工作随笔---WiFi开发（3）---WIFIScanList类

1.前言

2.开发流程

(1).在画面onResume()时，通过handler来启动热点扫描以及数据刷新。

public List<ScanResult> m_scannedAP = new ArrayList<ScanResult>();
private Timer m_timer = null;
private TimerTask m_task = null;
private SysManagerWIFIUtil m_wifiUtil = null;

new Handler().postDelayed(new Runnable() {

@Override
public void run() {
m_wifiUtil.startScan();
getUpdateNetWorkList(); // get scannedAP List
m_listView.notifyDataSetChanged();
}
}, 100);

startTimer();//定时刷新画面上热点

public  synchronized void getUpdateNetWorkList() {
m_scannedAP.clear();
if (m_scannedAP == null) {
m_scannedAP = new ArrayList<ScanResult>();
}
List<ScanResult> result = m_wifiUtil.getWifiList();
//获取已经保存的热点列表
List<WifiRegisteredAP> device = m_wifiAPUtil.getM_registeredAP();
SysLog.out(TAG, "getUpdateNetWorkList", "registeredAPList="+device.size());
if (null != device) {

for(int i = 0;i<device.size();i++){
WifiRegisteredAP reAp = device.get(i);
if (null != reAp) {
String SSID = reAp.getmConfig().SSID;
String BSSID = reAp.getRegisteredAPBssid();
int TYPE = m_wifiUtil.getSecurityType(reAp.getmConfig());
int timestamp = reAp.getTimestamp();
if (null != result) {
for (int j = 0; j < result.size(); j++) {
ScanResult scAp = result.get(j);
if (null != scAp) {
String scBssid = scAp.BSSID;
String scSsid = scAp.SSID;
int scType = m_wifiUtil.wifiType(scAp.capabilities);
if ((-1 != scType) && (null != scSsid) && (null != scBssid)) {
//                                  SysLog.out(TAG, "SYS_VIEW_MENU_COM_ScannedAP  getUpdateNetWorkList",
//                                          "scType=" + scType+", Type="+TYPE+", scSsid="+scSsid+", SSID="+m_wifiUtil.dealSSID(SSID)+", scBssid="+scBssid+", BSSID="+BSSID);
if ((scType == TYPE)
&& scSsid.equals(m_wifiAdmin.dealSSID(SSID))
&& (0 < timestamp)
&& scBssid.equals(BSSID)) {
result.remove(j);
break;

}else{
continue;
}
}

}

}

}

}

}

}else{
SysLog.out(TAG, "SYS_VIEW_MENU_COM_ScannedAP  getAllNetWorkList", "saved device is null !!!");
}

for (ScanResult sc : result) {
if (null != sc) {
String scSsid = sc.SSID;
if (((scSsid.length() >= 1) && (scSsid.length() <= 32))
&& (m_wifiUtil.judgeSSID(scSsid))) {
m_scannedAP.add(sc);
}
}
}

Collections.sort(m_scannedAP, new MyCompartor());

m_wifiAPUtil.setM_scannedAP(m_scannedAP);

SysLog.out(TAG, "SYS_VIEW_MENU_COM_ScannedAP  getAllNetWorkList",
"scannedAPSize=" + m_scannedAP.size());
}

private class MyCompartor implements Comparator {

@Override
public int compare(Object arg0, Object arg1) {
ScanResult previousAP = (ScanResult) arg0;
ScanResult nextAP = (ScanResult) arg1;
int prelevel = m_wifiAPUtil
.calculateSignalLevel(previousAP.level, 5);
int nextlevel = m_wifiAPUtil.calculateSignalLevel(nextAP.level, 5);
if (prelevel != nextlevel) {
return Integer.valueOf(nextlevel).compareTo(
Integer.valueOf(prelevel));
} else {
return previousAP.SSID.compareTo(nextAP.SSID);
}
}

}

private void removeTimer(){
if (m_task != null) {
m_task.cancel();
m_task = null;
}
if (m_timer != null) {
m_timer.cancel();
m_timer = null;
}
}

private void startTimer(){
m_timer = new Timer();
m_task = new TimerTask() {
@Override
public void run() {
m_wifiAPUtil.startScan();
m_handler.sendEmptyMessage(MESSAGEAUTOUPDATE);
}
};
if (m_task != null && m_timer != null) {
m_timer.schedule(m_task, 6000, 6000);
}
}

private Handler m_handler = new Handler() {

public void handleMessage(Message msg) {
switch (msg.what) {
case MESSAGEAUTOUPDATE:
getUpdateNetWorkList();
m_listView.notifyDataSetChanged();
SysLog.out(
TAG,
"COM_ScannedAP handleMessage",
"current time:"
+ (new SimpleDateFormat("yyyy-MM-dd HH:mm:ss"))
.format(new Date()));
break;

default:
break;
}
};
};

(2).画面正常显示扫描到的热点后，可以根据自己的选择Wifi热点，匹配正确的密码，连接wifi。连接热点时区分无加密热点和有加密的热点。

①无加密的热点

m_wifiUtil.disconnectWifi();
int isconnect = m_wifiUtil.addNetwork(scResult.SSID, "",
m_wifiUtil.wifiType(scResult.capabilities));
m_wifiAPUtil.setScBssid(scResult.BSSID);

SysLog.out(TAG, "COM_ScannedAP listViewListener", "netID="
+ isconnect);
if (isconnect > -1) {
int netID = isconnect;
m_wifiAPUtil.setNetID(netID);
SysManagerCommonIF.instance().dealWifiConnectTimeOut();
} else {
SysLog.out(TAG,
"COM_ScannedAP onItemClickForIDPosition",
"connect failure");
}

②有加密的热点

if (WifiManager.WIFI_STATE_ENABLED == m_wifiUtil.checkState()) {
m_wifiUtil.disconnectWifi();
int sta = m_wifiUtil.addNetwork(
m_scanedAPList.get(pos).SSID, input,
wifiType(m_scanedAPList.get(pos).capabilities));
m_wifiAPUtil.setScBssid(m_scanedAPList
.get(pos).BSSID);

setScreenType();

if (sta > -1) {
SysLog.out(TAG,
"COM_PassWordEntry IButtonActionListener",
"netWorkID=" + sta);
netID = sta;
m_wifiAPUtil.setNetID(netID);
m_wifiAPUtil.setPasswordForward(true);

}
else {
SysLog.out(TAG,
"COM_PassWordEntry IButtonActionListener",
"connect failure(input error)");
}
}