Question

我在应用中使用

setWifiApEnabled()

来自隐藏API的

（通过反射访问）。它在一些较旧的手机上工作（还有三星Galaxy S3，有些手机有4.4，......）但我用三星Galaxy S5测试了它，我得到了

java.lang.reflect.InvocationTargetException
at java.lang.reflect.Method.invoke(Native Method)
at java.lang.reflect.Method.invoke(Method.java:372)
...

我使用的代码类似于Android 2.2 wifi hotspot API或How and what to set to Android WifiConfiguration.preSharedKey to connect to the WPA2 PSK WiFi network，但它有点旧代码。

你有经验吗？你有什么建议？

P.S。它在某些Android 4.4设备中也不起作用（但我没有得到InvocationTargetException）。

Answer 1

试试这个。

ConnectivityManager cman = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
        Method[] methods = cman.getClass().getMethods();

        try
        {
            wifiManager.setWifiEnabled(false);
            Method enableWifi = wifiManager.getClass().getMethod("setWifiApEnabled", WifiConfiguration.class, boolean.class);
            String ssid  =   " " //your SSID 
            String pass  =   " " // your Password
            WifiConfiguration  myConfig =  new WifiConfiguration();
            myConfig.SSID = ssid;
            myConfig.preSharedKey  = pass ;
            myConfig.status = WifiConfiguration.Status.ENABLED;
            myConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
            myConfig.allowedProtocols.set(WifiConfiguration.Protocol.RSN);
            myConfig.allowedProtocols.set(WifiConfiguration.Protocol.WPA);
            myConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP); 
            myConfig.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP); 
            myConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP); 
            myConfig.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
            result = (Boolean) enableWifi.invoke(wifiManager, myConfig, true);

        } 
        catch (Exception e) 
        {
            e.printStackTrace();
            result = false;
        }

如果您遇到异常，请尝试将此权限添加到您的清单中 android.permission.WRITE_SETTINGS

Answer 2

我遇到了同样的问题。

将android.permission.WRITE_SETTINGS添加到清单文件中并且有效。试试这个。

Answer 3

您需要将这些权限添加到AndroidManifest.xml：

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

它对我有用。

Answer 4

我找到了原因：

Caused by: java.lang.SecurityException: ConnectivityService: Neither user 10260 nor current process has android.permission.CONNECTIVITY_INTERNAL.

的信息：

How can system app located in /system/app have system permission in Android 4.4 KitKat build?

这是一个大问题：）

Answer 5

public void setWiFiApMode(boolean mode) {
        if (mContext == null) return;
        WifiManager wifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
        if (wifiManager == null) return;
        try {
            Method setWifiApEnabled = WifiManager.class.getMethod("setWifiApEnabled", WifiConfiguration.class, boolean.class);
            setWifiApEnabled.invoke(wifiManager, null, mode);
        } catch (Exception e) {
        }
    }

和

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

完全适用于Android N.

Android Lollipop - WiFi Hotspot setWifiApEnabled（）获取InvocationTargetException

5 个答案: