我这个主要是缩短Toast显示时间，要延长时间的话，可自行更改

代码

import android.content.Context;import android.os.CountDownTimer;import android.util.Log;import android.widget.Toast;public class ToastUtil {  private String TAG = "ToastUtil";  private Toast mToast;  private TimeCount timeCount;  private String message;  private boolean canceled = true;  public ToastUtil(Context context, String msg) {    message = msg;    Log.i("ToastUtil", "Toast start...");    if (mToast == null) {      mToast =Toast.makeText(context,message,Toast.LENGTH_SHORT);       Log.i("ToastUtil", "Toast create...");    }  }  /**   * 自定义居中显示toast   */  public void show() {    mToast.show();    Log.i("ToastUtil", "Toast show...");  }  /**   * 自定义时长、居中显示toast   * @param duration   */  public void show(int duration) {    timeCount = new TimeCount(duration, 100);    Log.i("ToastUtil", "Toast show...");    if (canceled) {      timeCount.start();      show();      canceled = false;    }  }  /**   * 隐藏toast   */  private void hide() {    if (mToast != null) {      mToast.cancel();    }    canceled = true;    Log.i("ToastUtil", "Toast that customed duration hide...");  }  /**   * 自定义计时器   */  private class TimeCount extends CountDownTimer {    public TimeCount(long millisInFuture, long countDownInterval) {      super(millisInFuture, countDownInterval); //millisInFuture总计时长，countDownInterval时间间隔(一般为1000ms)    }    @Override    public void onTick(long millisUntilFinished) {      Log.e(TAG, ": " + millisUntilFinished / 100 + "后消失" );    }    @Override    public void onFinish() {      hide();//记数结束后调用取消Toast的显示    }  }}

使用方式：

ToastUtil toastUtil = new ToastUtil(MainActivity.this,"保存成功!");//MainActivity.this为//Context,toastUtil.show(500);