CODEWITHSUNDEEP
javascriptjavagwtjsni
Abdessamad Doughri
Abdessamad Doughri

Reputation: 1355

Passing JavaScript values into Java GWT

I need to return a value from JSNI GWT method like so:

    public native int connect(String macAdress) /*-{

    var result = 0;
    $wnd.bluetoothSerial.connect(macAdress, function() {
        $wnd.console.log("connect success");
        result = 1 ;
    }, function() {
        $wnd.console.log("Failed connect");
    });
    return result;
}-*/;

form some reasons it return 0 even if the connection successful. Apparently this variable keep the default value, Any ideas?

Upvotes: 0

Views: 392

Answers (1)

Christian Kuetbach
Christian Kuetbach

Reputation: 16060

You are calling an asychronous method and can't return a value that way.

You will need to pass an Callback into your native code:

See Pass Java Callback Function to JSNI Method?

Upvotes: 3

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