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Author Archives: Isaac Taylor

Android Performance Tweaking: ParseArray Versus Hashmap

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One of the more recent Android ADT updates added Android Lint. Lint will check your Android project for simples things that you can change to improve your app. Lint notifies you about things like: Unused resources Simple code changes to improve performance Inefficiencies in XML layouts such as nested weights or unused layouts And a few other things. When I ...

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Android: Smooth List Scrolling

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If I had to compare iOS to Android and only list one major benefit iOS has over Android, it would be the scrolling list performance, hands down (and I’m not the only one, or two, or three to say this…). Seeing as scrolling lists are essential to just about every major mobile app, it affects the end user the most. ...

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Android: Facebook’s Notification Widget

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Have you ever checked out the Facebook app? When you click on the Notifications button at the top, the app creates a nice overlaid window that contains a scrolling list view of all your info. It doesn’t dim out the background, and it also disappears if you click anywhere on the screen that isn’t in the overlaid window itself. The ...

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Does your App Support Android 4.0? Think Again

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Think your app supports Android 4.0 just because you support 2.2 or 2.3? Maybe not. If your app uses a few common Java classes, you may want to double check your app on several 4.0 devices. Probably like most developers, when we saw Ice Cream Sandwich release, we didn’t have any thoughts that our app may not work properly. All ...

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SQL Lite Performance on Android

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For those who are unaware, Android has some build-in classes to support the use of SQL Lite databases. It provides a great way to structure a small amount of data within Android. However, there are a few pitfalls of using these classes that you should watch out for though. Depending on which version you are using, a given query could ...

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Writing Code that Doesn’t Suck

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Striving to write good code should be the goal of every Software Developer. Writing code that is easily maintainable, robust, simple, and makes sense is no easy task. It takes years of practice and uncountable hours of time to become a good Programmer, and the job is never really done. Recently I ran across these few lines of code that ...

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Android Tutorial: Gestures in your app

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Gestures in mobile apps are pretty common place these days. Almost anyone with smart phone experience knows that pinching will usually zoom in on an image. Now, using Gestures in Android is a snap. OnTouch All gestures are really handled with one event on an Activity. OnTouch is called anytime a View is touched on the screen. It provides all ...

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Android: Gallery View without Pictures

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Android’s Gallery View is one of the first widgets Android created. It’s so old now that some people even find it hard to find. The Gallery view provides a list of scrollable objects much like the standard ListView. The one main benefit of using the Gallery View is its snap-to-position feature. When the user stops scrolling, the images that end ...

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