topeterhonz

package peterho.kotlintipstricks

import android.content.Context
import android.support.annotation.AttrRes
import android.support.annotation.StyleRes
import android.support.v4.app.Fragment
import android.support.v4.app.FragmentManager
import android.support.v7.app.AlertDialog
import android.support.v7.widget.RecyclerView
import android.text.TextUtils

joshbuchea

Semantic Commit Messages

See how a minor change to your commit message style can make you a better programmer.

Format: <type>(<scope>): <subject>

<scope> is optional

Example

cretz

⚠️ THIS LIST IS STALE/OUTDATED, DO NOT REFERENCE OR ASSUME ANYTHING IS ACCURATE

Kotlin Annoyances

These are things that I found annoying writing a complex library in Kotlin. While I am also a Scala developer, these should not necessarily be juxtaposed w/ Scala (even if I reference Scala) as some of my annoyances are with features that Scala doesn't even have. This is also not trying to be opinionated on whether Kotlin is good/bad (for the record, I think it's good). I have numbered them for easy reference. I can give examples for anything I am talking about below upon request. I'm sure there are good reasons for all of them.

rondy

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.

---

Effective Engineer - Notes

• By Edmond Lau
• Highly Recommended 👍
• http://www.theeffectiveengineer.com/

What's an Effective Engineer?

kaushikgopal

public class RxSchedulerHook {

    private ISRxSchedulerHook() {
        // no instances
    }

    /**
     * this makes sure that when we run the tests all of RxJava
     * operates on a single thread (Scheduler.immediate)
     */

paulocaldeira17

import android.support.design.widget.AppBarLayout;

/**
 * App bar collapsing state
 * @author Paulo Caldeira <[email protected]>.
 */
public abstract class AppBarStateChangeListener implements AppBarLayout.OnOffsetChangedListener {
    // State
    public enum State {
        EXPANDED,

jonikarppinen

Example of using RxJava to listen to connectivity status in Android

You could use the same approach to listen to any status, but this example includes network connectivity specifics too (ConnectionChangeReceiver and AndroidUtils.isConnected).

maheshwarLigade

buildscript {
    repositories {
        mavenCentral()
        maven {
            url 'https://oss.sonatype.org/content/repositories/snapshots/'
        }
    }
    dependencies {
        classpath 'com.android.tools.build:gradle:0.9.+'
        classpath 'com.squareup.gradle:gradle-android-test-plugin:0.9.1-SNAPSHOT'

Tikitoo

<manifest>
    <!-- other code -->
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />
</manifest>

cristianpalomino

import android.content.Context;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.telephony.TelephonyManager;

/**
 * Check device's network connectivity and speed 
 * @author emil http://stackoverflow.com/users/220710/emil
 *
 */