public Builder setProgress(int max, int progress, boolean indeterminate)

<?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:id="@+id/activity_content"
  android:layout_width="match_parent"
  android:layout_height="match_parent"
  tools:context="com.example.administrator.day12.ContentActivity">
  <TextView
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:gravity="center"
    android:textSize="30sp"
    android:text="显示进度实图" />
</LinearLayout>

import android.app.Notification;
import android.app.NotificationManager;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.graphics.BitmapFactory;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.support.v7.app.NotificationCompat;
import android.view.View;
import android.widget.RemoteViews;
public class MainActivity extends AppCompatActivity {
  //定义notification实用的ID
  private static final int NO_3 =0x3;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
  }
  public void show3(View v){
    final NotificationCompat.Builder builder = new NotificationCompat.Builder(this);
    builder.setSmallIcon(R.mipmap.huangyueying);
    builder.setContentTitle("下载");
    builder.setContentText("正在下载");
    final NotificationManager manager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE);
    manager.notify(NO_3, builder.build());
    builder.setProgress(100,0,false);
    //下载以及安装线程模拟
    new Thread(new Runnable() {
      @Override
      public void run() {
        for(int i=0;i<100;i++){
          builder.setProgress(100,i,false);
          manager.notify(NO_3,builder.build());
          //下载进度提示
          builder.setContentText("下载"+i+"%");
          try {
            Thread.sleep(50);//演示休眠50毫秒
          } catch (InterruptedException e) {
            e.printStackTrace();
          }
        }
        //下载完成后更改标题以及提示信息
        builder.setContentTitle("开始安装");
        builder.setContentText("安装中...");
        //设置进度为不确定，用于模拟安装
        builder.setProgress(0,0,true);
        manager.notify(NO_3,builder.build());
//        manager.cancel(NO_3);//设置关闭通知栏
      }
    }).start();
  }
}