Android Vitals. Optimizing for Battery Life. System tracing. Build and test apps for accessibility. Advanced topics. Protecting against security threats with SafetyNet. Build for Billions. Build for Enterprise. App feedback. Device management. Dedicated devices. Android versions. Read about the Android 12 widgets improvements. Android Developers. Figure 1: Example of a music widget This document describes how to publish a widget using a widget provider.
Widget components To create a widget, you need the following basic components: AppWidgetProviderInfo object Describes the metadata for a widget, such as the widget's layout, update frequency, and the AppWidgetProvider class.
Defined in the XML in this document. AppWidgetProvider class Defines the basic methods that allow you to programmatically interface with the widget. Through it, you will receive broadcasts when the widget is updated, enabled, disabled, or deleted. AppWidgetProvider is declared in the manifest and then implemented , as described in this document.
View layout Defines the initial layout for the widget. Defined in XML , as described in this document. Figure 2: App widget processing flow In addition to the required basic components, if your widget needs user configuration you should implement the App Widget configuration activity. Starting in Android 12 API level 31 , you can choose to provide a default configuration and allow users to reconfigure the widget later.
See Use the widget's default configuration and Enable users to reconfigure placed widgets for more details. In Android 11 API level 30 or lower, this activity is launched every time the user adds the widget to their home screen. Attributes and description targetCellWidth and targetCellHeight Android 12 , minWidth and minHeight Starting in Android 12, the targetCellWidth and targetCellHeight attributes specify the default size of the widget in terms of grid cells.
The minWidth and minHeight attributes specify the default size of the widget in dp. If the values for a widget's minimum width or height don't match the dimensions of the cells, then the values are rounded up to the nearest cell size. If supported, the targetCellWidth and targetCellHeight attributes take precedence over the minWidth and minHeight attributes. These values should specify the size under which the widget would be illegible or otherwise unusable.
Using these attributes allows the user to resize the widget to a size that may be smaller than the default widget size. The minResizeWidth attribute is ignored if it is greater than minWidth or if horizontal resizing isn't enabled see resizeMode. Likewise, the minResizeHeight attribute is ignored if it is greater than minHeight or if vertical resizing isn't enabled. Introduced in Android 4. The maxResizeWidth attribute is ignored if it is smaller than minWidth or if horizontal resizing isn't enabled see resizeMode.
Likewise, the maxResizeHeight attribute is ignored if it is greater than minHeight or if vertical resizing isn't enabled. Introduced in Android You can use this attribute to make homescreen widgets resizeable—horizontally, vertically, or on both axes. Values for the resizeMode attribute include horizontal , vertical , and none. To declare a widget as resizeable horizontally and vertically, use horizontal vertical.
Introduced in Android 3. Example To illustrate how the attributes in the preceding table affect widget sizing, assume the following specifications: A grid cell is 30dp wide and 50dp tall. The following attribute specification is provided. Android 11 and lower: We will use the minWidth and minHeight attributes to compute the default size of the widget.
Attributes and description updatePeriodMillis Defines how often the widget framework should request an update from the AppWidgetProvider by calling the onUpdate callback method.
The actual update is not guaranteed to occur exactly on time with this value and we suggest updating as infrequently as possible—perhaps no more than once an hour to conserve the battery. For the full list of considerations to pick an appropriate update period, see Optimizations for updating widget content. See Enable users to configure widgets.
Starting in Android 12, your app can skip the initial configuration. See Use the widget's default configuration for details. Ideally, the layout XML specified as this attribute should be the same layout XML as the actual widget with realistic default values.
In Android 11 or lower, the previewImage attribute specifies a preview of what the widget will look like after it's configured, which the user sees when selecting the app widget. If not supplied, the user instead sees your application's launcher icon. For more details, see Backward-compatibility with scalable widget previews.
Only Android versions lower than 5. For Android 5. This bypasses launching the configuration activity after a user adds the widget. The user can still reconfigure the widget afterwards.
Use the AppWidgetProvider class to handle widget broadcasts The AppWidgetProvider class handles widget broadcasts and updates the widget in response to widget lifecycle events. Use android.
When these broadcast events occur, the following AppWidgetProvider methods are called: onUpdate This is called to update the widget at intervals defined by the updatePeriodMillis attribute in the AppWidgetProviderInfo. See the table describing additional widget attributes in this document. This method is also called when the user adds the widget, so it should perform the essential setup, such as define event handlers for View objects or start a job to load data to be displayed in the widget.
It is the responsibility of the configuration activity to perform the first update when configuration is complete. See Creating a widget configuration activity. The most important callback is onUpdate. See Handle events with the onUpdate class in this document for more information.
Starting in Android 12, the targetCellWidth and targetCellHeight attributes specify the default size of the widget in terms of grid cells.
Specifies the widget's absolute minimum size. Specifies the widget's recommended maximum size. Specifies the rules by which a widget can be resized. Defines how often the widget framework should request an update from the AppWidgetProvider by calling the onUpdate callback method.
Every home screen needs a great-looking clock widget. Chronus gives you half a dozen of them. It offers a choice of digital and analog clocks, with added agenda view, weather, stocks, or a news feed. It even has a widget that's compatible with Google Fit, putting your daily steps onto your home screen. You can customize every part of the look and feel of your Chronus widgets. And by downloading some third-party extensions from the Play Store, you can make it even more useful.
Once you get your head around how to customize Chronus widgets, they become some of the coolest widgets for Android. Download: Chronus Free, in-app purchases available. You'll find lots of excellent note-taking apps with widgets in the Play Store. But you can't really beat Google Keep. It offers two widgets. One is a simple shortcuts bar that lets you create a basic note, list, voice memo, handwritten note, or photo note.
The other allows you to pin notes to your home screen. It's ideal for shopping lists or anything else you need to remember while you're out and about. Download: Google Keep Free. While Google Keep has some great note widgets, Samsung users also have access to one of the best Samsung widgets out there, Samsung Notes.
There are three Notes widget options available, including a sleek and stylish toolbar, miniature note shortcuts, and a larger full view option. Download: Samsung Notes Free. Month is a beautiful collection of calendar widgets, with over 80 themes to fit in seamlessly with whatever wallpaper, icon set, or launcher you use.
There's something for everyone. You can choose a classy, transparent, full-page Month view or go for a more functional Agenda view suitable for busy professionals. It's fully compatible with Google Calendar as well. Download: Month Free, in-app purchases available. TickTick is an awesome task management app that comes with nine widgets guaranteed to make you a whole lot more productive.
Visual learners will appreciate the layout of this widget, which makes it easy to check out your plans for the day. The pie chart format breaks down your tasks and appointments in colorful slices based on the times you have them scheduled. If you've ever tried to adjust the volume on your phone and accidentally turned off the ringer, you will appreciate this widget.
With four configuration options, you can have quick access to as many or as few volume settings as you wish. For example, you can choose different volumes for your apps, alarms, and ringtones for your Android phone. Must upgrade to the premium versions to get rid of ads, receive extra features, and identify unlimited songs. You've had a tune stuck in your head for three days and cannot remember the title or even the lyrics. You try humming it for a friend or whistling it to a coworker, but nobody can help.
This widget can give you the answers you seek. Play, sing, or hum a song, and SoundHound will do its best to recognize it and provide listening options on sites such as Spotify and YouTube. Actively scan device characteristics for identification. Use precise geolocation data. Select personalised content. Create a personalised content profile.
Measure ad performance. Select basic ads. Create a personalised ads profile. Select personalised ads. Apply market research to generate audience insights. Measure content performance. Develop and improve products. List of Partners vendors. It looks and feels pretty good, although power users may need something a little more powerful. Calendar Widget: Agenda is much like the other Calendar Widget app, but with more options. You can create widgets specifically for your agenda as well as any other upcoming events you might have.
Both widgets are free to use with a limited number of themes. You can buy more as in-app purchases. It includes predominately clock and weather widgets with some news widgets and some other stuff as well. Most of the widgets are fairly customizable and can work with most home screens. There is also Wear OS support if you need that. The pro version adds some little extras like Google Fit support and support for Reddit in the news widgets.
Google Keep Notes is a simple and effective note taking application. With it, you can make text notes, list notes, and even voice notes. It also gives you the option to share notes with others for collaboration. There are a bunch of extra little hidden features throughout the app as well. It also comes with a simple set of Android widgets that gives you the ability to create notes quickly.
They range in size from simple to more complex depending on your needs. You can also access notes on Google Drive using any web browser. IFTTT is one of the most powerful apps out there. You use it to create automated tasks that your phone completes on its own. One of its many features is a button widget that activates a command when pressed. The widget itself is rather simple. KWGT is one of a few make-your-own Android widgets. That makes it a bit easier than one would think.
You can have it do a variety of things and make it look almost however you want. It also includes support for Zooper, Tasker, and other apps.
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