![]() Button View – This adds button to the Interface. You can think of this as a Textbox Control. The EditText – This will allow the user to type/input text into the view. The BMI Calculator we are building from the final image has two TextView controls.ī. The TextView – Think of this as the Label Control (if you are coming from a Windows Desktop developer) which displays texts only. Choose the Orientation for the layout – In our case, it’s the vertical OrientationĪ.Change the RelativeLayout to LinearLayout In Fig 6, the root layout is the RelativeLayout.The RelativeLayout will allow you to add controls (views) side by side while the LinearLayout can only be done in a linear fashion (like a stack of plate on top of each other) which can either be vertical or horizontal which the user must specify using the android:orientation attribute. You can specify the layout direction with the android:orientation attribute. Linear Layout is a view group that aligns all children in a single direction, vertically or horizontally. The RelativeLayout is a view group that displays child views in relative positions – Google Developer Guide Fig 6 was setup to run on Nexus 4 device on the Android Simulator but you can always change it by clicking on the device dropdown (as shown in the red arrow and select the device). You can set up the simulator to run on your prefered device. You can change the default android simulator device to test your app. Delete the OnRequestPermissionsResult( ) Method and the Xamarin.Essentials code in line 35 as we don’t need themįig 6: The activity_main.xml file – Flickr.Follow the steps below to load the XAML Designer. While XML is used mainly for web applications, XAML is used for creating controls for both Windows and Mobile applications that target many devices. It looks a lot like XML but the only difference is based on its use. It is used to create and/or add controls to the Designer in a declarative way. XAML stands for Extensible Application Markup Language. We can also see the changes updated as we type the controls in the XAML file. The Designer is a user interface for the device simulator where we can add controls directly from the toolbox. The next thing to do is to load the Designer and the XAML file. We have successfully created the project. In that way, we would learn how each control works. We are using the Blank App template as we want to start and create all the controls from the ground up. Fig 4: Selecting the Blank App template – Flickr
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