WiFi直连热点连接（KOTLIN/ANDROID）

以下是一个使用Kotlin和Android的示例代码，显示如何使用WiFi直连热点连接：

首先，在AndroidManifest.xml文件中添加以下权限：

<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>

然后，创建一个名为WifiConnector的Kotlin类，其中包含以下方法：

import android.net.wifi.WifiConfiguration
import android.net.wifi.WifiManager

class WifiConnector(private val wifiManager: WifiManager) {

    fun connectToWifi(ssid: String, password: String): Boolean {
        val existingConfig = getExistingWifiConfiguration(ssid)
        val wifiConfig = createWifiConfiguration(ssid, password)

        return if (existingConfig != null) {
            wifiManager.disconnect()
            wifiManager.enableNetwork(existingConfig.networkId, true)
            wifiManager.reconnect()
        } else {
            val networkId = wifiManager.addNetwork(wifiConfig)
            wifiManager.disconnect()
            wifiManager.enableNetwork(networkId, true)
            wifiManager.reconnect()
        }
    }

    private fun getExistingWifiConfiguration(ssid: String): WifiConfiguration? {
        val existingNetworks = wifiManager.configuredNetworks ?: return null

        for (existingConfig in existingNetworks) {
            if (existingConfig.SSID == "\"$ssid\"") {
                return existingConfig
            }
        }

        return null
    }

    private fun createWifiConfiguration(ssid: String, password: String): WifiConfiguration {
        val wifiConfig = WifiConfiguration()
        wifiConfig.SSID = "\"$ssid\""
        wifiConfig.preSharedKey = "\"$password\""
        wifiConfig.allowedKeyManagement.set(WifiConfiguration.KeyMgmt.WPA_PSK)
        return wifiConfig
    }
}

最后，在Activity的代码中，你可以使用以下方式调用WifiConnector类：

import android.Manifest
import android.content.Context
import android.content.pm.PackageManager
import android.net.wifi.WifiManager
import androidx.appcompat.app.AppCompatActivity
import android.os.Bundle
import androidx.core.app.ActivityCompat
import androidx.core.content.ContextCompat

class MainActivity : AppCompatActivity() {

    private lateinit var wifiManager: WifiManager

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        setContentView(R.layout.activity_main)

        wifiManager = applicationContext.getSystemService(Context.WIFI_SERVICE) as WifiManager

        // 检查WiFi权限
        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_WIFI_STATE)
            != PackageManager.PERMISSION_GRANTED ||
            ContextCompat.checkSelfPermission(this, Manifest.permission.CHANGE_WIFI_STATE)
            != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions(this,
                arrayOf(Manifest.permission.ACCESS_WIFI_STATE, Manifest.permission.CHANGE_WIFI_STATE),
                1)
        } else {
            connectToWifi()
        }
    }

    private fun connectToWifi() {
        val wifiConnector = WifiConnector(wifiManager)
        wifiConnector.connectToWifi("Your_SSID", "Your_Password")
    }
}

请确保将“Your_SSID”和“Your_Password”替换为实际的WiFi网络名称和密码。

这是一个基本的示例，它将尝试连接到指定的WiFi热点。你可以根据自己的需求进行修改和扩展。