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How do you set focus in Flash ActionScript 3 (AS3)?
Answer
Use the stage focus method:
stage.focus = object;
Source Code
import flash.text.TextField;
import flash.text.TextFieldType;
import fl.controls.Button;
var exampleTextField:TextField = new TextField();
exampleTextField.width = 100;
exampleTextField.height = 20;
exampleTextField.x = 50;
exampleTextField.y = 20;
exampleTextField.type = TextFieldType.INPUT;
exampleTextField.border = true;
addChild(exampleTextField);
var focusInButton:Button = new Button();
focusInButton.label = "Focus";
focusInButton.width = 80;
focusInButton.height = 20;
focusInButton.x = 10;
focusInButton.y = 70;
addChild(focusInButton);
var focusOutButton:Button = new Button();
focusOutButton.label = "Focus Out";
focusOutButton.width = 80;
focusOutButton.height = 20;
focusOutButton.x = 110;
focusOutButton.y = 70;
addChild(focusOutButton);
focusInButton.addEventListener(MouseEvent.MOUSE_UP, function(){
stage.focus = exampleTextField;
});
focusOutButton.addEventListener(MouseEvent.MOUSE_UP, function(){
stage.focus = null;
});
