When do I need to add a setup activity to my widget?
If your widget is customizable or requires any configuration, you must include a Configuration Activity, which will start automatically as soon as the user places the widget on their home screen. Configuration activities can also be useful if you have a lot of ideas about what information and features you want to include in your widget.
If you include a setup activity, note that the onUpdate() method will not be called when the user creates a widget instance, since the ACTION_APPWIDGET_UPDATE stream is not sent when a setup activity is started. It is the responsibility of the configuration activity to request this first update directly from the AppWidgetManager.
Table of Contents
How are activities used in an Android app?
Each activity can then start another activity to perform different actions. For example, the main activity in a simple email application might provide the screen that displays an email inbox. From there, the main activity could launch other activities that provide screens for tasks like writing emails and opening individual emails.
Introduced in Android 4.0. The widgetCategory attribute declares whether your App Widget can be displayed on the home screen (home_screen), the lock screen (keyguard), or both. Only Android versions prior to 5.0 support lock screen widgets. For Android 5.0 and above, only home_screen is valid.
Since a widget layout is already smaller than a normal activity layout, you shouldn’t waste valuable space by giving users a way to relaunch the configuration activity directly from the widget layout.
How to create configuration activity in android app?
To create a configuration activity, you will need to follow the steps below. 1. Create the activity layout This is exactly the same as creating the layout for a normal activity, so create a new layout resource file and add all the UI elements as usual.
How do you start an activity in an Android app?
Unlike other programming paradigms where applications are started with a main() method, the Android system starts code in an activity instance by invoking specific callback methods that correspond to specific stages of its lifecycle. .
There are several causes for the error Problem loading widget. The most common is a temporary hang that is simply resolved by restarting or re-adding the widget. However, a corrupted app cache or lack of permissions for custom launchers can also cause it. Solution 1 – Remove the widget and add it again
The AppWidgetProvider class extends BroadcastReceiver as a convenience class for handling App Widget broadcasts. AppWidgetProvider receives only event broadcasts that are relevant to the app widget, such as when the app widget is updated, removed, enabled, or disabled.
Defines the initial layout of the application widget, defined in XML. Additionally, you can implement an application widget configuration activity. This is an optional activity that is launched when the user adds your app widget and allows you to modify the app widget’s settings at creation time. The following sections describe how to configure each of these components.
Think of an email widget, for example, where you have to provide an account before the inbox can be displayed. Or a static photo widget where the user has to assign the image to be displayed from the gallery. Android widgets display their configuration options right after you place the widget on a home panel.
What should be the result of the configuration activity?
The app’s widget host calls the setup activity, and the setup activity should always return a result. The result should include the ID of the app widget passed by the intent that started the activity (saved in the intent’s extras as EXTRA_APPWIDGET_ID).
These views are called widgets in the UI, and you can publish one with an application widget provider. An application component that can contain other application widgets is called an application widget host.
A placeholder view displays a generic representation of your widget, giving the user a general idea of what the widget is displaying. WidgetKit calls the placeholder (in:) to request an input that represents the widget’s placeholder configuration. For example, the game status widget would implement this method as follows:
How to call an activity method from a fragment?
Trying to call a method in my activity from a fragment. I want the fragment to provide the data to the method and get the data when the method returns. I want to achieve something similar to calling a static method, but without the use of static because it creates problems in the activity. New to snippets so I need an easy and pedagogical explanation!
What happens when you call an activity in Java?
All activities in Android must go through the activity lifecycle in order for them to have a valid context attached to them. By treating an Activity like a normal Java class, you end up with a null context. Since most of the methods in an Activity are called in its Context, you will get a null pointer exception, which is why your application crashes.
Find the Multicon widgets and select the one you want to use by holding down your finger and moving it to the location where you want it to be displayed. Once done, tap and hold on it to open its settings menu.
Permissions App Widgets Android Manifest
android:resource – Specifies the location of the AppWidgetProviderInfo resource. AppWidgetProviderInfo defines the essential qualities of an App Widget, such as its minimum layout dimensions, its initial layout resource, how often the App Widget is updated, and (optionally) a setup activity to launch at build time. creation.
When is updateperiodmillis called in Android Studio?
updatePeriodMillis – The widget’s update method is called when the specified time in one millisecond is reached. widgetCategory: home_screen or keyguard. Android Studio has an amazing interface for creating widgets.