Issue in resolving nonnull and notnull symbol in looper.java

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'
}

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.

Issue in resolving nonnull and notnull symbol in looper.java, Add following in your dependencies compile 'com.android.support:support-​annotations:+'. Also, verify this. Go to File -> Setting -> search for "nullable" and verify  Stack Overflow Public questions and answers; Teams Private questions and answers for your team; Enterprise Private self-hosted questions and answers for your enterprise; Talent Hire technical talent

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

android, i'm developing android app please me solve dependency error. package android​.os; import android.support.annotation.nonnull; import  [ Natty] android Issue in resolving nonnull and notnull symbol in looper.java By: userAbhi 1.5; [ Natty ] android How to wrap text in textview in Android By: user8470132 1.0 ;

Add following in your dependencies

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

firebase_auth: ^0.8.0+1 crashes on Android · Issue #27156 · flutter , BitKnitting opened this issue on Jan 27, 2019 · 25 comments symbol public void onAuthStateChanged(@NonNull FirebaseAuth firebaseAuth) { ^ symbol: -​0.8.0+1/android/src/main/java/io/flutter/plugins/firebaseauth/FirebaseAuthPlugin.​java uses unchecked or unsafe operations. You can visit my answer to solve it. pratik r. Apparently, this user prefers to keep an air of mystery about them. 0. 10 Issue in resolving nonnull and notnull symbol in looper.java Feb 4 '16. Badges

Try:

import android.support.annotation.NonNull;

Also add gradle build as other guys already mentioned:

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

User Rohit5k2, Issue in resolving nonnull and notnull symbol in looper.java · stackoverflow.com · 15 · Android text-size programmatically too big · stackoverflow.com. @Nullable and @NotNull @Nullable and @NotNull annotations let you check nullability of a variable, parameter, or return value. They help you control contracts throughout method hierarchies, and if IntelliJ IDEA spots that the contract is being violated, it will report the detected problem, and will point to the code where NullPointerException may occur.

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!

@Nullable and @NotNull - Help, @Nullable and @NotNull annotations let you check nullability of a variable, parameter, or return value. that potentially can be null, IntelliJ IDEA will highlight the problem on the fly. Gif Go to Editor | Inspections | Java | Probable bugs. editor does not find library containing @NotNull annotation in red and says it can't resolve the symbol. Same for @NotNull. an issue in our

Java NullPointerException, Java NullPointerException is an unchecked exception and extends RuntimeException. This operator results to the value on the left hand side if not null else right hand Call String.equals(String) on 'Safe' Non-Null String Love computers, programming and solving everyday problems. Looper.loop(Looper.​java:136) The @NonNull annotation can be used to indicate that a given parameter can not be null. If a local variable is known to be null (for example because some earlier code checked whether it was null), and you pass that as a parameter to a method where that parameter is marked as @NonNull, the IDE will warn you that you have a potential crash.

I also encounter a similar problem which is “Symbol elf magic could not be resolved”, and the elf header has already been included. I think that the problem may be caused by library cache,for restarting software can solve the problem.

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Comments
  • did you resolved the issue? none of the provided issue below worked in my case
  • A modern take on this question:stackoverflow.com/questions/50470474/…
  • I get an error: Avoid using + in version numbers; can lead to unpredictable and unrepeatable builds. Removed the :+.
  • @LuisA.Florit: Rather than using "+", you can use specific version.