Develop Reference

Gradle sync error when adding Material Spinner dependency

When trying to add the dependency for the latest version (2.0.0) of the Material Spinner, my gradle sync fails with the error:
Error:(33, 14) Failed to resolve: com.github.ganfra:material-spinner:2.0.0
This is my build.grade
apply plugin: 'com.android.application'
android {
compileSdkVersion 23
buildToolsVersion "26.0.1"
defaultConfig {
applicationId "com.myroommate.myroommate"
minSdkVersion 23
targetSdkVersion 23
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.android.support:appcompat-v7:23.4.0'
compile 'com.android.support:support-v4:23.4.0'
compile 'com.android.support:design:23.4.0'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
testCompile 'junit:junit:4.12'
compile 'com.android.support:cardview-v7:25.3.1'
compile 'com.android.volley:volley:1.0.0'
compile ('com.github.ganfra:material-spinner:2.0.0') {
exclude group: 'com.android.support', module: 'appcompat-v7'
}
}
But when I change the Material Spinner version to 1.1.1, the gradle sync is finishing without any errors.
compile ('com.github.ganfra:material-spinner:1.1.1') {
exclude group: 'com.android.support', module: 'appcompat-v7'
}
Even using 1.1.2 makes my gradle build fails. I would like to use the latest version of the Material Spinner so what am I doing wrong here?

the release has not been pushed to maven yet.
It'll be ok very soon.
check this

compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha7' not resolve

this code of my build.gradle(moudule app)
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.3"
defaultConfig {
applicationId "com.example.hn.myapplication"
minSdkVersion 14
targetSdkVersion 25
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.android.support.constraint:constraint-layout:1.0.2'
compile 'com.android.support:appcompat-v7:25.+'
compile 'com.android.support:recyclerview-v7:25.+'
compile 'com.android.support:support-v4:25.+'
compile 'com.android.support:design:25.+'
//compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha7'
compile 'com.android.support.constraint:constraint-layout:1.0.0'
testCompile 'junit:junit:4.12'
}
and this is my sdk tools.
I try compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha7'
and compile 'com.android.support.constraint:constraint-layout:1.0.0'
and compile 'com.android.support.constraint:constraint-layout:1.+'
but not working. and error is
Failed to resolve: com.android.support.constraint:constraint-layout:1
who I solve this problem?
When I use compile 'com.android.support.constraint:constraint-layout:1.0.0-alpha7
this error done: install artifact and sync project

go to file -> setting -> sdk manager -> sdk tools -> then install google repository

Libraries missing. "Install and Sync" not working

I opened my project and it shows me some errors, I'm starting in the world of Android now, so I don't know how to do this. I press over the install Repository and sync project but this doesn't do anything.
This is all the versions that I have in my project.
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "26.0.0"
defaultConfig {
applicationId "mx.com.dtss.carritocompras"
minSdkVersion 15
targetSdkVersion 25
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:3.0.0', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile files('libs/ksoap2-android-assembly-3.0.0-jar-with-dependencies.jar')
compile group: 'com.google.code.gson', name: 'gson', version: '2.3'
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.android.support:design:25.3.1'
compile 'com.android.support:cardview-v7:25.3.1'
compile 'com.squareup.picasso:picasso:2.5.2'
testCompile 'junit:junit:4.12'
}
And these are the errors
How can I fix it?

first option is to click on Install Repository and sync project,
if that dosent work then you need to add the repository from the dependencies manually, go to File > Project Structure > Dependencies
click on + > Library dependency
and search for the missing repository
enter image description here

Error:Failed to resolve: org.json:json:20160810

i just upgraded my android studio to 3.0 canery 1. now am having an issue upon syncing my project which was working fine on my previous version of android studio .
here is my file
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "com.******.app"
minSdkVersion 14
targetSdkVersion 25
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.android.support:appcompat-v7:25.2.0'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
compile 'com.afollestad:bridge:5.1.2'
compile 'com.vistrav:ask:2.4'
compile 'com.github.bumptech.glide:glide:3.7.0'
compile 'com.thefinestartist:finestwebview:1.2.7'
compile 'com.google.firebase:firebase-messaging:10.0.1'
compile 'com.google.android.gms:play-services-maps:10.0.1'
compile 'com.google.android.gms:play-services-places:10.0.1'
testCompile 'junit:junit:4.12'
}
apply plugin: 'com.google.gms.google-services'

exclude org.json its already available in the framework.
compile('com.afollestad:bridge:5.1.2') {
exclude group: 'org.json', module: 'json'
}

Your project having org.json:json:20160810 artifact(direct injection or indirect(like by provider of other artifact)) but not able to do find from local/remote repo.
And make sure you've your repository in your project
repositories {
mavenCentral()
jcenter({url "http://jcenter.bintray.com/"})
}
Hopefully you're connected to Internet so that it can find from remote repo:
You go File > Settings > Gradle Look at the "Offline work" inbox, if it's checked u uncheck and try to sync again.

can not resolve Firebase

i am trying to declare Firebase but it's giving error can not resolve Firebase.
i have added all the dependencies. when typing in android studio FirebaseDatabase etc are available but simple Firebase is not.
here are my dependencies
enter code here
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "com.doctor.lenovo.mvprecovery"
minSdkVersion 16
targetSdkVersion 25
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.android.support:appcompat-v7:25.1.0'
compile 'com.google.firebase:firebase-core:10.0.1'
compile 'com.google.firebase:firebase-database:10.0.1'
compile 'com.google.firebase:firebase-storage:10.0.1'
compile 'com.google.firebase:firebase-crash:10.0.1'
compile 'com.google.firebase:firebase-auth:10.0.1'
testCompile 'junit:junit:4.12'
}
apply plugin: 'com.google.gms.google-services'

Make sure you have the lastest version of Google Repository (You can update to a newer version in SDK Manager tab)