WiFi状态未启用 [英] WiFi state is not enabling

问题描述

我正在尝试创建一个用于启用和禁用wifi的小部件.

I am trying to create a widget for enabling and disabling the wifi.

if(myWifiManager.isWifiEnabled()){
            System.out.println("Toggle Wifi Enabled going to disable");
            myWifiManager.setWifiEnabled(false);
        }
        else{
            System.out.println("Wifi Disabled going to enable ");

            myWifiManager.setWifiEnabled(true);
            System.out.println("WI: "+myWifiManager.isWifiEnabled());
        }

这是我正在使用的代码，禁用部分工作正常，但是启用部分工作不正常.启用wifi后不久，我正在打印wifi状态，我将其设置为false.

This is the code i am using the disabling part is working fine but the enabling part is not working fine. Soon after enabling the wifi i am printing the wifi state i am getting it as false.

推荐答案

以下是在Android中打开和关闭wifi的方法.

Here is how to turn on and turn off wifi in android.

首先，您需要在清单文件中声明以下内容

First you need to declare the following in your manifest file

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

在Activity类上完成操作

After doing it that on your Activity class

private WifiManager wifiManager;
@Override 
public void onCreate(Bundle icicle) {
 ....................
 wifiManager = (WifiManager) this.getSystemService(Context.WIFI_SERVICE);
 if(wifiManager.isWifiEnabled()){
 wifiManager.setWifiEnabled(false);
 }else{
wifiManager.setWifiEnabled(true);
}

}

说明

Explanation

从我们的系统获取Wifi服务

wifiManager = (WifiManager) this.getSystemService(Context.WIFI_SERVICE);

检查我们的wifi当前是打开还是关闭

if(wifiManager.isWifiEnabled()){

打开/关闭我们的wifi wifiManager.setWifiEnabled();

Turn on/off our wifi wifiManager.setWifiEnabled();

参考

WifiEnabler

http://google-androidlovers.blogspot.com/2012/01/scan-for-wireless-networks-in-android.html

http://www.java2s.com/Open-Source/Android/android-platform-apps/Settings/com/android/settings/wifi/WifiApEnabler.java.htm

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