Dialog Activity for Android (SDK 22) in Kotlin 1.0.2

activity_new_item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:orientation="vertical"
    android:paddingBottom="@dimen/activity_vertical_margin"
    android:paddingLeft="@dimen/activity_horizontal_margin"
    android:paddingRight="@dimen/activity_horizontal_margin"
    android:paddingTop="@dimen/activity_vertical_margin"
    tools:context="org.anyspirit.mycustom.NewItemActivity">

    <EditText
        android:id="@+id/new_item_label"
        android:labelFor="@+id/new_item_label"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:inputType="text"
        android:singleLine="true" />

    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:orientation="horizontal">

        <ImageButton
            android:id="@+id/new_item_submit"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:backgroundTint="@color/colorAccent"
            android:contentDescription="@string/add"
            android:src="@android:drawable/ic_menu_add" />

        <ImageButton
            android:id="@+id/new_item_cancel"
            android:layout_width="0dp"
            android:layout_height="wrap_content"
            android:layout_weight="1"
            android:backgroundTint="@color/colorAccentDark"
            android:contentDescription="@string/back"
            android:src="@android:drawable/ic_menu_close_clear_cancel" />
    </LinearLayout>

</LinearLayout>

AndroidManifest.xml

...
        <activity
            android:name=".NewItemActivity"
            android:label="@string/new_item"
            android:theme="@style/DialogTheme" />
...

NewItemActivity.kt

import android.content.Intent
import android.os.Bundle
import android.support.v7.app.AppCompatActivity
import android.view.MotionEvent
import android.widget.EditText

class NewItemActivity : AppCompatActivity() {

    companion object {
        val ITEM_NAME = "new_item_activity.item_name"
    }

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_new_item)

        findViewById(R.id.new_item_cancel).setOnTouchListener {
            view, motionEvent ->
            setResult(RESULT_CANCELED)
            finish()
            true
        }
        findViewById(R.id.new_item_submit).setOnTouchListener {
            view, motionEvent ->
            setResult(RESULT_OK, getResultData())
            finish()
            true
        }
    }

    private fun getResultData(): Intent {
        val text = findViewById(R.id.new_item_label).let {
            it as EditText
            it.text.toString()
        }
        return Intent().putExtra(ITEM_NAME, text)
    }

    // As an alternative to 'setCanceledOnTouchOutside(false)' method.
    override fun onTouchEvent(event: MotionEvent): Boolean = true
}

styles.xml

...
    <style name="DialogTheme" parent="Theme.AppCompat.Light.Dialog">
        <item name="android:windowNoTitle">true</item>
        <item name="android:colorBackgroundCacheHint">@null</item>
        <item name="android:windowIsTranslucent">true</item>
        <item name="android:windowAnimationStyle">@android:style/Animation</item>
        <item name="android:windowMinWidthMajor">90%</item>
        <item name="android:windowMinWidthMinor">90%</item>
    </style>
...