System requirement:Android Studio requirement 3.5 or above
At the end of "Project -> Gradle Scripts -> gradle.properties(Project Properties)" add these lines: android.useAndroidX=true
android.enableJetifier=true
At the end of "Project -> Gradle Scripts -> build.gradle(Project:)" add these lines:...
buildscript {
repositories {
google()
jcenter()
}
dependencies {
classpath 'com.android.tools.build:gradle:3.5.0'
// NOTE: Do not place your application dependencies here; they belong
// in the individual module build.gradle files
}
}
allprojects {
repositories {
jcenter()
google()
}
}
Change "Project -> Gradle Scripts -> build.gradle(Module:)" these lines: androidTestImplementation
'com.android.support.test.espresso:espresso-core:3.0.2' ->
androidx.test.espresso:espresso-core:3.2.0
implementation 'com.android.support:appcompat-v7:28.0.0' -> androidx.appcompat:appcompat:1.1.0
implementation 'com.android.support.constraint:constraint-layout:1.1.3' -> androidx.constraintlayout:constraintlayout:1.1.3
androidTestImplementation 'com.android.support.test:runner:1.0.2' -> androidx.test:runner:1.2.0
implementation 'com.google.android.gms:play-services-ads:17.2.1' -> com.google.android.gms:play-services-ads:18.2.0
For Example:...
implementation fileTree(dir: 'libs', include: ['*.jar'])
androidTestImplementation 'androidx.test.espresso:espresso-core:3.2.0'
implementation 'androidx.appcompat:appcompat:1.1.0'
implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
testImplementation 'junit:junit:4.12'
androidTestImplementation 'androidx.test:runner:1.2.0'
implementation 'com.google.android.gms:play-services-ads:18.2.0'
In Java code, change import android.support.v7.app.AppCompatActivity;
to import androidx.appcompat.app.AppCompatActivity;
In activity xml, change android.support.v7.widget.Toolbar
to androidx.appcompat.widget.Toolbar
References: