AlarmManager is a bridge between application and Android system alarm service. It can send a broadcast to your app (which can be completely terminated by user) at a scheduled time and your app can then perform any task accordingly. With the help from PendingIntent and Intent, a bundle of information…

ViewPager2 is introduced in this year 2019 Google I/O and is a replacement of the old ViewPager, which was created in 2011. It includes some new features to enhance UI and coding experience, including: Right-to-left layout support Vertical orientation (Scroll vertically) modifiable Fragment collections

TabLayout is a common widget working with ViewPager and ViewPager2. User can tap on each tap to go to a specific page in ViewPager directly. The most common example is the Google Play Store app.

Dot presentation to TabLayout is common in many apps. There are only 4 steps to configure the dots! Click to read more. 😁

NFC stands for “Near Field Communication”. Two electronic devices can transmit data through NFC when they are distanced fewer than 4 cm apart. NFC can be used for electronic payment. It was invented many years ago but it has just been introduced by Apple to iPhone series since the launch…

Reposted from the BuTTer Tech publication; I am the original writer. Testing can ensure the quality of the app delivered to the end-user. Different parties share different responsibilities for testing. On the app vendor side, software developers, QA engineers and project managers have to work together to clearly define the…

Use Google Map SDK to display a route, Room to save the user’s data, Step counter to get the step count — Running is a healthy habit for all people. It is a great benefit for users to review their running routes and step counts on a map. Android provides a lot of tools for achieving these functions. In this tutorial, you’ll build this kind of tracking app with the following tools: …

AVFoundation framework provides lots of functionalities for developers to handle the audio data. — IOS app can access the user’s microphone and encode the audio input. For example, WhatsApp records the user’s voice to send a voice message to others. Apple provides a great framework — AVFoundation framework to help apps easily request the microphone permission, encode the audio input and playback the recorded…

New Presentation Controller with Two Detents — Apple releases a lot of new updates to iOS and Swift programming language in the WWDC 2021. One of the eye-catching UI enhancements is the UISheetPresentationController. It provides a brand new way for presenting an UIViewController . It can be displayed in either half-screen or full-screen mode. You can also…