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Jay Newstrom JayNewstrom

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dlew /
Created Nov 9, 2018
Simple AndroidX Migration Script
#!/usr/bin/env bash
# I've found that the "Migrate to AndroidX" converter in Android Studio doesn't work very
# well, so I wrote my own script to do the simple job of converting package names.
# You can download a CSV of package names here:
# It'll run faster on a clean build because then there are fewer files to scan over.
# Uses `gsed` because I'm on a Mac. Can easily replace with `sed` if you don't have `gsed`.
neworld /
Last active Nov 27, 2018
How to make faster Android build without sacrificing new api lint check

Original solution sacrifices new api lint check.

Here my solution:

int minSdk = hasProperty('minSdk') ? minSdk.toInteger() : 16

apply plugin: ''

android {
    compileSdkVersion 23
JakeWharton /
Last active Mar 15, 2019
A comparison between non-capturing and capturing expressions across Java 6, Java 8, Java 8 with Retrolambda, Kotlin with native function expressions, and Kotlin with Java SAM expression.
import java.util.Arrays;
class NonCapturing {
public static void main(String... args) {
run(new Runnable() {
@Override public void run() {
RomainPiel /
Last active Feb 9, 2019
Source for - "RecyclerView and espresso, a complicated story"
.check(new ItemViewAssertion<Item>() {
public void check(Item item, View view, NoMatchingViewException e) {
.check(view, e);
JakeWharton /
Last active Jan 11, 2019
Got flaky tests? Shampoo them away with a quick JUnit rule. Apache 2.
import org.junit.rules.TestRule;
import org.junit.runner.Description;
import org.junit.runners.model.Statement;
/** Got flaky tests? Shampoo them away. */
public final class ShampooRule implements TestRule {
private final int iterations;
public ShampooRule(int iterations) {
if (iterations < 1) throw new IllegalArgumentException("iterations < 1: " + iterations);
public class Dexter {
private static String optimizedDirectory = "optimized";
private static String workDirectory = "working";
public static void loadFromAssets(Context context, String fileName) throws Exception {
File optimized = new File(optimizedDirectory);
optimized = context.getDir(optimized.toString(), Context.MODE_PRIVATE);
optimized = new File(optimized, fileName);
JakeWharton /
Created Jun 2, 2012
ImageView that respects an aspect ratio applied to a specific measurement.
// Copyright 2012 Square, Inc.
package com.squareup.widgets;
import android.content.Context;
import android.content.res.TypedArray;
import android.util.AttributeSet;
import android.widget.ImageView;
/** Maintains an aspect ratio based on either width or height. Disabled by default. */
public class AspectRatioImageView extends ImageView {
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