ronshapiro

1. You can implement View.getActivity() like this:

public interface ViewWithActivity {
  // Using android-gradle-plugin 3.0, which has the desugar step for default methods on interfaces
  default Activity getActivity() {
    // https://android.googlesource.com/platform/frameworks/support/+/03e0f3daf3c97ee95cd78b2f07bc9c1be05d43db/v7/mediarouter/src/android/support/v7/app/MediaRouteButton.java#276
    Context context = getContext();
    while (context instanceof ContextWrapper) {
      if (context instanceof Activity) {

ronshapiro

class F {
  constructor(protected a: string) {
    console.log("F.a", a);
    console.log("F.this.a", this.a);
  }

  b() {
    console.log("F.b.this.a", this.a);
  }
}

ronshapiro

iOS <> Android Vocab Cheat Sheet

A couple months ago while at Venmo, @chrismaddern and I discussed the lack of a bidirectional dictionary/vocab list of parallel terms in Android and iOS. It's important to know what your teammates are refering when they talk about code, even if you're not engaged with it every day. This is a beginning attempt to finally break down that knowledge gap. The goal is to allow developers of one framework to understand the basics of the other and should someone want to make the switch, this can be a resource in helping learn the new framework.

If there's a topic that you think would be interesting to discuss, tweet at me and we'll get include it in this list. I'll be updating this post with links to all future posts.

Disclaimer: I'm an Android developer and have done minimal iOS/Objective-C programming. If there is anything incorrect, reach out and I'll fix it as soon as possible. I'm assuming iOS developer are

ronshapiro

Most Dagger errors are in the format:

src/main/java/dagger/playground/Playground.java:20: [Dagger/DuplicateBindings] dagger.playground.E is bound multiple times:
  A a();
    ^
      @Provides dagger.playground.E dagger.playground.Mod.first()
      @Provides dagger.playground.E dagger.playground.Mod.second()
  
      dagger.playground.E is injected at

ronshapiro

@Subcomponent
public abstract class MonolithicActivityInjector implements AndroidInjector<Activity> {
  @Override
  public final void inject(Activity activity) {
    if (activity instanceof RedActivity) {
      inject((RedActivity) activity);
    } else if (activity instanceof BlueActivity) {
      inject((BlueActivity) activity);
    } else if (activity instanceof YellowActivity) {
      inject((YellowActivity) activity);

ronshapiro

class Parent {

  // Somewhere in here, a lot of external service modules are included and contribute their `Service` impls to this multibinding
  @Inject lateinit var services: Map<String, Provider<Service>>

  fun showChild() {
    addChildController(serviceKey = "barServiceKey") // Key into the services map
  }

}

ronshapiro

package me.ronshapiro.rxjavatest.app;

import java.util.concurrent.Executors;

import rx.Observable;
import rx.Observable.OnSubscribe;
import rx.Scheduler;
import rx.Subscriber;
import rx.Subscription;
import rx.android.schedulers.AndroidSchedulers;

ronshapiro

Registering on Sonatype

Follow steps 2 and 3 here to create an account on Sonatype: https://docs.sonatype.org/display/Repository/Sonatype+OSS+Maven+Repository+Usage+Guide

Generate your signing keys

https://docs.sonatype.org/display/Repository/How+To+Generate+PGP+Signatures+With+Maven

If you don't have gpg installed: brew install gpg

Create a key by running gpg --gen-key and make sure to save your passphrase.

ronshapiro

# easily parse Logcat output
alog () {
    parser=ack
    if [[ -e `which ack` ]]; then
        parser=grep
    fi
    if (( $# == 0 )); then
        adb logcat -v time
    elif [[ $1 == "runtime" ]]; then
        pattern='E/AndroidRuntime'

ronshapiro

#############################################
# Attach tmux to the first detached session 
#############################################
 
if [[ -z $TMUX ]]; then
    TMUX_SESSIONS=`tmux list-sessions -F "#{session_name}ABC#{?session_attached,attached,not_attached}" 2>&1`
    TMUX_FOUND=0
    for i in $TMUX_SESSIONS
    do
        IS_ATTACHED=`echo $i | awk '{split($0,array,"ABC"); print array[2]}'`