android中访问wifi的安全异常

发布于 2024-12-17 12:10:58 字数 989 浏览 3 评论 0原文

请参阅以下代码

    wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
    if (wifi.isWifiEnabled() == false)
    {
        Toast.makeText(getApplicationContext(), "wifi is disabled..making it enabled", Toast.LENGTH_LONG).show();
        wifi.setWifiEnabled(true);
    }

虽然我已在清单文件中添加了权限，

   <manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.test.wifi"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk android:minSdkVersion="8" />
<user-permission android:name="android.permission.ACCESS_WIFI_STATE" />

但仍然给出以下错误

   11-23 15:18:24.399: E/AndroidRuntime(6800): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.test.wifi/com.test.wifi.WifiDemoActivity}: java.lang.SecurityException: WifiService: Neither user 10082 nor current process has android.permission.ACCESS_WIFI_STATE.

请帮助解释为什么会发生这种情况

原文

Please see the following code

    wifi = (WifiManager) getSystemService(Context.WIFI_SERVICE);
    if (wifi.isWifiEnabled() == false)
    {
        Toast.makeText(getApplicationContext(), "wifi is disabled..making it enabled", Toast.LENGTH_LONG).show();
        wifi.setWifiEnabled(true);
    }

Though I have added the permission in manifest file as

   <manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="com.test.wifi"
android:versionCode="1"
android:versionName="1.0" >

<uses-sdk android:minSdkVersion="8" />
<user-permission android:name="android.permission.ACCESS_WIFI_STATE" />

but still it is giving following error

   11-23 15:18:24.399: E/AndroidRuntime(6800): java.lang.RuntimeException: Unable to start activity ComponentInfo{com.test.wifi/com.test.wifi.WifiDemoActivity}: java.lang.SecurityException: WifiService: Neither user 10082 nor current process has android.permission.ACCESS_WIFI_STATE.

Please help why this is happening

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秉烛思 2024-12-24 12:10:58

如您所知，为了能够访问 wifi，您需要 android:name="android.permission.ACCESS_WIFI_STATE" 。

如果您要启用或禁用 wifi 连接，您还需要两个权限：ACCESS_WIFI_STATE 和 CHANGE_WIFI_STATE

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

这应该可以为您完成。

To be able to access the wifi you need android:name="android.permission.ACCESS_WIFI_STATE" as you already know.

If you are enabling or disabling the wifi connection you are also going to need both permissions: ACCESS_WIFI_STATE and CHANGE_WIFI_STATE

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

That should do it for you.

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陈甜 2024-12-24 12:10:58

添加以下几行

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

希望有帮助！

add following lines

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

hope they help!

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