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Failed to resolve: com.android.support:appcompat-v7:28.+ , Error: more than one library with package name 'android.support.graphics.drawable'

I'm new to Android Studio, I tried everything to solve this problem "Failed to resolve: com.android.support:appcompat-v7:28.+ "
I tried to clean project , invalidate cash/restart and removing .idea and still the same
I'm using android studio 2.2.1 for a learning reason , and I updated it to android studio 3 and there a multiple rendering problems so I returned back to version 2.2.1
I tried to add
maven {
url 'https://maven.google.com/'
name 'Google'
}
So,It stuck with another problem
"Error:Execution failed for task ':app:processDebugResources'.
> Error: more than one library with package name 'android.support.graphics.drawable'"
Error Photo
Finally I tried to change "appcompat-v7:28.+" to "appcompat-v7:27" and it' works but still tell me that i should use the same library to avoid mistakes
This is my Gradle code:
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
buildToolsVersion "28.0.1"
defaultConfig {
applicationId "com.example.aimlive.myapplication"
minSdkVersion 15
targetSdkVersion 28
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-v7:28.+'
testCompile 'junit:junit:4.12'
}

Replace 'com.android.support:appcompat-v7:28+' by 'com.android.support:appcompat-v7:28.0.0'
and add below dependencies
implementation 'com.android.support:support-v4:28.0.0'
implementation 'com.android.support:support-media-compat:28.0.0'
implementation 'com.android.support:animated-vector-drawable:28.0.0'
implementation 'com.android.support:customtabs:28.0.0'

try adding this to your code:
repositories {
jcenter()
maven { // <-- Add this
url 'https://maven.google.com/'
}
}
Update: Now you moved on to another error:
Error: more than one library with package name 'android.support.graphics.drawable ...
To fix this, you need to change compile to implementation in dependencies part.

if you are using
compileSdkVersion 28
add in your dependencies below code
implementation 'com.android.support:appcompat-v7:28.0.0-alpha'
this is the link

Try this one, hope it is working
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:$kotlin_version"
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support:support-v4:28.0.0'
implementation 'com.android.support:design:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'com.android.support.test:runner:1.0.2'
androidTestImplementation 'com.android.support.test.espresso:espresso-core:3.0.2'
dependencies
classpath 'com.android.tools.build:gradle:3.1.4'
android
compileSdkVersion 28
minSdkVersion 21
targetSdkVersion 28

Try this code, hope it will be working. Thanks
build.gradle (Project)
dependencies {
classpath 'com.android.tools.build:gradle:3.1.4'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
build.gradle (app)
android {
compileSdkVersion 28
buildToolsVersion '28.0.3'
defaultConfig {
applicationId "YOUR_PACKAGE_NAME"
minSdkVersion 15
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
renderscriptTargetApi 19
renderscriptSupportModeEnabled true
// Enabling multidex support.
multiDexEnabled true
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
lintOptions {
abortOnError false
}
}
dependencies check for implementation
dependencies {
implementation fileTree(include: ['*.jar'], dir: 'libs')
}

I found that 'com.android.support:animated-vector-drawable' and 'com.android.support:support-vector-drawable' have a same package name in support library version 28.0.0. Normally this does not make the problem.
But if you have the following line in gradle.properties
android.uniquePackageNames = true
you will see the error
more than one library with package name 'android.support.graphics.drawable'"
If you should use the uniquePackageNames option, use androidx instead of support library 28.0.0.

In case someone like me stuck for hours and find out the you have to check the maven dependency "com.android.support:appcompat-v7:28.0.0". remove the "+" sign as gradle does not like it for unpredictable versions. so i had to check the maven repository and found that i was compiling with 29 and 29 does not exist. please check below link
[""][1]
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.example.amirkhan.birthday"
minSdkVersion 15
targetSdkVersion 28
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 'com.android.support:appcompat-v7:28.0.0'
}
2)) Maven should be included.
allprojects {
repositories {
jcenter()
maven {
url "https://maven.google.com"
}
google()
}
}
Wallah the problem is solved
[1]: https://mvnrepository.com/artifact/com.android.support/appcompat-v7/28.0.0

Can't import: android.support.v7.widget.RecyclerView in Android Studio

I'm following my teachers tutorial and therefore writing exactly the same code that he has in his example. So I just created a new class to learn RecyclerView but I can't import RecyclerView On mouse-over, it just says "Cannot resolve symbol RecyclerView". I use Android Studio 2.3.3. Am I missing something obvious?
import android.support.v7.widget.RecyclerView;
public class CustomAdapter extends RecyclerView.Adapter<ComposedAdapter.Holder> {
//stuff
}
Gradle:
apply plugin: 'com.android.application'android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "sofialarsson.customrecyclerview"
minSdkVersion 19
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-v7:25.3.1'
compile 'com.android.support.constraint:constraint-layout:1.0.2'
testCompile 'junit:junit:4.12'
}

You need to add dependencies in build.gradle
Use this update gradle file
apply plugin: 'com.android.application'android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "sofialarsson.customrecyclerview"
minSdkVersion 19
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-v7:25.0.0"
compile "com.android.support:recyclerview-v7:25.0.0"
testCompile 'junit:junit:4.12'
}

Add below dependency in build.gradle;
compile 'com.android.support:design:xx.x.x'

If you are using androidx artifacts, add the following to your app level build.gradle
dependencies {
implementation 'androidx.recyclerview:recyclerview:1.1.0'
implementation 'androidx.appcompat:appcompat:1.1.0'
}

Might be useful, so Let me drop this for those who might want to migrate to androidx. In your build.gradle (Module app) add the dependency like this, instead of:
compile 'com.android.support:recyclerview-v7:23.3.0'
to
implementation 'androidx.recyclerview:recyclerview:1.1.0'
Then import like this, instead of:
import android.support.v7.widget.RecyclerView;
use:
import androidx.recyclerview.widget.RecyclerView;
Sync and enjoy!

Just add these two dependencies and you are good to go.
compile 'com.android.support:design:25.3.1'
compile 'com.android.support:recyclerview-v7:25.3.1'
Make sure always always use same versions everywhere like you use here 25.3.1.
Also update your buildToolsVersion="25.0.0" .
Thanks!!!

Just add compile 'com.android.support:recyclerview-v7:25.3.1' dependencies in build.gradle app file like below code
dependencies {
compile 'com.android.support:appcompat-v7:25.3.1'
compile 'com.android.support:recyclerview-v7:25.3.1'
}

Add below dependency in build.gradle
implementation 'androidx.recyclerview:recyclerview:1.1.0-beta02'
Link Reference for latest releases

to give you an up-to-date and comprehensive answer, you have two choices.
Pre Android 9.0 (pre API 28), you have to use the old Support Library:
dependencies {
compile "com.android.support:appcompat-v7:25.0.0"
compile "com.android.support:recyclerview-v7:25.0.0"
}
For these dependencies, you have to use the version number of your Build Tools Version.
In Android 9.0 (API 28+) and above, you have to use the new Support Library (Noted here https://developer.android.com/topic/libraries/support-library/features#v7):
dependencies {
implementation "androidx.appcompat:appcompat:1.1.0"
implementation "androidx.recyclerview:recyclerview:1.1.0"
}
For these dependencies, you have to use the version numbers from the following pages:
https://developer.android.com/jetpack/androidx/releases/appcompat
https://developer.android.com/jetpack/androidx/releases/recyclerview

Add this class in the main_activity.xml file:
class="androidx.recyclerview.widget.RecyclerView"/>
Refer to https://developer.android.com/reference/androidx/recyclerview/widget/RecyclerView
for more info...

Android databinding tests fails in Module NoClassDefFoundError

I could not able to run the local unit tests in Module which is using android Data binding library.
First let me tell about the project structure how its configured.
project
| app
-MainLauncherActivity
| myLibrary
-CommonModuleActivity
I have created a new project, after that have added a new module "myLibrary".
the main "app" depends on "myLibrary" module. I have added one activity in "myLibrary" it supports databinding. I called module specific activity from main "app" activity on button click in it. it just works, could able to run the app.
But, Getting the below errors when i add a test case for the Module Activity.
AndroidStudio : 2.3
Gradle build tools version 2.3.0 -->
Error:java.lang.NoClassDefFoundError: android/databinding/DataBinderMapper
Gradle build tools version 2.2.3 -->
Error:java.lang.NoClassDefFoundError: android/databinding/ViewDataBinding
PROJECT IDE SCREENSHOT
project root gradle file:
// Top-level build file where you can add configuration options common to all sub-projects/modules.
buildscript {
repositories {
jcenter()
}
dependencies {
//classpath 'com.android.tools.build:gradle:2.3.0'
classpath 'com.android.tools.build:gradle:2.2.3'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
task clean(type: Delete) {
delete rootProject.buildDir
}
below is "app" build.gradle:
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
applicationId "com.example.bindingtest"
minSdkVersion 21
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'
}
}
dataBinding {
enabled true
}
}
dependencies {
compile 'com.android.support:appcompat-v7:25.1.0'
//compile 'com.android.support.constraint:constraint-layout:1.0.0-beta4'
testCompile 'junit:junit:4.12'
compile project(':mylibrary')
}
below myLibrary build.gradle:
apply plugin: 'com.android.library'
android {
compileSdkVersion 25
buildToolsVersion "25.0.2"
defaultConfig {
minSdkVersion 21
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'
}
}
dataBinding {
enabled true
}
}
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'
testCompile 'junit:junit:4.12'
testCompile "org.mockito:mockito-core:1.10.19"
}
LibraryActivity:
public class MyLibraryActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
ActivityMyLibraryBinding binding = DataBindingUtil.setContentView(this, R.layout.activity_my_library);
//set data to binding
}
}
Corresponding test case can be found in the attached screenshot.
Could some one tell me what am i doing wrong here to get it tested.
APP IS WORKING FINE, ONLY UNIT-TESTS ARE FAILING!!!

I know it's too late to answer that question , But I say to friends who may face this problem.
Any time You used to dataBinding and at unit test faced with NoClassDefFoundError
first add this lines in build.gradle(Module)
testOptions {
unitTests{
isIncludeAndroidResources=true
}
}
then add this library to the dependencies at build.gradle(Module)
kaptTest("androidx.databinding:databinding-compiler:7.0.4")

I think this is a known issue which you can review here. I've been tracking this issue since February. Doesn't seem to be fixed yet.

added android.enableExperimentalFeatureDatabinding=true in gradle.properties . According to the name of this property, I think it could work for sometimes but not always, you can try.

Could not resolve com.google.gms:google-services:3.0.0

I read many posts on this topic, but no one helped me.
I'm using Android Studio and following this guide
This is the project gradle:
buildscript {
repositories {
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.2.3'
classpath 'com.google.gms:google-services:3.0.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
}
}
this is the app gradle:
apply plugin: 'com.android.application'
android {
compileSdkVersion 25
buildToolsVersion "25.0.1"
defaultConfig {
applicationId "com.xyv.appname"
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:2.2.2', {
exclude group: 'com.android.support', module: 'support-annotations'
})
compile 'com.android.support:appcompat-v7:25.0.1'
compile 'com.android.support:design:25.0.1'
testCompile 'junit:junit:4.12'
compile 'com.google.firebase:firebase-core:10.0.1'
}
apply plugin: 'com.google.gms.google-services'
Here you can see where I added google-services.json inside my app:
These are my SDK tools:
Does anybody understand what's my error?
Thank you in advance

You may need to add
compile 'com.google.android.gms:play-services:9.6.1'
in your app build.gradle also. ref: Upgrade to Google Play Services:9.0.0 Error Failed to resolve: com.google.android.gms:play-services-measurement:9.0.0
If you recently bumped the version to 3.0.0 you should doublecheck that you have installed the correct version on your machine in the Android SDK manager.

Open the stand alone SDK Manager, in the Extras section the you will find "Google Play Services" update it .

I resolve my issue by updating android studio to 2.3 beta 2
I did just update an android studio and all is ruining well

.get() and .put() methods migrated from Eclipse to Android Studio

I am quite a .NET guy, developing in Xamarin. However, I got my hands on a piece of Java code for Android I would like to implement in C#. The problem is that the project was developed in Eclipse, and then ported to Android Studio and now cannot be compiled.
I got through all the issues with Gradle, but now I am stuck with some generated annotations and .put() and .get() methods, that cannot be referenced. There are many things similar to the following:
A normal interface like MySharedPreferences has its generated sealed (final) class counterpart MySharedPreferences_. This is then used in the code:
import com.someproject.MySharedPreferences_;
...
public class SomeAndroidClass {
public MySharedPreferences_ prefs;
public SomeMethod() {
String x = prefs.someValue().get;
...
prefs.someValue().put("abc");
}
}
Now, this cannot be compiled, because the MySharedPreferences_class is not generated by Android studio. I tried to get rid of the underscore and use the MySharedPreferences interface instead. But then I had problem referencing the .get() and .put() methods. Please, can somebody help me how to deal with this problem?
EDIT
Adding the build.gradle file:
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath 'com.android.tools.build:gradle:2.0.0'
classpath 'com.neenbedankt.gradle.plugins:android-apt:1.8'
}
}
repositories {
maven { url "http://dl.bintray.com/populov/maven" }
mavenCentral()
mavenLocal()
}
apply plugin: 'com.android.application'
apply plugin: 'android-apt'
def AAVersion = '4.0.0'
android {
compileSdkVersion 23
buildToolsVersion "23.0.3"
defaultConfig {
applicationId "com.testproject.smartconfig"
minSdkVersion 15
targetSdkVersion 23
versionCode 1
versionName "1.0"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
apt "org.androidannotations:androidannotations:$AAVersion"
compile "org.androidannotations:androidannotations-api:$AAVersion"
compile fileTree(dir: 'libs', include: ['*.jar'])
testCompile 'junit:junit:4.12'
compile 'com.android.support:appcompat-v7:23.3.0'
compile 'fr.avianey.com.viewpagerindicator:library:2.4.1.1#aar'
}
apt {
arguments {
androidManifestFile variant.outputs[0]?.processResources?.manifestFile
}
}

MySharedPreferences_ is most likely class generated by Android Annotations library - androidannotations.org, check if Your build.gradle contains needed config: https://github.com/excilys/androidannotations/wiki/Building-Project-Gradle
Then reimport Your project using gradle.