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Personally, I would start thinking in physical dimensions these days. With the prevalence of retina screens, pixels are becoming a confusing unit. It's best to start in cm's and worry about pixels later. My old and cheap phone (HTC Wildfire) has a screen of about 5 by 7 cm (240 by 320 pixels). That's a good place to start. These days, going from there to ...


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Mid-range smartphones usually come in with at least a 4in screen and a 800x480 resolution. Higher-end phones come in 4.7in to 5in, with resolutions that go up as far as 1280x800. These should be good for starters.


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Android provides a widget which allows the user to select a number from a predefined range. The number picker's appearance depends on the current theme. For more information, see the NumberPicker reference in the Android Developer docs.


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The final word on confirmation dialogs is given in the article Never use a warning when you mean undo by Aza Raskin on A List Apart. Here's the key idea: People habituate: they press 'yes' without thinking, because 99% of the time that's what they want. The confirmation dialog isn't effective at asking for the required attention. People shouldn't have to ...


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I like your design, but in my opinion it seems a little dangerous to place an invitation to delete content above the content itself. There are exceptions to this rule but generally I think it would be safer to place it beneath. Further to Brendon's answer, I think you could condense this further to just the one button: the word "Delete", with the trash icon ...


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The button to initiate the delete of an item can be an icon. After clicking this it is considered good practice for irreversible actions have a confirmation / cancel option as either a screen or a little inline control (depending on the magnitude of the delete). At this point the user needs more reassurance of what exactly will happen. They must have ...


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The major issue here is I don't know how to answer the question about deletion. You've asked the question in plain English, but I assume you are expecting me to answer in symbolic form. Do I click the 'trash symbol' to delete the message? It would be much clearer if the symbol was appended with the words "Yes, delete this comment". How do I cancel? There's ...


0

There could be a fun UI in fixing the tag cloud UI for touch. Your tag cloud could dynamically expand on first touch to offer a spaced out view of the tags within say 50 pixels (device dependent) of the centre of the touch event. Easy then to select required target. Touches are very fast so user is not inconvenienced much by touching twice, as long as ...


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Tag clouds don't work on mobile devices. They don't really work on desktops either. When I am trying to design something and it doesn't seem to work, sometimes I take a step back and try to figure out what is the job to do. Don't get caught up in the form (tag cloud) or the platform (mobile). What are the problems are you trying to solve? And what is the ...


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You should always consult developer.android.com for questions regarding system norms and design guidelines. For pixel perfect designs you may want to look into 9-patch images using 9-patch for your buttons and other layouts such as cards will allow your designs to scale without blur or distortion. As for any icons you will need to simply calculate their ...


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Back takes you back one step, and forward is an undo for back; more like a redo button. It's unnecessary in most cases--forward buttons don't see much use in browsers either; less than 1%. It would make more sense to focus on why users mistakenly press back instead. Breadcrumb Navigation: Further Investigation of Usage


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The main reason in my opinion for not having a forward button is that you don't want to give the user too many options and most apps are simply not built to handle such an intent. The Android OS is fairly complex as it is and the back button is there specifically to make the experience less confusing and provide a sense of place within the system. Many apps ...


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How about using breadcrumbs in the action bar? http://developer.android.com/reference/android/app/FragmentBreadCrumbs.html EDIT: Breadcrumbs in the action bar can let the user know where they are and where they have come from and if they have anywhere else to go. In this case, I thought that maybe showing the breadcrumbs can let the user know where the are ...


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I'm not sure if you've tried this already but consider using expandable notifications. Show a maximum 4 pieces of information in there followed by "..." To show the user they must click the notification to view more information. This design pattern is used by gmail and many others and I'd consider it to be good ux. Honestly if you can present the more ...


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Dukes had a good suggestion. I had seen something like that in the various weather apps too. See below. Seems like a good idea and should be easily recognizable.



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