First, an example fragment XML file in res/layout/fragment_edit_name.xml: Īnd defining the fragment itself extending from the support version of dialog fragment: import //. Let's start by providing the code for creating a completely custom dialog based on an XML view. If any imported class (FragmentManager, DialogFragment, etc) uses the android.app namespace, compile-time errors will occur. Note: The entire guide below requires every fragment related class imported to use the namespace and not the android.app namespace. xml and add following code: In this step we open an xml file and add the code for displaying an image view and different button on the screen in a relative layout. Step 2: Open res -> layout -> activitymain. Use onCreateDialog when you just need to construct and configure a standard Dialog class (such as AlertDialog) to display. Step 1: Create a new project in Android Studio and name it ImageViewScaleTypes. Use onCreateView when the entire view of the dialog is going to be defined via custom XML. The minimum that must be implemented when creating a DialogFragment is either the onCreateView method or the onCreateDialog method.

This is typically used for displaying an alert dialog, a confirm dialog, or prompting the user for information within an overlay without having to switch to another Activity.ĭialogFragment is now the canonical way to display overlays using Dialog directly is considered bad practice. DialogFragment is a specialized Fragment used when you want to display an overlay modal window within an activity that floats on top of the rest of the content.

Android studio fragment dimentions