Android Broadcast 小例子

懒得写了直接粘上代码吧做个备份

manifest.xml

 

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
      package="com.dada.test"
      android:versionCode="1"
      android:versionName="1.0">
    <application android:icon="@drawable/icon" android:label="@string/app_name">
        <activity android:name=".TestBroadcastActivity"
                  android:label="@string/app_name">
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />
                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>

    </application>
    <uses-sdk android:minSdkVersion="10" />
</manifest> 

TestBroadcastActivity.java

package com.dada.test;

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.view.View;
import android.widget.Button;
import android.widget.Toast;

public class TestBroadcastActivity extends Activity {
	/** Called when the activity is first created. */
	private Button send_broadcast_button;

	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.main);
		send_broadcast_button = (Button) this.findViewById(R.id.send_broadcast_button);
		send_broadcast_button.setOnClickListener(new SendBroadcast());

		IntentFilter intentFilter = new IntentFilter();
		intentFilter.addAction("cn.abel.action.broadcast");
		//多次调用会接收多次
		registerReceiver(new MyBroadcastReciver(), intentFilter);
		
	}

	private class SendBroadcast implements View.OnClickListener {
		public void onClick(View v) {
			Intent intent = new Intent();
			intent.setAction("cn.abel.action.broadcast");
			// 要发送的内容
			intent.putExtra("author", "Abel");
			// 发送 一个无序广播
			TestBroadcastActivity.this.sendBroadcast(intent);
		}
	}

	private class MyBroadcastReciver extends BroadcastReceiver {
		@Override
		public void onReceive(Context context, Intent intent) {
			String action = intent.getAction();
			if (action.equals("cn.abel.action.broadcast")) {
				String author = intent.getStringExtra("author");
				// 在控制台显示接收到的广播内容
				System.out.println("begin author==>" + author);
				// 在android端显示接收到的广播内容
				Toast.makeText(TestBroadcastActivity.this, author, 1).show();
				System.out.println("end author==>" + author);
				// 在结束时可取消广播
				TestBroadcastActivity.this.unregisterReceiver(this);
			}
		}

	}

}