B4XGoods-B4X好物整理，每周六更新

WhatsApp a few years ago had published APIs that allowed to send messages to a specific number. For some time, those methods no longer work and new methods appear on the official website. (see: https://faq.whatsapp.com/en/android/28000012) You can now open a conversation with a phone number but not preset the message. Or, in the opposite direction, determine which message but not specify who should receive it. Yet with Google+ (and all Browser) you can select the user and the message with the entry. So there is an official method and is not documented. Or these bees are paid for commercial use. The only documentation that is found and how to send a message set to a specific user across the Web. (https://faq.whatsapp.com/en/android/26000030/?category=5245251) By using this I created a small code that allows an App to send a specific message to a specific user. Anyway, you have to confirm by WhatsApp .... but it is already something ... I attach the code

@Star-Dust · 2017-11-25

B4ASnippetFirebase

Read only Keys of a Node in Firebase Database via REST API

Code to get just the keys (nodes, childnames, ...) of a Database path.

@fredo · 2017-11-19

B4ASnippetOther

IPInfo - B4A Library source code

- Get external IP, latitude and longitude, ISP, and more. - Country information based on IP. - Speed test.

@NJDude · 2017-11-19

B4ASnippetRandomise

Weighted Random

Say you are a game developer and you want to get a random weather condition where the probability of "sunny" is 50%, the probability of "rain" is 30% and the probability of "fog" is 20%.: WeightedRandom_GetValue("sunny:0.5, rain:0.3, fog:0.2")

@wonder · 2017-11-12

B4ASnippetViews - events

Swipe to Action

I tried many times to achieve a delete effect such as Gmail app without using a CustomListView, but without success. Without access, since today. This is the code, hoping that can help

@Emme Developer · 2017-11-08

B4ASnippetGPS/location/maps

Google Maps POI details

In Google maps there are more than 100 million businesses and points of interest that are updated frequently through owner-verified listings and user-moderated contributions. In order to get details of one of these, when an user click on it on maps, you need a key. After followed this tutorial, add this code

@Emme Developer · 2017-11-02

B4ASnippetWifi

Wifi dis/connection event

This code snippet checks when WIFI will be connect or disconnect. Note that this works only for wifi event, if you want any connection event you should use instead android.net.conn.CONNECTIVITY_CHANGE (in this case this code will not work).

@Emme Developer · 2017-11-01

B4ASnippetDatabase

SQlite: Backup database and alter table

Here''s a little sub to backup and alter a table (assuming you have all the SQlite parts in the starter service). The sub checks if the column is already defined. Of course you can leave the loop at once with a return. For debug reasons I''ve used a Boolean here.

@KMatle · 2017-10-30

B4ASnippetJSON

JSON - GetObjFromPath()

This code helps you navigate JSON trees like a boss!

@wonder · 2017-10-30

B4ASnippetPDF

PDF: Calculate chars per line/lines per page

PDF: Calculate chars per line/lines per page

@KMatle · 2017-10-29

B4ASnippetDialogs

Non-centered Custom layout dialog

This example uses JavaObject to change the CustomLayoutDialog position. It also demonstrates how to access the layout fields and how to make sure that the keyboard is closed when the dialog is dismissed.

@Erel · 2017-10-26

B4ASnippetDialogs

SD: MsgBox re-stylized

There are many libraries that update and modify MsgBox and all interesting, but no one meets my needs. So I created someone I did. I hope someone else might be useful. It''s not a library. Only snippets of code. Does not require any additional library. You can include on your sources or you can wrap them into Class.

@Star-Dust · 2017-10-23

B4ASnippetAnimation

Simple Halo Animation

Code to create a nice halo animation

@Erel · 2017-10-17

B4ASnippetMaths

Python Modulo

In Python, the modulo (%) of a negative number is calculated differently providing us a more useful result for real-life applications.

@wonder · 2017-10-04

B4ASnippetB4A [A:B]

PyRange() - Python index operator [a:b]

Obtain any object or range of objects (or characters from a String), using square brackets, just like in Python.

@wonder · 2017-10-04

B4ASnippetStrings

isIn() - Python ''In''

isIn() - Find anything in anything!! :) Replicates the behavior of the Python keyword ''in'' which returns true if something is part of something else

@wonder · 2017-10-04

B4ASnippetUpdater

Check an update server, fetch and install a new app version

Check an update server, fetch and install a new app version

@nwhitfield · 2017-09-27

B4ASnippetFirebase

Get Firebase shortlink from long dynamic link

Code to get a shortlink from a long dynamic deeplink via "Firebase Dynamic Links REST API"

@fredo · 2017-09-25

B4ASnippethttp

Set HTTP Request Header with HttpUtils2

Set HTTP Request Header with HttpUtils2

@Erel · 2017-09-17

B4ASnippetContacts

Simulating Android App Contacts behavior

I have needed a kind of email address manager and I have added it the Android App Contacts behavior using a CustomListView, an sticky first char while scrolling.

@Manuel Martinez · 2017-09-11

B4ASnippetList- and scrollview

ScrollView properties

ScrollView properties

@klaus · 2017-09-08

B4ASnippetMenu

Change ACMenuItem Icon Color

A simple code to change the color of icons in ACMenuItem. Code can be used also to change another else BitmapDrawable

@Emme Developer · 2017-09-06

B4ASnippetAnimation

Mathemetics Pendulum

A not very useful animated pendulum.

@Erel · 2017-09-05

B4ASnippetAnimation

Animated Border

The CircularProgressBar class includes a generic animation code that you can use to create all kinds of animations.

@Erel · 2017-09-04