Toast管理——ToastUtils

import android.content.Context;import android.widget.Toast;public class ToastUtils {    private static Toast toast;    public static void showToast(Context context, String content) {        if (toast == null) {            toast = Toast.makeText(context,                    content,                    Toast.LENGTH_SHORT);        }        else {            toast.setText(content);        }        toast.show();    }}