yoonseopshin

import android.content.SharedPreferences

/**
 * A [android.content.SharedPreferences] wrapper that helps easy reading/writing values.
 *
 * @author Francesco Jo([email protected])
 * @since 22 - Mar - 2018
 */
class SecureSharedPreferences(private val sharedPref: SharedPreferences) {
    fun contains(key: String) = sharedPref.contains(key)

yoonseopshin

import android.os.Build
import android.security.KeyPairGeneratorSpec
import android.security.keystore.KeyGenParameterSpec
import android.security.keystore.KeyProperties
import android.util.Base64
import timber.log.Timber
import java.math.BigInteger
import java.security.GeneralSecurityException
import java.security.KeyPairGenerator
import java.security.KeyStore

yoonseopshin

Hexadecimal color code for transparency

How to set transparency with hex value ?

For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.

Download This sample on Google Play Store