Checkboxes to be checked based on the file and stored in the file in as3

Question

I have 5 checkboxes, 1 button, and a text file. In my text file the values are stored like this:

1,0,0,0,1

When I run the program, the first and last checkboxes need to be checked and the others need to be unchecked.

If I check or uncheck any of the checkboxes then click the save button, the changed values have to be updated in text file. How can i achieve this?

Answer 1

var filename:String = "checkboxes.txt";
var checkboxes:Vector.<CheckBox> = new <CheckBox>[checkbox1, checkbox2, etc];

function load():void {
    // read text file
    var file:File = File.applicationStorageDirectory.resolvePath(filename);
    if(!file.exists)
        return;
    var fileStream:FileStream = new FileStream();
    fileStream.open(file, FileMode.READ);
    var text:String = fileStream.readUTFBytes(fileStream.bytesAvailable);
    fileStream.close();

    // decode text values to checkboxes
    var values:Array = text.split(",");
    for(var i:int = 0; i < values.length; i++){
        var checked:Boolean = values[i] == "1";
        checkboxes[i].selected = checked;
    }
}

function save():void {
    // encode checkboxes to text
    var values:Array = [];
    for(var i:int = 0; i < checkboxes.length; i++){
        values.push(int(checkboxes[i].selected));
    }
    var text:String = values.join(",");

    // write to file
    var file:File = File.applicationStorageDirectory.resolvePath(filename);
    var fileStream:FileStream = new FileStream();
    fileStream.open(file, FileMode.WRITE);
    fileStream.writeUTFBytes(text);
    fileStream.close();
}