Help me making this simple calculation in my extension

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, ,
#42

Could you show your code?Are you really sure that you haven’t use an old version of @hammerhai’s code:

1 Like
#43

no i used the new code

#44

i will just download again

#45

see this error what i got from new code
Buildfile: /projects/goldv2/appinventor-sources/appinventor/build.xml

extensions:

clean:

init:

common_CommonUtils:

init:

CommonUtils:

common_CommonVersion:

init:

CommonVersion:
[exec] Result: 128
[exec] Result: 128

CopyToRunLibDir:

components_AndroidRuntime:

init:

CommonConstants:
[javac] Compiling 6 source files to /projects/goldv2/appinventor-sources/appinventor/components/build/classes/CommonConstants
[javac] warning: [options] bootstrap class path not set in conjunction with -source 1.7
[javac] 1 warning

HtmlEntities:
[javac] Compiling 1 source file to /projects/goldv2/appinventor-sources/appinventor/components/build/classes/HtmlEntities
[javac] warning: [options] bootstrap class path not set in conjunction with -source 1.7
[javac] 1 warning

common_CommonVersion:

init:

CommonVersion:
[exec] Result: 128
[exec] Result: 128

AndroidRuntime:
[javac] Compiling 332 source files to /projects/goldv2/appinventor-sources/appinventor/components/build/classes/AndroidRuntime
[javac] warning: [options] bootstrap class path not set in conjunction with -source 1.7
[javac] /projects/goldv2/appinventor-sources/appinventor/components/src/com/appybuilder/contact2niraj/Maths_extension/Maths_extension.java:63: error: incompatible types: Object cannot be converted to String
[javac] for (String itemInList : listOfNumbers) {
[javac] ^
[javac] Note: Some input files use or override a deprecated API.
[javac] Note: Recompile with -Xlint:deprecation for details.
[javac] Note: Some input files use unchecked or unsafe operations.
[javac] Note: Recompile with -Xlint:unchecked for details.
[javac] 1 error
[javac] 1 warning

BUILD FAILED
/projects/goldv2/appinventor-sources/appinventor/build.xml:35: The following error occurred while executing this line:
/projects/goldv2/appinventor-sources/appinventor/build-common.xml:372: The following error occurred while executing this line:
/projects/goldv2/appinventor-sources/appinventor/components/build.xml:141: The following error occurred while executing this line:
/projects/goldv2/appinventor-sources/appinventor/build-common.xml:118: Compile failed; see the compiler error output for details.

Total time: 7 seconds
[jar] Building jar: /projects/goldv2/appinventor-sources/appinventor/components/build/HtmlEntities.jar

common_CommonVersion:

init:

CommonVersion:
[exec] Result: 128
[exec] Result: 128

AndroidRuntime:
[mkdir] Created dir: /projects/goldv2/appinventor-sources/appinventor/components/build/classes/AndroidRuntime
[javac] Compiling 332 source files to /projects/goldv2/appinventor-sources/appinventor/components/build/classes/AndroidRuntime
[javac] warning: [options] bootstrap class path not set in conjunction with -source 1.7
[javac] /projects/goldv2/appinventor-sources/appinventor/components/src/com/appybuilder/contact2niraj/Maths_extension/Maths_extension.java:63: error: incompatible types: Object cannot be converted to String
[javac] for (String itemInList : listOfNumbers) {
[javac] ^
[javac] Note: Some input files use or override a deprecated API.
[javac] Note: Recompile with -Xlint:deprecation for details.
[javac] Note: Some input files use unchecked or unsafe operations.
[javac] Note: Recompile with -Xlint:unchecked for details.
[javac] 1 error
[javac] 1 warning

BUILD FAILED
/projects/goldv2/appinventor-sources/appinventor/build.xml:35: The following error occurred while executing this line:
/projects/goldv2/appinventor-sources/appinventor/build-common.xml:372: The following error occurred while executing this line:
/projects/goldv2/appinventor-sources/appinventor/components/build.xml:141: The following error occurred while executing this line:
/projects/goldv2/appinventor-sources/appinventor/build-common.xml:118: Compile failed; see the compiler error output for details.

Total time: 7 seconds

#46

What about your code?

#47

i cant message you please message me

#48

please someone help me

#49

this is my code please tell

/**  ~~~~~
 * Created with the AppyBuilder Code Editor.
 * This is a template for basic Extension.
 * Modify this template to customize your extension.
 *
 * **** NOTE: DO NOT use a package name. 
 * **** The package name will be created for you automatically.
 * **** Adding a package name will cause a compile error
 */
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;
import java.lang.NumberFormatException;
import java.util.Arrays;
import java.util.List;
import com.google.appinventor.components.runtime.util.YailList;

@DesignerComponent(version = 1,  description = "This extension is to do some basic and advance calculations" + 
                   "Create your own here:<br><a href='https://editor.appybuilder.com' target='_blank'>https://editor.appybuilder.com</a><br>",
        category = ComponentCategory.EXTENSION,
        nonVisible = true,   iconName = "http://appyBuilder.com/extensions/icons/extension.png")
@SimpleObject(external = true)
public class Maths_extension extends AndroidNonvisibleComponent {
    private ComponentContainer container;
    /**
     * @param container container, component will be placed in
     */
    public Maths_extension(ComponentContainer container) {
        super(container.$form());
        this.container = container;
    }
  
    @SimpleFunction(description = "Number 1 + Number 2")
    public int Add (int Number1, int Number2) 
    {
        return Number1 + Number2; }
    
   @SimpleFunction(description = "Number 1 - Number 2")
    public int Substract (int Number1, int Number2) 
    {
        return Number1 + Number2; }
    
   @SimpleFunction(description = "Number 1 × Number 2")
    public int Multiply (int Number1, int Number2) 
    {
        return Number1 * Number2; }
  
  @SimpleFunction(description = "Number 1 ÷ Number 2")
    public int Divide (int Number1, int Number2) 
    {
        return Number1 / Number2; }
 
@SimpleFunction
public int LoopOverList(YailList list) {
  List listOfNumbers = Arrays.asList(list.toStringArray());
  int finalResult = 0;

  for (String itemInList : listOfNumbers) {
    try {
      finalResult += Integer.parseInt(itemInList);
    } catch(NumberFormatException nfe) {
      // Not a number
      nfe.printStackTrace();
    }
  }

  return finalResult;
}
}
#50

please tell what i am doing wrong

#51

This post was flagged by the community and is temporarily hidden.

#52

Stop spamming the community. If someone wants to help you they will. Don’t keep posting to get attention. You will get suspended if you continue.

3 Likes
#53

hello @Mohamed_Tamer, @Srrazmi, @hammerhai, @golumaths100, @Peter now i have completely changed my topic now i want to do a simple calculation like-
return x(variable) + 273.15

1 Like
#54

Please help me now!!

#55

How about using this?

public int Add (int Number1) { return Number1 + 273.14; }

Just a basic.
:thinking:

#56

i will try thank you

#57

If You Want Something Like This 1(24)+273.15=

@SimpleFunction(description = "")
public int Add (int x) { 
int b = 24;

return x*b + 273.14; 

}

Or If You Want Just x+273.15=

 @SimpleFunction(description = "")
    public int Add (int x) { 
    return x + 273.14; 

    }
1 Like
#58

i will try this also thank you @Srrazmi

#59

hi @Srrazmi i got an error coming in appybuilder

Buildfile: /projects/goldv2/appinventor-sources/appinventor/build.xml

extensions:

clean:
[delete] Deleting directory /projects/goldv2/appinventor-sources/appinventor/components/build

BUILD FAILED
/projects/goldv2/appinventor-sources/appinventor/build.xml:34: The following error [delete] Deleting directory /projects/goldv2/appinventor-sources/appinventor/components/reports

init:

common_CommonUtils:

init:

CommonUtils:

common_CommonVersion:

init:

CommonVersion:
[exec] Result: 128
[exec] Result: 128

CopyToRunLibDir:

components_AndroidRuntime:

init:
[mkdir] Created dir: /projects/goldv2/appinventor-sources/appinventor/build/components
[mkdir] Created dir: /projects/goldv2/appinventor-sources/appinventor/components/build
[mkdir] Created dir: /projects/goldv2/appinventor-sources/appinventor/components/build/classes
[mkdir] Created dir: /projects/goldv2/appinventor-sources/appinventor/components/reports
[mkdir] Created dir: /projects/goldv2/appinventor-sources/appinventor/components/reports/raw
[mkdir] Created dir: /projects/goldv2/appinventor-sources/appinventor/components/reports/html

CommonConstants:
[mkdir] Created dir: /projects/goldv2/appinventor-sources/appinventor/components/build/classes/CommonConstants
[javac] Compiling 6 source files to /projects/goldv2/appinventor-sources/appinventor/components/build/classes/CommonConstants
[javac] warning: [options] bootstrap class path not set in conjunction with -source 1.7
[javac] 1 warning
[javac] Creating empty /projects/goldv2/appinventor-sources/appinventor/components/build/classes/CommonConstants/com/google/appinventor/components/common/package-info.class
[jar] Building jar: /projects/goldv2/appinventor-sources/appinventor/build/components/CommonConstants.jar
[jar] Building jar: /projects/goldv2/appinventor-sources/appinventor/build/components/CommonConstants-gwt.jar

HtmlEntities:
[mkdir] Created dir: /projects/goldv2/appinventor-sources/appinventor/components/build/classes/HtmlEntities
[javac] Compiling 1 source file to /projects/goldv2/appinventor-sources/appinventor/components/build/classes/HtmlEntities
[javac] warning: [options] bootstrap class path not set in conjunction with -source 1.7
[javac] 1 warning
[jar] Building jar: /projects/goldv2/appinventor-sources/appinventor/components/build/HtmlEntities.jar

common_CommonVersion:

init:

CommonVersion:
[exec] Result: 128
[exec] Result: 128

AndroidRuntime:
[mkdir] Created dir: /projects/goldv2/appinventor-sources/appinventor/components/build/classes/AndroidRuntime
[javac] Compiling 332 source files to /projects/goldv2/appinventor-sources/appinventor/components/build/classes/AndroidRuntime
[javac] warning: [options] bootstrap class path not set in conjunction with -source 1.7
[javac] /projects/goldv2/appinventor-sources/appinventor/components/src/com/appybuilder/contact2niraj/Temperature_Converter/Temperature_Converter.java:37: error: incompatible types: possible lossy conversion from double to int
[javac] return x + 273.14;
[javac] ^
[javac] Note: Some input files use or override a deprecated API.
[javac] Note: Recompile with -Xlint:deprecation for details.
[javac] Note: Some input files use unchecked or unsafe operations.
[javac] Note: Recompile with -Xlint:unchecked for details.
[javac] 1 error
[javac] 1 warning

BUILD FAILED
/projects/goldv2/appinventor-sources/appinventor/build.xml:35: The following error occurred while executing this line:
/projects/goldv2/appinventor-sources/appinventor/build-common.xml:372: The following error occurred while executing this line:
/projects/goldv2/appinventor-sources/appinventor/components/build.xml:141: The following error occurred while executing this line:
/projects/goldv2/appinventor-sources/appinventor/build-common.xml:118: Compile failed; see the compiler error output for details.

Total time: 4 seconds

#60

Try To change From Int To float

1 Like
#61

The error says that you are trying to return an double from a method that is defined to return an int, as this value is a double ( int value will store 273 only and you will lose 0.15) :

Therefore the addition operater will return a double. You can try to set your method return type to double.

1 Like