import android.widget.ProgressBar;
import android.widget.RelativeLayout;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.Toast;
public class WifiListActivity extends Activity {
private ArrayList wifiArray;
private WiFiInfoAdapter wifiInfoAdapter;
private ListView listWifi;
private ProgressBar updateProgress;
private Button updateButton;
private String wifiPassword = null;
private WifiManager wifiManager;
private WifiAdmin wiFiAdmin;
private List list;
private ScanResult mScanResult;
private StringBuffer sb = new StringBuffer();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_wifi_list);
wiFiAdmin = new WifiAdmin(WifiListActivity.this);
initLayout();
getAllNetWorkList();
}
public void initLayout() {
listWifi = (ListView) findViewById(R.id.listWiFi);
RelativeLayout btnToSettingFromWiFi = (RelativeLayout) findViewById(R.id.btnToSettingFromWiFi);
btnToSettingFromWiFi.setOnClickListener(new MyOnClickListener());
// 刷新按钮和进度条
updateProgress = (ProgressBar) findViewById(R.id.updateProgress);
updateProgress.setVisibility(View.INVISIBLE);
updateButton = (Button) findViewById(R.id.updateButton);
updateButton.setVisibility(View.VISIBLE);
updateButton.setOnClickListener(new MyOnClickListener());
SwitchButton switchWifi = (SwitchButton) findViewById(R.id.switchWifi);
wifiManager = (WifiManager) getSystemService(Context.WIFI_SERVICE);
switchWifi.setChecked(wifiManager.isWifiEnabled());
switchWifi.setOnCheckedChangeListener(new OnCheckedChangeListener() {
@Override
public void onCheckedChanged(CompoundButton buttonView,
boolean isChecked) {
wifiManager.setWifiEnabled(isChecked);
// 更新WiFi列表
if (isChecked) {
listWifi.setVisibility(View.VISIBLE);
updateProgress.setVisibility(View.VISIBLE);
updateButton.setVisibility(View.INVISIBLE);
new Thread(new refreshWifiThread()).start();
} else {
listWifi.setVisibility(View.GONE);
}
}
});
}
final Handler refreshWifiHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
super.handleMessage(msg);
switch (msg.what) {
case 1:
getAllNetWorkList();
updateProgress.setVisibility(View.INVISIBLE);
updateButton.setVisibility(View.VISIBLE);
break;
default:
break;
}
}
};
public class refreshWifiThread implements Runnable {
@Override
public void run() {
try {
Thread.sleep(3000);
Message message = new Message();
message.what = 1;
refreshWifiHandler.sendMessage(message);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
private class MyOnClickListener implements OnClickListener {
@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.btnToSettingFromWiFi:
finish();
break;
case R.id.updateButton:
updateButton.setVisibility(View.INVISIBLE);
updateProgress.setVisibility(View.VISIBLE);
new Thread(new refreshWifiThread()).start();
break;
default:
break;
}
}
}
public void getAllNetWorkList() {
wifiArray = new ArrayList();
if (sb != null) {
sb = new StringBuffer();
}
wiFiAdmin.startScan();
list = wiFiAdmin.getWifiList();
if (list != null) {
for (int i = 0; i < list.size(); i++) {
mScanResult = list.get(i);
WifiInfo wifiInfo = new WifiInfo(mScanResult.BSSID,
mScanResult.SSID, mScanResult.capabilities,
mScanResult.level);
wifiArray.add(wifiInfo);
}
wifiInfoAdapter = new WiFiInfoAdapter(getApplicationContext(),
wifiArray);
listWifi.setAdapter(wifiInfoAdapter);
//
wiFiAdmin.getConfiguration();
listWifi.setOnItemClickListener(new AdapterView.OnItemClickListener() {
String wifiItemSSID = null;
public void onItemClick(android.widget.AdapterView<?> parent,
android.view.View view, int position, long id) {
Log.d(Constant.TAG, “BSSID:” + list.get(position).BSSID);
// 连接WiFi
wifiItemSSID = list.get(position).SSID;
int wifiItemId = wiFiAdmin.IsConfiguration(“”"
• list.get(position).SSID + “”");
if (wifiItemId != -1) {
if (wiFiAdmin.ConnectWifi(wifiItemId)) {
// 连接已保存密码的WiFi
Toast.makeText(getApplicationContext(), “正在连接”,
Toast.LENGTH_SHORT).show();
updateButton.setVisibility(View.INVISIBLE);
updateProgress.setVisibility(View.VISIBLE);
new Thread(new refreshWifiThread()).start();
}
} else {
// 没有配置好信息，配置
WifiPswDialog pswDialog = new WifiPswDialog(
WifiListActivity.this,
new OnCustomDialogListener() {
@Override
public void back(String str) {
wifiPassword = str;
if (wifiPassword != null) {
int netId = wiFiAdmin
.AddWifiConfig(list,
wifiItemSSID,
wifiPassword);
if (netId != -1) {
wiFiAdmin.getConfiguration();// 添加了配置信息，要重新得到配置信息
if (wiFiAdmin
.ConnectWifi(netId)) {
// 连接成功，刷新UI
updateProgress
.setVisibility(View.VISIBLE);
updateButton
.setVisibility(View.INVISIBLE);
new Thread(
new refreshWifiThread())
.start();
}
} else {
// 网络连接错误
}
} else {
}
}
});
pswDialog.show();
}
}
});
}
}
}
然后是WiFiAdmin：
package com.tchip.carlauncher.util;
import java.util.List;
import android.content.Context;
import android.net.wifi.ScanResult;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiInfo;
import android.net.wifi.WifiManager;
import android.net.wifi.WifiManager.WifiLock;
import android.util.Log;
public class WifiAdmin {
/**
• 定义一个WifiManager对象,提供Wifi管理的各种主要API，主要包含wifi的扫描、建立连接、配置信息等
*/
private WifiManager mWifiManager;
// WIFIConfiguration描述WIFI的链接信息，包括SSID、SSID隐藏、password等的设置
private List wifiConfigList;
// 定义一个WifiInfo对象
private WifiInfo mWifiInfo;
// 扫描出的网络连接列表
private List mWifiList;
// 网络连接列表
private List mWifiConfigurations;
WifiLock mWifiLock;
public static final int TYPE_NO_PASSWD = 0x11;
public static final int TYPE_WEP = 0x12;
public static final int TYPE_WPA = 0x13;
public WifiAdmin(Context context) {
// 获得WifiManager对象
mWifiManager = (WifiManager) context
.getSystemService(Context.WIFI_SERVICE);
// 取得WifiInfo对象
mWifiInfo = mWifiManager.getConnectionInfo();
}
/**
• 打开wifi
*/
public void openWifi() {
if (!mWifiManager.isWifiEnabled()) {
mWifiManager.setWifiEnabled(true);
}
}
/**
• 关闭wifi
*/
public void closeWifi() {
if (!mWifiManager.isWifiEnabled()) {
mWifiManager.setWifiEnabled(false);
}
}
/**
• 检查当前wifi状态
• 
• @return
*/
public int checkState() {
return mWifiManager.getWifiState();
}
/**
• 锁定wifiLock
*/
public void acquireWifiLock() {
mWifiLock.acquire();
}
/**
• 解锁wifiLock
*/
public void releaseWifiLock() {
// 判断是否锁定
if (mWifiLock.isHeld()) {
mWifiLock.acquire();
}
}
/**
• 创建一个wifiLock
*/
public void createWifiLock() {
mWifiLock = mWifiManager.createWifiLock(“test”);
}
/**
• 得到配置好的网络
• 
• @return
*/
public List getWiFiConfiguration() {
return mWifiConfigurations;
}
/**
• 指定配置好的网络进行连接
• 
• @param index
*/
public void connetionConfiguration(int index) {
if (index > mWifiConfigurations.size()) {
return;
}
// 连接配置好指定ID的网络
mWifiManager.enableNetwork(mWifiConfigurations.get(index).networkId,
true);
}