Service 学习（五）Service使用广播发送数据给Actviity

package com.amaker.servicetoactivity;

import android.app.Service;
import android.content.Intent;
import android.os.IBinder;
import android.util.Log;

public class ServiceSender extends Service {

    boolean destroy;
    String Tag = "ServiceSender";

    @Override
    public void onCreate() {
        super.onCreate();
        Log.i(Tag, "ServiceSender onCreate()...");
        new Thread() {
            public void run() {
                int i = 0;
                while (!destroy) {
                    Intent intent = new Intent();
                    intent.setAction("com.test");
                    intent.putExtra("data", "I'am from Service" + i);
                    sendBroadcast(intent);
                    try {
                        Thread.sleep(1000);
                    } catch (InterruptedException e) {
                        e.printStackTrace();
                    }
                    i++;
                }
            };
        }.start();
    }

    @Override
    public IBinder onBind(Intent intent) {
        return null;
    }

    @Override
    public void onDestroy() {
        super.onDestroy();
        Log.i(Tag, "onDestroy()...");
        destroy = true;
    }
}

package com.amaker.servicetoactivity;

import android.app.Activity;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.Bundle;
import android.widget.TextView;

public class ActivityReceiver extends Activity {
	static final String Tag = "ActivityReceiver";

	InnerBroadCastReceiver broadCast;

	TextView tv;

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		tv = (TextView) findViewById(R.id.tv);
		// 注册广播接收器
		registerInnerBroadCastReceiver();
		// 启动服务
		startSenderService();
	}

	// 注册广播接收器
	private void registerInnerBroadCastReceiver() {
		broadCast = new InnerBroadCastReceiver();
		IntentFilter filter = new IntentFilter();
		filter.addAction("com.test");
		registerReceiver(broadCast, filter);
	}

	// 取消注册广播接收器
	private void unRegisterInnerBroadCastReceiver() {
		unregisterReceiver(broadCast);
	}

	// 启动服务
	private void startSenderService() {
		Intent intent = new Intent(this, ServiceSender.class);
		startService(intent);
	}

	// 停止服务
	private void stopSenderService() {
		Intent intent = new Intent(this, ServiceSender.class);
		stopService(intent);
	}
	//activity如果销毁也停止广播接收器,停止服务
	@Override
	protected void onDestroy() {
		super.onDestroy();
		unRegisterInnerBroadCastReceiver();
		stopSenderService();
	}
	//内部类，定义一个广播接收器，用于更新UI界面
	class InnerBroadCastReceiver extends BroadcastReceiver {

		@Override
		public void onReceive(Context context, Intent intent) {
			String action = intent.getAction();
			if (action.equals("com.test")) {
				tv.setText(intent.getStringExtra("data"));
			}
		}
	}
}