My First extension - Binary converter

Extensions
13

I am trying to create converter extension which can convert binary to string and back again with other conversions like octal. Do you need this in the same extension or separate?

  • Same
  • Separate
  • Don't care

0 voters

14

Is this a question? Or you joking sorry but what if app inventor was made different website for designer and different for blocks? Sorry but it does not make any sense

15

as Italo already said

try to build an extension for something people need and App Inventor can't do with simple built in blocks.

see also the already available convert number block
http://ai2.appinventor.mit.edu/reference/blocks/math.html#convertnumber

Taifun
PS: please also do not mix your different threads... I moved your last post into the correct thread, which is this one... thank you...

2 Likes
16

I am trying to create conversions between STRING and BINARY by there is no block or that...

17

taken from here MIT App Inventor Math Blocks

Unbenannt
Unbenannt832×304 47.8 KB

can you provide an example of that string, which you like to convert into binary?
Taifun
PS: please keep the discussion in the community rather than sending my a PM... thank you...

1 Like
18

AI2 lacks a string to byte list converter for use by people coding for data communication.
Likewise for the opposite direction: byte list to string.

2 Likes
19

Interesting idea.
Unfortunately byte[] can't be returned from a method in app inventor but we have list as workaround.

20

By byte list, I am referring to the Bluetooth data streams typified in this Ble block from
http://iot.appinventor.mit.edu/#/bluetoothle/bluetoothleintro

  • BytesReceived – The BytesReceived event is run when one or more byte values are received from a connected Bluetooth device. Depending on the sign parameter of the last call to ReadBytes or RegisterForBytes for the given serviceUuid and characteristicUuid , the byteValues list will contain numbers ranging from -128 to 127 ( signed = true ) or 0 to 255 ( signed = false ). Parameters :
    • serviceUuid ( text ) — The unique identifier of the service passed in the read or register call.
    • characteristicUuid ( text ) — The unique identifier of the characteristic in the read or register call.
    • byteValues ( list ) — A list of values read from the device. The range of each value will depend on the sign flag previously specified in the call to read or register.

when BluetoothLE1 BytesReceived serviceUuid characteristicUuid byteValues do

2 Likes
21

Update 2.0

  • Added ability to convert text to binary & back again.

Thanks to @Italo for encouraging me, I didn't want to do it as it was a little difficult.

More

His encouragement helped :slightly_smiling_face:

Blocks

component_method (11)

  • Convert Text to binary code.

component_event (3)

  • Triggered when conversion is completed.

--
--

component_method (12)

  • Converts back Binary to regular text.

component_event (4)

  • Triggered when conversion is completed into text.

Downloads

Google Drive - ZIP file

Direct download - BinaryTool (6.8 KB)

Binary Tool AI2 Extension by Xoma (Kumaraswamy) is licensed under CC BY-ND 4.0

(My friend will scold me if the dint't provide link to license. :grimacing:)

Any suggestions or improvements are appreciated!

Thanks :slightly_smiling_face:

4 Likes
22

Suggestion: Add a when Error occurred event. It is better than throwing a YailRuntimeError for that.

1 Like
23

Hey, thanks for the suggestion, but do you know how to do it? I am still learning..
Also why you got that error?

24

For fast operations like this with one input and one output,
it would be more convenient to offer a block with input and output ports,
like a math block.

Also, offer sample input annd output examples in your tool tip docs.

1 Like
25

I didn't understand these lines..?

26

What @ABG mean is you shouldn't use void, instead you should return something directly.

I don't have any error. I am just suggesting. Use a try-catch statement to catch the exception error, and use an event block to handle it.

Example:

@SimpleEvent(description = "Raises when error occurred.")
    public void ErrorOccurred(String error) {
        EventDispatcher.dispatchEvent(this, "ErrorOccurred", error);
    }

@SimpleFunction(description = "Integer addition")
    public int Addition(int a, int b){
        try {
              return a + b;
        } catch (Exception e) {
              ErrorOccurred(e.getMessage());
              return 0;
        }
    }
1 Like
27

Its throws and error that "catch" without "try"... But the code is all correct

28

it means you did not used try statement

1 Like
29

No! I am used it...

30

Ok, lets not go offtopic here... I will learn it later.

31

this maybe help you Java Exceptions (Try...Catch)

as you wish :upside_down_face:

1 Like
32

This extension is discontinued :