Getting started with iOS development: About app icons

For personal developers who develop applications for the first time, in addition to programming, they also need to consider creating icons, starting pictures, and other basic components of some applications. This article describes icons. The reason why I write this article is that some people do not pay attention to some details, so the icons cannot be completed at one time, resulting in unnecessary time waste.

The first thing to say is that the icons to be created are not only the icons on the app, but also the icons to be displayed on the app store. These icons are of different sizes.

Is the size of the required icons. As shown above, the maximum number of icons to be created is 1024*1024, not 144*144. Therefore, you need to select the right icon when the PS is large or small. In addition, you do not need to use the 1024*1024,512*512 icon. In addition to the size, pay attention to the image quality requirements. For example:

The icons uploaded to the app store must be 72ppi, RGB, and not transparent. In addition, the icon on the app must be

As shown above, the icon is also required to be opaque, and we do not actually see the transparent icon. The app icon must be PNG.

In addition to the preceding icons, we recommend that you set and search for the icons and display them when pushing messages. The size requirements are as follows:

These icons can not be used. On the iPhone, the iPad automatically scales the icons to display them.

For the icon naming, This is not required in the latest xcode,Pull the icon directly.Of course, for the Retina screen icon, it should be the same as the ordinary screen icon name, followed by @ 2x, you can also follow the official requirements:

Icon.png.The name for the app icon on iPhone or iPod Touch.

Icon-72.png.The name for the app icon on iPad.

Icon-Small.png.The name for the search results icon on iPhone and iPod Touch. This file is also usedfor the settings
Icon on all devices.

Icon-Small-50.png.The name of the search results icon on iPad.

If you want to add a small icon, you should name it as required.

The above is a brief introduction to the application icons.