Develop Reference

Dex Error while building the project

I am getting the following error when I try to build my project. This error occurs when I was trying to add JavaMail api in my project.
Error:Execution failed for task ':app:transformDexArchiveWithExternalLibsDexMergerForDebug'.
> com.android.builder.dexing.DexArchiveMergerException: Unable to merge dex
This is my gradle file:
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
defaultConfig {
applicationId "com.persi.eatery"
minSdkVersion 21
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'
}
}
productFlavors {
}
packagingOptions {
exclude 'META-INF/mailcap.default'
exclude 'META-INF/mimetypes.default'
}
defaultConfig {
multiDexEnabled true
}
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
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'
implementation 'com.android.support:design:26.1.0'
implementation 'com.google.firebase:firebase-database:11.8.0'
implementation 'com.google.firebase:firebase-auth:11.8.0'
implementation 'com.sun.mail:android-mail:1.6.1'
implementation 'com.sun.mail:android-activation:1.6.1'
implementation project(':library')
}
apply plugin: 'com.google.gms.google-services'
My library gradle:
apply plugin: 'com.android.library'
android {
compileSdkVersion 23
buildToolsVersion '26.0.2'
defaultConfig {
minSdkVersion 8
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
Project gradle file
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
google()
jcenter()
maven {
url "https://maven.java.net/content/groups/public/"
}
}
dependencies {
classpath 'com.android.tools.build:gradle:3.0.1'
classpath 'com.google.gms:google-services:3.1.1'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
google()
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
P.S I have already tried Clean project followed by rebuild project as suggested in other answers but its still not working.Thanks in advance
Unable to merge dex

You have a dependencies conflict. Try to see your dependencies via command ./gradlew app:dependencies (Details here ). And you will see the next situation:
As you can see android-mail depends on android-activation. I think you don't need to use the line implementation 'com.sun.mail:android-activation:1.6.1'
P.S. For debugging builds you can use the next flag "--stacktrace". Then you can see more information about your issue.

Cannot build project

I trying to assemble my project, but I only get an error:
Error:Execution failed for task ':basetools:processDebugAndroidTestResources'.
> No slave process to process jobs, aborting
I didn't change anything in my gradle files but abruptly got this error.
I already tried invalidate cahces and restart, rebuild
What should I do to fix it?
This is my project's build.gradle
buildscript {
ext.kotlin_version = '1.1.51'
apply from: 'scripts/dependencies.gradle'
apply from: 'scripts/testDependencies.gradle'
repositories {
google()
mavenLocal()
jcenter()
maven { url 'https://maven.fabric.io/public' }
maven {
url "https://maven.google.com"
}
maven { url 'https://jitpack.io' }
}
dependencies {
classpath plugin.android
classpath plugin.fabric
classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
classpath 'com.google.gms:google-services:3.1.0'
}
}
allprojects {
repositories {
google()
mavenLocal()
jcenter()
maven { url 'https://maven.fabric.io/public' }
maven {
url "https://maven.google.com"
}
maven { url 'https://jitpack.io' }
}
gradle.projectsEvaluated {
tasks.withType(JavaCompile) {
options.compilerArgs << "-Xmaxerrs" << "1000" // or whatever number you want
}
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
This is a build.project of app
apply plugin: 'com.android.application'
apply plugin: 'kotlin-kapt'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
apply plugin: 'io.fabric'
def mainKeystore = file("../main.keystore")
//def debugKeystore = file("../debug.keystore")
android {
compileSdkVersion 26
buildToolsVersion "26.0.2"
defaultConfig {
applicationId "com.ilyinp.valutetracker"
minSdkVersion 19
targetSdkVersion 26
versionCode 2
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
multiDexEnabled true
vectorDrawables.useSupportLibrary = true
}
signingConfigs {
release {
storeFile mainKeystore
keyAlias "valutetracker"
}
}
buildTypes {
release {
minifyEnabled true
shrinkResources true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
signingConfig signingConfigs.release
}
}
dataBinding {
enabled = true
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
incremental = false
}
}
kapt {
generateStubs = true
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.google.firebase:firebase-core:11.6.0'
testImplementation 'junit:junit:4.12'
androidTestImplementation('com.android.support.test.espresso:espresso-core:3.0.1', {
exclude group: 'com.android.support', module: 'support-annotations'
})
implementation "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
compile project(base.baseTools)
compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
kapt "com.android.databinding:compiler:3.0.0"
compile dep.dagger.lib
kapt dep.dagger.apt
compile dep.moxy.lib
compile dep.moxy.appCompat
kapt dep.moxy.apt
compile(dep.crashlytics) {
transitive = true
}
compile 'com.google.android.gms:play-services-ads:11.6.0'
}
apply plugin: 'com.google.gms.google-services'
And finally, build.gradle of module basetools
apply plugin: 'com.android.library'
apply plugin: 'kotlin-kapt'
apply plugin: 'kotlin-android'
apply plugin: 'kotlin-android-extensions'
android {
compileSdkVersion 26
buildToolsVersion '26.0.2'
defaultConfig {
minSdkVersion 15
targetSdkVersion 26
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
dataBinding {
enabled = true
}
compileOptions {
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
}
kapt {
generateStubs = true
}
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
implementation 'com.android.support:appcompat-v7:26.0.2'
testImplementation 'junit:junit:4.12'
androidTestImplementation('com.android.support.test.espresso:espresso-core:3.0.1', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile dep.support.multiDex
// compile dep.support.appCompat
compile dep.support.cardView
compile dep.support.recyclerView
compile dep.support.design
compile dep.support.constraintLayout
compile dep.glide.lib
compile dep.glide.transformations
compile dep.rxjava.lib
compile dep.rxjava.android
compile dep.rxjava.permissions
compile dep.rxjava.binding
compile dep.rxjava.bindingCompat
compile dep.retrofit.lib
compile dep.retrofit.converter.gson
compile dep.retrofit.adapter.rxjava
compile dep.okhttp.lib
compile dep.okhttp.interceptor.logging
compile dep.dagger.lib
kapt dep.dagger.apt
compile dep.timber
compile dep.moxy.lib
compile dep.moxy.appCompat
kapt dep.moxy.apt
compile dep.materialDialogs
compile dep.parceler.lib
kapt dep.parceler.apt
compile dep.cicerone
compile(dep.fastadapter) {
transitive = true
}
compile(dep.fastadapterCommons)
compile(dep.fastadapterExtensions)
compile(dep.materialize) {
transitive = true
}
compile(dep.crashlytics) {
transitive = true
}
compile "org.jetbrains.kotlin:kotlin-stdlib-jre7:$kotlin_version"
kapt "com.android.databinding:compiler:3.0.0"
}
repositories {
mavenCentral()
}

Go to Android Studio, click "File" and click "Invalidate Caches / Restart...". This will work.

change
minifyEnabled true
to
minifyEnabled false
if above changes does not work then try this as well
shrinkResources true
to
shrinkResources false

Restarting Android Studio wasn't enough to resolve this error for me: I also had to kill an aapt2 process which had been left behind.

Same issue. Invalidate caches and restart done the job for me.

You can delete build folder in project and modules. After Invalidate Caches and Restart , it work for me!
You can try it

'Clean Project'、'rebuild project' doesn't work.I solved this problem by invalidate and restart

Delete build folder manually (project's build and modules' build)
Delete old .impl file
Restart Android Studio

I was going through some RnD and applied above nothing worked, rather that made my project to crash completely and re do.
I was not shutting down and restart the system everyday.
When I got the next time I simply didn't do anything but restarted the system. It worked fine!!..
Guys , keep in mind : Invalidate Caches and Restart will make you loose complete history of code changes.
shrinkResources to false /
minifyEnabled to false will cost you few kbs of apk size

com.android.jack.ir.ast.JReturnStatement at "Unknown source info"

I'm trying to import a Jgrapht library in my app, but every time i try to build APK, android studio shows me:
Error:Execution failed for task ':app:transformClassesWithPreJackPackagedLibrariesForDebug'.
com.android.sched.scheduler.RunnerProcessException: Error during 'TypeLegalizer' runner on 'private final synthetic int org.jgrapht.alg.vertexcover.-$Lambda$25.$m$0(java.lang.Object arg0)': Unexpected error during visit: com.android.jack.ir.ast.JReturnStatement at "Unknown source info"
What is the problem and how i can fix it? Please help me!
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion '25.0.0'
lintOptions {
checkReleaseBuilds false
// Or, if you prefer, you can continue to check for errors in release builds,
// but continue the build even when errors are found:
abortOnError false
}
defaultConfig {
applicationId "it.univpm.gruppoids.iotforemergencyandnavigation"
minSdkVersion 16
targetSdkVersion 25
versionCode 1
versionName "1.0"
jackOptions {
enabled true
}
}
compileOptions {
incremental true
sourceCompatibility JavaVersion.VERSION_1_8
targetCompatibility JavaVersion.VERSION_1_8
}
repositories {
maven {
url "https://mint.splunk.com/gradle/"
}
}
packagingOptions {
exclude 'META-INF/services/org.apache.sis.storage.DataStoreProvider'
exclude 'META-INF/ASL2.0'
exclude 'META-INF/LICENSE'
exclude 'META-INF/NOTICE'
exclude 'META-INF/NOTICE.txt'
exclude 'META-INF/LICENSE.txt'
exclude 'META-INF/MANIFEST.MF'
}
/*buildTypes {
release {
minifyEnabled true
proguardFiles getDefaultProguardFile('proguard-android.txt'),
'proguard-rules.pro'
}
}*/
}
dependencies {
compile fileTree(include: ['*.jar'], dir: 'libs')
testCompile 'junit:junit:4.12'
compile 'com.android.support:design:25.0.0'
compile 'com.android.support:appcompat-v7:25.0.0'
compile 'com.android.support:percent:25.0.0'
compile 'com.android.support:support-v4:25.0.0'
compile 'com.journeyapps:zxing-android-embedded:3.2.0#aar'
compile 'com.google.zxing:core:3.2.1'
compile files('lib/jgrapht-ext-1.0.0-uber.jar')
compile files('lib/jgrapht-ext-1.0.0.jar')
compile files('lib/jgrapht-demo-1.0.0.jar')
compile files('lib/jgraph-5.13.0.0.jar')
compile files('lib/antlr4-runtime-4.5.3.jar')
compile files('lib/jgrapht-core-1.0.0.jar')
}
And the other gradle:
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
mavenCentral()
/*maven {
url "https://plugins.gradle.org/m2/"
}*/
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.2.2'
classpath 'me.tatarka:gradle-retrolambda:3.3.0'
}
}
allprojects {
repositories {
jcenter()
mavenCentral()
}
}
apply plugin: 'me.tatarka.retrolambda'
task clean(type: Delete) {
delete rootProject.buildDir
}

The easiest way I can think of is to use maven, then simply add the dependencies to your project. That'll save you a lot of hassel in setting up JGraphT by yourself.
you can find how to use maven with android studio here: How to import Maven dependency in Android Studio/IntelliJ?
While JGraphT's dependencies are here under the "Maven Releases" section:
http://jgrapht.org/

Gradle plugins (findbugs, pmd, jdepend, checkstyle) not working

I have the follow app bulild.gradle for my project. When I run the command gradle check no output is reported in the app/build/ folder. I basically used the same code for a previous project and it seemed to work just fine.
apply plugin: 'com.android.application'
apply plugin: "findbugs"
apply plugin: 'pmd'
apply plugin: "jdepend"
apply plugin: 'checkstyle'
findbugs {
ignoreFailures = false
effort = "max"
reportLevel = "low"
}
pmd {
ignoreFailures = true
}
jdepend{
ignoreFailures = true
}
tasks.withType(FindBugs) {
reports {
xml.enabled = false
html.enabled = true
}
}
tasks.withType(Checkstyle) {
reports {
xml.enabled false
html.enabled true
html.stylesheet resources.text.fromFile('config/xsl/checkstyle-custom.xsl')
}
}
android {
compileSdkVersion 24
buildToolsVersion "24.0.0"
defaultConfig {
applicationId "dat255.refugeeevent"
minSdkVersion 15
targetSdkVersion 24
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
androidTestCompile('com.android.support.test.espresso:espresso-core:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.google.android.gms:play-services:9.6.1'
compile 'com.android.support:appcompat-v7:24.2.1'
compile 'com.android.support:design:24.2.1'
compile 'com.android.support:support-v4:24.2.1'
compile 'com.google.code.gson:gson:2.7'
testCompile 'junit:junit:4.12'
compile 'com.facebook.android:facebook-android-sdk:[4,5)'
compile 'com.github.bumptech.glide:glide:3.5.2'
compile files ('libs/microsoft-translator-java-api-0.6.2-jar-with-dependencies.jar')
}

Check out gradle fury's quality plugin, works on android and non android projects https://github.com/gradle-fury/gradle-fury. We use it has something to force reports for the site plugin. It's largely based off of work of others with lots of tweaks to make it work correctly for both android and non android projects.
apply it
allprojects {
apply from: "https://raw.githubusercontent.com/gradle-fury/gradle-fury/master/gradle/quality.gradle"
}
and then you'll need the contents from here: https://github.com/gradle-fury/gradle-fury/tree/master/config cloned into your repo. Just the config folder, the rest of the stuff isn't needed.
finally, either call any gradle tasks that requires check. So any one of the following should do the trick
gradlew build
gradlew check
gradlew install (if you're running the maven-support stuff from fury)

Add below configuration to you gradle.build file. Basically it does not find android repository and related details in your configuration.
buildscript {
repositories {
mavenCentral()
mavenLocal()
maven { url 'https://github.com/steffenschaefer/gwt-gradle-plugin/raw/maven-repo/' }
}
dependencies {
classpath 'com.android.tools.build:gradle:2.0.0'
}
}
allprojects {
repositories {
jcenter()
}
}

Unable To add dependencies in android studio

How to add Library in android studio using build.gradle file
Here is my build.gradle(Module) file
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "23.0.2"
defaultConfig {
applicationId "com.example.akshay.popupdemo"
minSdkVersion 19
targetSdkVersion 23
versionCode 7
versionName "1.0.7"
multiDexEnabled true
}
packagingOptions {
exclude 'META-INF/LGPL2.1'
exclude 'META-INF/LICENSE'
exclude 'META-INF/NOTICE'
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
dexOptions {
javaMaxHeapSize "4g"
}
}
dependencies {
compile fileTree(dir: 'libs', include: ['*.jar'])
compile 'com.android.support:appcompat-v7:23.0.0'
compile 'com.google.android.gms:play-services:8.1.0'
compile 'com.android.support:multidex:1.0.1'
compile 'com.scottyab:secure-preferences-lib:0.1.3'
compile 'com.google.code.gson:gson:2.3'
compile 'com.esri.arcgis.android:arcgis-android:10.2.7'
}
and my build.gradle(project) file
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:1.5.0'
}
}
allprojects {
repositories {
jcenter()
maven {
url 'http://dl.bintray.com/esri/arcgis'
}
}
}
I Got The Following Error
D:\Yogesh_Kadam_Projects\Android-Projects\Current Projects\PopUpDemo\app\build.gradle
Error:Error:line (36)Failed to resolve: com.scottyab:secure-preferences-lib:0.1.3
Error:Error:line (37)Failed to resolve: com.google.code.gson:gson:2.3
Error:Error:line (38)Failed to resolve: com.esri.arcgis.android:arcgis-android:10.2.7
I know how to add using library Folder and then adding dependencies using project structure dialog box.
How to add library using build.gradle file ?
What Setting should i made into android studio to download library by its own?
Please Explain.
Log IMAGE

#yogesh
try to add dependencies using Module Setting -> Dependencies -> Library Dependency
paste dependency path on search area
for ex. com.google.code.gson:gson and this will search & rectify the dependency with proper version