EditorUtility.OpenFilePanel 打开文件面板

// Opens a file selection dialog for a PNG file and overwrites any
// selected texture with the contents.
//打开一个PNG文件选择对话框，并覆盖任何选择的内容纹理
class EditorUtilityOpenFilePanel {
	@MenuItem("Examples/Overwrite Texture")
	static function Apply () {
		var texture : Texture2D = Selection.activeObject;
		if (texture == null) {
			EditorUtility.DisplayDialog(
			"Select Texture",
			"You Must Select a Texture first!",
			"Ok");
			return;
		}
		var path = EditorUtility.OpenFilePanel(
			"Overwrite with png",
			"",
			"png");
		if (path.Length != 0) {
			var www = WWW("file:///" + path);
			www.LoadImageIntoTexture(texture);
		}
	}
}