Android的扫描WiFi网络 [英] Android Scan for Wifi networks

问题描述

我试图扫描无线网络，发现网络上的这个有用的来源。 遗憾的是它不工作，我不知道为什么。我的问题是，我不能等待10分钟的结果 - 我需要他们在几秒钟内，想着，只要我得到的结果设置虚假的布尔变量等待....嗯，这将永远运行下去.. 。貌似收到什么。任何想法 ？谢谢你。

  //  - 样品无线网络实现 -  http://groups.google.com/group/android-developers/browse_thread/thread/f722d5f90cfae69
        IntentFilter的I =新的IntentFilter（）;
        i.addAction（WifiManager.SCAN_RESULTS_AVAILABLE_ACTION）;
            registerReceiver（新BroadcastReceiver的（）{
                @覆盖
                公共无效的onReceive（上下文C，意图我）{
                    // code时SCAN_RESULTS_AVAILABLE_ACTION事件发生时执行
                    mWifiManager =（WifiManager）c.getSystemService（Context.WIFI_SERVICE）;
                    无线= mWifiManager.getScanResults（）; //返回一个＆LT;列表＆gt; scanResults的
                    等待= FALSE;
                }
            }
        ，一世）;
        //  - 完无线样品


        mWifiManager.startScan（）;


        同时，（等待）{
            尝试 {
                视频下载（200）;
            }赶上（InterruptedException异常E）{
                // TODO自动生成的catch块
                e.printStackTrace（）;
            }
            Log.d（PROJECT1，无线WAITING）;
        }
 

解决方案

您需要实现一个BroadcastReceiver监听来自 WifiManager.startScan扫描结果返回（）。的onReceive（），您可以直接访问扫描resuls。 约需要1秒扫描完成并引发的onReceive（） ...

I'm trying to scan for wireless networks and found this helpful source on the net. Unfortunately it's not working and I have no idea why. My problem is that I can't wait 10 minutes for the result - I need them within a few seconds and thought about setting the boolean variable waiting on false as soon as I get a result.... well, it runs forever ... looks like nothing is received. Any idea ? Thanks.

// -- Sample WiFi implementation - http://groups.google.com/group/android-developers/browse_thread/thread/f722d5f90cfae69
        IntentFilter i = new IntentFilter();
        i.addAction(WifiManager.SCAN_RESULTS_AVAILABLE_ACTION);
            registerReceiver(new BroadcastReceiver(){
                @Override
                public void onReceive(Context c, Intent i){
                    // Code to execute when SCAN_RESULTS_AVAILABLE_ACTION event occurs
                    mWifiManager = (WifiManager) c.getSystemService(Context.WIFI_SERVICE);
                    wireless =  mWifiManager.getScanResults(); // Returns a <list> of scanResults
                    waiting = false;
                }
            }
        ,i);
        // -- End Wifi Sample 


        mWifiManager.startScan();


        while (waiting)  { 
            try {
                Thread.sleep(200);
            } catch (InterruptedException e) {
                // TODO Auto-generated catch block
                e.printStackTrace();
            }
            Log.d("PROJECT1","Wifi WAITING");
        }

解决方案

you need to implement a BroadcastReceiver listening for the scan results returned from WifiManager.startScan(). onReceive() allows you to access the scan resuls directly. it takes about 1 second for the scan to complete and trigger onReceive()...

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