如何编程android来寻找特定的网络？ （问题简单的教程） [英] How do I program android to look for a particular network? (Issues Following Simple Tutorial)

问题描述

我试图使用以下示例：

如何编程android来寻找特定的网络？

但是由于以下问题，我无法执行：

But I'm unable to execute it due to issues stemming from the line:

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

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

之后，我收到了其他几个错误 - 但是我认为我正好遵循了这个教程/例子。

After that I'm getting several other errors - but [I think] I've followed the tutorial/example precisely.

import java.util.List;
import android.app.Activity;    
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Bundle;
import android.util.Log;
import android.content.Context; 

public class Connect extends Activity  {


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.connect);
        String networkSSID = "ANDRE-PC_NETWORK";
        String networkPass = "superman";

        WifiConfiguration conf = new WifiConfiguration();
        conf.SSID = "\"" + networkSSID + "\"";   //ssid must be in quotes


        conf.wepKeys[0] = "\"" + networkPass + "\""; 
        conf.wepTxKeyIndex = 0;
        conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
        conf.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40); 

        conf.preSharedKey = "\""+ networkPass +"\"";

        conf.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);

        WifiManager wifiManager = (WifiManager)getSystemService(WIFI_SERVICE); 
        wifiManager.addNetwork(conf);

        List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
        for( WifiConfiguration i : list ) {
            if(i.SSID != null && i.SSID.equals("\"" + networkSSID + "\"")) {
                 WifiManager.disconnect();
                 WifiManager.enableNetwork(i.networkId, true);
                 WifiManager.reconnect();                

                 break;
            }           
         }

    }}

IN ECLIPSE问题日志：

ISSUES IN ECLIPSE PROBLEM LOG:

Description Resource    Path    Location    Type
Cannot make a static reference to the non-static method reconnect() from the type WifiManager   Connect.java        line 41 Java Problem
Cannot make a static reference to the non-static method disconnect() from the type WifiManager  Connect.java        line 39 Java Problem
Cannot make a static reference to the non-static method enableNetwork(int, boolean) from the type WifiManager   Connect.java        line 40 Java Problem

推荐答案

你似乎混淆了一些变量名：

You seem to confuse some variable names:

WifiManager wifiManager = (WifiManager)context.getSystemService(Context.WIFI_SERVICE); 
wifiManager.add(conf);

List<WifiConfiguration> list = wifiManager.getConfiguredNetworks();
for( WifiConfiguration i : list ) {
    if(i.SSID != null && i.SSID.equals("\"" + networkSSID + "\"")) {
         wm.disconnect();
         wm.enableNetwork(i.networkId, true);
         wm.reconnect();                
         break;
    }           
}

wifiManager 应该是 wm ，反之亦然。另外上下文应该是这个或者只是作为 getSystemService（）是你的课程的一种方法。

wifiManager should be wm or vice versa. Also context should be this or just left out as getSystemService() is a method of your class.

我不确定 add（）的问题。

修改：

嗯 add（） 不存在 WifiManager 但 addNetwork（），所以我想你需要方法而不是 add（）

Well add() does not exist for WifiManager but addNetwork() does, so I guess you need that method instead of add()

Edit2 ：

你不知道你在做什么，对吧？您甚至不了解类名和变量名之间的区别！

You have no idea what you are doing, right? You don't even understand the difference between a class name and a variable name!

WifiManager wifiManager < - 首先是类型，也称为类。第二个是变量名。在 for 循环中，您使用类型/类而不是变量，因此只需写入 wifiManager 而不是 WifiManager 。

WifiManager wifiManager <- First is the Type, also known as class. The second one is the variable name. In your for loop you use the type/class instead of the variable, so just write wifiManager instead of WifiManager.

您应该从理解OOP和Java的基础知识开始。认真地...在尝试写它之前学习语言...

And you should definitively start by understanding the very basics of programming, OOP and Java. Seriously... Learn the language before you try to write it...

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