Web and Mobile Development articles
At times you might want to jump the user to a specific View inside a ViewFlipper on the click of some other View or some such scenario. So let’s say we have a ViewFlipper in our layout resource like this:
Continue reading “Quick Tip: Android ViewFlipper Jump/Move/Switch To a Certain Child View”
Let’s say you have a byte[] array of image data that you want to convert into an Image by showing up in an ImageView in your layout. We can achieve that with a few lines of code.
Continue reading “Quick Tip: Android Convert byte[] Data to ImageView”
Gestures are those subtle motions to trigger interactions between the touch screen and the user. It lasts for the time between the first touch on the screen to the point when the last finger leaves the surface. We’re all familiar with it as it’s the most common way to communicate with apps on our mobiles, tablets, etc. these days. Some examples are scrolling in an app by swiping vertically/horizontally, pinch to zoom, long press to select and so on.
Continue reading “Detecting Common Gestures on Android Using GestureDetector”
Touch gestures like tapping, swiping vertically/horizontally, panning, etc. occurs when a user places one or more fingers on the screen and by the time the last finger looses contact, the entire pattern of finger movements is interpreted as a particular gesture by your android application. First all the relevant data of touch events are gathered and then they’re interpreted to see which gestures they match and the pertaining actions are executed as specified in the code.
There are times when you’ll want to change the hint (placeholder) color and the text color of a SearchView widget. Here’s a small snippet that’ll allow us to do it:
Continue reading “Quick Tip: Android Change Action Bar SearchView Hint (Placeholder) and Text Color”
GridView is a ViewGroup just like ListView that allows us to display items in a two-dimensional scrolling grid. Just like a ListView the data into a GridView is populated by an Adapter (ListAdapter) that fetches data from various sources like an array or a database. It’s mostly used to build image, video, audio galleries.
Spinners in Android are like select dropdowns (HTML) of web development. Once tapped, it shows a list of options in a dropdown menu from which one can select a value. It is very simple to add it as a View in the Layout file (just as any other view like TextView or EditView):
Continue reading “Understanding Android Spinners and Populating Them with (Adding) a Set of Items”