Interpretation of AppIcon icon settings and critical value of App memory warning, appiconapp

Interpretation of AppIcon icon settings and critical value of App memory warning, appiconapp

Some people have asked the critical iOS memory warning value and some configuration information about AppIcon in the project. I believe that for new customers, similar problems may occur, record it for later query.

1. Briefly describe the configuration information of the AppIcon icon.

1) in the App Icon check box on the right, only iPhone iOS7.0 and Later are supported, indicating that these icons only support iPhone devices (including iPod) for iOS systems, the minimum is 7.0 to the latest;

2) The 2x icon can be displayed on the Retina display, and the 3x icon can be displayed on the Plus screen with a size of 5.5 inch;

3) then, let's look at the middle icon to distinguish between the desktop icon, Setting, and Spotlight icon:

A. iOS 7-9 60pt indicates the size of the desktop icon 60pt from iOS 7 to the latest system

B. Spotlight iOS 7-9 40pt indicates to search for the (Spotlight) icon from the mobile desktop drop-down list (supports iOS 7 to the latest 40pt );

C. Settings-iOS 5-9 29pt indicates the search icon in the mobile phone Settings (supports iOS 5 to the latest 29pt)

 

Now we use the simulator 5 S and iOS version 9.3 for testing.

Desktop icon:

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Drop-down Desktop Search icon:

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Set the search icon:

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2. Enable the image LaunchImage parameter descriptionFirst look:

1) iPhone Portrait iOS 8, 9: indicates the iPhone device Portrait screen, supports iOS 8 to the latest

2) iPhone Landscape iOS 8,: indicates the horizontal screen of the iPhone device, supporting iOS 8 to the latest

 

3. Memory warning critical value of the App

When the memory usage of an app is too high, the program reports a "memory warning 』

- (void)didReceiveMemoryWarning {    [super didReceiveMemoryWarning];    // Dispose of any resources that can be recreated.}

 

What is the critical value of memory warning? You can find the answer from the Xcode tool information:

When a single program uses half of the total device memory, the program reports a "memory warning 』!

For example, if the running memory is MB and the running of the program occupies MB, the system generates a warning;

1g running memory, the program running occupies m of the memory warning ....

The following are three (4S, 5c, and simulator ):

 

 

 

Bytes ------------------------------------------------------------------------------------

 

 

Bytes ------------------------------------------------------------------------------------

 

 

Bytes ------------------------------------------------------------------------------------

 

 

Link: http://www.cnblogs.com/tandaxia/p/5855250.html