Skip to content

Instantly share code, notes, and snippets.

View TreyCai's full-sized avatar

trey TreyCai

  • Shenzhen
View GitHub Profile
public class CircularProgressDrawable extends Drawable
implements Animatable {
private static final Interpolator ANGLE_INTERPOLATOR = new LinearInterpolator();
private static final Interpolator SWEEP_INTERPOLATOR = new DecelerateInterpolator();
private static final int ANGLE_ANIMATOR_DURATION = 2000;
private static final int SWEEP_ANIMATOR_DURATION = 600;
private static final int MIN_SWEEP_ANGLE = 30;
private final RectF fBounds = new RectF();
@alexfu
alexfu / ColorUtils.java
Last active January 30, 2023 00:04
Automatic text color selection using relative luminance.
public class ColorUtils {
private static final double LM_RED_COEFFICIENT = 0.2126;
private static final double LM_GREEN_COEFFICIENT = 0.7152;
private static final double LM_BLUE_COEFFICIENT = 0.0722;
public static int calculateRelativeLuminance(int color) {
int red = (int) (Color.red(color) * LM_RED_COEFFICIENT);
int green = (int) (Color.green(color) * LM_GREEN_COEFFICIENT);
int blue = (int) (Color.blue(color) * LM_BLUE_COEFFICIENT);
return red + green + blue;
public Bitmap blurBitmap(Bitmap bitmap){
//Let's create an empty bitmap with the same size of the bitmap we want to blur
Bitmap outBitmap = Bitmap.createBitmap(bitmap.getWidth(), bitmap.getHeight(), Config.ARGB_8888);
//Instantiate a new Renderscript
RenderScript rs = RenderScript.create(getApplicationContext());
//Create an Intrinsic Blur Script using the Renderscript
ScriptIntrinsicBlur blurScript = ScriptIntrinsicBlur.create(rs, Element.U8_4(rs));
@chrisbanes
chrisbanes / FloatLabelLayout.java
Last active March 15, 2024 06:39
FloatLabelLayout
/*
* Copyright 2014 Chris Banes
*
* 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
@Takhion
Takhion / ArcUtils.java
Last active April 11, 2022 02:29
Collection of methods to achieve better circular arc drawing, as Canvas.drawArc() is unreliable. See the related article: https://medium.com/p/9155f49166b8
/**
* ArcUtils.java
*
* Copyright (c) 2014 BioWink GmbH.
*
* 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
@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
@ignasi
ignasi / resizer-xxhdpi.sh
Last active February 7, 2021 15:29
Android XXHDPI Resizer (Tested on OS X Mavericks)
#!/bin/bash
f=$(pwd)
mkdir drawable-mdpi drawable-hdpi drawable-xhdpi drawable-xxhdpi
# fake argv and argc in bash
argc=$#; argv[0]=$0 # argv[0] is a prog name
for foo in $( seq $argc )
do
@gmccreight
gmccreight / master.vim
Last active September 23, 2023 08:41
A script that gives you a playground for mastering vim
" copy all this into a vim buffer, save it, then...
" source the file by typing :so %
" Now the vim buffer acts like a specialized application for mastering vim
" There are two queues, Study and Known. Depending how confident you feel
" about the item you are currently learning, you can move it down several
" positions, all the way to the end of the Study queue, or to the Known
" queue.
" type ,, (that's comma comma)
public class AnimatedActivity extends Activity
{
@Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
//opening transition animations
overridePendingTransition(R.anim.activity_open_translate,R.anim.activity_close_scale);
}
@dodyg
dodyg / gist:5823184
Last active March 29, 2024 03:59
Kotlin Programming Language Cheat Sheet Part 1

#Intro

Kotlin is a new programming language for the JVM. It produces Java bytecode, supports Android and generates JavaScript. The latest version of the language is Kotlin M5.3

Kotlin project website is at kotlin.jetbrains.org.

All the codes here can be copied and run on Kotlin online editor.

Let's get started.