| fun main() { | |
| FakeAppFeatures { | |
| if (SomeFeature.enabled) { | |
| println("some feature is enabled!") | |
| } | |
| } | |
| } | |
| sealed class Feature | |
| object SomeFeature : Feature() |
| fun <T> Fragment.viewLifecycle(bindUntilEvent: Lifecycle.Event = Lifecycle.Event.ON_DESTROY): ReadWriteProperty<Fragment, T> = | |
| object: ReadWriteProperty<Fragment, T>, LifecycleObserver { | |
| // A backing property to hold our value | |
| private var binding: T? = null | |
| private var viewLifecycleOwner: LifecycleOwner? = null | |
| init { | |
| // Observe the View Lifecycle of the Fragment |
It's a lot easier to test accessibility on the fly using ADB. This gist attempts to make the days of navigating through the Android device settings UI to change Accessibility settings obsolete.
These ADB commands will hopefully encourage Android developers to test and use their apps with common Accessiblility settings enabled.
Credit to James Nitsch for inspiring this, and for figuring out the put commands to enable these settings.
| package catvinhquang.androiddeveloper; | |
| import android.animation.ValueAnimator; | |
| import android.content.Context; | |
| import android.graphics.Canvas; | |
| import android.graphics.Paint; | |
| import android.support.annotation.Nullable; | |
| import android.support.v7.widget.RecyclerView; | |
| import android.util.AttributeSet; |
| /* Copyright 2019 The Android Open Source Project | |
| * | |
| * Licensed under the Apache License, Version 2.0 (the "License"); | |
| * you may not use this file except in compliance with the License. | |
| * You may obtain a copy of the License at | |
| * | |
| * https://www.apache.org/licenses/LICENSE-2.0 | |
| * | |
| * Unless required by applicable law or agreed to in writing, software | |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| Apache License | |
| Version 2.0, January 2004 | |
| http://www.apache.org/licenses/ | |
| TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION | |
| 1. Definitions. | |
| "License" shall mean the terms and conditions for use, reproduction, | |
| and distribution as defined by Sections 1 through 9 of this document. |
| /** | |
| * An [Observer] for [Event]s, simplifying the pattern of checking if the [Event]'s content has | |
| * already been handled. | |
| * | |
| * [onEventUnhandledContent] is *only* called if the [Event]'s contents has not been handled. | |
| */ | |
| class EventObserver<T>(private val onEventUnhandledContent: (T) -> Unit) : Observer<Event<T>> { | |
| override fun onChanged(event: Event<T>?) { | |
| event?.getContentIfNotHandled()?.let { value -> | |
| onEventUnhandledContent(value) |
| public class NewIntentProcessor extends AbstractProcessor { | |
| private static final String METHOD_PREFIX = "start"; | |
| private static final ClassName classIntent = ClassName.get("android.content", "Intent"); | |
| private static final ClassName classContext = ClassName.get("android.content", "Context"); | |
| private Filer filer; | |
| private Messager messager; | |
| private Elements elements; | |
| private Map<String, String> activitiesWithPackage; |
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.
