krupalshah

package com.experiments.preferencehelper

import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import android.util.Log
import com.experiments.preferencehelper.PreferenceHelper.get
import com.experiments.preferencehelper.PreferenceHelper.set

class MainActivity : AppCompatActivity() {

krupalshah

        val prefs = defaultPrefs(this)
        prefs[Consts.SharedPrefs.KEY] = "any_type_of_value" //setter
        val value: String? = prefs[Consts.SharedPrefs.KEY] //getter
        val anotherValue: Int? = prefs[Consts.SharedPrefs.KEY, 10] //getter with default value

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object PreferenceHelper {

    fun defaultPrefs(context: Context): SharedPreferences
            = PreferenceManager.getDefaultSharedPreferences(context)

    fun customPrefs(context: Context, name: String): SharedPreferences
            = context.getSharedPreferences(name, Context.MODE_PRIVATE)

    inline fun SharedPreferences.edit(operation: (SharedPreferences.Editor) -> Unit) {
        val editor = this.edit()

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class MainActivity : BaseActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        val prefs = PreferenceHelper.defaultPrefs(this)
        
        //put value in prefs
        prefs.setValue(Consts.SharedPrefs.KEY,"any_type_of_value")
        //get value from prefs
        val value:String? = prefs.getValue(Consts.SharedPrefs.KEY)

krupalshah

object PreferenceHelper {

    fun defaultPrefs(context: Context): SharedPreferences
            = PreferenceManager.getDefaultSharedPreferences(context)

    fun customPrefs(context: Context, name: String): SharedPreferences
            = context.getSharedPreferences(name, Context.MODE_PRIVATE)

    inline fun SharedPreferences.edit(operation: (SharedPreferences.Editor) -> Unit) {
        val editor = this.edit()

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     inline fun <reified T : Any> SharedPreferences.get(key: String, defaultValue: T? = null): T? {
        return when (T::class) {
            String::class -> getString(key, defaultValue as? String) as T?
            Int::class -> getInt(key, defaultValue as? Int ?: -1) as T?
            Boolean::class -> getBoolean(key, defaultValue as? Boolean ?: false) as T?
            Float::class -> getFloat(key, defaultValue as? Float ?: -1f) as T?
            Long::class -> getLong(key, defaultValue as? Long ?: -1) as T?
            else -> throw UnsupportedOperationException("Not yet implemented")
        }

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    inline fun SharedPreferences.edit(operation: (SharedPreferences.Editor) -> Unit) {
        val editor = this.edit()
        operation(editor)
        editor.apply()
    }

     fun SharedPreferences.setValue(key: String, value: Any?) {
        when (value) {
            is String? -> edit({ it.putString(key, value) })
            is Int -> edit({ it.putInt(key, value) })

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    inline fun SharedPreferences.edit(operation: (SharedPreferences.Editor) -> Unit) {
        val editor = this.edit()
        operation(editor)
        editor.apply()
    }

krupalshah

import android.content.Context;
import android.content.SharedPreferences;
import android.preference.PreferenceManager;
import android.text.TextUtils;

public class PreferenceHelper {

    private PreferenceHelper() {
    }

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    public static <T> void setValue(Context context, String key, T value) {
        if (value instanceof String) {
            edit(context, (editor) -> editor.putString(key, (String) value));
        } else if (value instanceof Boolean) {
            edit(context, (editor) -> editor.putBoolean(key, (Boolean) value));
        } else if (value instanceof Integer) {
            edit(context, (editor) ->  editor.putInt(key, (Integer) value));
        } else if (value instanceof Float) {
            edit(context, (editor) ->  editor.putFloat(key, (Float) value));
        } else {