Skip to content

Instantly share code, notes, and snippets.

View veyndan's full-sized avatar

Veyndan Stuart veyndan

View GitHub Profile
@serj-lotutovici
serj-lotutovici / GenericPolymorphicJsonAdapterFactory.java
Last active May 8, 2022 19:45
A Moshi JsonAdapter.Factory that creates Polymorphic JsonAdapter. Requires Moshi 1.4.0. (Tests written in kotlin)
import com.squareup.moshi.JsonAdapter;
import com.squareup.moshi.JsonDataException;
import com.squareup.moshi.JsonReader;
import com.squareup.moshi.JsonWriter;
import com.squareup.moshi.Moshi;
import com.squareup.moshi.Types;
import java.io.IOException;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.LinkedHashMap;
public class ObservableTest {
@Test
public void observable_withRecursion_returnsAllObjects() {
final int maxPageNum = 15;
getIntegers(1, 5, maxPageNum)
.subscribe(System.out::println);
}
private Observable<Integer> getIntegers(final int pageStart, final int pageSize, final int maxPageNum) {
@JohNan
JohNan / QuickReturnRecyclerView.java
Created November 12, 2014 15:38
A simple RecyclerView where a Quick Return view can be added either at the top or the bottom. Inspired by https://github.com/LarsWerkman/QuickReturnListView
import android.content.Context;
import android.os.Build;
import android.support.v7.widget.RecyclerView;
import android.util.AttributeSet;
import android.view.Gravity;
import android.view.View;
import android.view.ViewGroup;
import android.view.animation.TranslateAnimation;
import android.widget.FrameLayout;
@dlew
dlew / themes-debug.xml
Last active January 20, 2025 16:07
With the new theming in AppCompat, a lot of assets are tinted automatically for you via theme attributes. That has often led me to wonder "where the hell did this color come from?" You can replace your normal theme with this debug theme to help figure out the source of that color.
<!-- You can change the parent around to whatever you normally use -->
<style name="DebugColors" parent="Theme.AppCompat">
<!-- System colors -->
<item name="android:windowBackground">@color/__debugWindowBackground</item>
<item name="android:colorPressedHighlight">#FF4400</item>
<item name="android:colorLongPressedHighlight">#FF0044</item>
<item name="android:colorFocusedHighlight">#44FF00</item>
<item name="android:colorActivatedHighlight">#00FF44</item>
@skyfishjy
skyfishjy / CursorRecyclerViewAdapter.java
Last active March 18, 2025 21:07
CursorRecyclerViewAdapter
/*
* Copyright (C) 2014 [email protected]
*
* 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
@Shywim
Shywim / CursorRecyclerAdapter.java
Last active February 28, 2025 09:59
A custom Adapter for the new RecyclerView, behaving like the CursorAdapter class from previous ListView and alike. Now with Filters and updated doc.
/*
* The MIT License (MIT)
*
* Copyright (c) 2014 Matthieu Harlé
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
@JakeWharton
JakeWharton / AutoGson.java
Last active January 1, 2025 22:35
A Gson TypeAdapterFactory which allows serialization of @autovalue types. Apache 2 licensed.
import com.google.auto.value.AutoValue;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
/**
* Marks an {@link AutoValue @AutoValue}-annotated type for proper Gson serialization.
* <p>
@staltz
staltz / introrx.md
Last active June 8, 2025 22:15
The introduction to Reactive Programming you've been missing
@scaryguy
scaryguy / change_primary_key.md
Last active February 4, 2025 02:09
How to change PRIMARY KEY of an existing PostgreSQL table?
-- Firstly, remove PRIMARY KEY attribute of former PRIMARY KEY
ALTER TABLE <table_name> DROP CONSTRAINT <table_name>_pkey;
-- Then change column name of  your PRIMARY KEY and PRIMARY KEY candidates properly.
ALTER TABLE <table_name> RENAME COLUMN <primary_key_candidate> TO id;