dlew

public static Action1<Throwable> crashOnError() {
    final Throwable checkpoint = new Throwable();
    return throwable -> {
        StackTraceElement[] stackTrace = checkpoint.getStackTrace();
        StackTraceElement element = stackTrace[1]; // First element after `crashOnError()`
        String msg = String.format("onError() crash from subscribe() in %s.%s(%s:%s)",
            element.getClassName(),
            element.getMethodName(),
            element.getFileName(),
            element.getLineNumber());

JakeWharton

import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.drawable.Drawable;
import android.util.AttributeSet;
import android.widget.ImageView;

public class ForegroundImageView extends ImageView {
  private Drawable foreground;

staltz

The introduction to Reactive Programming you've been missing

(by @andrestaltz)

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This tutorial as a series of videos

If you prefer to watch video tutorials with live-coding, then check out this series I recorded with the same contents as in this article: Egghead.io - Introduction to Reactive Programming.

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