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@JoseAlcerreca
JoseAlcerreca / Event.kt
Created April 26, 2018 10:25
An event wrapper for data that is exposed via a LiveData that represents an event.
/**
* Used as a wrapper for data that is exposed via a LiveData that represents an event.
*/
open class Event<out T>(private val content: T) {
var hasBeenHandled = false
private set // Allow external read but not write
/**
* Returns the content and prevents its use again.
@dseerapu
dseerapu / gist:b768728b3b4ccf282c7806a3745d0347
Last active October 25, 2022 15:04
Android app inactivity timeout | Android Logout timer
public class LogOutTimerUtil {
public interface LogOutListener {
void doLogout();
}
static Timer longTimer;
static final int LOGOUT_TIME = 600000; // delay in milliseconds i.e. 5 min = 300000 ms or use timeout argument
public static synchronized void startLogoutTimer(final Context context, final LogOutListener logOutListener) {

FWIW: I (@rondy) am not the creator of the content shared here, which is an excerpt from Edmond Lau's book. I simply copied and pasted it from another location and saved it as a personal note, before it gained popularity on news.ycombinator.com. Unfortunately, I cannot recall the exact origin of the original source, nor was I able to find the author's name, so I am can't provide the appropriate credits.


Effective Engineer - Notes

What's an Effective Engineer?

@nightscape
nightscape / Example.java
Created October 21, 2016 19:59
Simple RxJava-based adapter for an Android RecyclerView
public class ReactiveTextViewHolder<T> extends ReactiveViewHolder<T> {
private TextView label;
private T currentItem;
public ReactiveTextViewHolder(View itemView) {
super(itemView);
label = (TextView) itemView.findViewById(android.R.id.text1);
}
@nesquena
nesquena / SnappyRecyclerView.java
Last active June 21, 2023 23:04
Snap-to-Center RecyclerView Extension
// From: http://stackoverflow.com/a/37816976
public class SnappyRecyclerView extends RecyclerView {
// Use it with a horizontal LinearLayoutManager
// Based on http://stackoverflow.com/a/29171652/4034572
public SnappyRecyclerView(Context context) {
super(context);
}
@mustafasevgi
mustafasevgi / EndlessRecyclerOnScrollListener.java
Created April 7, 2016 13:07 — forked from imran0101/EndlessRecyclerOnScrollListener.java
RecyclerView position helper to get first and last visible positions
/**
* Custom Scroll listener for RecyclerView.
* Based on implementation https://gist.github.com/ssinss/e06f12ef66c51252563e
*/
public abstract class EndlessRecyclerOnScrollListener extends RecyclerView.OnScrollListener {
public static String TAG = "EndlessScrollListener";
private int previousTotal = 0; // The total number of items in the dataset after the last load
private boolean loading = true; // True if we are still waiting for the last set of data to load.
private int visibleThreshold = 5; // The minimum amount of items to have below your current scroll position before loading more.
@alexfu
alexfu / EqualSpacingItemDecoration.java
Last active September 17, 2024 09:36
Add equal spacing to RecyclerView items automatically. Can handle horizontal, vertical, and grid display modes
import android.graphics.Rect;
import android.support.v7.widget.GridLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.view.View;
public class EqualSpacingItemDecoration extends RecyclerView.ItemDecoration {
private final int spacing;
private int displayMode;
public static final int HORIZONTAL = 0;
@joinAero
joinAero / SightFragment.java
Created January 14, 2016 13:37
Android - Fragment for handling view after it has been created and visible to user for the first time.
package cc.cubone.turbo.core.app;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.View;
/**
* Fragment for handling view after it has been created and visible to user for the first time.
*
* <p>Specially in {@link android.support.v4.view.ViewPager}, the page will be created beforehand
@mandybess
mandybess / ItemDecoration.java
Last active April 6, 2024 09:56
RecyclerView extension that "sticks" items in the center on scroll
import android.graphics.Rect;
import android.support.v7.widget.RecyclerView;
import android.view.View;
public class ItemDecoration extends RecyclerView.ItemDecoration {
/**
*
* {@link #startPadding} and {@link #endPadding} are final and required on initialization
* because {@link android.support.v7.widget.RecyclerView.ItemDecoration} are drawn
@cesarferreira
cesarferreira / RxJava.md
Last active March 30, 2025 00:28
Party tricks with RxJava, RxAndroid & Retrolambda

View Click

Instead of the verbose setOnClickListener:

RxView.clicks(submitButton).subscribe(o -> log("submit button clicked!"));

Filter even numbers

Observable
    .just(1, 2, 3, 4, 5, 6, 7, 8, 9, 10)