I wrote a sample code and received these errors.
error: cannot find symbol class Android J Unit 4.
and
error: package android x test ext j unit runners does not exist
I installed the latest version of android studio and after running each code I received these errors.
What do the errors mean?
Code:
package com.example.hello;
public class JavaBasics {
public static void main(String args[]){
System.out.println("Hello World");
}
}
build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 29
buildToolsVersion "29.0.2"
defaultConfig {
applicationId "com.example.hello"
minSdkVersion 14
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.0.2'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.2.0'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}
I solve it..
i must use
#RunWith(AndroidJUnit4.class)
in . java and
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
in app (build.grade)
Related
I want to add a library called material to my projects but it gives me the mentioned error in the title when I try to sync it. Android Studio 4.0.1.
build.gradle(app module)
apply plugin: 'com.android.application'
android {
compileSdkVersion 30
buildToolsVersion "30.0.1"
defaultConfig {
applicationId "com.example.app"
minSdkVersion 14
targetSdkVersion 30
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: "libs", include: ["*.jar"])
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
/*implemention for material shown below*/
implementation 'com.google.android.material:material:1.3.0-alpha02'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
}
when I import opencv with android studio it not done.
Android studio version 3.6.2
opencv version
when i import opencv module
build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 29
buildToolsVersion "29.0.3"
defaultConfig {
applicationId "com.example.thu"
minSdkVersion 14
targetSdkVersion 29
versionCode 1
versionName "1.0"
testInstrumentationRunner "androidx.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-
optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.13'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
implementation project(path: ':java')
}
Error :
ERROR: Unable to resolve dependency for ':app#debug/compileClasspath': Could
not resolve project :java.
Show Details
Affected Modules: app
How can I solve this?
Why this error comes how can i solve this error?
what mistake i did in this?
I followed this youtube tutorial.
My another question.
I am trying to update from couchbase.lite 1.4.0 to 2.0.0, but when I update and sync my build.gradle file I seem keep getting 'cannot resolve symbol' errors for my imports (AndroidContext, Document, and Database). After looking at the dcoumentation, it appears that all I have change change is:
implementation 'com.couchbase.lite:couchbase-lite-android:1.4.0'
to
implementation 'com.couchbase.lite:couchbase-lite-android:2.0.0'
unless I missed something else...
Here is my complete build.grade file.
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
defaultConfig {
applicationId "com.my.app"
minSdkVersion 19
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support:design:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
implementation 'com.couchbase.lite:couchbase-lite-android:2.0.0'
implementation 'com.couchbase.lite:couchbase-lite-android-forestdb:1.4.1'
}
I have created a very simple project about android and c++ in android studio.
the struct of project(module) is like:
enter image description here
And build.gradle is:
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
defaultConfig {
applicationId "com.shuyi.study.myapplication"
minSdkVersion 15
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"a
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
externalNativeBuild {
cmake {
path 'CMakeLists.txt'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
implementation 'com.android.support:design:26.1.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
}
when I start Gradle sync, it logged the informations:
enter image description here
I can not find the reason of this error.
Pleas give me some ides.Thanks!!!
I am attempting to build an android app that uses the wordpress-java Lib to obtain the data from my site.
build.gradle:
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
defaultConfig {
applicationId "com.techedelicminds.techedelicminds"
minSdkVersion 19
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:26.1.0'
implementation 'com.android.support.constraint:constraint-layout:1.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.1'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.1'
compile 'net.bican:jwordpress:0.7.0'
}
As you can see I have the correct compile code in my build.gradle yet the Error "Failed to resolve: redstone.xmlrpc:xmlrpc:1.1.1" continues to show up, and despite my best efforts I can not find anyone else on the internet that has run into this issue, any help would be appreciated.