WifiManager打开关闭Wifi以及搜索Wifi
Wifi的五种状态
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WifiManager.WIFI_STATE_ENABLED//已打开WifiManager.WIFI_STATE_DISABLING//正在关闭WifiManager.WIFI_STATE_ENABLING//正在打开WifiManager.WIFI_STATE_DISABLED//已关闭WifiManager.WIFI_STATE_UNKNOWN//未知?
一、打开关闭Wifi
?添加权限
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<uses-permissionandroid:name="android.permission.CHANGE_NETWORK_STATE"></uses-permission><uses-permissionandroid:name="android.permission.CHANGE_WIFI_STATE"></uses-permission><uses-permissionandroid:name="android.permission.ACCESS_NETWORK_STATE"></uses-permission><uses-permissionandroid:name="android.permission.ACCESS_WIFI_STATE"></uses-permission><uses-permissionandroid:name="android.permission.INTERNET"></uses-permission><uses-permissionandroid:name="android.permission.WAKE_LOCK"></uses-permission>?
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private ToggleButton toggleButton1;private WifiManager mWiFiManager01;public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.wifi);toggleButton1 = (ToggleButton)findViewById(R.id.toggleButton1);/* 以getSystemService取得WIFI_SERVICE */ mWiFiManager01 = (WifiManager) this.getSystemService(Context.WIFI_SERVICE); if(mWiFiManager01.getWifiState() == WifiManager.WIFI_STATE_ENABLED){ toggleButton1.setChecked(true); toggleButton1.setEnabled(true); } else if(mWiFiManager01.getWifiState() == WifiManager.WIFI_STATE_DISABLED){ toggleButton1.setChecked(false); toggleButton1.setEnabled(true); } else{ toggleButton1.setChecked(false); toggleButton1.setEnabled(false); } toggleButton1.setOnCheckedChangeListener(new ToggleButton.OnCheckedChangeListener(){public void onCheckedChanged(CompoundButton buttonView,boolean isChecked) {if(isChecked == true){mWiFiManager01.setWifiEnabled(true);}else{mWiFiManager01.setWifiEnabled(false);}} });}?
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二、搜索wifi
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private Button button1;private WifiManager mWiFiManager01;private SimpleAdapter listItemAdapter; // ListView的适配器private ArrayList<HashMap<String, Object>> listItem; // ListView的数据源，这里是一个HashMap的列表private ListView myList; // ListView控件public void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.wifi_connect);button1 = (Button) findViewById(R.id.button1);mWiFiManager01 = (WifiManager) this.getSystemService(Context.WIFI_SERVICE);mWiFiManager01.startScan();listItem = new ArrayList<HashMap<String, Object>>();listItemAdapter = new SimpleAdapter(this, listItem, R.layout.list_item,new String[] { "title", "text" }, new int[] { R.id.ItemTitle,R.id.ItemText });myList = (ListView) findViewById(R.id.list);myList.setAdapter(listItemAdapter);button1.setOnClickListener(new OnClickListener() {public void onClick(View v) {List<WifiConfiguration> wifiConf = mWiFiManager01.getConfiguredNetworks();if ((!mWiFiManager01.isWifiEnabled())&& (mWiFiManager01.getWifiState() != WifiManager.WIFI_STATE_ENABLING)) {mWiFiManager01.setWifiEnabled(true);}if (wifiConf.size() > 0) {int netWorkId = wifiConf.get(0).networkId;mWiFiManager01.enableNetwork(netWorkId, true);int index = 0;for (WifiConfiguration singleWifiConf : wifiConf) {addItem((index + 1) + " SSID." + singleWifiConf.SSID, "NetWorkID:"+ singleWifiConf.networkId);index = index + 1;}}}});}private void addItem(String title, String str) {HashMap<String, Object> map = new HashMap<String, Object>();map.put("title", title);map.put("text", str);listItem.add(map);listItemAdapter.notifyDataSetChanged();}?