Lopez Mikhael lopspower

Hexadecimal color code for transparency

How to set transparency with hex value ?

For example, you want to set 40% alpha transparence to #000000 (black color), you need to add 66 like this #66000000.

All hex value from 100% to 0% alpha:

Centralize the support libraries dependencies in gradle

Working with multi-modules project, it is very useful to centralize the dependencies, especially the support libraries.

A very good way is to separate gradle build files, defining something like:

root
  --gradleScript
 ----dependencies.gradle

Simple RecyclerView Divider

Simple Horizontal Divider Item Decoration for RecyclerView

    mRecyclerView.addItemDecoration(new SimpleDividerItemDecoration(
            getApplicationContext()
    	));

NOTE: Add item decoration prior to setting the adapter

You can use this class to realize a simple sectioned RecyclerView.Adapter without changing your code.

The RecyclerView should use a LinearLayoutManager. You can use this code also with the TwoWayView with the ListLayoutManager (https://github.com/lucasr/twoway-view)

This is a porting of the class SimpleSectionedListAdapter provided by Google

Example:

	image: ubuntu:22.04

	variables:
	ANDROID_COMPILE_SDK: "33"
	ANDROID_BUILD_TOOLS: "33.0.2"
	EMULATOR_IMAGE: "24"
	SDK_TOOLS: "9477386" # from https://developer.android.com/studio/#command-tools

	before_script:


	import android.app.Activity;
	import android.content.Intent;
	import android.os.Bundle;

	import java.util.concurrent.TimeUnit;

	import rx.Observable;
	import rx.Observer;
	import rx.Subscription;

	public class ClickToSelectEditText<T extends Listable> extends AppCompactEditText {

	List<T> mItems;
	String[] mListableItems;
	CharSequence mHint;

	OnItemSelectedListener<T> onItemSelectedListener;

	public ClickToSelectEditText(Context context) {
	super(context);

	import android.support.v7.widget.RecyclerView;
	import android.view.View;
	import android.view.ViewGroup;
	import android.widget.Button;
	import android.widget.TextView;

	/**
	* Created by khaled bakhtiari on 10/26/2014.
	* <a href="http://about.me/kh.bakhtiari">
	*/

	package net.stf.threelevelexpandablelistview;

	import android.content.Context;
	import android.os.Bundle;
	import android.support.v7.app.AppCompatActivity;
	import android.view.LayoutInflater;
	import android.view.View;
	import android.view.ViewGroup;
	import android.widget.BaseExpandableListAdapter;
	import android.widget.ExpandableListView;