android - 如何使用 Wifi Direct 在两部 Android 手机之间传输文件以下载 Android 手机目录而不是打包目录

Question

我代码中的以下行将 *.apk 文件传输到我的包目录。

 final File f = new File(Environment.getExternalStorageDirectory() + "/"
                        + context.getPackageName() + "/wifip2pshared-" + System.currentTimeMillis()
                        + ".apk");

如何修改它以便每次下载/传输到安卓手机的下载目录。我相信下载目录是每个安卓手机的默认目录。

目前它被转移到包目录，例如“com.example.android.wifidirect”

我根据 Manish 的解决方案进行的编辑:

@Override
        protected String doInBackground(Void... params) {
            try {
                ServerSocket serverSocket = new ServerSocket(8988);
                Log.d(WiFiDirectActivity.TAG, "Server: Socket opened");
                Socket client = serverSocket.accept();
                Log.d(WiFiDirectActivity.TAG, "Server: connection done");
                String extStorageDirectory = Environment
                        .getExternalStorageDirectory().toString();
                File folder = new File(extStorageDirectory, "Download");


File file = new File(folder,"wifip2pshared-" + System.currentTimeMillis()+ ".apk");
                try {
                    file.createNewFile();
                } catch (IOException e1) {
                    e1.printStackTrace();
                }


                Log.d(WiFiDirectActivity.TAG, "server: copying files " + file.toString());
                InputStream inputstream = client.getInputStream();
                copyFile(inputstream, new FileOutputStream(file));
                serverSocket.close();
                return file.getAbsolutePath();
            } catch (IOException e) {
                Log.e(WiFiDirectActivity.TAG, e.getMessage());
                return null;
            }
        }

Answer 1

请试试这段代码-

 File file = new File(Environment.getExternalStorageDirectory()
                .getAbsolutePath() + "/Download/wifip2pshared-" + System.currentTimeMillis()
                + ".apk");

编辑:您也可以尝试这段代码，希望它有助于每次创建不同的名称。

String extStorageDirectory = Environment
                    .getExternalStorageDirectory().toString();
            File folder = new File(extStorageDirectory, "Download");
            File file = new File(folder, wifip2pshared-" + System.currentTimeMillis()+ ".apk");
            try {
                file.createNewFile();
            } catch (IOException e1) {
                e1.printStackTrace();
            }

编辑 根据您的特定需求..

protected String doInBackground(Void... params) {
        try {
            ServerSocket serverSocket = new ServerSocket(8988);
            Log.d(WiFiDirectActivity.TAG, "Server: Socket opened");
            Socket client = serverSocket.accept();
            Log.d(WiFiDirectActivity.TAG, "Server: connection done");
            String extStorageDirectory = Environment.getExternalStorageDirectory().toString();
            File folder = new File(extStorageDirectory, "Download");
            File file = new File(folder,"wifixyz-" + System.currentTimeMillis()+".apk");
            try {
                file.createNewFile();
            } catch (IOException e1) {
                e1.printStackTrace();
            }

            Log.d(WiFiDirectActivity.TAG, "server: copying files " + file.toString());
            InputStream inputstream = client.getInputStream();
            copyFile(inputstream, new FileOutputStream(file));
            serverSocket.close();
            return file.getAbsolutePath();
        } catch (IOException e) {
            Log.e(WiFiDirectActivity.TAG, e.getMessage());
            return null;
        }
    }

谢谢!