CODEWITHSUNDEEP
androidtrigger.io
Omar
Omar

Reputation: 40182

Trigger.io barcode.scan throwing Java error

Using Trigger.io's barcode api in an application that only contains boilerplate HTML and the following JavaScript:

forge.barcode.scan(function (value) {
    alert("You scanned: "+value);
});

I get the following error in the log:

Forge Java error: RuntimeException: Can't create handler inside thread that has not called Looper.prepare()

Full error entry:

[INFO] D/Forge ( 1109): Returned: {"content":{"message":"Forge Java error: RuntimeException: Can't create handler inside thread that has not called Looper.prepare()","type":"UNEXPECTED_FAILURE","subtype":null,"full_error":"java.lang.RuntimeException: Can't create handler inside thread that has not called Looper.prepare() at android.os.Handler.(Handler.java:197) at android.os.Handler.(Handler.java:111) at android.app.Dialog.(Dialog.java:107) at android.app.AlertDialog.(AlertDialog.java:114) at android.app.AlertDialog$Builder.create(AlertDialog.java:931) at android.app.AlertDialog$Builder.show(AlertDialog.java:950) at io.trigger.forge.android.modules.barcode.API.scan(API.java:68) at java.lang.reflect.Method.invokeNative(Native Method) at java.lang.reflect.Method.invoke(Method.java:511) at io.trigger.forge.android.core.ForgeApp.callJavaFromJavaScript(ForgeApp.java:247) at io.trigger.forge.android.core.ForgeJSBridge$1.run(ForgeJSBridge.java:17) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1080) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:573) at java.lang.Thread.run(Thread.java:856)\n"},"callid":"35E46BC5-1C17-4354-B09B-BE67B5FCD513","status":"error"}

Update:

Below is my code:

File config.json

{
    "config_version": "2",
    "name": "Scan to Web",
    "author": "[email protected]",
    "version": "0.1",
    "platform_version": "v1.4",
    "description": "An empty app created by default",
    "modules": {
        "logging": {
            "level": "DEBUG"
        },
        "barcode": true,
        "contact": true,
        "file": true,
        "is": true,
        "media": true,
        "prefs": true,
        "request": {
            "permissions": ["http://*/*", "https://*/*"]
        },
        "tools": true,
        "reload": true
    }
}

File default.js

forge.barcode.scan(function (value) {
    alert("You scanned: "+value);
});

File index.html

<!DOCTYPE html>
<html>
    <head>
    <title>Hello World!</title>
    <link rel="stylesheet" href="css/jquery.mobile-1.1.0.min.css" />
    <script src="js/jquery-1.7.1.min.js"></script>
    <script src="js/jquery.mobile-1.1.0.min.js"></script>
    <script type="text/javascript" src="js/main.js"></script>
    <script type="text/javascript" src="js/default.js"></script>
</head>
<body>

    <p>Hello world!</p>

</body>
</html>

Upvotes: 1

Views: 238

Answers (3)

James Brady
James Brady

Reputation: 27492

There was a threading problem in Trigger.io version v1.4.26 - it's fixed in v1.4.27 upwards.

Sorry for the inconvenience!

Upvotes: 1

Adam Zajdzik
Adam Zajdzik

Reputation: 66

Try one of two things:

1) Turn Reload module on in your app configuration. I know it sounds weird or stupid, but trust me, it should resolve your problem for now. I had very similar issue with Request module when Reload was off.

2) Change "platform_version" in your src/config.json from "v1.4" to "v1.4.25". I think last platform version is a bit broken.

Upvotes: 3

Eng.Fouad
Eng.Fouad

Reputation: 117597

This exception is usually raised if you are calling a UI-related code from a thread other than the UI-thread. If this is Java I would use:

activity.runOnUiThread(new Runnable()
{
    @Override
    public void run()
    {
        // place your code here
    }
});

Upvotes: 0

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