WifiConfiguration已废弃，用WifiNetworkSpecifier.Builder开启LocalOnlyHotspot失败求修复

你用错了核心API：WifiNetworkSpecifier.Builder是用来连接已存在的WiFi网络的，完全不是创建LocalOnlyHotspot的工具。创建本地热点需要使用Android 8.0（API 26）开始提供的startLocalOnlyHotspot系列方法。

以下是适配不同Android版本的正确实现，包含权限处理和完整的热点创建/关闭逻辑：

1. 权限声明（在AndroidManifest.xml中添加） #

<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
<!-- Android 10+ 如需后台维持热点，需添加 -->
<uses-permission android:name="android.permission.ACCESS_BACKGROUND_LOCATION" />

2. 核心代码实现 #

public class HotspotManager {
    private WifiManager.LocalOnlyHotspotReservation hotspotReservation;

    public void turnOnLocalOnlyHotspot(Context context) {
        // 先检查位置权限，无权限则动态申请
        if (ContextCompat.checkSelfPermission(context, Manifest.permission.ACCESS_FINE_LOCATION)
                != PackageManager.PERMISSION_GRANTED) {
            ActivityCompat.requestPermissions((Activity) context,
                    new String[]{Manifest.permission.ACCESS_FINE_LOCATION},
                    1001);
            return;
        }

        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
            // 先关闭已存在的热点
            if (hotspotReservation != null) {
                hotspotReservation.close();
                hotspotReservation = null;
            }

            if (Build.VERSION.SDK_INT <= Build.VERSION_CODES.R) {
                // Android 8.0-11 用ConnectivityManager创建热点
                ConnectivityManager connectivityManager =
                        (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
                connectivityManager.startLocalOnlyHotspot(new ConnectivityManager.LocalOnlyHotspotCallback() {
                    @Override
                    public void onStarted(@NonNull WifiManager.LocalOnlyHotspotReservation reservation) {
                        super.onStarted(reservation);
                        hotspotReservation = reservation;
                        // 获取系统自动生成的热点信息
                        WifiConfiguration config = reservation.getWifiConfiguration();
                        Log.d("Hotspot", "SSID: " + config.SSID + ", 密码: " + config.preSharedKey);
                        Toast.makeText(context, "本地热点已创建", Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void onFailed(int reason) {
                        super.onFailed(reason);
                        Toast.makeText(context, "热点创建失败，原因码: " + reason, Toast.LENGTH_SHORT).show();
                    }
                }, new Handler(Looper.getMainLooper()));
            } else {
                // Android 12+ 移至WifiManager管理
                WifiManager wifiManager = (WifiManager) context.getSystemService(Context.WIFI_SERVICE);
                wifiManager.startLocalOnlyHotspot(new WifiManager.LocalOnlyHotspotCallback() {
                    @Override
                    public void onStarted(@NonNull WifiManager.LocalOnlyHotspotReservation reservation) {
                        super.onStarted(reservation);
                        hotspotReservation = reservation;
                        WifiConfiguration config = reservation.getWifiConfiguration();
                        Log.d("Hotspot", "SSID: " + config.SSID + ", 密码: " + config.preSharedKey);
                        Toast.makeText(context, "本地热点已创建", Toast.LENGTH_SHORT).show();
                    }

                    @Override
                    public void onFailed(int reason) {
                        super.onFailed(reason);
                        Toast.makeText(context, "热点创建失败，原因码: " + reason, Toast.LENGTH_SHORT).show();
                    }
                }, new Handler(Looper.getMainLooper()));
            }
        } else {
            Toast.makeText(context, "系统版本低于Android 8.0，不支持本地热点", Toast.LENGTH_SHORT).show();
        }
    }

    // 主动关闭热点
    public void turnOffLocalOnlyHotspot() {
        if (hotspotReservation != null) {
            hotspotReservation.close();
            hotspotReservation = null;
        }
    }
}

3. 关键注意事项 #

• 权限是前提：创建LocalOnlyHotspot必须获取位置权限，且需运行时动态申请，否则会直接创建失败。
• 版本适配：Android 12+将热点管理逻辑从ConnectivityManager移至WifiManager，需分开处理。
• 热点参数由系统生成：LocalOnlyHotspot不支持手动指定SSID和密码，系统会自动生成安全的热点参数，可通过reservation.getWifiConfiguration()获取。

内容的提问来源于stack exchange，提问作者VISHAL KUMAVAT