What Impact Does Simulated Metrics Have

What impact does simulated metrics have?

The Simulated Metrics are mostly a design aid to help you lay out your interface. They have little direct impact on the .xib*[1]. They are very helpful because you can simulate things like your view controller being imbedded in a navigation controller, which gives you less space to work with since the navigation bar takes up some space. They are also very handy if you are laying out a viewController that will only be used in landscape. At the time they were introduced, it was the only way to check how your interface would look on the shorter iPhone 4 display and the taller iPhone 5 display*[2].

I frequently set the Size to iPhone 4 inch because: 1) I find working in the square viewController distracting, 2) It takes up much less screen real estate allowing me to see more of my Storyboard on my laptop display. This method is much less dangerous that changing the size class to wC hR because the latter will actually affect which constraints are used for different sized devices.


[1] The Size and Orientation metrics will affect the size of the viewController as it is stored in the .xib or .storyboard file. If you leave the setting as Inferred, Xcode will use 600 x 600 as the viewController's size. Normally, this makes no difference, because the viewController will be properly sized to the device when it loads.

[2] At the time Simulated Metrics were introduced, this was the way to test designs for the iPhone 4s vs. the new taller iPhone 5. Apple has since introduced other better ways of checking out designs on various sized devices.

Changing storyboard simulated metrics is affecting size on device

If I understand the issue you're having correctly, you're wondering why the scrollwidth is 375 on a 4.7 inch device, when you've changed the simulated metrics to a 4 inch phone (320 width).

Answer: The simulated metrics have nothing to do with influencing the width of on a device. You should build you application in the default "inferred" simulated metric and build the view in wAny hAny.

If you want to see how the device will look on a device, you can use the assistant editor and preview :

assistant editor

Preview:

preview

Sizes:

Screen sizes

Does auto layout effect how things look when changing simulated metrics size?

On the scene of this ViewController, go on to resolve auto layout option. There, select the update frames option and click on fix misplacement. This will bring your label on the right edge.

Sample Image

Does auto layout effect how things look when changing simulated metrics size?

On the scene of this ViewController, go on to resolve auto layout option. There, select the update frames option and click on fix misplacement. This will bring your label on the right edge.

Sample Image

Simulation Performance Metrics

I might not understand what you exactly want. But here is my suggestion. Let me know if my solution is inaccurate/irrelevant and I will edit/delete accordingly.

Assume you have a certain metric (say compatibility of the pairs or waiting time). If you just have the average or total number for this metric over all the users, it is kind of useless. Instead you might want to find the distribution of of this metric over all users. If nothing, you should always keep track of the variance. Once you have the distribution, you can calculate a probability that particular algorithm A is better than B for a certain metric.

If you do not have the distribution of the metric within an experiment, you can always run multiple experiments, and the number of experiments you need to run depends on the variance of the metric and difference between two algorithms.

Simulated Metrics size for iPhone 5.5-inch doesn't show the interface correctly in iPhone 6 plus device

Select the button/ view you want. Then simply use the shortcut ⌥⇧⌘=. This will Reset to Suggested Constraints.

For this to work successfully, try moving your button to the suggested areas, i.e. move the button/ view to the top right corner like you have till the dotted blue lines appear.

Once done it should show what you expect on the interface builder but to be sure test on the simulator and/ or Device.



Related Topics



Leave a reply



Submit