initial implementation of rewriting the app in kotlin

app/src/main/kotlin/com/simplemobiletools/flashlight/activities/SettingsActivity.kt

@@ -0,0 +1,54 @@
+package com.simplemobiletools.flashlight.activities
+
+import android.os.Bundle
+import android.support.v4.app.TaskStackBuilder
+import android.support.v7.widget.SwitchCompat
+import butterknife.BindView
+import butterknife.ButterKnife
+import butterknife.OnClick
+import com.simplemobiletools.flashlight.R
+import com.simplemobiletools.flashlight.helpers.Config
+
+class SettingsActivity : SimpleActivity() {
+    @BindView(R.id.settings_bright_display) internal var mBrightDisplaySwitch: SwitchCompat? = null
+    @BindView(R.id.settings_stroboscope) internal var mStroboscopeSwitch: SwitchCompat? = null
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_settings)
+        mConfig = Config.newInstance(applicationContext)
+        ButterKnife.bind(this)
+
+        setupBrightDisplay()
+        setupStroboscope()
+    }
+
+    private fun setupBrightDisplay() {
+        mBrightDisplaySwitch!!.isChecked = mConfig!!.brightDisplay
+    }
+
+    private fun setupStroboscope() {
+        mStroboscopeSwitch!!.isChecked = mConfig!!.stroboscope
+    }
+
+    @OnClick(R.id.settings_bright_display_holder)
+    fun handleBrightDisplay() {
+        mBrightDisplaySwitch!!.isChecked = !mBrightDisplaySwitch!!.isChecked
+        mConfig!!.brightDisplay = mBrightDisplaySwitch!!.isChecked
+    }
+
+    @OnClick(R.id.settings_stroboscope_holder)
+    fun handleStroboscope() {
+        mStroboscopeSwitch!!.isChecked = !mStroboscopeSwitch!!.isChecked
+        mConfig!!.stroboscope = mStroboscopeSwitch!!.isChecked
+    }
+
+    private fun restartActivity() {
+        TaskStackBuilder.create(applicationContext).addNextIntentWithParentStack(intent).startActivities()
+    }
+
+    companion object {
+
+        private var mConfig: Config? = null
+    }
+}