我正在尝试显示导航抽屉的标题，它显示正常，但问题是当我试图点击导航抽屉中的第一个项目时，它将显示Queues.class而不是预期的类。当点击导航抽屉应用程序中的最后一项时会崩溃。我只想在导航抽屉中显示标题，最后一项单击将显示正确的活动。也是问题是标题显示两次。
package com.abc;
//import android.app.Activity;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.R.*;
import android.app.ActionBar;
import android.app.Activity;
import android.app.Dialog;
import android.content.Intent;
import android.graphics.Color;
import android.graphics.drawable.ColorDrawable;
import android.os.AsyncTask;
import android.os.BaseBundle;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.util.Log;
import android.view.Gravity;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.view.Window;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.ArrayAdapter;
import android.widget.FrameLayout;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;
public class navigation_drawer_class extends Activity
//public class navigation_drawer_class extends ListActivity
{
private static final int Copy = 0;
int a =0;
public static FrameLayout frameLayout;
TextView mytextview;
public static ListView mDrawerList;
public DrawerLayout mDrawerLayout;
String Fullname;
protected String[] listArray = {"Home","Queue","Inbox","Create Ticket","Search","Clients","App settings"};
protected static int position;
private static boolean isLaunch = true;
//*****************************************
JSONObject post_details_obj,post_obj;
public static String FIRST_NAME="first_name",LAST_NAME="last_name";
JSONArray staff_data_array;
//*****************************************
private ActionBarDrawerToggle actionBarDrawerToggle;
Operation op=new Operation();
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//------------------ THIS ONE -------------------------
getActionBar().setHomeAsUpIndicator(R.drawable.crop3);//THIS ONE FOR THE DRAWER LOGO
//--------------------- THIS ONE ----------------------
frameLayout = (FrameLayout)findViewById(R.id.content_frame);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.left_drawer);
/// mDrawerList.setAdapter(null);
//***************** To Set the Welcome client ******************************************
//========= THIS ONE ===============
new getname().execute();
//========= THIS ONE ===============
/* mDrawerList.setAdapter(null);
View header = (View)getLayoutInflater().inflate(R.layout.headerview,null);
TextView headerValue = (TextView) header.findViewById(R.id.headerview_id);
headerValue.setText("Mydata");
mDrawerList.addHeaderView(header, null, false);//addHeaderView(header, null, false)
*/
/* TextView tv=new TextView(getApplicationContext());
Log.d("Fullname in oncreate : ",Fullname.toString());
tv.setText(Fullname); */
//******************To Set the Welcome client ******************************************
mDrawerList.setAdapter(new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, listArray));
mDrawerList.setOnItemClickListener(new OnItemClickListener()
{
@Override
public void onItemClick(AdapterView<?> parent, View view,
int position, long id) {
openActivity(position);
}
});
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
actionBarDrawerToggle = new ActionBarDrawerToggle(
this, // host Activity
mDrawerLayout, // DrawerLayout object
R.drawable.ic_launcher, // nav drawer image to replace 'Up' caret
R.string.open_drawer, // "open drawer" description for accessibility
R.string.close_drawer) // "close drawer" description for accessibility
{
@Override
public void onDrawerClosed(View drawerView)
{
getActionBar().setTitle(listArray[position]);
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
super.onDrawerClosed(drawerView);
}
@Override
public void onDrawerOpened(View drawerView)
{
getActionBar().setTitle(getString(R.string.app_name));
invalidateOptionsMenu(); // creates call to onPrepareOptionsMenu()
super.onDrawerOpened(drawerView);
}
@Override
public void onDrawerSlide(View drawerView, float slideOffset)
{
super.onDrawerSlide(drawerView, slideOffset);
}
@Override
public void onDrawerStateChanged(int newState)
{
super.onDrawerStateChanged(newState);
}
};
mDrawerLayout.setDrawerListener(actionBarDrawerToggle);
if(isLaunch){
isLaunch = false;
openActivity(0);
}
}
protected void openActivity(int position) {
// mDrawerList.setItemChecked(position, true);
// setTitle(listArray[position]);
mDrawerLayout.closeDrawer(mDrawerList);
navigation_drawer_class.position = position; //Setting currently selected position in this field so that it will be available in our child activities.
switch (position) {
case 0:
startActivity(new Intent(this, Folders.class));
break;
//case 2:
case 1:
Intent i=new Intent(navigation_drawer_class.this,Queues.class);
i.putExtra("set_queue","set");
startActivity(i);
break;
case 2:
//case 3:
Intent inbox=new Intent(navigation_drawer_class.this,Tickets.class);
inbox.putExtra("filter_id","&vis_filter_id=1");
inbox.putExtra("title","Inbox");
inbox.putExtra("set_queue","no");
startActivity(inbox);
break;
case 3:
//case 4:
startActivity(new Intent(this, New_Ticket_step1.class));
break;
case 4:
//case 5:
startActivity(new Intent(this, Search.class));
break;
case 5:
//case 6:
startActivity(new Intent(this, Client.class));
break;
case 6:
//case 7:
startActivity(new Intent(this, Settings.class));
break;
default:
break;
}
/*
switch (position) {
case 0:
break;
case 1:
startActivity(new Intent(this, Folders.class));
break;
case 2:
Intent i=new Intent(navigation_drawer_class.this,Queues.class);
i.putExtra("set_queue","set");
startActivity(i);
break;
case 3:
Intent inbox=new Intent(navigation_drawer_class.this,Tickets.class);
inbox.putExtra("filter_id","&vis_filter_id=1");
inbox.putExtra("title","Inbox");
inbox.putExtra("set_queue","no");
startActivity(inbox);
break;
case 4:
startActivity(new Intent(this, New_Ticket_step1.class));
break;
case 5:
startActivity(new Intent(this, Search.class));
break;
case 6:
startActivity(new Intent(this, Client.class));
break;
case 7:
startActivity(new Intent(this, Settings.class));
break;
default:
break;
}
*/
//Toast.makeText(this, "Selected Item Position::"+position, Toast.LENGTH_LONG).show();
}
@Override
public boolean onCreateOptionsMenu(Menu menu)
{
// getMenuInflater().inflate(R.menu.main, menu);
return super.onCreateOptionsMenu(menu);
}
@Override
public boolean onOptionsItemSelected(MenuItem item)
{
// The action bar home/up action should open or close the drawer.
// ActionBarDrawerToggle will take care of this.
if (actionBarDrawerToggle.onOptionsItemSelected(item))
{
return true;
}
switch (item.getItemId())
{
default:
return super.onOptionsItemSelected(item);
}
}
@Override
public boolean onPrepareOptionsMenu(Menu menu)
{
//boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
//menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
/* We can override onBackPressed method to toggle navigation drawer*/
@Override
public void onBackPressed()
{
if(mDrawerLayout.isDrawerOpen(mDrawerList))
{
mDrawerLayout.closeDrawer(mDrawerList);
}
else
{
mDrawerLayout.openDrawer(mDrawerList);
}
}
//-----------------------------------------------------------
private class getname extends AsyncTask<Void, Void, JSONArray>
{
Dialog dialog;
@Override
public void onPreExecute()
{
dialog = new Dialog(navigation_drawer_class.this,android.R.style.Theme_Translucent_NoTitleBar);
dialog.requestWindowFeature(Window.FEATURE_NO_TITLE);
dialog.setContentView(R.layout.progressbar);
dialog.show();
}
@Override
protected JSONArray doInBackground(Void... params)
{
String STAFF_URL=op.getUrl(getApplicationContext(),"staff","get_staff_details","");
staff_data_array = JSONfunctions.getJSONfromURL(STAFF_URL+"&vis_encode=json",navigation_drawer_class.this);
return staff_data_array;
}
@Override
public void onPostExecute(JSONArray staff_data_array)
{
super.onPostExecute(staff_data_array);
String staff_data_result =staff_data_array.toString();
try {
post_obj = staff_data_array.getJSONObject(0);
String fname=post_obj.getString(FIRST_NAME);
String lname=post_obj.getString(LAST_NAME);
//Fullname =fname+" "+lname;
Fullname =fname;
if(Fullname=="")
{
Fullname="Admin";
}
Fullname="Welcome "+Fullname;
View header = (View)getLayoutInflater().inflate(R.layout.headerview,null);
TextView headerValue = (TextView) header.findViewById(R.id.headerview_id);
headerValue.setText(Fullname);
mDrawerList.addHeaderView(header, null, false);//addHeaderView(header, null, false) */
} catch (JSONException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
dialog.dismiss();
}
}
//-----------------------------------------------------------
}