我已从this website
下载以下代码我可以成功登录filezilla客户端。但是，当我在此应用程序中键入相同的信息时，它显示（无法执行操作）。谁能帮我？
public class MainActivity extends Activity implements OnClickListener {
private static final String TAG = "MainActivity";
private static final String TEMP_FILENAME = "TAGtest.txt";
private Context cntx = null;
private MyFTPClientFunctions ftpclient = null;
private Button btnLoginFtp, btnUploadFile, btnDisconnect, btnExit;
private EditText edtHostName, edtUserName, edtPassword;
private ProgressDialog pd;
private String[] fileList;
private Handler handler = new Handler() {
public void handleMessage(android.os.Message msg) {
if (pd != null && pd.isShowing()) {
pd.dismiss();
}
if (msg.what == 0) {
getFTPFileList();
} else if (msg.what == 1) {
showCustomDialog(fileList);
} else if (msg.what == 2) {
Toast.makeText(MainActivity.this, "Uploaded Successfully!",
Toast.LENGTH_LONG).show();
} else if (msg.what == 3) {
Toast.makeText(MainActivity.this, "Disconnected Successfully!",
Toast.LENGTH_LONG).show();
} else {
Toast.makeText(MainActivity.this, "Unable to Perform Action!",
Toast.LENGTH_LONG).show();
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
cntx = this.getBaseContext();
edtHostName = (EditText) findViewById(R.id.edtHostName);
edtUserName = (EditText) findViewById(R.id.edtUserName);
edtPassword = (EditText) findViewById(R.id.edtPassword);
btnLoginFtp = (Button) findViewById(R.id.btnLoginFtp);
btnUploadFile = (Button) findViewById(R.id.btnUploadFile);
btnDisconnect = (Button) findViewById(R.id.btnDisconnectFtp);
btnExit = (Button) findViewById(R.id.btnExit);
btnLoginFtp.setOnClickListener(this);
btnUploadFile.setOnClickListener(this);
btnDisconnect.setOnClickListener(this);
btnExit.setOnClickListener(this);
// Create a temporary file. You can use this to upload
createDummyFile();
ftpclient = new MyFTPClientFunctions();
}
public void onClick(View v) {
switch (v.getId()) {
case R.id.btnLoginFtp:
if (isOnline(MainActivity.this)) {
connectToFTPAddress();
} else {
Toast.makeText(MainActivity.this,
"Please check your internet connection!",
Toast.LENGTH_LONG).show();
}
break;
case R.id.btnUploadFile:
pd = ProgressDialog.show(MainActivity.this, "", "Uploading...",
true, false);
new Thread(new Runnable() {
public void run() {
boolean status = false;
status = ftpclient.ftpUpload(
Environment.getExternalStorageDirectory()
+ "/TAGFtp/" + TEMP_FILENAME,
TEMP_FILENAME, "/", cntx);
if (status == true) {
Log.d(TAG, "Upload success");
handler.sendEmptyMessage(2);
} else {
Log.d(TAG, "Upload failed");
handler.sendEmptyMessage(-1);
}
}
}).start();
break;
case R.id.btnDisconnectFtp:
pd = ProgressDialog.show(MainActivity.this, "", "Disconnecting...",
true, false);
new Thread(new Runnable() {
public void run() {
ftpclient.ftpDisconnect();
handler.sendEmptyMessage(3);
}
}).start();
break;
case R.id.btnExit:
this.finish();
break;
}
}
private void connectToFTPAddress() {
final String host = edtHostName.getText().toString().trim();
final String username = edtUserName.getText().toString().trim();
final String password = edtPassword.getText().toString().trim();
if (host.length() < 1) {
Toast.makeText(MainActivity.this, "Please Enter Host Address!",
Toast.LENGTH_LONG).show();
} else if (username.length() < 1) {
Toast.makeText(MainActivity.this, "Please Enter User Name!",
Toast.LENGTH_LONG).show();
} else if (password.length() < 1) {
Toast.makeText(MainActivity.this, "Please Enter Password!",
Toast.LENGTH_LONG).show();
} else {
pd = ProgressDialog.show(MainActivity.this, "", "Connecting...",
true, false);
new Thread(new Runnable() {
public void run() {
boolean status = false;
status = ftpclient.ftpConnect(host, username, password, 21);
if (status == true) {
Log.d(TAG, "Connection Success");
handler.sendEmptyMessage(0);
} else {
Log.d(TAG, "Connection failed");
handler.sendEmptyMessage(-1);
}
}
}).start();
}
}
private void getFTPFileList() {
pd = ProgressDialog.show(MainActivity.this, "", "Getting Files...",
true, false);
new Thread(new Runnable() {
@Override
public void run() {
fileList = ftpclient.ftpPrintFilesList("/");
handler.sendEmptyMessage(1);
}
}).start();
}
public void createDummyFile() {
try {
File root = new File(Environment.getExternalStorageDirectory(),
"TAGFtp");
if (!root.exists()) {
root.mkdirs();
}
File gpxfile = new File(root, TEMP_FILENAME);
FileWriter writer = new FileWriter(gpxfile);
writer.append("Hi this is a sample file to upload for android FTP client example from TheAppGuruz!");
writer.flush();
writer.close();
Toast.makeText(this, "Saved : " + gpxfile.getAbsolutePath(),
Toast.LENGTH_LONG).show();
} catch (IOException e) {
e.printStackTrace();
}
}
private boolean isOnline(Context context) {
ConnectivityManager cm = (ConnectivityManager) context
.getSystemService(Context.CONNECTIVITY_SERVICE);
NetworkInfo netInfo = cm.getActiveNetworkInfo();
if (netInfo != null && netInfo.isConnected()) {
return true;
}
return false;
}
private void showCustomDialog(String[] fileList) {
// custom dialog
final Dialog dialog = new Dialog(MainActivity.this);
dialog.setContentView(R.layout.custom);
dialog.setTitle("/ Directory File List");
TextView tvHeading = (TextView) dialog.findViewById(R.id.tvListHeading);
tvHeading.setText(":: File List ::");
if (fileList != null && fileList.length > 0) {
ListView listView = (ListView) dialog
.findViewById(R.id.lstItemList);
ArrayAdapter<String> fileListAdapter = new ArrayAdapter<String>(
this, android.R.layout.simple_list_item_1, fileList);
listView.setAdapter(fileListAdapter);
} else {
tvHeading.setText(":: No Files ::");
}
Button dialogButton = (Button) dialog.findViewById(R.id.btnOK);
// if button is clicked, close the custom dialog
dialogButton.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
dialog.dismiss();
}
});
dialog.show();
}
}