学步园

第一个应用程序：Broadcast

【MainActivity.java】

package com.example.broadcast;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;

public class MainActivity extends Activity {
	public final static String SEND_OK_MESSAGE = "send.ok.message";
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		 Intent intent = new Intent(SEND_OK_MESSAGE);
         intent.putExtra("name", "AnJon");
         sendBroadcast(intent);
	}
}

第二个应用程序：Broadcast1

【MainActivity.java】

package com.example.broadcast1;

import android.os.Bundle;
import android.app.Activity;
import android.content.Intent;

public class MainActivity extends Activity {

	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_main);
		Intent i = new Intent(this, MyService.class);
		startService(i);
	}
}

【MyService.java】

package com.example.broadcast1;

import android.app.Service;
import android.content.BroadcastReceiver;
import android.content.Context;
import android.content.Intent;
import android.content.IntentFilter;
import android.os.IBinder;
import android.widget.Toast;

public class MyService extends Service {

	public final static String SEND_OK_MESSAGE = "send.ok.message";

	private BroadcastReceiver myBroadCast = new BroadcastReceiver() {

		@Override
		public void onReceive(Context context, Intent intent) {
			String action = intent.getAction();
			if (action.equals(SEND_OK_MESSAGE)) {
				Toast.makeText(
						context,
						"接收到了一条广播为" + SEND_OK_MESSAGE
								+ intent.getStringExtra("name"),
						Toast.LENGTH_LONG).show();
			}
		}

	};

	@Override
	public void onCreate() {
		super.onCreate();
	}

	@Override
	public void onStart(Intent intent, int startId) {
		IntentFilter myFilter = new IntentFilter();
		myFilter.addAction(SEND_OK_MESSAGE);
		this.registerReceiver(myBroadCast, myFilter);
		super.onStart(intent, startId);
	}

	@Override
	public IBinder onBind(Intent arg0) {
		return null;
	}

}

【AndroidManifest.xml】清单文件

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.example.broadcast1"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="17" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name="com.example.broadcast1.MainActivity"
            android:label="@string/app_name" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <service android:name=".MyService">
			<intent-filter>
				<action android:name="com.example.broadcast1.MyService"></action>
			</intent-filter>
			<intent-filter>
				<action android:name="send.ok.message" />
			</intent-filter>
		</service>
    </application>

</manifest>

运行效果：----------------------------------》》》》》

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