lifecycle android
onCreate called when activity is first created.
onStart called when activity is becoming visible to the user.
onResume called when activity will start interacting with the user.
onPause called when activity is not visible to the user.
onStop called when activity is no longer visible to the user.
onRestart called after your activity is stopped, prior to start.
onDestroy called before the activity is destroyed.lifecycle components android dependency
// ViewModel
implementation "androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version"
// LiveData
implementation "androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version"lifecycle dependency android
def lifecycle_version = "2.3.1"
def arch_version = "2.1.0"
// ViewModel
implementation("androidx.lifecycle:lifecycle-viewmodel-ktx:$lifecycle_version")
// LiveData
implementation("androidx.lifecycle:lifecycle-livedata-ktx:$lifecycle_version")
// Lifecycles only (without ViewModel or LiveData)
implementation("androidx.lifecycle:lifecycle-runtime-ktx:$lifecycle_version")
// Saved state module for ViewModel
implementation("androidx.lifecycle:lifecycle-viewmodel-savedstate:$lifecycle_version")
// Annotation processor
kapt("androidx.lifecycle:lifecycle-compiler:$lifecycle_version")
// alternately - if using Java8, use the following instead of lifecycle-compiler
implementation("androidx.lifecycle:lifecycle-common-java8:$lifecycle_version")
// optional - helpers for implementing LifecycleOwner in a Service
implementation("androidx.lifecycle:lifecycle-service:$lifecycle_version")
// optional - ProcessLifecycleOwner provides a lifecycle for the whole application process
implementation("androidx.lifecycle:lifecycle-process:$lifecycle_version")
// optional - ReactiveStreams support for LiveData
implementation("androidx.lifecycle:lifecycle-reactivestreams-ktx:$lifecycle_version")
// optional - Test helpers for LiveData
testImplementation("androidx.arch.core:core-testing:$arch_version")Copyright © 2021 Codeinu
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