Need help in making a simple extension (return a list)

Open Source Development Extension Development
1

Hello Everyone,
I am new to extension development.

I am trying to create a block in which I would have set the text in the code editor and I want to return that text.

I tried many ways but I got compilation errors.

2

show your output

3

You may use return "TEXT"

4

These are my Codes in Code Editor.

import android.content.Context;
import android.util.Log;
import com.google.appinventor.components.annotations.;
import com.google.appinventor.components.runtime.;
import com.google.appinventor.components.common.ComponentCategory;

@DesignerComponent(version = 1, description = "This Extension was created with the AppyBuilder Code Editor.
" +
"Create your own here:
https://editor.appybuilder.com
",
category = ComponentCategory.EXTENSION,
nonVisible = true, iconName = "http://appyBuilder.com/extensions/icons/extension.png")
@SimpleObject(external = true)
public class TextUtilities extends AndroidNonvisibleComponent {
private ComponentContainer container;
/**
* @param container container, component will be placed in
*/
public TextUtilities(ComponentContainer container) {
super(container.$form());
this.container = container;
}

@SimpleFunction(description = "Text")
public void NewLine(String Line = " Text "){
return Line;
}

}

As you can notice in my Codes I have already added it

5

What are you trying to do with this block.

6

Hi @Chiru, You cannot return a value from void block.

2 Likes
7

One of these examples should help:

    @SimpleFunction(description = "Line")
    public String Line(String line){
     return line;
    }
  
    @SimpleFunction(description = "Text")
    public String Text(){
     return "Text";
    }
1 Like
8

try like this -

import android.content.Context;
import android.util.Log;
import com.google.appinventor.components.annotations.;
import com.google.appinventor.components.runtime.;
import com.google.appinventor.components.common.ComponentCategory;

@DesignerComponent(version = 1, description = "This Extension was created with the AppyBuilder Code Editor.
" +
"Create your own here:
https://editor.appybuilder.com
",
category = ComponentCategory.EXTENSION,
nonVisible = true, iconName = "http://appyBuilder.com/extensions/icons/extension.png 1")
@SimpleObject(external = true)
public class TextUtilities extends AndroidNonvisibleComponent {
private ComponentContainer container;
/**
* @param container container, component will be placed in
*/
public TextUtilities(ComponentContainer container) {
super(container.$form());
this.container = container;
}

@SimpleFunction(description = "Text")
public String NewLine(String Line = " Text "){
return Line;
}

}

here i have did it according to you

9

I actually didn't understand your Codes.
You are creating a string and returning another one.

10

so what you want to do ... in your code you are also trying to do same thing.

11

Hi, @Chiru, can you tell what you want briefly?

12

Hi @Alpha2020,
I added void by mistake :upside_down_face:

I want to make a block something like this

Image
Image948×125 45.2 KB

The Get Text Value should be a text which I will put the value in the Code Editor.

13

What is the text you want to return

14

The Text is the Value that I want to add in the Code Editor

15 
import android.content.Context;
import android.util.Log;
import com.google.appinventor.components.annotations.;
import com.google.appinventor.components.runtime.;
import com.google.appinventor.components.common.ComponentCategory;

@DesignerComponent(version = 1, description = "This Extension was created with the AppyBuilder Code Editor.
" +
"Create your own here:
https://editor.appybuilder.com
",
category = ComponentCategory.EXTENSION,
nonVisible = true, iconName = "http://appyBuilder.com/extensions/icons/extension.png 1")
@SimpleObject(external = true)
public class TextUtilities extends AndroidNonvisibleComponent {
private ComponentContainer container;
/**
* @param container container, component will be placed in
*/
public TextUtilities(ComponentContainer container) {
super(container.$form());
this.container = container;
}

    @SimpleFunction(description = "Here") /** Write the description on which I have written "Here"*/
public String NewLine(String Line) 
{
return "Text" /** Write the word you want to return in the "Text" */
}

Paste this in code editor

16

@Chiru, maybe this can help you

    @SimpleFunction(description = "")
    public String GetName(String name) {
        return name;
    }
1 Like
17

According to the codes,
The User has to input the value and he will get the same value again but I want to put a value in the Code Editor and return that value (Text)

The Block should appear something like this

Block
Block948×125 45.2 KB

18

Make it like this :

    @SimpleFunction(description = "")
    public String GetName() {
        return "Text";
    }

    @SimpleFunction(description = "")
    public int GetNumber() {
        return 1234;
    }
1 Like
19

But will it work becuse if we type GetName() and put that bracket empty, will it work?

20

good question, of course it will work, it will work 100%