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// Empty checks
    //-----------------------------------------------------------------------
    /**
     * <p>Checks if a CharSequence is empty ("") or null.</p>
     *
     * <pre>
     * StringUtils.isEmpty(null)      = true
     * StringUtils.isEmpty("")        = true
     * StringUtils.isEmpty(" ")       = false
     * StringUtils.isEmpty("bob")     = false

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// capture photo
static final int REQUEST_IMAGE_CAPTURE = 1;
static final Uri mLocationForPhotos;

public void capturePhoto(String targetFilename) {
    Intent intent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
    intent.putExtra(MediaStore.EXTRA_OUTPUT,
            Uri.withAppendedPath(mLocationForPhotos, targetFilename);
    if (intent.resolveActivity(getPackageManager()) != null) {
        startActivityForResult(intent, REQUEST_IMAGE_CAPTURE);

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class MyActivity: Activity() {

  companion object {
    private const val MSG_SEARCH = 1
  }
  
  val handler = SearchHandler(this)
  
  override fun oncreate(bundle Bundle?) {
    v.setOnclickListener{

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object Activitys : Application.ActivityLifecycleCallbacks {

    private val list: LinkedList<SoftReference<Activity>> = LinkedList()


    fun first(): Activity? {
        if (list.size > 0) {
            list.forEach{
                if (null != it.get()) {
                    return it.get()

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<style name="ClickDisableEditText">
    <item name="android:cursorVisible">false</item>
    <item name="android:clickable">true</item>
    <item name="android:focusable">false</item>
</style>

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private fun uploadPicture(path: String) {
        showProgress(Strings.loading)
        val reqFile = RequestBody.create(MediaType.parse("image/*"), File(path))
        val params = MultipartBody.Part.createFormData("imageFile", path, reqFile)

        val call = apiService.upload(params)

        val callback = object : SimpleCallback<StringResponse>() {

            override fun onFinish() {

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class GiftImageView : ImageView {

    var gifDrawable: GifDrawable? = null
    set(value) {
        field = value
        setImageDrawable(gifDrawable)
    }

    constructor(context: Context?) : super(context)
    constructor(context: Context?, attrs: AttributeSet?) : super(context, attrs)

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Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

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package com.lanayru.views.widget;

import android.content.Context;
import android.content.res.Resources;
import android.graphics.drawable.Drawable;
import android.support.annotation.DrawableRes;
import android.support.v7.widget.TooltipCompat;
import android.text.TextUtils;
import android.util.AttributeSet;
import android.util.TypedValue;