EditorUtility.SaveFilePanelInProject  

static function SaveFilePanelInProject (title : String, defaultName : String, extension : String, message : String) : String

Description

Displays the "save file" dialog in the Assets folder of the project and returns the selected path name.

See Also: SaveFilePanel function.

Save File panel in project.

// Opens a file selection dialog for a PNG file and saves a selected texture to the file.

import System.IO;

@MenuItem("Examples/Save Texture to file")
static function Apply () {
    var texture : Texture2D = Selection.activeObject as Texture2D;

    if(!texture) {
        EditorUtility.DisplayDialog("Select Texture",
                        "You Must Select a Texture first!",
                        "Ok");
        return;
    }

    var path = EditorUtility.SaveFilePanelInProject("Save texture as PNG",
                            texture.name + ".png",
                            "png",
                            "Please enter a file name to save the texture to");
    if(path.Length != 0) {
        // Convert the texture to a format compatible with EncodeToPNG
        if(texture.format != TextureFormat.ARGB32 && texture.format != TextureFormat.RGB24) {
            var newTexture = Texture2D(texture.width, texture.height);
            newTexture.SetPixels(texture.GetPixels(0),0);
            texture = newTexture;
        }
        var pngData = texture.EncodeToPNG();
        if(pngData != null) {
            File.WriteAllBytes(path, pngData);
            // As we are saving to the asset folder, tell Unity to scan for modified or new assets
            AssetDatabase.Refresh();
        }
    }
}