Android Tutts

If you want to deliver a web application (or just a web page) as a part of a client application, you can do it using WebView . The WebView class is an extension of Android's View class that allows you to display web pages as a part of your activity layout. It does not include any features of a fully developed web browser, such as navigation controls or an address bar. All that WebView does, by default, is show a web page. A common scenario in which using WebView is helpful is when you want to provide information in your app that you might need to update, such as an end-user agreement or a user guide. Within your Android app, you can create an Activity that contains a WebView , then use that to display your document that's hosted online. Another scenario in which WebView can help is if your app provides data to the user that always requires an Internet connection to retrieve data, such as email. In this case, you might find that it's easier to build a WebView...

A layout defines the structure for a user interface in your app, such as in an activity. All elements in the layout are built using a hierarchy of View and ViewGroup objects. A View usually draws something the user can see and interact with. Whereas a ViewGroup is an invisible container that defines the layout structure for View and other ViewGroup objects, as shown in figure 1. Figure 1. Illustration of a view hierarchy, which defines a UI layout The View objects are usually called "widgets" and can be one of many subclasses, such as Button or TextView . The ViewGroup objects are usually called "layouts" can be one of many types that provide a different layout structure, such as LinearLayout or ConstraintLayout . You can declare a layout in two ways: Declare UI elements in XML . Android provides a straightforward XML vocabulary that corresponds to the View classes and subclasses, such as those for widgets and layouts. You can also use Android ...

Android’s WebView allows you to integrate a webpage as a part of the app. WebView comes with all the features that of a desktop browser like managing history, cookies, HTML5 support and lot more. Using webview you can build very cool apps like integrating HTML5 games in the app. In this article we are going to learn the basic usage of WebView starting from displaying a webpage to building a simple in-app browser that provides navigation and bookmark support. You will also learn how to use the WebView with other material elements like CollapsingToolbar and NestedScrollView to achieve the native android experience. 1. The Basic Usage Integrating a WebView in your app won’t take more than two steps. First you need to include the WebView element in your xml layout. < WebView      android:id = "@+id/webView"      android:layout_width = "match_parent"      android:layout_height = "wrap_content" /> ...