donnfelker

@BindingAdapter(“isVisible”)
fun setIsVisible(view: View, isVisible: Boolean) {
	if (isVislble) { 
		view.visibility = View.VISIBLE
	} else {
		view.visibility = View.GONE
	}
}

donnfelker

Encoding Video

Installing

Install FFmpeg with homebrew. You'll need to install it with a couple flags for webm and the AAC audio codec.

brew install ffmpeg --with-libvpx --with-libvorbis --with-fdk-aacc --with-opus

donnfelker

#
# Build configuration for Circle CI
#
# See this thread for speeding up and caching directories:
# https://discuss.circleci.com/t/installing-android-build-tools-23-0-2/924
#

general:
    artifacts:
        - /home/ubuntu/AndroidCI/app/build/outputs/apk/

donnfelker

Friendly URLs

By default, Rails applications build URLs based on the primary key -- the id column from the database. Imagine we have a Person model and associated controller. We have a person record for Bob Martin that has id number 6. The URL for his show page would be:

/people/6

But, for aesthetic or SEO purposes, we want Bob's name in the URL. The last segment, the 6 here, is called the "slug". Let's look at a few ways to implement better slugs.

donnfelker

# Goes in your .git/config file
[alias]
  # Temporarily stop tracking a file in git. 
  # usage: git unwatch path/to/file
  unwatch = update-index --assume-unchanged
  
  # Resume tracking a file in git. 
  # usage: git watch path/to/file
  watch = update-index --no-assume-unchanged

donnfelker

#
# Build configuration for Circle CI
#
# See this thread for speeding up and caching directories: https://discuss.circleci.com/t/installing-android-build-tools-23-0-2/924
#

general:
    artifacts:
        - /home/ubuntu/AndroidCI/app/build/outputs/apk/

donnfelker

package com.donnfelker.rxexample;

import android.os.Bundle;
import android.support.v7.app.ActionBarActivity;

import rx.Subscriber;
import rx.Subscription;
import rx.android.schedulers.AndroidSchedulers;
import rx.schedulers.Schedulers;

donnfelker

#
# Build configuration for Circle CI
#

general:
    artifacts:
        - /home/ubuntu/your-app-name/app/build/outputs/apk/

machine:
    environment:

donnfelker

import android.graphics.*;
import com.squareup.picasso.Transformation;

/**
 * Transforms an image into a circle representation. Such as a avatar.
 */
public class CircularTransformation implements Transformation
{
    int radius = 10;

donnfelker

// Other build stuff
 task ndkBuild(type:Exec) {

    if(androidNdkPath != null) {
        def ndkBuild = new File(androidNdkPath, 'ndk-build')
        commandLine ndkBuild
    } else {
        // do something else
    }
}