應用程式外的Android Internet連接檢查器

Question

每當連接互聯網時，我的應用程序都需要執行某些操作，反之亦然。 不過，我需要做的這超出了我的申請。 有很多的想法，並幫助這里計算器，但它總是內的應用程序。 我知道AlarmManager在應用程序外部運行，但是如果我每隔5分鍾檢查一次Internet連接，那只會耗盡電池電量。 我想要的是檢查應用程序外部的連接以下載某些內容。

我還發現Intent Service也可以在應用程序外部運行。 我試圖將其放入Wakeful Broadcast Receiver中。 但是，它仍然沒有被調用。

有人可以幫我嗎？ 謝謝！

這是我的喚醒廣播接收器

public class ConnectivityOutsideAppReceiver extends WakefulBroadcastReceiver {

    private static final String LOG_TAG = ConnectivityOutsideAppReceiver.class.getSimpleName();

    private ConnectivityManager connectivityManager;
    private static boolean connection = false;

    @Override
    public void onReceive(Context context, Intent intent){

        ComponentName comp = new ComponentName(context.getPackageName(),
                ConnectivityOutsideAppService.class.getName());

        // Start the service, keeping the device awake while it is
        // launching.
        startWakefulService(context, (intent.setComponent(comp)

        ));
    }

}

這是意向服務

公共類ConnectivityOutsideAppService擴展了IntentService {

private static final String LOG_TAG = ConnectivityOutsideAppService.class.getSimpleName();
private ConnectivityManager connectivityManager;
private static boolean connection = false;
private Context context;

public ConnectivityOutsideAppService() {
   super(ConnectivityOutsideAppService.class.getSimpleName());
    this.context = context;
}

@Override
protected void onHandleIntent(Intent intent) {
    connectivityManager =
            (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
    checkConnectionOnDemand();

    Log.e(LOG_TAG, " ## onHandleIntent##");
    if (connection == true
            && intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY,
            false)) {
        Log.e(LOG_TAG, " ## connection == true ##");
        connection = false;
    } else if (connection == false
            && !intent.getBooleanExtra(ConnectivityManager.EXTRA_NO_CONNECTIVITY,
            false)) {
        Log.e(LOG_TAG, " ## connection == false ##");
        connection = true;
    }

    ConnectivityOutsideAppReceiver.completeWakefulIntent(intent);
}

public static boolean hasConnection() {
    return connection;
}

private void checkConnectionOnDemand() {
    Log.e(LOG_TAG, " ## checkConnectionOnDemand ##");
    final NetworkInfo info = connectivityManager.getActiveNetworkInfo();
    if (info == null || info.getState() != NetworkInfo.State.CONNECTED) {
        if (connection == true) {
            Log.e(LOG_TAG, " ## connection == true ##");
            connection = false;
        }
    } else {
        if (connection == false) {
            Log.e(LOG_TAG, " ## connection == false ##");
            connection = true;
        }
    }
}
}

這是我的Android清單

    <uses-permission android:name="android.permission.INTERNET" />

    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <service
        android:name="com.timetrackermobilelog.BusinessServices.ConnectivityOutsideAppService"
        android:exported="false"/>

    <receiver android:name="com.timetrackermobilelog.Utilities.ConnectivityOutsideAppService"
              android:enabled="true"
              android:process=":remote">

        <intent-filter android:priority="1000" >
            <action android:name="com.timetrackermobilelog.Utilities.ConnectivityOutsideAppService" />
            <category android:name="com.Utilities" />
        </intent-filter>
    </receiver>

我已經嘗試在Activity中注冊接收者，但效果不佳。

IntentFilter intentFilter = new IntentFilter("com.pointwest.timetrackermobilelog.Utilities.ConnectivityOutsideAppReceiver");
ConnectivityOutsideAppReceiver connectivityOutsideAppReceiver = new ConnectivityOutsideAppReceiver();
registerReceiver(connectivityOutsideAppReceiver, intentFilter);

有什么我想念的嗎？

Answer 1

感謝@Mike M.做出了幾處更改，就給出了答案。

在Android清單中，將其更改為：

<intent-filter android:priority="1000" >
                <action android:name="android.net.conn.CONNECTIVITY_CHANGE"/>
            </intent-filter>

然后將該服務的onHandleIntent更改為：

connectivityManager = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);