Develop Reference

How to implement design library to android app?

I wont to implement this design library to my project > https://developer.android.com/topic/libraries/support-library/packages.html#design (com.android.support:design:28.0.0). But when I'm syncing I have got error: Could not get unknown property 'com' for object of type org.gradle.api.internal.artifacts.dsl.dependencies.DefaultDependencyHandler. Please help. Thanks :)
android {
compileSdkVersion 29
buildToolsVersion "29.0.3"
defaultConfig {
applicationId "com.example.pyramid"
minSdkVersion 15
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:4.12'
androidTestImplementation 'androidx.test.ext:junit:1.1.1'
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
implementation 'com.google.android.material:material:1.1.0'
implementation 'com.android.support.design:28.0.0'

Ok I think it is solved. I just copied all libraries from second project with Bottom Navigation Activity to my first project. com.google.android.material.bottomnavigation.BottomNavigationView It's all :)

More than one file was found with OS independent path 'README.md'

I'm trying to use selendroid in my app as webscraper, but I get this error "More than one file was found with OS independent path 'README.md'" .
Any thoughts on how to fix it?
build.gradle
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "ru.startandroid.testselenium2"
minSdkVersion 15
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0'
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'
implementation files('D:\\chromedriver\\selendroid-client-0.17.0.jar')
implementation files('D:\\chromedriver\\selendroid-standalone-0.17.0-with-dependencies.jar')
}

Add this to your android closure:
packagingOptions {
exclude 'README.md'
}

How to correctly change MinSDKVersion from 15 to 16 for firebase

I was originally using minSDKVersion 15, but now have to change to 16 because I need to implement firebase. Using the previous version of firebase is not an option.
Simply changing the minSDKVersion to 16 in the build.gradle(Module:app) gives the following error:
Manifest merger failed : Attribute application#appComponentFactory value=(android.support.v4.app.CoreComponentFactory) from [com.android.support:support-compat:28.0.0] AndroidManifest.xml:22:18-91
is also present at [androidx.core:core:1.0.0] AndroidManifest.xml:22:18-86 value=(androidx.core.app.CoreComponentFactory).
Suggestion: add 'tools:replace="android:appComponentFactory"' to <application> element at AndroidManifest.xml:8:5-40:19 to override.
I did try the suggestion it provides to add 'tools:replace="android:appComponentFactory"' to the element in AndroidManifest.xml but that produces even more errors.
I changed my build.gradle(Module:app) file from this:
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.comapny.app"
minSdkVersion 15
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.android.support:design:28.0.0'
implementation 'com.android.support:support-v4:28.0.0'
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'
implementation 'com.android.volley:volley:1.1.0'
}
to this:
apply plugin: 'com.android.application'
android {
compileSdkVersion 28
defaultConfig {
applicationId "com.dataletix.gr8"
minSdkVersion 16
targetSdkVersion 28
versionCode 1
versionName "1.0"
testInstrumentationRunner "android.support.test.runner.AndroidJUnitRunner"
}
buildTypes {
release {
minifyEnabled false
proguardFiles getDefaultProguardFile('proguard-android-optimize.txt'), 'proguard-rules.pro'
}
}
}
dependencies {
implementation fileTree(dir: 'libs', include: ['*.jar'])
implementation 'com.android.support:appcompat-v7:28.0.0'
implementation 'com.android.support.constraint:constraint-layout:1.1.3'
implementation 'com.android.support:design:28.0.0'
implementation 'com.android.support:support-v4:28.0.0'
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'
implementation 'com.android.volley:volley:1.1.0'
implementation 'com.google.firebase:firebase-core:17.0.0'
}
apply plugin: 'com.google.gms.google-services'
Any Help will be greatly appreciated. Thank you.

Try to downgrade the firebase dependency from 17.0.0 to 16.0.7
This is the version that I'm currently using and it works.
Be very careful about firebase versions. There are some dependencies that will crash your project if you set the wrong version.
Here is a list of some stable dependencies that I use:
implementation 'com.google.firebase:firebase-core:16.0.7'
implementation 'com.google.firebase:firebase-messaging:17.4.0'
implementation 'com.google.firebase:firebase-auth:16.1.0'
implementation 'com.google.firebase:firebase-firestore:18.1.0'
implementation 'com.google.firebase:firebase-functions:16.3.0'
implementation 'com.google.firebase:firebase-perf:16.2.3'
implementation 'com.google.firebase:firebase-config:16.3.0'
implementation 'com.google.firebase:firebase-database:16.1.0'

Execution failed for task ':app:preDebugAndriodTestBuild'

My question is about an error in Android Studio.
Every time when i try to run a java project in Android Studio i get the below error and my program doesn't not work :
This is my gradle configuration:
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
defaultConfig {
applicationId "com.example.christianmastracco.jsondemo"
minSdkVersion 22
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:1.1.3'
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'
}
How i can solve it? Thanks

Change your compileSdkVersion and targetSdkVersion to 27 and this:
implementation 'com.android.support:appcompat-v7:26.1.0'
to this
implementation 'com.android.support:appcompat-v7:27.1.0'

Update your compileSdkVersion and targetSdkVersion, both, into version 27 and implementation version 27.1.1 as shown in error message.
I can't comment at Ernest Zamelczyk answer (reputation 50) but I think the correct answer is 27.1.1, not 27.1.0 as he told.

Android conflict version gradle

im having a problem on my build.gradle which is a version conflict with firebase-auth and the com.google.android.gms.
Error message printscreen
Gradle source
apply plugin: 'com.android.application'
android {
compileSdkVersion 26
defaultConfig {
applicationId "pt.tomasdealmeida.sotreta"
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'
}
}
}
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'
implementation 'com.android.support:support-v4:26.1.0'
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'
implementation 'com.android.support:cardview-v7:26.1.0'
compile 'com.google.firebase:firebase-auth:11.8.0'
compile 'com.google.android.gms:play-services-ads:11.6.2'
}
apply plugin: 'com.google.gms.google-services'

try this
change this
compile 'com.google.android.gms:play-services-ads:11.6.2'
to
compile 'com.google.android.gms:play-services-ads:11.8.0'
and please cek this Release Note
December 18, 2017 - Google Play services 11.8.0 release