import android.widget.Toast; public class ToastUtil {    private static Toast mToast = null;     private static long lastClickTime;     // 防止连续点击按钮    public synchronized static boolean isFastClick() {        long time = System.currentTimeMillis();        if (time - lastClickTime < 1900) {            return true;        }        lastClickTime = time;        return false;    }     static {        mToast = Toast.makeText(context, "",                Toast.LENGTH_SHORT);    }     public static void showToast(String str) {        try {            mToast.setText(str);            mToast.show();        } catch (Exception e) {            e.printStackTrace();        }    }     public static void showToast(int resId) {        try {            mToast.setText(resId);            mToast.show();        } catch (Exception e) {            e.printStackTrace();        }    } }