Android 消息广播Intent传递数据

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context=".BroadcastActivity" > <Button
android:id="@+id/sendBroadcastIntent"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="Broadcast Intent"
/>
</RelativeLayout>

public class BroadcastActivity extends Activity {
//设定为com.china.ui.NEW_LIFEFORM，显示内容前，多一条信息"收到广播信息"；
//public static final String MY_NEW_LIFEFORM="com.china.ui.NEW_LIFEFORM";
public static final String MY_NEW_LIFEFORM="NEW_LIFEFORM";
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_broadcast);
//传递数据
final Intent intent=new Intent(MY_NEW_LIFEFORM);
intent.putExtra("msgContent", "测试内容");
//初始化按钮
Button button=(Button) findViewById(R.id.sendBroadcastIntent);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View arg0) {
sendBroadcast(intent);
}
});
}
}

public class Receiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
String content=intent.getStringExtra("msgContent");
CharSequence string="收到信息:"+content;
Toast.makeText(context, string, Toast.LENGTH_LONG).show();
}
}

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.dh.broadcast"
android:versionCode=""
android:versionName="1.0" >
<uses-sdk android:minSdkVersion="" android:targetSdkVersion="" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="com.dh.broadcast.BroadcastActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
<receiver android:name="com.dh.broadcast.Receiver" android:enabled="true">
<intent-filter >
<!-- <action android:name="com.china.ui.NEW_LIFEFORM"/> -->
<action android:name="NEW_LIFEFORM"/>
</intent-filter>
</receiver>
</application>
</manifest>