牛轧糖中的互联网连接

Question

我想在我的应用程序中检查互联网连接，但此代码不适用于 android 牛轧糖以检查互联网连接此代码适用于棉花糖和奇巧但不适用于牛轧糖请帮助我

广播代码：

public class NetworkChangeReceiver extends BroadcastReceiver {

@Override
public void onReceive(Context context, Intent intent) {
    final ConnectivityManager connMgr = (ConnectivityManager) context
            .getSystemService(Context.CONNECTIVITY_SERVICE);

    NetworkInfo networkInfo=connMgr.getActiveNetworkInfo();
    if(networkInfo!=null && networkInfo.isConnectedOrConnecting()){
        Toast.makeText(context, "connected", Toast.LENGTH_SHORT).show();
    }


}
}

清单文件：

<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="clicksite.org.testinternetconnection">

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



<application
    android:allowBackup="true"
    android:icon="@mipmap/ic_launcher"
    android:label="@string/app_name"
    android:roundIcon="@mipmap/ic_launcher_round"
    android:supportsRtl="true"
    android:theme="@style/AppTheme">
    <activity android:name=".MainActivity">
        <intent-filter>
            <action android:name="android.intent.action.MAIN" />

            <category android:name="android.intent.category.LAUNCHER" />
        </intent-filter>
    </activity>


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


</application>

</manifest>

Answer 1

显然，向清单中添加广播接收器已被弃用。

Android 文档给出了这样的解释：

Apps targeting Android 7.0 (API level 24) and higher do not receive CONNECTIVITY_ACTION broadcasts if they declare the broadcast receiver in their manifest. Apps will still receive CONNECTIVITY_ACTION broadcasts if they register their BroadcastReceiver with Context.registerReceiver() and that context is still valid.

看看是否能解决您的问题。

IntentFilter intentFilter = new IntentFilter("android.net.conn.CONNECTIVITY_CHANGE");
this.registerReceiver(new NetworkConnectionReceiver(), intentFilter);

这可能也很有趣： https://developer.android.com/reference/android/content/Context.html#registerReceiver(android.content.BroadcastReceiver,%20android.content.IntentFilter)

Answer 2

我遇到了同样的问题。我正在考虑创建一个在后台运行并耐心等待广播的服务。

我实际上用 Task Scheduler us android evernote here job library then

public static void scheduleAdvancedJob() {
    PersistableBundleCompat extras = new PersistableBundleCompat();
    extras.putString("key", "smj");

    int jobId = new JobRequest.Builder(MainConstant.TAG)
            .setExecutionWindow(3_000L, 30_000L)
            .setBackoffCriteria(5_000L, JobRequest.BackoffPolicy.EXPONENTIAL)
            .setRequiresCharging(false)
            .setRequiresDeviceIdle(false)
            .setRequiredNetworkType(JobRequest.NetworkType.CONNECTED)
            .setExtras(extras)
            .setRequirementsEnforced(true)
            .setUpdateCurrent(true)
            .build()
            .schedule();
}

牛轧糖中的互联网连接

Internet connection in Nougat

android

broadcastreceiver

job-scheduling

internet-connection