我正在从服务器读取文件。我的应用程序崩溃并且我的 logcat 也没有显示任何错误。在此之前我遇到了窗口泄漏错误，但是当我评论我的对话框代码时，我的 logcat 中没有任何错误。
服务器代码如下：
public class serv extends ListActivity {
private String m_urlString="http://192.168.1.30/muneem/muneem.php?path=./";
// private String result;
private List<String> m_item = null;
private List<String> m_path = null;
private String m_root="http://192.168.1.30/muneem/muneem.php?path=./";
private String m_result;
private TextView m_myPath;
static private String m_pos;
private String m_backposition;
private String m_fileURL;
int m_downloadedSize = 0;
int m_totalSize = 0;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.file_chooser);
View v= findViewById(R.id.rowtext);
m_myPath = (TextView)findViewById(R.id.path);
m_fileURL="http://192.168.1.30/muneem/";
Http_connection f=new Http_connection();
f.execute("");
}
class Http_connection extends AsyncTask<String, Void, Void> {
private Exception exception;
protected Void doInBackground(String... urls)
{
try
{
URL url= new URL(m_urlString);
HttpURLConnection con=(HttpURLConnection)url.openConnection();
con.setRequestMethod("GET");
con.connect();
int statusCode=con.getResponseCode();
if (statusCode==HttpURLConnection.HTTP_OK){
BufferedReader in= new BufferedReader(new InputStreamReader(con.getInputStream()));
String line;
m_result="";
while ((line=in.readLine())!=null)
{
m_result=m_result+"\n"+line;
}
in.close();
con.disconnect();
runOnUiThread(new Runnable() {
@Override
public void run() {
getDir(m_urlString);
}
});
}
}
catch (MalformedURLException e)
{
// bundle.putString("Error","Problem with URL");
}
catch (IOException e)
{
// bundle.putString("Error","Problem with connection");
}
return null;
}
}
private void getDir(String dirPath)
{
String[] r=m_result.split("/");
m_myPath.setText("Location: " + dirPath);
m_item = new ArrayList<String>();
m_path = new ArrayList<String>();
for (int k=0;k<r.length;k++)
{
if (r[k].contains("."))
{
m_item.add(r[k]);
}
else
{
m_item.add(r[k]+"/");
}
}
ArrayAdapter<String> fileList =
new ArrayAdapter<String>(serv.this, R.layout.row, m_item);
setListAdapter(fileList);
}
class getfile extends AsyncTask<String, Void, Void> {
private Exception exception;
protected Void doInBackground(String... urls)
{
int count=0;
try {
// urlSt="http://192.168.1.30/muneem/oglPrahova/prahova.GIS";
// URL uurl = new URL("http://192.168.1.30/muneem/oglPrahova/prahova.GIS");
URL uurl = new URL(m_fileURL);
BufferedReader in = new BufferedReader(new InputStreamReader(uurl.openStream()));
String text_file="";
String str;
while ((str = in.readLine()) != null) {
text_file=text_file+str;
}
in.close();
AppFuncs.g_path=text_file;
AppFuncs.g_urlstring=m_urlString;
}
MapActivity调用服务器代码如下：
public class Map extends Activity
{
//
private GraphicsView mGLView;
//private GisGLRenderer m_GisRenderer;
final static String RESULT_KEY="result";
final static int REQ_CODE=1001;
AlertDialog m=null;
public class LoadFile extends AsyncTask<String,String,String>
{
ProgressDialog Asycdialog = new ProgressDialog(Map.this);
@Override
protected void onPreExecute() {
//set message of the dialog
Asycdialog.setMessage("Loading File");
Asycdialog.setButton(DialogInterface.BUTTON_NEGATIVE,"Cancel",new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
//To change body of implemented methods use File | Settings | File Templates.
}
});
super.onPreExecute();
}
protected void onProgressUpdate(String ... progress)
{
}
protected String doInBackground(String ... Params)
{
Map.this.mGLView.LoadProjectFile(AppFuncs.g_path);
Map.this.mGLView.requestRender();
return null;
}
protected void onPostExecute(String result)
{
}
}
public void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_map);
mGLView = (GraphicsView) findViewById(R.id.glview);
}
public void bt_Open(View v)
{
AlertDialog.Builder builder=new AlertDialog.Builder(this);
builder.setTitle("Load File");
builder.setMessage("Choose an option to load file")
.setCancelable(false)
.setNegativeButton("Server",new DialogInterface.OnClickListener(){
public void onClick(DialogInterface dialog,int which)
{
Intent i= new Intent(Map.this,serv.class);
startActivityForResult(i,REQ_CODE);
}
}
)
.setPositiveButton("SDcard",new DialogInterface.OnClickListener()
{
public void onClick(DialogInterface dialog, int which)
{
Intent i= new Intent(Map.this,FileChooser.class);
startActivityForResult(i,REQ_CODE);
}
}
);
final AlertDialog a=builder.create();
a.show();
}
protected void onActivityResult(int requestCode, int resultCode,Intent data)
{
//super.onActivityResult(requestCode,resultCode,data);
if(requestCode==REQ_CODE)
{
if(resultCode==RESULT_OK && data.getExtras().containsKey(RESULT_KEY))
{
// Toast.makeText(this,data.getExtras().getString(RESULT_KEY),Toast.LENGTH_SHORT).show();
// this.mGLView.m_SelectedProjectPath = AppFuncs.path;
LoadFile f= new LoadFile();
f.execute("");
// this.mGLView.LoadProjectFile(AppFuncs.path);
}
}
}