BlueStacks5模拟器中ConnectivityManager的回调函数不起作用。
在 BlueStacks 5 模拟器中，ConnectivityManager 在应用程序运行期间发生网络连接状态更改时会触发回调函数，但是有时候，回调函数不会被正确执行。要解决这个问题，可以检查应用程序是否正确注册了 ConnectivityManager 的回调函数，或者尝试使用 Handler 来确保回调函数在主线程中正确执行。
示例代码：
- 检查回调函数是否正确注册：
ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); NetworkRequest.Builder builder = new NetworkRequest.Builder(); builder.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); NetworkRequest request = builder.build(); ConnectivityManager.NetworkCallback callback = new ConnectivityManager.NetworkCallback() { @Override public void onAvailable(Network network) { Log.d(TAG, "onAvailable: " + network); } @Override public void onLost(Network network) { Log.d(TAG, "onLost: " + network); } }; cm.registerNetworkCallback(request, callback);
- 使用 Handler 确保回调函数在主线程中正确执行：
ConnectivityManager cm = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE); NetworkRequest.Builder builder = new NetworkRequest.Builder(); builder.addCapability(NetworkCapabilities.NET_CAPABILITY_INTERNET); NetworkRequest request = builder.build(); ConnectivityManager.NetworkCallback callback = new ConnectivityManager.NetworkCallback() { @Override public void onAvailable(Network network) { Handler handler = new Handler(getMainLooper()); handler.post(() -> { Log.d(TAG, "onAvailable: " + network); }); } @Override public void onLost(Network network) { Handler handler = new Handler(getMainLooper()); handler.post(() -> { Log.d(TAG, "onLost: " + network); }); } }; cm.registerNetworkCallback(request, callback);