Android WIFI開發,包含開啟WIFI,掃描列表。 自動連線指定WIFI等
阿新 • • 發佈:2019-01-05
本文章是在原文基礎上進行開發,,修改的 ,原文地址如下:
https://www.cnblogs.com/pied/p/3767336.html
開發中專案如下:
package stu.edu.cn.myapplication; 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 java.util.List; public class WifiAdmin { // 定義WifiManager物件 private WifiManager mWifiManager; // 定義WifiInfo物件 private WifiInfo mWifiInfo; // 掃描出的網路連線列表 private List<ScanResult> mWifiList; // 網路連線列表 private List<WifiConfiguration> mWifiConfiguration; // 定義一個WifiLock WifiManager.WifiLock mWifiLock; // 構造器 public WifiAdmin(Context context) { // 取得WifiManager物件 mWifiManager = (WifiManager) context .getSystemService(Context.WIFI_SERVICE); // 取得WifiInfo物件 mWifiInfo = mWifiManager.getConnectionInfo(); } // 開啟WIFI public void openWifi() { if (!mWifiManager.isWifiEnabled()) { boolean startOk= mWifiManager.setWifiEnabled(true); int i=0; i++; } } // 關閉WIFI public void closeWifi() { if (mWifiManager.isWifiEnabled()) { mWifiManager.setWifiEnabled(false); } } // 檢查當前WIFI狀態 public int checkState() { return mWifiManager.getWifiState(); } // 鎖定WifiLock public void acquireWifiLock() { mWifiLock.acquire(); } // 解鎖WifiLock public void releaseWifiLock() { // 判斷時候鎖定 if (mWifiLock.isHeld()) { mWifiLock.acquire(); } } // 建立一個WifiLock public void creatWifiLock() { mWifiLock = mWifiManager.createWifiLock("Test"); } // 得到配置好的網路 public List<WifiConfiguration> getConfiguration() { return mWifiConfiguration; } // 指定配置好的網路進行連線 public void connectConfiguration(int index) { // 索引大於配置好的網路索引返回 if (index > mWifiConfiguration.size()) { return; } // 連線配置好的指定ID的網路 mWifiManager.enableNetwork(mWifiConfiguration.get(index).networkId, true); } public void startScan() { mWifiManager.startScan(); // 得到掃描結果 mWifiList = mWifiManager.getScanResults(); // 得到配置好的網路連線 mWifiConfiguration = mWifiManager.getConfiguredNetworks(); } // 得到網路列表 public List<ScanResult> getWifiList() { return mWifiList; } // 檢視掃描結果 public StringBuilder lookUpScan() { StringBuilder stringBuilder = new StringBuilder(); for (int i = 0; i < mWifiList.size(); i++) { stringBuilder .append("Index_" + new Integer(i + 1).toString() + ":"); // 將ScanResult資訊轉換成一個字串包 // 其中把包括:BSSID、SSID、capabilities、frequency、level stringBuilder.append((mWifiList.get(i)).toString()); stringBuilder.append("----------------"); } return stringBuilder; } // 得到MAC地址 public String getMacAddress() { return (mWifiInfo == null) ? "NULL" : mWifiInfo.getMacAddress(); } // 得到接入點的BSSID public String getBSSID() { return (mWifiInfo == null) ? "NULL" : mWifiInfo.getBSSID(); } // 得到IP地址 public int getIPAddress() { return (mWifiInfo == null) ? 0 : mWifiInfo.getIpAddress(); } // 得到連線的ID public int getNetworkId() { return (mWifiInfo == null) ? 0 : mWifiInfo.getNetworkId(); } // 得到WifiInfo的所有資訊包 public String getWifiInfo() { return (mWifiInfo == null) ? "NULL" : mWifiInfo.toString(); } // 新增一個網路並連線 public void addNetwork(WifiConfiguration wcg) { int wcgID = mWifiManager.addNetwork(wcg); boolean b = mWifiManager.enableNetwork(wcgID, true); System.out.println("a--" + wcgID); System.out.println("b--" + b); } // 斷開指定ID的網路 public void disconnectWifi(int netId) { mWifiManager.disableNetwork(netId); mWifiManager.disconnect(); } /*//然後是一個實際應用方法,只驗證過沒有密碼的情況: public WifiConfiguration CreateWifiInfo(String SSID, String Password, int Type) { WifiConfiguration config = new WifiConfiguration(); config.allowedAuthAlgorithms.clear(); config.allowedGroupCiphers.clear(); config.allowedKeyManagement.clear(); config.allowedPairwiseCiphers.clear(); config.allowedProtocols.clear(); config.SSID = "/" + SSID + "/"; WifiConfiguration tempConfig = this.IsExsits(SSID); if(tempConfig != null) { mWifiManager.removeNetwork(tempConfig.networkId); } if(Type == 1) //WIFICIPHER_NOPASS { config.wepKeys[0] = ""; config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE); config.wepTxKeyIndex = 0; } if(Type == 2) //WIFICIPHER_WEP { config.hiddenSSID = true; config.wepKeys[0]= "/"+Password+"/"; config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104); config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE); config.wepTxKeyIndex = 0; } if(Type == 3) //WIFICIPHER_WPA { config.preSharedKey = "/"+Password+"/"; config.hiddenSSID = true; config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP); config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK); config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP); //config.allowedProtocols.set(WifiConfiguration.Protocol.WPA); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP); config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP); config.status = WifiConfiguration.Status.ENABLED; } return config; }*/ /*public WifiConfiguration CreateWifiInfo(String SSID, String Password, int Type) { WifiConfiguration config = new WifiConfiguration(); config.allowedAuthAlgorithms.clear(); config.allowedGroupCiphers.clear(); config.allowedKeyManagement.clear(); config.allowedPairwiseCiphers.clear(); config.allowedProtocols.clear(); config.SSID = "\"" + SSID + "\""; WifiConfiguration tempConfig = this.IsExsits(SSID); if (tempConfig != null) { mWifiManager.removeNetwork(tempConfig.networkId); } if (Type == 1) // WIFICIPHER_NOPASS { config.wepKeys[0] = ""; config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE); config.wepTxKeyIndex = 0; } if (Type == 2) // WIFICIPHER_WEP { config.hiddenSSID = true; config.wepKeys[0] = "\"" + Password + "\""; config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP40); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104); config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE); config.wepTxKeyIndex = 0; } if (Type == 3) // WIFICIPHER_WPA { config.preSharedKey = "\"" + Password + "\""; config.hiddenSSID = true; config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.TKIP); config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK); config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP); // config.allowedProtocols.set(WifiConfiguration.Protocol.WPA); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP); config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP); config.status = WifiConfiguration.Status.ENABLED; } return config; }*/ public WifiConfiguration CreateWifiInfo(ScanResult scan, String Password) { WifiConfiguration config = new WifiConfiguration(); config.hiddenSSID = false; config.status = WifiConfiguration.Status.ENABLED; if (scan.capabilities.contains("WEP")) { config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE); config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN); config.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.WEP104); config.SSID = "\"" + scan.SSID + "\""; config.wepTxKeyIndex = 0; config.wepKeys[0] = Password; } else if (scan.capabilities.contains("PSK")) { config.SSID = "\"" + scan.SSID + "\""; config.preSharedKey = "\"" + Password + "\""; } else if (scan.capabilities.contains("EAP")) { config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_EAP); config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN); config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.TKIP); config.allowedProtocols.set(WifiConfiguration.Protocol.WPA); config.SSID = "\"" + scan.SSID + "\""; config.preSharedKey = "\"" + Password + "\""; } else { config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE); config.SSID = "\"" + scan.SSID + "\""; config.preSharedKey = null; config.wepKeys[0] = "\"" + "\""; config.wepTxKeyIndex = 0; } config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);return config; } private WifiConfiguration IsExsits(String SSID) { List<WifiConfiguration> existingConfigs = mWifiManager.getConfiguredNetworks(); for (WifiConfiguration existingConfig : existingConfigs) { if (existingConfig.SSID.equals("/"+SSID+"/")) { return existingConfig; } } return null; } }
上面是公共類書寫。那個標紅的語句格外注意。。不加的話經常連不上。
許可權如下:
<uses-permission android:name="android.permission.CHANGE_NETWORK_STATE" ></uses-permission> <uses-permission android:name="android.permission.CHANGE_WIFI_STATE" ></uses-permission> <uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" ></uses-permission> <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" ></uses-permission>
呼叫方法如下:
WifiAdmin wifiAdmin = new WifiAdmin(this); wifiAdmin.openWifi(); wifiAdmin.startScan(); tv.setText(wifiAdmin.lookUpScan()); for(int i=0;i<wifiAdmin.getWifiList().size();i++){ String name=wifiAdmin.getWifiList().get(i).SSID; if(wifiAdmin.getWifiList().get(i).SSID.equals("wifi小孫")){ wifiAdmin.addNetwork(wifiAdmin.CreateWifiInfo(wifiAdmin.getWifiList().get(i),"12345678a")); break; } }