Developing apps for iOS devices is not so easy and sometimes even the experienced iOS developers make some mistakes while developing an application for iOS devices. The most critical mistake is iOS memory mistakes which less experienced iOS developers often make while designing and developing iOS applications. We will discuss such iOS memory mistakes so that the future iOS developers can be made aware and they don’t commit such iOS memory mistakes.
Some of the common memory mistake most of the iOS developers do are:-
- Missing deallocate method as a part of each class
Many developers forget to include dealloc method in each and every class, which lead to memory management problems during iOS development process. Developers should also make appropriate dealloc method in all classes to avoid memory management issues.
- Not calling super dealloc method
Also many times it happens that most of the developers never call super dealloc method from dealloc, which results in the crashing of the memory and cause serious issues in the app development process. You should note that you can’t call any dealloc method hence you must first call super dealloc method and that should only be called in your dealloc method.
- Ignoring Resource Consumption
It is important that your iOS app should consume less memory, data, and power. Consuming less memory can lead to the popularity of your iOS app. Most of the users don’t like to use apps which take up too much of phone memory making the mobile device slower, drain their device’s battery too fast or use a lot of internet data. Hence if you are an iOS developer then you should not ignore the resource consumption while developing an app.
- Writing NSLog statements in production ready code
NSLog statements are very helpful while debugging of the iOS mobile app, but if you overuse it then it can also slow down the performance of the app. If you will use more NSLog statements within your app then it will consume more memory which will result in getting memory warning from your app itself. Hence you should try not to make such mistakes and better you can try to bypass NSLog statements at all if you don’t need them.
- Underestimating the iOS debugging commands
Less experienced iOS developers don’t know about the power of iOS debugging tools and also never consider them during the iOS app development process. For e.g. NSDebugEnabled, MallocStackLogging, and other environment variables can help you out to identify the causes for the crash. Hence you should try to get familiar with iOS debugging commands and use them within your iOS mobile app development to avoid memory crashes which happen more frequently.
- Not setting pointers to nil
Other than making above major memory mistakes, many iOS mobile app developers often forget to set the pointer to nil after releasing and using retain count of the object which can cause serious memory issues later on during the app development process.
- Not leveraging the power of accessory which makes memory management easier
If your class has a property that is an object then you should make sure that any object that has been set as the value is not deallocated while you are using it. Hence you must claim ownership of the object when it is set. You should also make sure that you relinquish ownership of any currently held value. Sometimes it may seem tedious but if you use accessor methods regularly then the chances of having a problem with memory management decrease a lot. If you are using ‘retain’ and ‘release’ on instance variable in all of your code then you are not doing the right thing.
We have just discussed some of the crucial iOS memory mistakes which most of the iOS app developers make during their iOS application development. Hence these memory mistakes should be avoided right from the beginning of the iOS app development process. Although the fundamental concepts described in iOS’s Memory Management Policy are straightforward there are some practical steps you can take to make managing memory easier which we have just discussed. These steps will ensure that your programs remain reliable while at the same time minimizing its resource requirements.