Android:Broadcast Intent與Broadcast Receiver

<AndroidManifest.xml>


<manifest xmlns:android="http://schemas.android.com/apk/res/android"
    package="com.broadcast"
    android:versionCode="1"
    android:versionName="1.0" >

    <uses-sdk
        android:minSdkVersion="8"
        android:targetSdkVersion="15" />

    <application
        android:icon="@drawable/ic_launcher"
        android:label="@string/app_name"
        android:theme="@style/AppTheme" >
        <activity
            android:name=".Brocast"
            android:label="@string/title_activity_brocast" >
            <intent-filter>
                <action android:name="android.intent.action.MAIN" />

                <category android:name="android.intent.category.LAUNCHER" />
            </intent-filter>
        </activity>
        <--可由manifest圖形化介面設定-->
        <receiver android:name=".Myreceiver" >
          <--目前只知道要用key的...-->
            <intent-filter>
                <action android:name="com.broadcast"/>
            </intent-filter>
                
        </receiver>
    </application>

</manifest>

package com.broadcast;

import ....

public class Brocast extends Activity {
String s;

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_brocast);
    }

 public void onclick(View v){
        //建立一個Intent物件，並指定要廣播的訊息，PS:這個廣播訊息必需要至Manifest中註冊
           <intent-filter>
                <action android:name="com.broadcast"/>
            </intent-filter>
Intent intent=new Intent("com.broadcast");
s="hello,this is broadcast";
intent.putExtra("key", s);
         //廣播此Intent物件
sendBroadcast(intent);
 }
   
}

<建立一個新class>



package com.broadcast;

import ....

public class Myreceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
// TODO Auto-generated method stub
String data=intent.getStringExtra("key");
Toast.makeText(context, "值為"+data,3000).show();

}

}