the excessively deep view hierarchy.

Ways to Improve the Layout Performance?

· Optimising Layout Hierarchies

· Re-using Layout with the <Layouts> tag

· Loading Views on Demand

· Power Usage

One of the most important parts of the Android app development process is Battery Usage Reduction. This optimization will lead to retaining the users. Because most of the times, user uninstall the app due to that battery draining issue.

For improving the battery usage in an android app, the developer can take various steps.

· Reducing network calls as much as possible

· Using GPS and Alarmmanager carefully

· Performing batch scheduling

At Last,

Creating an app is a basic thing, but optimizing it and addressing its issues properly are important aspects. Developers should look after their process and take some steps towards mobile app performance optimization.

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