Issue in resolving nonnull and notnull symbol in looper.java

Question

I'm developing an android app please help me to solve dependency error.

package android.os;
import android.support.annotation.NonNull;
import android.support.annotation.Nullable;

I've add following dependencies:

dependencies {

    compile group: 'com.google.code.findbugs', name: 'jsr305', version: '3.0.0'
    compile 'com.android.support:multidex:1.0.1'
    compile fileTree(include: ['*.jar'], dir: 'libs')
    testCompile 'junit:junit:4.12'
    compile 'com.android.support:appcompat-v7:23.1.1'
    compile 'com.android.support:support-v4:23.1.1'
    compile 'com.android.support:design:23.1.1'
    compile 'com.parse:parse-android:1.12.0'
    compile fileTree(include: '*.jar', dir: 'libs')
    compile 'com.squareup.picasso:picasso:2.5.2'
    compile 'com.android.support:support-annotations:23.1.1'
}

did you resolved the issue? none of the provided issue below worked in my case — Kostanos, Feb 22 '19 at 18:31
A modern take on this question:https://stackoverflow.com/questions/50470474/cannot-resolve-symbol-nonnull-after-android-studio-update — Nitay, Oct 12 '19 at 19:16

Rohit5k2 · Answer 1 · 2016-02-04T12:46:44.040

16

Add following in your dependencies

compile 'com.android.support:support-annotations:+'

Also, verify this

Go to File -> Setting -> search for "nullable" and verify these settings.

edited Feb 04 '16 at 12:46

answered Feb 04 '16 at 12:35

Rohit5k2

17,948
8
45
57

I get an error: `Avoid using + in version numbers; can lead to unpredictable and unrepeatable builds`. Removed the `:+`. – Luis A. Florit Jun 07 '18 at 14:55
@LuisA.Florit: Rather than using "+", you can use specific version. – Rohit5k2 Jun 08 '18 at 02:18

score 7 · Answer 2 · answered Jun 18 '18 at 11:45

Since Google announced at IO17 gradle:3.0, the compile configuration is now deprecated and should be replaced by implementation or api

So prefer

dependencies {
    ...
    implementation 'com.android.support:support-annotations:27.1.1'
    ...
}

or greater version

score 5 · Answer 3 · answered Feb 04 '16 at 12:35

5

Add following in your dependencies

dependencies {
    compile 'com.android.support:support-annotations:+'
}

answered Feb 04 '16 at 12:35

Kanaiya Katarmal

5,974
4
30
56

score 2 · Answer 4 · edited Jul 28 '19 at 05:10

2

Try:

import android.support.annotation.NonNull;

Also add gradle build as other guys already mentioned:

dependencies {
    compile 'com.android.support:support-annotations:+'
}

edited Jul 28 '19 at 05:10

Ishaan Javali

1,711
3
13
23

answered Sep 12 '16 at 06:08

dqshll

121
1
5

userAbhi · Answer 5 · 2019-07-12T08:35:45.330

1

As of android api 29 ('targetSdkVersion' 29) com.android.support has been moved to 'androidx' library. In your Build.gradle file(app level), dependencies block use...

dependencies{ ...

implementation 'androidx.annotation:annotation:1.1.0' }

And in your .java files use import as follows: import androidx.annotation.NonNull; ...

Again build your project!

edited Jul 12 '19 at 08:35

answered Jul 12 '19 at 08:29

userAbhi

695
6
10

Issue in resolving nonnull and notnull symbol in looper.java

5 Answers5

Linked