DroidScript Hello World Example

February 21, 2018

The 'Hello World' Project is the first app you will see in DroidScript.
It creates an image and a button. And if you press the button, a "Hello World!" popup appears and the phone is vibrating.
This is a very basic demonstration of how easy DroidScript can be used:

- create the main app-layout.
- add controls or more layouts to it
- show the layout on screen

This is the basic concept of how DroidScript works. Try it out yourself: Download DroidScript

//Called when application is started.
function OnStart() {
    //Create a layout with objects vertically centered.
    lay = app.CreateLayout("linear ", "VCenter,FillXY ");

    //Create image 1/5 of screen width and correct aspect ratio.
    img = app.CreateImage("Img/Hello World.png ", 0.2, -1);
    lay.AddChild(img);

    //Create a button 1/3 of screen width and 1/10 screen height.
    btn = app.CreateButton("Press Me ", 0.3, 0.1);
    btn.SetMargins(0, 0.05, 0, 0);
    lay.AddChild(btn);

    //Set function to call when button pressed.
    btn.SetOnTouch(btn_OnTouch);

    //Add layout to app. 
    app.AddLayout(lay);
}

//Called when user touches our button.
function btn_OnTouch() {
    //Show a popup message.
    app.ShowPopup("Hello World! ");

    //Vibrate phone with a pattern (in milliseconds).
    //pause,vibrate,pause,vibrate...
    app.Vibrate("0,100,30,100,50,300 ");
}