Android Error

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.

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

When you update your android SDK version to a higher version, you may encounter the below errors when you edit exist java files in android studio. The SDK platform-tools version (26.0.1) is too old to check APIs compiled with API 27; please update To resolve this error, you just need to follow the below steps.

R.java is very important in android application development. It is used to identify all resource data such as id, layout, image, drawable resource, etc. R.java is generated by android studio automatically. But it is sometimes confused for developers to use it. This article will help you to resolve these problems about R.java you may encounter.