David Wong - LaptrinhX

Restart Android Activity with ActivityScenario

I was writing an instrumentation test which required restarting the activity during a test. As I was trying out the ActivityScenarioRule to replace an ActivityTestRule, the documentation says I can use this method on the ActivityScenario to restart the activity after it has been launched:1scenario.recreate()So I wrote this function to for restarting the activity:[email protected] @JvmField var rule = ActivityScenarioRule(MyActivity::class.java)

Update Your Fake AndroidInjector

Using Dagger 2 for dependency injection means that you can inject fake / mock objects for testing. I had been using a fake AndroidInjector to do this in my Espresso tests for an old Android app I was updating, but found that on updating Dagger to a more recent version (from 2.14 to 2.21) the custom AndroidInjector no longer compiled.The fake AndroidInjector I was using was based

Crashlytics and Android: Clean Way to Use Custom Crash Reports?

I was implementing Firebase Crashlytics for crash reporting for an Android app, and came across their documentation for customizing the reports.Having things like additional logging and

RxPreferences and Dagger

I have been rewriting a Settings (Preferences) activity for an old Android app. Since I was using RxJava in the app, I decided to try out RxPreferences which allows you to use SharedPreferences with a reactive wrapper.I found it quite good to use, although the blog post that accompanies it is a bit out of date. While I did’t use RxBinding with it, it still had these advantages:

Gradle Dependencies for Java, use compile or implementation?

While I was explaining to a colleague about using Gradle for Java projects (he was moving away from Maven), we came across various code samples. Some of the examples were using the compile configuration for dependencies, while others were using implements and api.dependencies { compile 'commons-httpclient:commons-httpclient:3.1' compile 'org.apache.commons:commons-lang3:3.5' }dependencies { api 'commons-httpclient:commons-httpclient:3.1' implementation 'org.apache.commons:commons-lang3:3.5' }This

JRebel for a Gradle Spring Boot App

There is some documentation on how to add JRebel to a Spring Boot app that uses Gradle as the build tool. It is basic but works fine.All you have to do is to add a few lines to build.gradle:if (project.hasProperty('rebelAgent')) { bootRun.jvmArgs += rebelAgent }Then set the property in gradle.properties:rebelAgent=-agentpath:[path/to/JRebel library]However there are several ways to improve on this.