android service给activity发广播,Android中Service发送广播给activity

Android中，service和activity是2大组件，如何在后台运行service，并且控制前台activity的显示呢，这里用到了广播。

这里就不废话了，先贴activity代码：

package com.example.broadcasewithservice;

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 MainActivity extends Activity {

private TextView tv;

@Override

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);

tv=(TextView)findViewById(R.id.tv);

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

this.startService(intent);

}

@Override

protected void onResume() {