wifi工具类

秒速五厘米 2023-10-14 13:46 21阅读 0赞

import android.annotation.SuppressLint;
    import android.content.BroadcastReceiver;
    import android.content.Context;
    import android.content.Intent;
    import android.content.IntentFilter;
    import android.net.ConnectivityManager;
    import android.net.Network;
    import android.net.NetworkCapabilities;
    import android.net.NetworkRequest;
    import android.net.wifi.ScanResult;
    import android.net.wifi.WifiConfiguration;
    import android.net.wifi.WifiManager;
    import android.net.wifi.WifiNetworkSpecifier;
    import android.net.wifi.WifiNetworkSuggestion;
    import android.os.Build;
    import android.util.Log;
    
    import androidx.annotation.NonNull;
    
    import java.util.ArrayList;
    import java.util.List;
    
    public class EasyWifi {
    
        private static final String TAG = EasyWifi.class.getSimpleName();
    
        private final ConnectivityManager connectivityManager;//连接管理者
    
        private final WifiManager wifiManager;//Wifi管理者
    
        private WifiConnectCallback wifiConnectCallback;
    
        @SuppressLint("StaticFieldLeak")
        private static volatile EasyWifi mInstance;
    
        private final Context mContext;
    
        public EasyWifi(Context context) {
            mContext = context;
            wifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
            connectivityManager = (ConnectivityManager) mContext.getSystemService(Context.CONNECTIVITY_SERVICE);
        }
    
        public static EasyWifi initialize(Context context) {
            if (mInstance == null) {
                synchronized (EasyWifi.class) {
                    if (mInstance == null) {
                        mInstance = new EasyWifi(context);
                    }
                }
            }
            return mInstance;
        }
    
        public void setWifiConnectCallback(WifiConnectCallback wifiConnectCallback) {
            this.wifiConnectCallback = wifiConnectCallback;
        }
    
        /**
         * 连接Wifi
         *
         * @param scanResult 扫描结果
         * @param password   密码
         */
        public void connectWifi(ScanResult scanResult, String password) {
            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.Q) {
                connectByNew(scanResult.SSID, password);
            } else {
                connectByOld(scanResult, password);
            }
        }
    
        /**
         * Android 10 以下使用
         *
         * @param scanResult 扫描结果
         * @param password   密码
         */
        private void connectByOld(ScanResult scanResult, String password) {
            String ssid = scanResult.SSID;
            boolean isSuccess;
            WifiConfiguration configured = isExist(ssid);
            if (configured != null) {
                //在配置表中找到了，直接连接
                isSuccess = wifiManager.enableNetwork(configured.networkId, true);
            } else {
                WifiConfiguration wifiConfig = createWifiConfig(ssid, password, getCipherType(scanResult.capabilities));
                int netId = wifiManager.addNetwork(wifiConfig);
                isSuccess = wifiManager.enableNetwork(netId, true);
            }
            Log.d(TAG, "connectWifi: " + (isSuccess ? "成功" : "失败"));
        }
    
        /**
         * Android 10及以上版本使用此方式连接Wifi
         *
         * @param ssid     名称
         * @param password 密码
         */
        @SuppressLint("NewApi")
        private void connectByNew(String ssid, String password) {
            WifiNetworkSpecifier wifiNetworkSpecifier = new WifiNetworkSpecifier.Builder()
                    .setSsid(ssid)
                    .setWpa2Passphrase(password)
                    .build();
            //网络请求
            NetworkRequest request = new NetworkRequest.Builder()
                    .addTransportType(NetworkCapabilities.TRANSPORT_WIFI)
                    .removeCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET)
                    .addCapability(NetworkCapabilities.NET_CAPABILITY_NOT_RESTRICTED)
                    .addCapability(NetworkCapabilities.NET_CAPABILITY_TRUSTED)
                    .setNetworkSpecifier(wifiNetworkSpecifier)
                    .build();
            //网络回调处理
            ConnectivityManager.NetworkCallback networkCallback = new ConnectivityManager.NetworkCallback() {
                @Override
                public void onAvailable(@NonNull Network network) {
                    super.onAvailable(network);
                    if (wifiConnectCallback != null) {
                        wifiConnectCallback.onSuccess(network);
                    }
                }
    
                @Override
                public void onUnavailable() {
                    super.onUnavailable();
                    if (wifiConnectCallback != null) {
                        wifiConnectCallback.onFailure();
                    }
                }
            };
            //请求连接网络
            connectivityManager.requestNetwork(request, networkCallback);
        }
    
        @SuppressLint("NewApi")
        private void connectBySug(String ssid, String password) {
            WifiNetworkSuggestion suggestion = new WifiNetworkSuggestion.Builder()
                    .setSsid(ssid)
                    .setWpa2Passphrase(password)
                    .setIsAppInteractionRequired(true)
                    .build();
            List<WifiNetworkSuggestion> suggestionList = new ArrayList<>();
            suggestionList.add(suggestion);
            int status = wifiManager.addNetworkSuggestions(suggestionList);
            if (status != WifiManager.STATUS_NETWORK_SUGGESTIONS_SUCCESS) {
                return;
            }
            IntentFilter intentFilter = new IntentFilter(WifiManager.ACTION_WIFI_NETWORK_SUGGESTION_POST_CONNECTION);
            BroadcastReceiver wifiScanReceiver = new BroadcastReceiver() {
    
                @Override
                public void onReceive(Context context, Intent intent) {
                    if (!intent.getAction().equals(WifiManager.ACTION_WIFI_NETWORK_SUGGESTION_POST_CONNECTION)) {
                        return;
                    }
                }
            };
            mContext.registerReceiver(wifiScanReceiver, intentFilter);
        }
    
        /**
         * 创建Wifi配置
         *
         * @param ssid     名称
         * @param password 密码
         * @param type     类型
         */
        private WifiConfiguration createWifiConfig(String ssid, String password, WifiCapability type) {
            WifiConfiguration config = new WifiConfiguration();
            config.allowedAuthAlgorithms.clear();
            config.allowedGroupCiphers.clear();
            config.allowedKeyManagement.clear();
            config.allowedPairwiseCiphers.clear();
            config.allowedProtocols.clear();
            config.SSID = "\"" + ssid + "\"";
            WifiConfiguration configured = isExist(ssid);
            if (configured != null) {
                wifiManager.removeNetwork(configured.networkId);
                wifiManager.saveConfiguration();
            }
    
            //不需要密码的场景
            if (type == WifiCapability.WIFI_CIPHER_NO_PASS) {
                config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
                //以WEP加密的场景
            } else if (type == WifiCapability.WIFI_CIPHER_WEP) {
                config.hiddenSSID = true;
                config.wepKeys[0] = "\"" + password + "\"";
                config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.OPEN);
                config.allowedAuthAlgorithms.set(WifiConfiguration.AuthAlgorithm.SHARED);
                config.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.NONE);
                config.wepTxKeyIndex = 0;
                //以WPA加密的场景，自己测试时，发现热点以WPA2建立时，同样可以用这种配置连接
            } else if (type == WifiCapability.WIFI_CIPHER_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.allowedGroupCiphers.set(WifiConfiguration.GroupCipher.CCMP);
                config.allowedPairwiseCiphers.set(WifiConfiguration.PairwiseCipher.CCMP);
                config.status = WifiConfiguration.Status.ENABLED;
            }
            return config;
        }
    
        /**
         * 网络是否连接
         */
        public static boolean isNetConnected(ConnectivityManager connectivityManager) {
            return connectivityManager.getActiveNetwork() != null;
        }
    
        /**
         * 连接网络类型是否为Wifi
         */
        public static boolean isWifi(ConnectivityManager connectivityManager) {
            if (connectivityManager.getActiveNetwork() == null) {
                return false;
            }
            NetworkCapabilities networkCapabilities = connectivityManager.getNetworkCapabilities(connectivityManager.getActiveNetwork());
            if (networkCapabilities != null) {
                return false;
            }
            return networkCapabilities.hasTransport(NetworkCapabilities.TRANSPORT_WIFI);
        }
    
        /**
         * 配置表是否存在对应的Wifi配置
         * @param SSID
         * @return
         */
        @SuppressLint("MissingPermission")
        private WifiConfiguration isExist(String SSID) {
            List<WifiConfiguration> existingConfigs = wifiManager.getConfiguredNetworks();
            for (WifiConfiguration existingConfig : existingConfigs) {
                if (existingConfig.SSID.equals("\"" + SSID + "\"")) {
                    return existingConfig;
                }
            }
            return null;
        }
    
        private WifiCapability getCipherType(String capabilities) {
            if (capabilities.contains("WEB")) {
                return WifiCapability.WIFI_CIPHER_WEP;
            } else if (capabilities.contains("PSK")) {
                return WifiCapability.WIFI_CIPHER_WPA;
            } else if (capabilities.contains("WPS")) {
                return WifiCapability.WIFI_CIPHER_NO_PASS;
            } else {
                return WifiCapability.WIFI_CIPHER_NO_PASS;
            }
        }
    
        /**
         * wifi连接回调接口
         */
        public interface WifiConnectCallback {
    
            void onSuccess(Network network);
    
            void onFailure();
        }
    
        public enum WifiCapability {
            WIFI_CIPHER_WEP, WIFI_CIPHER_WPA, WIFI_CIPHER_NO_PASS
        }
    }

忘哪儿看到的了,保存一下