AndroidActivity与Service进行数据交互详解

public class MsgService extends Service {
  public MsgService() {
  }

  /**
   * 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;
  }

  /**
   * 模拟下载任务，每秒钟更新一次
   */
  public void startDownLoad(){
    new Thread(new Runnable() {

      @Override
      public void run() {
        while(progress 

public class MainActivity extends Activity {

  private Button button19;

  private MsgService msgService;
  private int progress = 0;
  private ProgressBar mProgressBar;


  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

 


    btnExec = (Button) findViewById(R.id.btnExec);
    button19 = (Button) findViewById(R.id.button19);
    mProgressBar = (ProgressBar) findViewById(R.id.progressBar);


    button19.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View view) {
        msgService.startDownLoad();
      }
    });

    Intent intent = new Intent(this, MsgService.class);
    bindService(intent, mServiceConnection, Context.BIND_AUTO_CREATE);

 

  }

 

 

  ServiceConnection mServiceCOnnection= new ServiceConnection() {
    @Override
    public void onServiceConnected(ComponentName componentName, IBinder iBinder) {
      msgService = ((MsgService.MyBinder) iBinder).getService();

      msgService.setOnProgressListener(new MsgService.OnProgressListener() {
        @Override
        public void onProgress(int progress) {
          mProgressBar.setProgress(progress);
        }
      });
    }

    @Override
    public void onServiceDisconnected(ComponentName componentName) {

    }
  };


  @Override
  protected void onDestroy() {

    unbindService(mServiceConnection);
    super.onDestroy();
  }
}