package com.example.jikangwang.myapplication;

import android.content.ComponentName;

import android.content.Context;

import android.content.Intent;

import android.content.ServiceConnection;

import android.os.Handler;

import android.os.IBinder;

import android.os.Looper;

import android.os.Message;

import android.support.v7.app.AppCompatActivity;

import android.os.Bundle;

import android.view.View;

import android.widget.Button;

import android.widget.ProgressBar;

import android.widget.TextView;

import android.widget.Toast;

import butterknife.BindView;

import butterknife.ButterKnife;

public class MainActivity extends AppCompatActivity {

    @BindView(R.id.button)

    Button button;

    @BindView(R.id.progressbar)

    ProgressBar progressBar;

    Handler mHandler;

    volatile boolean flag=true;

    Object object=new Object();

    ServiceConnection serviceConnection;

    MyService myService;

    private int progress = 0;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        ButterKnife.bind(this);

        serviceConnection=new ServiceConnection() {

            @Override

            public void onServiceConnected(ComponentName name, IBinder service) {

                myService=((MyService.MyBinder) service).getService();

            }

            @Override

            public void onServiceDisconnected(ComponentName name) {

            }

        };

        final Intent intent=new Intent(MainActivity.this,MyService.class);

        bindService(intent, serviceConnection, Context.BIND_AUTO_CREATE);

        button.setOnClickListener(new View.OnClickListener() {

            @Override

            public void onClick(View v) {

                myService.startDownLoad();

                listenProgress();

            }

        });

        MyThread thread=new MyThread();

    }

    public void listenProgress(){

        new Thread(new Runnable() {

            @Override

            public void run() {

                while(progress < myService.MAX_PROGRESS){

                    progress = myService.getProgress();

                    progressBar.setProgress(progress);

                    System.out.println("progress="+progress);

                    try {

                        Thread.sleep(1000);

                    } catch (InterruptedException e) {

                        e.printStackTrace();

                    }

                }

            }

        }).start();

    }

    public class MyThread extends Thread{

        @Override

        public void run() {

            super.run();

        }

    }

}

package com.example.jikangwang.myapplication;

import android.app.Service;

import android.content.Intent;

import android.os.Binder;

import android.os.IBinder;

import android.support.annotation.Nullable;

public class MyService extends Service {

    /**

     * 进度条的最大值

     */

    public static final int MAX_PROGRESS = 100;

    /**

     * 进度条的进度值

     */

    private int progress = 0;

    /**

     * 增加get()方法，供Activity调用

     * @return 下载进度

     */

    public int getProgress() {

        return progress;

    }

    @Nullable

    @Override

    public IBinder onBind(Intent intent) {

        return new MyBinder();

    }

    @Override

    public int onStartCommand(Intent intent, int flags, int startId) {

        return super.onStartCommand(intent, flags, startId);

    }

    public void startDownLoad(){

        new Thread(new Runnable() {

            @Override

            public void run() {

                while(progress < MAX_PROGRESS){

                    progress += 5;

                    try {

                        Thread.sleep(1000);

                    } catch (InterruptedException e) {

                        e.printStackTrace();

                    }

                }

            }

        }).start();

    }

    public class MyBinder extends Binder {

        public MyService getService(){

            return MyService.this;

        }

    }

}