gbzarelli

class ListSelectorActivity : AppCompatActivity() {

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_list_selector)
        setSupportActionBar(toolbar)

        createViewPageAdapter()

        fab.setOnClickListener {

gbzarelli

class ChatAdapter(context: Context,
                  private val messages: List<ObMensage>,
                  private val onClick: RecyclerViewAdapter.RecyclerAdapterListener<ObMensage>?) :
        RecyclerView.Adapter<ChatAdapter.Holder>() {

    private val inflater: LayoutInflater = LayoutInflater.from(context)
    private val textSending: String = context.getString(R.string.status_msg_sending)
    private val textSent: String = context.getString(R.string.status_msg_sent)
    private val textRead: String = context.getString(R.string.status_msg_read)

gbzarelli

object GpxMath {

    fun calculateGain(indexStartTrkPt: Int, trkPts: List<TrkPt>): Pair<Double, Double> {
        var constMediaAccuracy = 0.0
        val size = trkPts.size
        for (i in 0 until size) {
            constMediaAccuracy += trkPts[i].accuracy
        }
        constMediaAccuracy /= size

gbzarelli

/**
Doc: https://developer.android.com/reference/android/arch/lifecycle/ProcessLifecycleOwner
belongs to Maven artifact "android.arch.lifecycle:extensions:1.1.1" (include in your dependences)
*/
class MyApplication : Application(), LifecycleObserver {

    override fun onCreate() {
        super.onCreate()
        ProcessLifecycleOwner.get().lifecycle.addObserver(this)
    }

gbzarelli

fun getDefaultPackageNameOfLauncher():String{
  PackageManager localPackageManager = getPackageManager();
  Intent intent = new Intent(Intent.ACTION_MAIN);
  intent.addCategory(Intent.CATEGORY_HOME);
  return localPackageManager.resolveActivity(intent, PackageManager.MATCH_DEFAULT_ONLY).activityInfo.packageName;
}

gbzarelli

val intent = Intent(ChatActivity.ACTION_VIEW)
intent.putExtra(ChatActivity.PARAM_OBJECT, group)
intent.flags = Intent.FLAG_ACTIVITY_CLEAR_TOP
val pendingIntent = PendingIntent
  .getActivity(context, 0, intent, PendingIntent.FLAG_CANCEL_CURRENT)

// Activities: A(Main), B e C - O codigo acima gera uma nova activity B na mesma task, excluindo a B, C anterior.
// Manifest: Main activity: android:launchMode="singleTask"

gbzarelli

 protected SwipeRefreshLayout swipe;
 
   swipe = layout.findViewById(swipeId);
        swipe.setOnRefreshListener(new SwipeRefreshLayout.OnRefreshListener() {
            @Override
            public void onRefresh() {
                sendRequest();
            }
        });
        

gbzarelli

// https://developer.android.com/training/implementing-navigation/ancestral

    override fun onSupportNavigateUp(): Boolean {
        navigationUp(false)
        return true
    }

    override fun onBackPressed() {
        navigationUp(true)
    }

gbzarelli

/**
* A interface funcional é declarada no método:
*    myFuncionalInterface: (Int,String) -> Unit
* A interface acima tem como parametro um Int e uma String, ele é chamado como se fosse um método pelo proprio nome:
*    myFuncionalInterface(1,"Sucesso")
*/
fun methodFuncionalInterface(username: String, password: String, myFuncionalInterface: (Int,String) -> Unit) {
    ...
    myFuncionalInterface(1,"Sucesso")
    ...

gbzarelli

  public static void main(String[] args) throws InterruptedException {
        ExecutorService pool = Executors.newFixedThreadPool(2);
        pool.submit(() -> {
            try {
                Thread.sleep(5000);
            } catch (Exception e) {
            }
            System.out.println("5s");
        });
        pool.submit(() -> {