Missing the android.os.handler object from Android Studio

Question

I'm attempting to create a Handler thread in my application however Android Studio marks my text as red and will only attempt to import the java.util version of a handler and not the Android SDK version. When attempting to import manually I'm able to find the HandlerThread just fine but the normal handler import seems to be missing.

Any ideas why?

Burtburta

those are part of the same jar. Probably you have misspelled the import – Niven

Android Studio will auto complete the import for you. So if I was to type android.os. it would then complete the import for me. In the list it does not show "Handler" as an available object. – Burtburta

Answer 1

I had to add import android.os.*; before I could get the android.os.Handler object working in my class.

Burtburta

Answer 2

Just import android.os.Handler, no need to import everything in android.os

Ascites

Answer 3

open : Settings -> Editor -> General -> Auto Import。

Exclude from Import

Wisdom

Answer 4

import android.os.*;

solved the problem.

Clubman

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Answer 5

Make sure that your Android SDK is added properly to Android studio. To do this go to File -> Project Structure and check the SDKs item under Platform Settings. Also make sure that you have selected a Project SDK under the Project item.

See the IntellJ documentation for more information.

Delphinus

Answer 6

It works because Android Studio and InteliJ usually import import android.os.Handler; instead of import android.os.Handler;

When you import the android version of Handler make sure you remove the Java version because the Java version is always compiled first over the Android version.

Maudiemaudlin