I am a total beginner in app inventor and i keep getting this message:
"This block needs a value block connected to its socket" when I try to make a label block write something.
Does anyone know why ?..
I have a problem too. You wrote it 2 years ago, but I just started. Anyway, what you need to do is choose logic from the top and add true to the end, so it will be like this
If you type set label 1.visiable to it gives an error
You need to add set label 1.visiable to true, if the end is sharp, you can double click and open it.
If a picture is added, I will add it below.enter image description here
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I recently noticed the following popup message ("6 occurrences replaced") in Qt Creator (3.4.2).
I like its style and want to use it in my own application. But how is it done? Is this a particular widget or what else? Can someone point me in the right direction.
You could create your own window with round corners like that with text in the middle paid show it when you want too make the window so it takes a parameter text and you can add different text each time and show
I am trying to use TinyDB in order to store a value on one screen and display it on another. On the second screen, I want to add 1 to the number stored with TinyDB on the first screen. However, when I try to do this, nothing happens. What am I doing wrong?
Here's my code for the two screens.
Screen1
Screen2
You already loaded the available computers in Screen2.Initialize into label computersAvail.Text. Therefore in the Button1.Click event first add 1 like this
set computersAvail.Text to get computersAvail.Text + 1
and to store the updated available computers in TinyDB then use the following block
TinyDB.StoreValue "Computers"
get computersAvail.Text
btw. it helps to first do the tutorials to learn the basics of App Inventor...
also see this link for "the lost souls"...
in a List view I want a particular control (textbox) to have a red background color if it has a certain value. I have tried the following:
Click on the textbox then click the Data icon in the context sensitive controls that appear. I can then see that the name of the control is First_NameTextBox. I then click anywhere on the List view and click the Actions icon in the context controls that appear to the right of the view. I select "On Current". I then create two steps that should be executed whenever a new record is activated:
If [First_NameTextBox] = "somevalue" Then
SetProperty
Control Name [First_NameTextBox]
Property BackColor
Value #FF0000
End If
However, this turns the textbox red no matter what the value in First_NameTextBox is. How do I reference the CURRENT value of the textbox?
Conditional formatting based on a field value is not available for the List View in a Web App.
If you've built web pages (with or without a templating engine), the design limitations of Access can be frustrating.
Another kind of frustration comes from moving a form in Access from the native Access environment to a browser-based display.
I've felt the first kind of frustration, but so far I've avoided the second kind. I keep MS Access and HTML-rendered forms far away from each other.
Conditional Formatting in the List View of Access Web Apps is Available its just way harder than it should be.
Input "If Statement" under the "Current Macro" by clicking outside any text box or label then traveling to the top right of the view and you will see the Lightning bolt which allows two options, "On Load" and "On Current".
SELECT ON CURRENT
Don't forget You will need to set the control back to the original color by using the else. (also, for some reason I have to flip the Colors so where you would think red would go, Put White.
Example:
IF = "" True Then
White
Else
Red
END IF /DONT ASK ME WHY!
Summary: your Code is Sound, Just input it under the Views Current Macro Location
This is my first post, i spent DAYS looking for this information and found in the deep google somewhere so i hope this helps you.
I'm new to ApplescriptObjC as you'll probably see if you keep reading. I was wondering how to get constant feedback from a slider so that as soon as its value is 1 it runs script A and as soon as its value is changed to 0, it runs script B.
I know you can have actions for buttons like:
on buttonClicked_(sender)
do action
end buttonClicked_
But how can I have a one that constantly checks for a change in the slider's value and does the appropriate action? Is it similar to connecting a slider to a text box with the getStringValueFrom() thing?
Any help would be appreciated. Thanks :)
Found out how!
turns out on action_(sender) will work for sliders as well. They send the signal every time the item is clicked on and released whether a change exists or not. Then its a simple matter of an if statement to run two different series of actions depending on the value the slider was set to.
I am a beginner so please take it easy. First some history, I am trying to modify a flash movie (not created by me) that has 4 images in it.
I have to now add 2 more images (pic5.png and pic6.jpg) to the "slideshow" as shown in the attachment, I have added the 2 images to the library. The problem I am having (as I understand, I may be incorrect) is that _root.count = 4 causes the movie to jump back to the first image after it displays the 4th one which does not display the 5th & 6th image.
My question, how do I edit the value of _root.count to 6, so that it will show all the 6 images. Additionally how do I create a hyperlink on each image.
Please can someone guide me.
Many thanks.
Looking at your screen shot, Layer 2 (which contains the slideshow movieclip) is locked. If you unlock the layer by clicking on the padlock icon you should then be able to edit the script.
To edit the script double-click on the script in the Movie Explorer panel and the Actions panel should open. You can edit the script here.
The second part of your question - how to create a hyperlink - is very broad and there are many different ways to approach it. The most elegant approach would depend on how your project was structured.
The simplest way might be to define a variable to hold the path to the current image and add another onClipEvent handler.
So in the existing onLoad you would add…
this.path_to_image = http://your-domain.com/images/your-first-big-image.jpg;
Then add the new event handler
onClipEvent(mouseUp){
getURL (this.path_to_image);
}
You would then have to update the path_to_image variable whenever the image changed.
slideshow.path_to_image = http://your-domain.com/images/your-next-big-image.jpg;