activity

ListView 控件是一个非常强大的控件. 它可以以非常雅致的方式来显示长的或者短的列表. 建立一个ListView 非常简单: B4X: Sub Globals Dim ListView1 As ListView End Sub Sub Activity_Create(FirstTime As Boolean) ListView1.Initialize("ListView1") For i = 1 To 300 ListView1.AddSingleLine("Item #" & i) Next...

Today at 1:40 PM i came across your post on qr code scanner but when i try to implement the code in my project and execute it won't show anything rather it will log message "*** gniytvb: B4XPage_Appear [gniytvb]" and "Result has arrived" and "** Activity (main) Pause event (activity is not...

Hi I have a combox on my main screen, but I cannot get the combo to fire the TextChanged event, I've done a mock up of my screen as a demo, code below, am I missing something? B4X: Sub Process_Globals End Sub Sub Globals Private cboLocation As B4XComboBox End Sub Sub...

Hello everyone, This is my first experience in B4A. I'm trying to write a code that sends an email. This is the code I wrote: Sub Process_Globals 'These global variables will be declared once when the application starts. 'These variables can be accessed from all modules. Private xui As XUI...

Hello everybody. I've successfully used @Johan Schoeman excellent library for a while. But I'm having an unusual problem when trying to decode a QRCode in particular (This one is attached). The reading through the scanner is perfect and brings the information perfectly. But when I try to decode...

Hello everyone, i am having a problem with inline java and javaobject. I have a co-developer who knows how to code in java, my problem is i don't know how to pass the code to b4a. i can't get the return value of the java code. below is the inline java code: B4X: #if java import...

Hi, I want to do some Jobs on start of an App. Since there are user interactions and I have to handle with MsgBoxAsync and Wait For, there are Services to start and so on, it's quite difficult to keep the order of the jobs. Especially because anything runs in Activity_Create, and some jobs...

i have a calculator like single activity app, user fills some the data and it calculate, app works fine. but when we switch to some other app and back to my app, all data like are reset/erased from the textbox, colors of controls are reset etc. like the activity is recreated. how do i maintain...

I'm totally confused it's changed from a year ago. I'm using the simple_example_B4XDrawer example. I have added a new view in the designer and called it "2". So I have two views in the designer, 1 and 2. 1 has the simple example menu and on the other I have a button and webview. I want to load...

If think this is a bug. I am building using B4A 10.0, Android 9, Samsung Galaxy Tab Active2, portrait orientation Summary This line of code causes the program to hang. It may process a few more lines of UI related code, but it will eventually freeze. For this example, Result = true. Bad code...

This is an example of a Tick-Tack-Toe game. This game demonstrates two concepts. The first is an example of working with multiple views without duplicating code. In this case it is 9 buttons, however similar code can easily handle any number of views. The second concept is the handling of...

I found it more convenient to switch layouts by hiding and showing panels, which support all the views. That way, display is instant between layouts. Before displaying a layout, I test if the panel has been intialized, and if not, then I add the layout to activity. That worked just fine, until...

BCToast is a custom "toast" message implementation based on BCTextEngine: https://www.b4x.com/android/forum/t...-bbcode-parser-rich-text-view.106207/#content It requires BCTextEngine v1.65+. Note that unlike B4A built-in toast message feature, this toast message can only be displayed from...

When using full screen mode with the following code in Activity_Create: B4X: Sub GetRealSize As LayoutValues Dim lv As LayoutValues Dim p As Phone If p.SdkVersion >= 17 Then Dim ctxt As JavaObject ctxt.InitializeContext Dim display As JavaObject =...

Hi, I`m connecting B4A to a BT selfie stick and monitoring the key presses (code shown below), but with several keys it returns the correct value but then followed by 5 zero`s. This is making my life hard to detect the keypress, would appreciate any idea`s to help this? Here is the log: ***...

Hi all, I'm try to manage a display problem about a B4X View used as label for a description text (see attached image "app_screenshot"). A POSSIBLE SOLUTION A cool solution that I found is (XUI Scrolling Label by @Erel). B4A Library - [B4X] [XUI] Scrolling Label A custom view with a label...

1. Register with http://www.display.io/en/, create a new app and an interstitial ad unit. 2. Download their sdk and copy it to the additional libraries folder. 3. Add to manifest editor: B4X: AddPermission(android.permission.INTERNET) AddPermission(android.permission.ACCESS_NETWORK_STATE)...

1. Register with Tappx and get an app key: https://www.tappx.com 2. Download their AAR library and copy it to the additional libraries folder: https://repo1.maven.org/maven2/com/tappx/sdk/android/tappx-sdk/3.1.3/ 3. Add dependencies: B4X: #AdditionalJar: tappx-sdk-3.0.9.aar #AdditionalJar...

Hi there, i have active local WLAN and try to open by webview a local (LAN) website like: http://192.168.20.226/test/page in chrome browser it works, but inB4x App via webview it will not load. any idea? B4X: Sub Activity_Create(FirstTime As Boolean) Activity.LoadLayout("Layout")...

Hello, I'd really like to use this library - but i got these mistakes when i include the seekbar as customview in the layout: B4X: Sub Globals 'These global variables will be redeclared each time the activity is created. 'These variables can only be accessed from this module. Dim...