Cannot resolve symbol nullable

Question

Getting cannot resolve symbol nullable error for my program. @androidx.annotations.Nullable - nullable has redline under it.

package com.singularity.birdjumper;

import android.app.Activity;
import android.os.Bundle;

public class GameActivity extends Activity
{
    @Override
    protected void onCreate(@androidx.annotation.Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
    }
}

Add an import for nullable, i.e, `import android.support.annotation.Nullable` — Kavita Patil, Mar 18 '19 at 18:59

Bala Ganesh · Answer 1 · 2020-03-01T06:37:27.230

9

just add this import statement

import android.support.annotation.Nullable;

For androidx, the import statement should be:

import androidx.annotation.Nullable;

edited Mar 01 '20 at 06:37

answered Mar 18 '19 at 16:12

Bala Ganesh

1,025
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score 5 · Answer 2 · edited Jul 06 '19 at 07:47

5

Are you using the AndroidX library? It would be worth adding them into the app gradle file,

//set the version to latest version
implementation 'androidx.appcompat:appcompat:1.1.0-rc01'

There is also a great answer over here for more information on AndroidX and migrating your projects over to it.

Android Studio adds both @androidx.annotation and @android.support.annotation problem

edited Jul 06 '19 at 07:47

Ananth

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answered Mar 18 '19 at 18:56

justamarkprime

101
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11

score 0 · Answer 3 · answered Nov 29 '19 at 02:29

0

i hava the same problem, sync project with gradle files or update gradle plug

answered Nov 29 '19 at 02:29

Mr Zhou

1

Cannot resolve symbol nullable

3 Answers3