Many Runtime Errors after placing Extension

[Arne Mailand]

Hey guys,

I just successfully built my first extension (huurayyy). Here is the Source code which I used:

package com.google.appinventor.components.runtime;

import com.google.appinventor.components.annotations.DesignerComponent;

import com.google.appinventor.components.annotations.DesignerProperty;

import com.google.appinventor.components.annotations.PropertyCategory;

import com.google.appinventor.components.annotations.SimpleEvent;

import com.google.appinventor.components.annotations.SimpleFunction;

import com.google.appinventor.components.annotations.SimpleObject;

import com.google.appinventor.components.annotations.SimpleProperty;

import com.google.appinventor.components.annotations.UsesPermissions;

import com.google.appinventor.components.common.ComponentCategory;

import com.google.appinventor.components.common.PropertyTypeConstants;

import com.google.appinventor.components.common.YaVersion;

import com.google.appinventor.components.runtime.util.AsynchUtil;

import com.google.appinventor.components.runtime.util.ErrorMessages;

import com.google.appinventor.components.runtime.util.FileUtil;

import com.google.appinventor.components.runtime.Form;

import com.google.appinventor.components.runtime.ReplForm;

import android.app.Activity;

import android.content.Context;

import android.os.Environment;

import android.util.Log;

import java.io.BufferedInputStream;

import java.io.BufferedOutputStream;

import java.io.File;

import java.io.FileInputStream;

import java.io.FileNotFoundException;

import java.io.IOException;

import java.net.Socket;

@DesignerComponent(version = YaVersion.FILE_COMPONENT_VERSION,

        description = "Meine erste Extension",

        category = ComponentCategory.EXTENSION,

        nonVisible = true,

        iconName = "images/extension.png")

@SimpleObject(external = true)

@UsesPermissions(permissionNames = "android.permission.WRITE_EXTERNAL_STORAGE, android.permission.INTERNET, android.permission.READ_EXTERNAL_STORAGE")

public class Filet extends AndroidNonvisibleComponent implements Component{

    public Filet(ComponentContainer container){

        super(container.$form());

    }

@SimpleFunction(description = "Funktionsbeschreibung hier")

    public void Filet2(){

        Socket socket;

        File file = new File(Environment.getExternalStorageDirectory(), "bild.jpg");

        byte[] bytes = new byte[(int) file.length()];

        try {

            socket = new Socket("192.168.178.32", 80);

            BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));

            BufferedOutputStream bos = new BufferedOutputStream(socket.getOutputStream());

            bis.read(bytes, 0, bytes.length);

            bos.write(bytes, 0, bytes.length);

            bos.flush();

            socket.close();

        } catch (FileNotFoundException e) {

            e.printStackTrace();

        } catch (IOException e) {

            e.printStackTrace();

        } finally {

        }

    }

As soon as I place the extension in the designer view while my companion is connected, I get this Runtime Error Message on the Blocks View:

Error from Companion: java.lang.RuntimeException: invalid syntax in eval form: :1:1510: caught exception in inliner for # - java.lang.RuntimeException: no such class: com.google.appinventor.components.runtime.Filet gnu.bytecode.ObjectType.getReflectClass(ObjectType.java:179) 

gnu.bytecode.ClassType.getModifiers(ClassType.java:103) 

gnu.bytecode.ClassType.isInterface(ClassType.java:471) 

gnu.expr.InlineCalls.checkType(InlineCalls.java:56) 

gnu.expr.InlineCalls.visit(InlineCalls.java:49) 

gnu.expr.InlineCalls.visitSetExpValue(InlineCalls.java:363) 

gnu.expr.InlineCalls.visitSetExpValue(InlineCalls.java:28) 

gnu.expr.ExpVisitor.visitSetExp(ExpVisitor.java:114) 

gnu.expr.InlineCalls.visitSetExp(InlineCalls.java:369) 

gnu.expr.InlineCalls.visitSetExp(InlineCalls.java:28) 

gnu.expr.SetExp.visit(SetExp.java:406) 

gnu.expr.ExpVisitor.visit(ExpVisitor.java:55) 

gnu.expr.InlineCalls.visit(InlineCalls.java:46) 

gnu.expr.InlineCalls.visitBeginExp(InlineCalls.java:272) 

gnu.expr.InlineCalls.visitBeginExp(InlineCalls.java:28) 

gnu.expr.BeginExp.visit(BeginExp.java:156) 

gnu.expr.ExpVisitor.visit(ExpVisitor.java:51) 

gnu.expr.InlineCalls.visit(InlineCalls.java:46) 

gnu.expr.InlineCalls.visitBeginExp(InlineCalls.java:272) 

gnu.expr.InlineCalls.visitBeginExp(InlineCalls.java:28) 

gnu.expr.BeginExp.visit(BeginExp.java:156) 

gnu.expr.ExpVisitor.visit(ExpVisitor.java:51) 

gnu.expr.InlineCalls.visit(InlineCalls.java:46) 

gnu.expr.InlineCalls.visitLetExp(InlineCalls.java:317)

gnu.expr.InlineCalls.visitLetExp(InlineCalls.java:28)

gnu.expr.LetExp.visit(LetExp.java:207)

gnu.expr.ExpVisitor.visit(ExpVisitor.java:51)

gnu.expr.InlineCalls.visit(InlineCalls.java:46)

gnu.expr.InlineCalls.visit(InlineCalls.java:28)

gnu.expr.LambdaExp.visitChildrenOnly(LambdaExp.java:1664)

gnu.expr.LambdaExp.visitChildren(LambdaExp.java:1651)

gnu.expr.InlineCalls.visitScopeExp(InlineCalls.java:279)

gnu.expr.InlineCalls.visitLambdaExp(InlineCalls.java:349)

gnu.expr.InlineCalls.visitLambdaExp(InlineCalls.java:28)

gnu.expr.LambdaExp.visit(LambdaExp.java:1640)

gnu.expr.ExpVisitor.visit(ExpVisitor.java:55)

gnu.expr.InlineCalls.visit(InlineCalls.java:46) 

gnu.expr.InlineCalls.visit(InlineCalls.java:28) 

gnu.expr.ExpVisitor.visitAndUpdate(ExpVisitor.java:161) 

gnu.expr.ExpVisitor.visitExps(ExpVisitor.java:175) 

gnu.expr.ApplyExp.visitArgs(ApplyExp.java:416) 

gnu.kawa.reflect.CompileInvoke.validateApplyInvoke(CompileInvoke.java:23) 

java.lang.reflect.Method.invokeNative(Native Method) java.lang.reflect.Method.invoke(Method.java:511) 

gnu.expr.InlineCalls.maybeInline(InlineCalls.java:467) 

gnu.expr.QuoteExp.validateApply(QuoteExp.java:150) 

gnu.expr.ReferenceExp.validateApply(ReferenceExp.java:191) 

gnu.kawa.functions.CompilationHelpers.validateApplyToArgs(CompilationHelpers.java:66) 

java.lang.reflect.Method.invokeNative(Native Method) java.lang.reflect.Method.invoke(Method.java:511) 

gnu.expr.InlineCalls.maybeInline(InlineCalls.java:467) 

gnu.expr.QuoteExp.validateApply(QuoteExp.java:150) 

gnu.expr.ReferenceExp.validateApply(ReferenceExp.java:191) 

gnu.expr.InlineCalls.visitApplyExp(InlineCalls.java:119) 

gnu.expr.InlineCalls.visitApplyExp(InlineCalls.java:28) 

gnu.expr.ApplyExp.visit(ApplyExp.java:411) 

gnu.expr.ExpVisitor.visit(ExpVisitor.java:55) 

gnu.expr.InlineCalls.visit(InlineCalls.java:46) 

gnu.expr.QuoteExp.validateApply(QuoteExp.java:162) 

gnu.expr.ReferenceExp.validateApply(ReferenceExp.java:191) 

gnu.kawa.functions.CompilationHelpers.validateApplyToArgs(CompilationHelpers.java:66) 

java.lang.reflect.Method.invokeNative(Native Method) java.lang.reflect.Method.invoke(Method.java:511) 

gnu.expr.InlineCalls.maybeInline(InlineCalls.java:467) 

gnu.expr.QuoteExp.validateApply(QuoteExp.java:150) 

gnu.expr.ReferenceExp.validateApply(ReferenceExp.java:191) 

gnu.expr.InlineCalls.visitApplyExp(InlineCalls.java:119) 

gnu.expr.InlineCalls.visitApplyExp(InlineCalls.java:28) 

gnu.expr.ApplyExp.visit(ApplyExp.java:411) 

gnu.expr.ExpVisitor.visit(ExpVisitor.java:51) 

gnu.expr.InlineCalls.visit(InlineCalls.java:46) 

gnu.expr.InlineCalls.visitBeginExp(InlineCalls.java:272) 

gnu.expr.InlineCalls.visitBeginExp(InlineCalls.java:28) 

gnu.expr.BeginExp.visit(BeginExp.java:156) 

gnu.expr.ExpVisitor.visit(ExpVisitor.java:51) 

gnu.expr.InlineCalls.visit(InlineCalls.java:46) 

gnu.expr.InlineCalls.visit(InlineCalls.java:28) 

gnu.expr.LambdaExp.visitChildrenOnly(LambdaExp.java:1664) 

gnu.expr.LambdaExp.visitChildren(LambdaExp.java:1651) 

gnu.expr.InlineCalls.visitScopeExp(InlineCalls.java:279) 

gnu.expr.InlineCalls.visitLambdaExp(InlineCalls.java:349) 

gnu.expr.InlineCalls.visitLambdaExp(InlineCalls.java:28) 

gnu.expr.ExpVisitor.visitModuleExp(ExpVisitor.java:103) 

gnu.expr.ModuleExp.visit(ModuleExp.java:482) 

gnu.expr.ExpVisitor.visit(ExpVisitor.java:51) 

gnu.expr.InlineCalls.visit(InlineCalls.java:46) 

gnu.expr.InlineCalls.inlineCalls(InlineCalls.java:33) 

gnu.expr.Compilation.walkModule(Compilation.java:994) 

gnu.expr.Compilation.process(Compilation.java:1965) 

gnu.expr.ModuleInfo.loadByStages(ModuleInfo.java:330) 

gnu.expr.ModuleExp.evalModule1(ModuleExp.java:238) 

gnu.expr.ModuleExp.evalModule(ModuleExp.java:198) 

gnu.expr.Language.eval(Language.java:943) 

gnu.expr.Language.eval(Language.java:883) 

gnu.expr.Language.eval(Language.java:865) 

com.google.appinventor.components.runtime.util.AppInvHTTPD.serve(AppInvHTTPD.java:191) 

com.google.appinventor.components.runtime.util.NanoHTTPD$HTTPSession.run(NanoHTTPD.java:476) 

java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1076) 

java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:569) 

java.lang.Thread.run(Thread.java:856)

I am absoluetely. overstrained with these errors. Can anybody help me out?

I guess it has something to do with the import files... right? To be honest, I couldn't comprehend at this point which files have to get imported. I just copied these lines from the built in web and file component.

I really appreciate any help. Thank you in advance

Arne

[Evan Patton]

This is a known issue. After loading the extension into the companion, you will need to restart and reconnect the companion so that it can properly link your extension code on the device.

Evan

[Arne Mailand]

Thanks, Evan. I am really glad to hear that! What exactly does restart mean? I reopended the companion app a few times, also reconnected with AI. Do I have to reboot the phone?

[Arne Mailand]

Oh well, I just restarted my phone and I am still getting the same runtime error :-(

Apart from the first line

java.lang.RuntimeException: invalid syntax in eval form: :1:1510

all lines are the same. I doubt if this is the known issue... Any ideas what could cause these errors?

I read that network connections have to be established in different threads. I also experienced that in Android Studio. Could that be causing the errors maybe?

[Arne Mailand]

Please help me. I need to get my extension working for my graduation thesis.

[Arne Mailand]

Update:

The same error occurs, when I place the modified (just name-changed), original built-in component from the tutorial as an extension(AltCamera) ! So I assume that my ant builder is maybe doing something wrong.

Also, when I try to compile on the online ai2 platform, I will get a compiler error if that extension component is part of the non-visible-components (design view). The component does not have to be used to cause the compiler error, just dragging and placing it in the designer view is sufficient to let the error occur during compiling.

What is going wrong during the extension building process?

App Inventor is unable to compile this project. 

The compiler error output was 

________Preparing application icon

________Creating animation xml

________Determining BR names and actions

________Generating manifest file

________Attaching native libraries

________Attaching component assets

________Compiling source files

(compiling appinventor/ai_armai123mai/Test1/Screen1.yail to appinventor.ai_armai123mai.Test1.Screen1)

(compiling /tmp/runtime8872982264086122834.scm to com.google.youngandroid.runtime)

Kawa compile time: 1.83 seconds

________Invoking DX

YAIL compiler - DX execution failed.

By the way, all elements are shown properly in the blocks view.

[Arne Mailand]

I attached the compiled .aix file here.

[Arne Mailand]

By the way, I don't have git or phantomjs installed. Could this be related to the errors?

[Arne Mailand]

Also, I noticed that all built .aix files have the file size of 1075kb +-1kb. That seems a bit large to me. All extensions i got so farm from other developers had less than 100kb.

I am using Apache Ant 1.9.7

Java 1.8.0_101

[Arne Mailand]

Allright, I think I got it:

I changed the package name. This reduced the .aix file size from 1075kb to 4kb and app compiling seems to work now. Also, I don't get any runtime errors in the blocks view from just placing the component anymore (I should have better realized the first sentence in Chapter 4... ;)).

Tadaaa