访问 WifiInfo 时在 BroadcastReceiver 中获取 SecurityException

Question

我在 BroadcastRecevier 中收到 SecurityException：

02-08 12:18:39.169 E/AndroidRuntime(22363): java.lang.RuntimeException: Unable to start receiver surin.de.wakeonlan.BackgroudReceiver: java.lang.SecurityException: WifiService: Neither user 10171 nor current process has android.permission.ACCESS_WIFI_STATE.

02-08 12:18:39.169 E/AndroidRuntime(22363): at surin.de.wakeonlan.BackgroudReceiver.onReceive(BackgroudReceiver.java:26)

我的背景接收器Class:

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

      WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
      WifiInfo wifiInfo = wifiManager.getConnectionInfo(); //line 26
      String ssid = wifiInfo.getSSID();

接收器在清单中的此处注册：

<receiver android:name="surin.de.wakeonlan.BackgroudReceiver"
        android:exported="false">
        <intent-filter>
            <action android:name="android.net.conn.CONNECTIVITY_CHANGE"/>
        </intent-filter>
    </receiver>

这也在应用程序标签内的清单中：

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

Answer 1

您还需要添加以下权限。

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

并确保 <uses-permission 是清单标签的直接子标签而不是应用程序标签

Answer 2

添加以下 2 个权限（并保留 android.permission.ACCESS_WIFI_STATE）

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

清理然后构建项目

访问 WifiInfo 时在 BroadcastReceiver 中获取 SecurityException

Getting a SecurityException in a BroadcastReceiver while accesing WifiInfo

java

android

permissions

broadcastreceiver