Question

是否可以通过蓝牙将文件从一部Android手机传输到任何其他设备？如果可能，发送给我一个示例代码的链接......

switch (msg.what) {
            case MESSAGE_STATE_CHANGE:
                if(D) Log.i(TAG, "MESSAGE_STATE_CHANGE: " + msg.arg1);
                switch (msg.arg1) {
                case BluetoothChatService.STATE_CONNECTED:
                    mTitle.setText(R.string.title_connected_to);
                    mTitle.append(mConnectedDeviceName);
                    mConversationArrayAdapter.clear();
                    break;
                case BluetoothChatService.STATE_CONNECTING:
                    mTitle.setText(R.string.title_connecting);
                    break;
                case BluetoothChatService.STATE_LISTEN:
                case BluetoothChatService.STATE_NONE:
                    mTitle.setText(R.string.title_not_connected);
                    break;
                }
                break;
            case MESSAGE_WRITE:
                byte[] writeBuf = (byte[]) msg.obj;
                // construct a string from the buffer
                String writeMessage = new String(writeBuf);
                mConversationArrayAdapter.add("Me:  " + writeMessage);
                break;
            case MESSAGE_READ:
                byte[] readBuf = (byte[]) msg.obj;
                // construct a string from the valid bytes in the buffer
                String readMessage = new String(readBuf, 0, msg.arg1);
                mConversationArrayAdapter.add(mConnectedDeviceName+":  " + readMessage);
                break;
            case MESSAGE_DEVICE_NAME:
                // save the connected device's name
                mConnectedDeviceName = msg.getData().getString(DEVICE_NAME);
                Toast.makeText(getApplicationContext(), "Connected to "
                               + mConnectedDeviceName, Toast.LENGTH_SHORT).show();
                break;
            case MESSAGE_TOAST:
                Toast.makeText(getApplicationContext(), msg.getData().getString(TOAST),
                               Toast.LENGTH_SHORT).show();
                break;

Answer 1

如果要传输文件，您可以使用意图显式调用ACTION_SEND，如下所示。

您可以通过以下两种方式通过obex将文件发送到配对设备：

使用ACTION_SEND意图，将弹出一个菜单，其中包含可以处理您要发送的文件类型的应用程序，用户需要从中选择蓝牙，然后选择设备。

Intent i = new Intent(Intent.ACTION_SEND); i.setType("image/jpeg");    
i.putExtra(Intent.EXTRA_STREAM, Uri.parse("/sdcard/file.jpg")); 
startActivity(Intent.createChooser(i, "Send Image"));

更多访问

Bluetooth Android Docs

通过蓝牙传输文件

1 个答案: