要通过WiFi编程连接Android设备,可以使用以下步骤:
import android.content.Context;
import android.net.ConnectivityManager;
import android.net.Network;
import android.net.NetworkCapabilities;
import android.net.NetworkRequest;
import android.net.wifi.WifiConfiguration;
import android.net.wifi.WifiManager;
import android.os.Build;
import android.util.Log;
public class WiFiConnector {
private static final String TAG = "WiFiConnector";
private Context mContext;
private WifiManager mWifiManager;
private ConnectivityManager.NetworkCallback mNetworkCallback;
public WiFiConnector(Context context) {
mContext = context;
mWifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
}
public void connectToWiFi(String ssid, String password) {
if (mWifiManager.isWifiEnabled()) {
connectToNetwork(ssid, password);
} else {
enableWiFiAndConnect(ssid, password);
}
}
private void enableWiFiAndConnect(final String ssid, final String password) {
WifiManager wifiManager = (WifiManager) mContext.getSystemService(Context.WIFI_SERVICE);
if (wifiManager != null) {
wifiManager.setWifiEnabled(true);
mNetworkCallback = new ConnectivityManager.NetworkCallback() {
@Override
public void onAvailable(Network network) {
super.onAvailable(network);
connectToNetwork(ssid, password);
mContext.getSystemService(ConnectivityManager.class).unregisterNetworkCallback(mNetworkCallback);
}
};
ConnectivityManager.NetworkCallback networkCallback = new ConnectivityManager.NetworkCallback() {
@Override
public void onAvailable(Network network) {
super.onAvailable(network);
connectToNetwork(ssid, password);
mContext.getSystemService(ConnectivityManager.class).unregisterNetworkCallback(this);
}
};
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
ConnectivityManager connectivityManager = mContext.getSystemService(ConnectivityManager.class);
NetworkRequest.Builder builder = new NetworkRequest.Builder();
connectivityManager.requestNetwork(builder.build(), networkCallback);
} else {
wifiManager.setWifiEnabled(true);
wifiManager.reconnect();
}
}
}
private void connectToNetwork(String ssid, String password) {
WifiConfiguration wifiConfig = new WifiConfiguration();
wifiConfig.SSID = "\"" + ssid + "\"";
wifiConfig.preSharedKey = "\"" + password + "\"";
wifiConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK);
int netId = mWifiManager.addNetwork(wifiConfig);
mWifiManager.disconnect();
mWifiManager.enableNetwork(netId, true);
mWifiManager.reconnect();
}
}
WiFiConnector wiFiConnector = new WiFiConnector(this);
wiFiConnector.connectToWiFi("SSID", "password");
请注意,这只是一个简单的示例,仅用于连接到WiFi网络。在实际的应用中,你可能会添加错误处理,以及其他相关功能。