小编Pra*_*tik的帖子

我正在制作应该从用户数据生成文件的 flutter web 应用程序。并且可以选择下载输出文件。

但是我找不到任何适用于 flutter web 的选项/包:(

有人可以帮我吗？

我在连接蓝牙RfComm时遇到问题。我能够连接到蓝牙并进行通信，但有时无法连接。我正在使用标准的uuid-00001101-0000-1000-8000-00805F9B34FB

请帮帮我:)

 private class ConnectThread extends Thread {
    private BluetoothSocket mmSocket;
    private BluetoothDevice mmDevice;

    private ConnectThread(BluetoothDevice device) {
        Log.d(TAG, "in ConnectThread");
        // Use a temporary object that is later assigned to mmSocket,
        // because mmSocket is final
        BluetoothSocket tmp = null;
        mmDevice = device;
        // Get a BluetoothSocket to connect with the given BluetoothDevice
        try {
            Log.d(TAG, "createRfcommSocketToServiceRecord for " + mmDevice.getName());
            // MY_UUID is the app's UUID string, also used by the server code
            tmp = mmDevice.createRfcommSocketToServiceRecord(MY_UUID);
            //tmp = …