package com.example.myapplication;
import android.app.ProgressDialog;
import android.content.DialogInterface;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.Button;
import android.widget.Toast;
public class MainActivity extends AppCompatActivity implements View.OnClickListener {
  ProgressDialog prodialog;
  Button show;
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    show = (Button) findViewById(R.id.show);
    show.setOnClickListener(this);
  }
  @Override
  public void onClick(View view) {
    prodialog = new ProgressDialog(MainActivity.this);
    prodialog.setProgressStyle(ProgressDialog.STYLE_HORIZONTAL);
    prodialog.setTitle("编程素材网");
    prodialog.setMessage("jb51");
    prodialog.setIcon(R.mipmap.ic_launcher);
    //设计进度条属性
    prodialog.setMax(100);
    prodialog.incrementProgressBy(50);
    //明确显示进度
    prodialog.setIndeterminate(false);
    prodialog.setButton(DialogInterface.BUTTON_POSITIVE,"确定",
    new DialogInterface.OnClickListener() {
      @Override
      public void onClick(DialogInterface dialogInterface, int i) {
        Toast.makeText(MainActivity.this,"hello",Toast.LENGTH_LONG).show();
      }
    });
    prodialog.setCancelable(true);
    prodialog.show();
  }
}

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout
  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:paddingLeft="@dimen/activity_horizontal_margin"
  android:paddingRight="@dimen/activity_horizontal_margin"
  android:paddingTop="@dimen/activity_vertical_margin"
  android:paddingBottom="@dimen/activity_vertical_margin"
  tools:context="com.example.myapplication.MainActivity">
  <Button
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:text="显示进度天对话框"
    android:id="@+id/show"
    android:layout_alignParentLeft="true"
    android:layout_alignParentStart="true" />
</RelativeLayout>