Android Services设置ProgressBar（进度条的值）

Services实现效果：

开启服务方法：

startService(intent);

关闭服务方法：

stopService(intent);

服务执行完毕后自动调用onDestroy方法

stopSelf();
//继承Service
package com.example.g160628_android_23_services1;import android.app.Service;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.os.Handler;import android.os.IBinder;import android.os.Message;import android.os.SystemClock;import android.support.annotation.IntDef;import android.support.annotation.Nullable;import android.util.Log;import android.widget.ProgressBar;/** * Created by Administrator on 2017/7/14. */public class MyServices extends Service {    @Nullable    @Override    public IBinder onBind(Intent intent) {        return null;    }    @Override    public void onCreate() {        super.onCreate();        Log.i("test","onCreate");    }    @Override    public int onStartCommand(Intent intent,int flags, int startId) {          new MyThread(intent,startId).start();        Log.i("test","onStartCommand");        return Service.START_STICKY;    }    class MyThread extends Thread{        private int startId;        private  Intent intent;        public MyThread(Intent intent,int startId){            this.startId=startId;            this.intent=intent;        }        Handler handler=new Handler(){            @Override            public void handleMessage(Message msg) {                int i=msg.what;                MainActivity.progressBar.setProgress(i);            }        };        @Override        public void run() {            for (int i =1; i <=100 ; i++) {                handler.sendEmptyMessage(i);                SystemClock.sleep(200);                Log.i("test","   "+i);            }            //服务执行完毕后自动调用onDestroy方法            stopSelf(startId);        }    }    @Override    public void onDestroy() {        super.onDestroy();        Log.i("test","onDestroy");    }}

//主actity
package com.example.g160628_android_23_services1;import android.content.BroadcastReceiver;import android.content.Context;import android.content.Intent;import android.support.v7.app.AppCompatActivity;import android.util.Log;import android.view.View;import android.widget.ProgressBar;public class MainActivity extends AppCompatActivity {    private Intent intent;    public static  ProgressBar progressBar;    @Override    protected void onCreate(Bundle savedInstanceState) {        super.onCreate(savedInstanceState);        setContentView(R.layout.activity_main);        progressBar = (ProgressBar) findViewById(R.id.progressBar);        intent = new Intent(this,MyServices.class);    }    //开始执行    public void start(View view){        startService(intent);    }    //关闭    public void stop(View view){        stopService(intent);    }
}