stepango

class KotlinActivity : Activity() {

    val btn: Button? by find(R.id.button)

    override fun onCreate(savedInstanceState: Bundle?) {
        super<Activity>.onCreate(savedInstanceState)
        setContentView(R.layout.main)
        btn?.setText("Hello from kotlin")
    }

stepango

import android.app.Activity
import android.widget.Toast
import android.view.View
import kotlin.properties.Delegates
import android.app.Fragment

fun Activity.toast(s: CharSequence, length: Int = Toast.LENGTH_SHORT) =
        Toast.makeText(this, s, length).show()

fun <T : View?>Activity.find(id: Int) =

stepango

<!-- RED -->
<color name="red_50">#fde0dc</color>
<color name="red_100">#f9bdbb</color>
<color name="red_200">#f69988</color>
<color name="red_300">#f36c60</color>
<color name="red_400">#e84e40</color>
<color name="red_500">#e51c23</color>
<color name="red_600">#dd191d</color>
<color name="red_700">#d01716</color>
<color name="red_800">#c41411</color>

stepango

Integer getVersionCode() {
    def sout = new StringBuffer()
    def proc = 'git rev-list HEAD --count'.execute()
    proc.consumeProcessOutput(sout, new StringBuffer())
    proc.waitForOrKill(1000)
    return sout.toInteger()
}

stepango

public class App extends Application {
    public void onCreate() {
        super.onCreate();
        AsyncTask.execute(new Runnable() {
            @Override
            public void run() {
                Glide.get(App.this).register(GlideUrl.class, InputStream.class,
                        new OkHttpUrlLoader.Factory(new OkHttpClient()));
            }
        });

stepango

package com.bandlab.bandlab.transformation;

import android.content.Context;
import android.graphics.Bitmap;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Paint;
import android.graphics.PorterDuff;
import android.graphics.PorterDuffColorFilter;
import android.support.annotation.ColorRes;

stepango

[ERROR]: cannot generate view binders java.lang.NoClassDefFoundError: kotlin/jvm/internal/ExtensionFunctionImpl
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:760)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:455)
	at java.net.URLClassLoader.access$100(URLClassLoader.java:73)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:367)
	at java.net.URLClassLoader$1.run(URLClassLoader.java:361)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.net.URLClassLoader.findClass(URLClassLoader.java:360)

stepango

/*
 * Copyright (C) 2011 Micah Hainline
 * Copyright (C) 2012 Triposo
 * Copyright (C) 2013 Paul Imhoff
 * Copyright (C) 2014 Shahin Yousefi
 * Copyright (C) 2015 Stepan Goncharov
 *
 * 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

stepango

/*
 * Copyright (C) 2011 Micah Hainline
 * Copyright (C) 2012 Triposo
 * Copyright (C) 2013 Paul Imhoff
 * Copyright (C) 2014 Shahin Yousefi
 * Copyright (C) 2015 Stepan Goncharov
 *
 * 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

stepango

fun String?.isEmpty() :Boolean = this == null || "".equals(this)
val a :String? = null
a.isEmpty() // true