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#How to write a simple android app code
The following line of code needs to be added in the AndroidManifest.xml file above the application tag as shown below:
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Still WebView comes with its own set of cons such as it’s a much more expensive widget to use, in terms of memory consumption than a TextView. It’s simple to use and can be good for basic scenarios.WebView can also assist with common browsing metaphors, such as history list of visited URLs to support backwards and forwards navigation.
![how to write a simple android app how to write a simple android app](https://i.ytimg.com/vi/0JUgBBynPdU/maxresdefault.jpg)
Threading Components that Attach to an Activity/Fragment AsyncTaskĪsyncTask is the most basic Android component for threading. Threads that are not attached to any activity/fragment: These threads can continue to run beyond the lifetime of the activity/fragment (if any) from which they were spawned.Threads that are attached to an activity/fragment: These threads are tied to the lifecycle of the activity/fragment and are terminated as soon as the activity/fragment is destroyed.In Android, you can categorize all threading components into two basic categories: In this article, you will learn about some common scenarios in Android development where threading becomes essential and some simple solutions that can be applied to those scenarios and more. However, with so many different approaches at hand, choosing the right one can be quite confusing. For this reason, they are usually performed in separate threads, which thereby avoids blocking the UI while they are being performed (i.e., they are performed asynchronously from the UI).Īndroid provides many ways of creating and managing threads, and many third-party libraries exist that make thread management a lot more pleasant. When they are called in the main thread, they are called synchronously, which means that the UI will remain completely unresponsive until the operation completes. Network operations and database calls, as well as loading of certain components, are common examples of operations that one should avoid in the main thread. To keep your application responsive, it is essential to avoid using the main thread to perform any operation that may end up keeping it blocked. The main thread is responsible for dispatching events to the appropriate user interface widgets as well as communicating with components from the Android UI toolkit. When an application is launched in Android, it creates the first thread of execution, known as the “main” thread. Every Android developer, at one point or another, needs to deal with threads in their application.