Android Tutorial

When you develop an android app and test the app on your mobile phone, you may want to mirror the android device screen to your working machine like Mac or PC. In that way, you can operate the android phone on the Mac or PC monitor instead of touch the mobile device screen repeatedly. This […]

This example will show you how to use various android.graphics.Canvas class’s methods to draw text, point, line, circle, rectangle, oval, arc, and self-defined shapes. 1. Android Graphics Canvas Draw Method Example. If you can not watch the above video, you can see it on the youtube URL https://youtu.be/HtR0yY0kCcI The above example demo video shows that

This example will show you how to change the android device screen orientation ( horizontal to vertical vice versa ) and how to avoid activity restart during the screen orientation change.

Pinch zoom ( in or out ) is an often-used gesture in android applications. It is very user-friendly and smooth to display something bigger or smaller to watch. This example will show you how to implement pinch zoom on an image in the android application.

In some cases, you may want to capture custom-defined gestures in your android application. And at the same time, you may also want to detect general gestures ( such as double-tap, long press, scroll, etc) on the special view component. This article will tell you how to combine custom-defined gestures and general gestures together in

When you create a new android project in android studio, you may encounter an error message like below. Error:Execution failed for task ‘:app:preDebugAndroidTestBuild’. > Conflict with dependency ‘com.android.support:support-annotations’ in project ‘:app’. Resolved versions for app (26.1.0) and test app (27.1.1) differ. See https://d.android.com/r/tools/test-apk-dependency-conflicts.html for details.

Android support drag and drop action since SDK version 11. You can drag any view component from the source container and drop it to another container ( view component ). This example will show you how to implement drag and drop action in android.

When you create the android project in android studio, there are a lot of activity templates you can choose which are provided by android studio. For android beginners, the basic activity and the empty activity always make them confused. So what is the difference between them, let me tell you now.

When I start an android virtual device ( AVD ) in my new machine ( which I just bought these days.), I meet an error message like this Qemu-System-X86_64.Exe Has Stopped Working. This error stopped my android virtual machine to start. After investigate for almost half a day, I finally find the reason why this

Google map is the best digital map in the world. So embed google Maps in the android applications is very user-friendly and can improve user experience. Google provides android APIs for android developers to integrate the google map service in their android application. This article will tell you how to do it step by step.