How to import class in Android Studio

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I am trying to implement simple notifications in my android app. I am reffering this developer guide

But getting this error message :

Incompatible types.

Error Message screenshot

For the following code snippet :

NotificationCompat.Builder mBuilder = new NotificationCompat.Builder(this)
                        .setContentTitle("My notification")
                        .setContentText("Hello World!");

Here are my imports :

import android.content.Intent;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;

I think the correct NotificationCompat class is imported. I am using Android Studio v2.1.2 for development. Please help me with this error message. I am new to android programming and java.

v7/appcompat/src/android/support/v7/app/ , public class NotificationCompat extends NotificationCompat {. /** return addStyleGetContentViewJellybean(builder, b);. } private static� I'm new in coding. I used this import for but I received a red error: cannot resolve symbol v7. I did invalidate caches restart too but that didn't work. If I run this code without that line, my app runs on Android 5.1.1 but doesn't work on galaxy j6 What's that line for?





NotificationCompat.Builder, NotificationCompat by import NotificationCompat$ Builder at java.lang.Class.classForName(Native Method) at� Builder class for NotificationCompat objects. Allows easier control over all the flags, as well as help constructing the typical notification layouts. On platform versions that don't offer expanded notifications, methods that depend on expanded notifications have no effect. For example, action buttons won't appear on platforms prior to Android 4.1.

Latest working solution 2020

If you have updated to Androidx then replace




ClassNotFoundException: NotificationCompat support v7 � Issue , How to import android. support. NotificationCompat. Builder class in Android Studio I am trying to implement simple notifications in my android app. NotificationCompat.Builder mBuilder = ( new NotificationCompat.Builder(this).setSmallIcon(R.drawable.ic_launcher).setContentTitle("My notification").setContentText("Hello World!"); If not, swap your imports to use the v4 version.

How to import android. support. NotificationCompat. Builder , Now when you write or paste a class name in your java source code, android studio will automatically import the class with it’s package. If you select Ask in Insert imports on paste drop down list. Then android studio will ask you whether import the class or not, you can press Alt+Enter to import it. 1.2 For MacOS$ java code , I created two modules in single android project, named it x and y. Module x has a class Egg (Package: com.example.x) Module y has a class Foo (Package: com.example.y) Now I want to import class Foo in the class Egg, for which I wrote the statement mentioned below in class Egg. Import com.example.y.Foo; Now, Foo is not recognized by android

I'm new to this too. In Android Studio I right clicked on the directory with MainActivity in it and selected New Class and put the class I wanted to use there. Then I just created an instance in the main activity using the "new" statement with my class creator. I did not use any "import" statements. I have tried to attach a screenshot.

  • Your documentation link for v7 is broken - it just goes to an index which has an entry for the v4 NotificationCompat, and also an entry that looks like it should be for the v7 NotificationCompat but actually just links back to the same index...
  • Going from support lib 26 to 27 this caused a bit headache. This solution nails it
  • As far as I can tell there is no import; where have you found that?
  • @Sobvan Exactly, I've been searching this package name at and there is no such thing