控制SeekBar进度条来同时触发ProgressBar

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:paddingBottom="16dp"
    android:paddingLeft="16dp"
    android:paddingRight="16dp"
    android:paddingTop="16dp"
    tools:context="com.example.wang.testapp2.TestActivity4"
    android:orientation="vertical">

    <ProgressBar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        style="?android:attr/progressBarStyleHorizontal"
        android:progress="40"
        android:secondaryProgress="50"
        android:max="80"
        android:id="@+id/pb_1"/>

    <ProgressBar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        style="?android:attr/progressBarStyleLarge"
        android:id="@+id/pb_2"/>

    <SeekBar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:progress="40"
        android:max="80"
        android:secondaryProgress="50"
        android:id="@+id/se_1"/>

</LinearLayout>

package com.example.wang.testapp2;

import android.app.Activity;
import android.app.AlertDialog;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.widget.ImageView;
import android.widget.ProgressBar;
import android.widget.SeekBar;
import android.widget.Toast;

public class TestActivity4 extends Activity {

    ProgressBar pb_1;
    ProgressBar pb_2;
    SeekBar se_1;
    
    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_test4);

        se_1=(SeekBar)findViewById(R.id.se_1);
        pb_1=(ProgressBar)findViewById(R.id.pb_1);
        pb_2=(ProgressBar)findViewById(R.id.pb_2);

        se_1.setOnSeekBarChangeListener(new SeekBar.OnSeekBarChangeListener() {

            //进度变化触发
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {

                //设置进度条1的进度值
                pb_1.setProgress(progress);


                //判断是否达到最大值
                if (progress == se_1.getMax())
                {
                    pb_2.setVisibility(View.INVISIBLE);//不显示但位置还保留
                }
                else
                {
                    pb_2.setVisibility(View.VISIBLE);
                }

                //只要progress变化就被触发

//                Toast.makeText(TestActivity4.this, "当前进度="+progress, Toast.LENGTH_SHORT).show();
            }

            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

                Log.e("TAG", "进度条开始拖动");
            }

            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {

                Log.e("TAG", "进度条停止拖动");

            }
        });

    }
}