Question

我尝试使用此方法在设备上启动wifi服务：

public void wifiActivation() {
    Context context = MainActivity.this;
    WifiManager wifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE);

    //Boolean checkWifiStatus = wifiManager.isWifiEnabled();

    /*if(!checkWifiStatus ){*/
        try
        {       
             Boolean checkWifiStatus = wifiManager.isWifiEnabled();
             wifiManager.setWifiEnabled(true);
        }
        catch(Exception ex)
        {
             ex.printStackTrace();
        }
}

但我在布尔值上检测到错误＆＃39; checkWifiStatus＆＃39;，我猜它是关于权限的：

java.lang.SecurityException: WifiService: Neither user 10126 nor current process has android.permission.ACCESS_WIFI_STATE.

但是在我的清单中你可以找到这些权限：

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

    <!-- Network State Permissions -->
    <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

    <!-- Wifi State Permissions -->
    <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" />  
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />

Answer 1

除了您现有的权限外，还添加以下权限：

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

Wifi激活和权限

1 个答案: