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@jboner
jboner / latency.txt
Last active July 27, 2024 12:32
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
L1 cache reference 0.5 ns
Branch mispredict 5 ns
L2 cache reference 7 ns 14x L1 cache
Mutex lock/unlock 25 ns
Main memory reference 100 ns 20x L2 cache, 200x L1 cache
Compress 1K bytes with Zippy 3,000 ns 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@chrisbanes
chrisbanes / ForegroundLinearLayout.java
Created February 19, 2014 13:16
ForegroundLinearLayout
/*
* Copyright (C) 2006 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
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
@burgalon
burgalon / AccountAuthenticator.java
Last active July 15, 2023 08:29
Implementing OAuth2 with AccountManager, Retrofit and Dagger
public class AccountAuthenticator extends AbstractAccountAuthenticator {
private final Context context;
@Inject @ClientId String clientId;
@Inject @ClientSecret String clientSecret;
@Inject ApiService apiService;
public AccountAuthenticator(Context context) {
super(context);
@Shywim
Shywim / CursorRecyclerAdapter.java
Last active February 27, 2024 13:42
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
@lapastillaroja
lapastillaroja / DividerItemDecoration.java
Last active November 17, 2023 23:06 — forked from akmalxxx/DividerItemDecoration.java
DividerItemDecoration. RecyclerView.ItemDecoration simple implementation
import android.content.Context;
import android.content.res.TypedArray;
import android.graphics.Canvas;
import android.graphics.Rect;
import android.graphics.drawable.Drawable;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.AttributeSet;
import android.view.View;
@wong2
wong2 / cmds.txt
Last active May 2, 2021 12:13
在任意聊天中输入。 [ ]表示后面要跟一个空格(可能还需要别的参数才能生效)
//wearversion
//wearlog
//wearvoiceinputenable
//wearvoiceinputdisable
//weargoogleapi
//assert
//pushassert
//uplog
//upcrash
//switchnotificationstatus
@marcelpinto
marcelpinto / ControllableAppBarLayout.java
Last active December 12, 2019 03:42 — forked from blipinsk/ControllableAppBarLayout.java
An extension of Android AppBarLayout, that allows to programatically change the CollapsibleToolbarLayout state and receive state changes (collapsed, expanded and idle)
package com.eatfirst.android.ui.custom;
/**
* Copyright 2015 Bartosz Lipinski
*
* 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
@JonDouglas
JonDouglas / xamarin-android-performance.md
Last active February 28, 2024 17:44
Xamarin Android Performance

Xamarin.Android Performance Issues

1. Investigation

One of the best ways to investigate a problematic Xamarin.Android Errors is to first ensure you have the proper tooling available:

  • Diagnostic MSBuild Output Enabled(Instructions)
  • Android SDK Installed
  • Android API Level Documentation
@tasomaniac
tasomaniac / screenrecord.sh
Last active June 28, 2022 22:05 — forked from PaulKinlan/getdeviceart.sh
Screen Record for Android
#!/bin/sh
set -e
if [ -z "$1" ]; then
shot_path=$(date +%Y-%m-%d-%H-%M-%S).mp4
else
shot_path="$*"
fi
@nickbutcher
nickbutcher / MainActivity.java
Last active August 20, 2021 16:15
A quick sample of the new physics-based animation library added in Support Library 25.3.0 docs: https://developer.android.com/reference/android/support/animation/package-summary.html output: https://twitter.com/crafty/status/842055117323026432
/*
* Copyright 2017 Google Inc.
*
* 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