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StorageFeatureImpl.kt
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StorageFeatureImpl.kt
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/*
* Copyright 2019 Google LLC
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package com.google.android.samples.storage
import android.content.Context
import android.preference.PreferenceManager
import com.google.android.samples.dynamiccodeloading.Logger
import com.google.android.samples.dynamiccodeloading.StorageFeature
const val PREF_COUNTER = "COUNTER"
class StorageFeatureImpl(context: Context, private val logger: Logger) : StorageFeature {
private val sharedPrefs = PreferenceManager.getDefaultSharedPreferences(context)
override fun saveCounter(counter: Int) {
sharedPrefs.edit().putInt(PREF_COUNTER, counter).apply()
logger.log("Saved $counter to storage")
}
override fun loadCounter(): Int {
return sharedPrefs.getInt(PREF_COUNTER, 0).also {
logger.log("Loaded $it from storage")
}
}
/**
* The provider singleton. It is accessed from the base app ViewModel through reflection.
*/
companion object Provider : StorageFeature.Provider {
override fun get(dependencies: StorageFeature.Dependencies): StorageFeature {
return StorageFeatureImpl(dependencies.getContext(), dependencies.getLogger())
}
}
}