在Android中通过编程方式访问Wifi，并动态检查权限访问

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

if (ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_WIFI_STATE) != PackageManager.PERMISSION_GRANTED
        || ContextCompat.checkSelfPermission(context, Manifest.permission.CHANGE_WIFI_STATE) != PackageManager.PERMISSION_GRANTED
        || ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION) != PackageManager.PERMISSION_GRANTED) {
    // 权限未被授予，需要向用户请求权限
    ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.ACCESS_WIFI_STATE, Manifest.permission.CHANGE_WIFI_STATE, Manifest.permission.ACCESS_FINE_LOCATION}, requestCode);
} else {
    // 权限已被授予，可以进行Wifi操作
    // TODO: 执行Wifi操作的代码
}

ActivityCompat.requestPermissions(activity, new String[]{Manifest.permission.ACCESS_WIFI_STATE, Manifest.permission.CHANGE_WIFI_STATE, Manifest.permission.ACCESS_FINE_LOCATION}, requestCode);

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    if (requestCode == requestCode) {
        if (grantResults.length > 0 && grantResults[0] == PackageManager.PERMISSION_GRANTED) {
            // 权限已被授予，可以进行Wifi操作
            // TODO: 执行Wifi操作的代码
        } else {
            // 权限被拒绝，无法进行Wifi操作
        }
    }
}

WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
if (wifiManager.isWifiEnabled()) {
    // Wifi已经打开，可以执行相应的操作
    // TODO: 执行Wifi操作的代码
} else {
    // Wifi未打开，可以使用wifiManager.setWifiEnabled(true)方法来打开Wifi
    wifiManager.setWifiEnabled(true);
}