ANDROID WIDGET DEBUG ANDROID STUDIO UPDATE
However, even if your widget does only need to update once per day, this isn’t ideal when testing your app. There are plenty of widgets that only update once every 24 hours, for example a widget that displays the weather forecast might only need to retrieve new information once per day. Open your project’s AppWidgetProviderInfo file ( res/xml/new_app_widget_info.xml) and you’ll see that it already defines a default update interval of 86400000 milliseconds (24 hours). You could even setup some A/B testing to check whether certain update frequencies are received more positively than others. Since how-frequent-is-too-frequent is one of those frustrating subjective questions where there’s no “right” answer, it can help to get a second opinion by arranging some user testing. To find a balance that works for your particular project, you’ll need to test your widget across a range of update frequencies and measure the impact each frequency has on battery life, while monitoring whether the widget’s content ever becomes noticeably out of date. Frequent updates are a greater drain on the device’s battery, but set these updates too far apart and your widget may wind up displaying significantly out of date information to the user. Even if you set your project's updatePeriodMillis to less than 30 minutes, you widget will still only update once every half an hour.ĭeciding how frequently your widget should update is never straightforward. When creating this kind of automatic update schedule, 1800000 milliseconds (30 minutes) is the smallest interval you can use. Since it’s the easiest method to implement, I’m going to start by updating our widget automatically, after a set period of time has elapsed.
This gives us the finished layout: Updating Your Widget Based on a Schedule
The looks different from your typical string, as it’s just a placeholder that’ll be replaced at runtime. Next, define the new string resources that we reference in our layout: Tap to update
Add the TextView that’ll display the time of the last update// Add a TextView that’ll display our ‘Last Update’ label// While we’re working on the new_app_widget.xml file, I’m also going to add the TextView that’ll eventually allow the user to trigger an update manually:
ANDROID WIDGET DEBUG ANDROID STUDIO DOWNLOAD
We’re picking up right where we left off, so if you don’t have a copy of the widget we created in the first post, then you can download it from GitHub. By the end of this series, we’ll have expanded our widget to retrieve and display new data automatically based on a schedule, and in response to user interaction.
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