jskierbi

@JsonTypeInfo(
  use = JsonTypeInfo.Id.NAME,
  include = JsonTypeInfo.As.EXISTING_PROPERTY,
  property = "type" // Field where type information is stored
)
@JsonSubTypes(
  JsonSubTypes.Type(TextItem::class, name = Item.TYPE_TEXT),
  JsonSubTypes.Type(PhotoItem::class, name = Item.TYPE_PHOTO),
  JsonSubTypes.Type(VideoItem::class, name = Item.TYPE_VIDEO)
)

jskierbi

# TLP with newer kernel (4.16+) tends to autosuspend USB bluetooth devices.
# To work this around, teak tlp settings (set USB_BLACKLIST_BTUSB=1)
$ nano /etc/default/tlp

(...)
# Bluetooth devices are excluded from USB autosuspend:
#   0=do not exclude, 1=exclude.
USB_BLACKLIST_BTUSB=1
(...) 

jskierbi

package de.jskierbi.commons.ui

import android.content.Context
import android.util.AttributeSet
import android.view.ViewGroup
import de.neofonie.meinwerder.R

/**
 * Created by jakub on 10.10.17.
 */

jskierbi

// For Jackson polymorphism see: 
// https://stackoverflow.com/questions/30362446/deserialize-json-with-jackson-into-polymorphic-types-a-complete-example-is-giv
@JsonTypeInfo(
  use = JsonTypeInfo.Id.NAME,
  include = JsonTypeInfo.As.EXISTING_PROPERTY,
  property = "type" // Field where type information is stored
)
@JsonSubTypes(
  JsonSubTypes.Type(TextItem::class, name = Item.TYPE_TEXT),
  JsonSubTypes.Type(PhotoItem::class, name = Item.TYPE_PHOTO),

jskierbi

package com.jskierbi.autodisposable

import android.arch.lifecycle.Lifecycle
import android.arch.lifecycle.Lifecycle.Event.*
import android.arch.lifecycle.LifecycleObserver
import android.arch.lifecycle.LifecycleOwner
import android.arch.lifecycle.OnLifecycleEvent
import io.reactivex.disposables.Disposable
import io.reactivex.disposables.Disposables
import kotlin.properties.ReadWriteProperty

jskierbi

import com.jakewharton.rxrelay2.PublishRelay
import io.reactivex.Observable

/**
 * EventBus implementation (pub-sub pattern). Enables posting and subscribing to any events.
 * http://blog.kaush.co/2014/12/24/implementing-an-event-bus-with-rxjava-rxbus/
 *
 * [post] method is shorthand for posting events to a bus
 * [subscribe] method is shorthand for listening for specific type of events on main thread
 * [observable] property exposes raw observable with events to enable custom operator usage

jskierbi

// https://kotlinlang.org/docs/reference/generics.html
// The Existential Transformation: Consumer in, Producer out! :-)

// Covariance (producer)
val covariantList: List<out Animal> = listOf<Lion>() // In Java: List<? extends Animal>
val animal: Animal = covariantList.get(0) // Ok
covariantList.put(Animal()) // Compilation error - compiler doesn't know exact 
			    // type of covariantList and is not sure if 
		      	    // it can store Animal (not all animals are lions)

jskierbi

package com.jskierbi.simplerx;

import android.app.Dialog;
import android.os.Bundle;
import android.support.v7.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.util.Log;
import android.view.View;
import android.widget.TextView;
import android.widget.Toast;

jskierbi

 /**
   * http://stackoverflow.com/questions/9730243/how-to-filter-specific-apps-for-action-send-intent-and-set-a-different-text-for?answertab=votes#tab-top
   */
  public void onShareClick() {
    Resources resources = getResources();
    PackageManager pm = getPackageManager();

    Intent sendIntent = new Intent(Intent.ACTION_SEND);
    sendIntent.setType("text/plain");
    List<ResolveInfo> resInfo = pm.queryIntentActivities(sendIntent, 0);

jskierbi

package net.slideshare.mobile.test.util;

import android.app.Activity;
import android.content.pm.ActivityInfo;
import android.support.test.espresso.UiController;
import android.support.test.espresso.ViewAction;
import android.support.test.internal.runner.lifecycle.ActivityLifecycleMonitorRegistry;
import android.support.test.runner.lifecycle.Stage;
import android.view.View;