BroadcastReceiver的两种注册方式之------动态注册

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:orientation="vertical"
    android:layout_width="fill_parent"
    android:layout_height="fill_parent">

    <TextView
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:textSize="24dip"
        android:gravity="center"
        android:text="BroadcastReceiver演示"/>

       <Button
        android:id="@+id/send_dynamic"
        android:layout_width="fill_parent"
        android:layout_height="wrap_content"
        android:text="发送自定义动态注册广播" />

</LinearLayout>

AndroidManifest.xml

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

    <uses-sdk
        android:minSdkVersion="14"
        android:targetSdkVersion="21" />

    <application
        android:allowBackup="true"
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".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>

    </application>

</manifest>

MainActivity.java

package com.my.broaccast;

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

public class MainActivity extends Activity {

    private Button sendDynamicButton;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);    

        sendDynamicButton = (Button) findViewById(R.id.send_dynamic);
        sendDynamicButton.setOnClickListener(new OnClickListener() {

            @Override
            public void onClick(View v) {
                // TODO Auto-generated method stub
                Intent intent = new Intent();
                intent.setAction("com.my.dynamicrecever");
                intent.putExtra("msg", "接收动态注册广播成功！");
                sendBroadcast(intent);
            }
        });
    }

    protected void onStart() {
        super.onStart();
        IntentFilter dynamic_filter = new IntentFilter();
        dynamic_filter.addAction("com.my.dynamicrecever");
        registerReceiver(dynamicReceiver, dynamic_filter);
    }

    private BroadcastReceiver dynamicReceiver = new BroadcastReceiver() {

        @Override
        public void onReceive(Context context, Intent intent) {
            // TODO Auto-generated method stub
            if (intent.getAction().equals("com.my.dynamicrecever")) {
                String msg = intent.getStringExtra("msg");
                Toast.makeText(context, msg, Toast.LENGTH_SHORT).show();
            }
        }
    };
}