Android 进度条

<?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"
    tools:context="com.example.administrator.android.TestActivity4"
    android:orientation="vertical">
    <!--进度条-->
    <ProgressBar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        style="?android:attr/progressBarStyleHorizontal"
        android:progress="30"
        android:secondaryProgress="67"
        android:max="100"
        android:id="@+id/pb_1"/>
    <!-- 旋转进度条-->
    <ProgressBar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        style="?android:attr/progressBarStyleLarge"
        android:id="@+id/pb_2"
        android:visibility="gone"/>
    <!-- 可拖动进度条-->
    <SeekBar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:progress="0"
        android:secondaryProgress="0"
        android:max="80"
        android:id="@+id/se_1"/>
    <!--星级进度条-->
    <RatingBar
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:numStars="10"
        android:rating="5.5"
        android:isIndicator="true"/>
</LinearLayout>

package com.example.administrator.android;

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.ProgressBar;
import android.widget.SeekBar;
import android.widget.Toast;

public class TestActivity4 extends AppCompatActivity {
    SeekBar se_1;
    ProgressBar pb_1;
    ProgressBar pb_2;
    @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() {
//           进度改变触发
            @Override
            public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) {
                //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 但位置仍然保留
                }
                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();
            }
//           开始拖动
            @Override
            public void onStartTrackingTouch(SeekBar seekBar) {

                Log.e("TAG","进度条开始拖动");
            }
//          结束拖动
            @Override
            public void onStopTrackingTouch(SeekBar seekBar) {
                Log.e("TAG","进度条停止拖动");
            }
        });
    }
}

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.administrator.android">

    <application
        android:allowBackup="true"
        android:icon="@mipmap/ic_launcher"
        android:label="@string/app_name"
        android:supportsRtl="true"
        android:theme="@style/AppTheme">
        <activity android:name=".MainActivity">
        </activity>
        <activity android:name=".TestActivity4">
            <intent-filter>
            <action android:name="android.intent.action.MAIN" />
            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
        </activity>
    </application>

</manifest>