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Gestures are fairly undiscoverable—not obvious at first glance. With gestures on iPhone: Provide another way to do the same action. For example, in the Mail app, users can swipe to delete or can use the Edit button to reach the Delete command. Assign the gesture to functions that aren't critical. For example, it's possible users will try to navigate with ...


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There is no native ios support for something like toast that I am aware of. According to ios Human Interface guidelines the standard convention for addressing temporary messages would be to use the UI Alert. The guidelines go on to suggest the following: If the alert does this... Informs users of problems they can do nothing about: If the problem isn’t ...


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The top message slider that slides down from the top of the screen. On my iPhone6 I see it both with the controls and just with the info (texts, im messages etc). It slides back up in a few seconds unless reacted to.


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The reason people use percentage as opposed to px/or is to make it responsive and show the same on all screen sizes, or in this case iOS Devices. Take a look at these screen sizes and how much they differ. If you set a button to 200px wide it will take up most of the screen on an iPhone 3 in portrait orientation but will be a small fraction of an iPhone 6+ ...


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One more comment: users with motor impairments will find challenging to tap small targets in your app. It has been shown that if you place buttons next to the bezel area (border) it is easier for them to access. Also, try to provide an alternative to pinch gesture (like buttons for zooming in and out), as it is the most difficult thing to do for someone ...



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