解决吐司连续触发一直显示的问题

/**
 * 吐司
 */
public class T {
    private static Toast toast;
    public static void t(Context context,String msg){
        if (toast == null) {
            toast = Toast.makeText(context, msg, Toast.LENGTH_SHORT);
        } else {
            toast.cancel();//关闭吐司显示
            toast = Toast.makeText(context, msg, Toast.LENGTH_SHORT);
        }
        toast.show();//重新显示吐司
    }