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import android.os.SystemClock;
import android.support.v4.util.LruCache;

import java.util.HashMap;
import java.util.Map;

/**
 * An Lru Cache that allows entries to expire after
 * a period of time. Items are evicted based on a combination
 * of time, and usage. Adding items past the {@code maxSize}

MossoIsai

Instalaciones recomendadas - Curso de Git y GitHub

1. VSCode - Visual Studio Code

2. Google Chrome

3. Git

Extensiones de VSCode

MossoIsai

package com.example.protodatastoretest

import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import android.util.Log
import androidx.lifecycle.ViewModelProvider
import kotlinx.android.synthetic.main.activity_main.*

class MainActivity : AppCompatActivity() {

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fun <T> LiveData<T>.observeOnce(lifecycleOwner: LifecycleOwner, observer: Observer<T>) {
    observe(lifecycleOwner, object : Observer<T> {
        override fun onChanged(t: T?) {
            observer.onChanged(t)
            removeObserver(this)
        }
    })
}
//Using
liveData.observeOnce(this, Observer<Password> {