Java 我想将数据从pc传输到我正在使用以下代码的android手机，我无法获取工作目录

代码中出现以下错误：

java.io.IOException:运行exec时出错。命令：[/adb，-s，9774d56d682e549c，push，C:\Documents，and，Settings\My，Documents\other\music\b.wma\sdcard\music]工作目录：null环境：null

public class TransferData extends Activity {

private String device_id  ;
private String from = "C:\\Documents and Settings\\My Documents\\other\\music\\b.wma ";
private String to ="\\sdcard\\music";
 private static final String ADB_PUSH = "\"" /*+ Utility.getWorkDir()*/ + File.separator + "adb\" -s %s push \"%s\" %s";
   @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.splash);
     device_id = Secure.getString(getBaseContext().getContentResolver(),Secure.ANDROID_ID); 

     push(device_id,from,to);
}
   /**  Pushes a file to a connected device via ADB
    * @param deviceId Device serial number 
    * @param from Path of source file (on PC)  
    * @param to Path of file destination (on device)  */
   public static void push(String deviceId, String from, String to) {
    try { 




        String cmd = String.format(ADB_PUSH, deviceId, from, to);
        System.out.println("adb push: " + cmd);
        Process p = Runtime.getRuntime().exec(cmd);
        InputStream is = p.getInputStream();
        InputStreamReader isr = new InputStreamReader(is);
        BufferedReader br = new BufferedReader(isr);
        String line;
        while ((line = br.readLine()) != null) {
            System.out.println("adb: " + line);
            }
        } catch (IOException e) {
            System.out.println(e);
            }
        } 

---

}

您无法从android访问计算机磁盘驱动器

只需将b.wma保存在资产文件夹中

然后使用以下代码来使用b.wma

---

希望这对您有所帮助。

通往b.wma的路径之间有空格。尝试将其移动到没有任何空格的路径。thanx tanmay但是如果我想传输文件或文件夹，我应该怎么做？vindaaron您不能将文件或文件夹传输到android应用程序。唯一的方法是您必须在apk中打包文件或文件夹，或者在运行时从服务器使用文件或文件夹。

 try {
    InputStream  is = context.getAssets().open(url);
    } catch (IOException e) {
    // TODO Auto-generated catch block
    e.printStackTrace();
      }