import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;

public class BroadcastMain extends Activity {
  Button send;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_broadcast_main);
    //获取程序界面中的按钮
    send = (Button) findViewById(R.id.send);
    send.setOnClickListener(new OnClickListener() {

      @Override
      public void onClick(View v) {
        // 创建Intent对象
        Intent intent = new Intent();
        //设置Intent的属性
        intent.setAction("broadcasttest.action.CRAZY_BROAFCAST");
        intent.putExtra("msg", "简单的信息");
        //发送广播
        sendBroadcast(intent);
      }
    });
  }

 

}

上面的程序中粗体字代码用于创建一个Intent对象,1并使用该Intent对象对外发送一条广播,该程序所使用的BroadcastReceiver代码如下:

import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.widget.Toast;

public class MyReceiver extends BroadcastReceiver{  

  @Override
  public void onReceive(Context context, Intent intent) {
    Toast.makeText(context, "接收到的Intent的Action为:"+
      intent.getAction()+"\n消息内容是:"+intent.getStringExtra("msg"),
      5000).show();

  }

}

posted on 2016-06-24 09:53  奋斗青年一族  阅读(308)  评论(0编辑  收藏  举报