BroadcastReceiver(一)在AndroidManifest.xml中配置的廣播接收器(自動註冊登出)
阿新 • • 發佈:2019-01-10
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.fk.lbroadcastreceiver" > <application android:allowBackup="true" android:icon="@mipmap/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> <!-- 註釋下面程式碼,則Broadcast改為手動註冊登出 --> <receiver android:name=".LReceiver" android:enabled="true" android:exported="true" > </receiver> </application> </manifest>
2. Receiver程式碼
public class LReceiver extends BroadcastReceiver { public LReceiver() { } @Override public void onReceive(Context context, Intent intent) { // TODO: This method is called when the BroadcastReceiver is receiving // an Intent broadcast. //throw new UnsupportedOperationException("Not yet implemented"); System.out.println("接收器L 收到了訊息:" + intent.getStringExtra("msg")); } }