Comment mettre en œuvre le bouton SetOnClickListener dans un fragment?

Je travaille sur un petit projet et je veux utiliser un Curseur de Menu. Longue histoire courte, j'arrive à trouver un code source d'un curseur de menu à l'aide de tiroir de certains site web et il fonctionne très bien sur mon appareil. Cependant, je suis un peu confus de la migration de mon activité précédente en ce curseur menu, car ils utilisent fragment pour chaque élément dans la liste.

Aux choses simples, je veux migrer une activité capable de faire un Ping de fonction. c'est fichier xml composé d'un EditText, un Bouton et un TextView pour montrer la sortie.

Maintenant j'ai réussi à "succès" de la migration de l'activité dans ce fragment. Le tiroir fonctionne bien, mais je me suis coincé parce que l'application de la force de fermer après que j'ai cliqué sur le bouton ping.

PS: je n'ai pas changer le nom de la classe mais, pardonnez-moi

Sont ci-dessous mon code:

c'est mon premier Ping activité:

package my.jlm;
import java.io.IOException;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.net.InetAddress;
import java.net.UnknownHostException;
import android.app.Activity;
import android.os.Bundle;
import android.text.Editable;
import android.util.Log;
import android.view.View;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class Ping extends Activity {
EditText edit;
TextView text;
@Override
protected void onCreate(Bundle savedInstanceState) {
//TODO Auto-generated method stub
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_ping);
edit = (EditText)findViewById(R.id.editText1);
edit.setText("192.168.1.1");
text = (TextView)findViewById(R.id.textView1);
Button button = (Button)findViewById(R.id.button1);
button.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
//TODO Auto-generated method stub
Editable host = edit.getText();
try {
String pingCmd = "ping -c 5 " + host;
String pingResult = "";
Runtime r = Runtime.getRuntime();
Process p = r.exec(pingCmd);
BufferedReader in = new BufferedReader(new
InputStreamReader(p.getInputStream()));
String inputLine;
while ((inputLine = in.readLine()) != null) {
System.out.println(inputLine);
text.setText(inputLine + "\n\n");
pingResult += inputLine;
text.setText(pingResult);
}
in.close();
}//try
catch (IOException e) {
System.out.println(e);
}
}
});
}}

ce FindPeopleFragment.java (ce devrait être le PingFragment.java).
Je pensais que c'était une tentative réussie parce que l'éclipse n'a montré aucune marque rouge, mais si je trompe merci de me corriger.

package info.androidhive.slidingmenu;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import android.app.Fragment;
import android.content.Intent;
import android.os.Bundle;
import android.text.Editable;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.EditText;
import android.widget.TextView;
public class FindPeopleFragment extends Fragment 
implements OnClickListener
{
EditText edit;
TextView text;
Button button;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.activity_ping, container, false);
EditText edit = (EditText) rootView.findViewById(R.id.editText1);
edit.setText("192.168.1.1");
text = (TextView) rootView.findViewById(R.id.textView1);
button = (Button)rootView.findViewById(R.id.button1);
button.setOnClickListener(onClickListener);
return rootView;
}
@Override
public void onClick(View v) {
Editable host = edit.getText();
try {
String pingCmd = "ping -c 5 " + host;
String pingResult = "";
Runtime r = Runtime.getRuntime();
Process p = r.exec(pingCmd);
BufferedReader in = new BufferedReader(new
InputStreamReader(p.getInputStream()));
String inputLine;
while ((inputLine = in.readLine()) != null) {
System.out.println(inputLine);
text.setText(inputLine + "\n\n");
pingResult += inputLine;
text.setText(pingResult);
}
in.close();
}//try
catch (IOException e) {
System.out.println(e);
}
}
};;

et enfin, c'est mon Manifeste pour le projet ci-dessus

<?xml version="1.0" encoding="utf-8"?>
<manifest xmlns:android="http://schemas.android.com/apk/res/android"
package="info.androidhive.slidingmenu"
android:versionCode="1"
android:versionName="1.0" >
<permission
android:name="my.jlm.permission.MAPS_RECEIVE"
android:protectionLevel="signature"/>
<uses-permission android:name="android.permission.RECEIVE_BOOT_COMPLETED"/>
<uses-permission android:name="museumjakarta.source.permission.MAPS_RECEIVE"/>    
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE"/>
<uses-permission android:name="com.google.android.providers.gsf.permission.READ_GSERVICES"/>
<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
<uses-permission android:name="android.permission.INTERNET"/>
<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE"/>
<uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
<uses-permission android:name="android.permission.CALL_PHONE" />
<uses-permission android:name="android.permission.READ_PHONE_STATE" />
<uses-sdk
android:minSdkVersion="11"
android:targetSdkVersion="17" />
<application
android:allowBackup="true"
android:icon="@drawable/ic_launcher"
android:label="@string/app_name"
android:theme="@style/AppTheme" >
<activity
android:name="info.androidhive.slidingmenu.MainActivity"
android:label="@string/app_name" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
</manifest>

et c'est mon LogCat journal des erreurs:

03-15 09:07:41.160: E/AndroidRuntime(1267): FATAL EXCEPTION: main
03-15 09:07:41.160: E/AndroidRuntime(1267): Process: info.androidhive.slidingmenu, PID: 1267
03-15 09:07:41.160: E/AndroidRuntime(1267): java.lang.NullPointerException
03-15 09:07:41.160: E/AndroidRuntime(1267):     at info.androidhive.slidingmenu.FindPeopleFragment.onClick(FindPeopleFragment.java:53)
03-15 09:07:41.160: E/AndroidRuntime(1267):     at android.view.View.performClick(View.java:4424)
03-15 09:07:41.160: E/AndroidRuntime(1267):     at android.view.View$PerformClick.run(View.java:18383)
03-15 09:07:41.160: E/AndroidRuntime(1267):     at android.os.Handler.handleCallback(Handler.java:733)
03-15 09:07:41.160: E/AndroidRuntime(1267):     at android.os.Handler.dispatchMessage(Handler.java:95)
03-15 09:07:41.160: E/AndroidRuntime(1267):     at android.os.Looper.loop(Looper.java:137)
03-15 09:07:41.160: E/AndroidRuntime(1267):     at android.app.ActivityThread.main(ActivityThread.java:4998)
03-15 09:07:41.160: E/AndroidRuntime(1267):     at java.lang.reflect.Method.invokeNative(Native Method)
03-15 09:07:41.160: E/AndroidRuntime(1267):     at java.lang.reflect.Method.invoke(Method.java:515)
03-15 09:07:41.160: E/AndroidRuntime(1267):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:777)
03-15 09:07:41.160: E/AndroidRuntime(1267):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:593)
03-15 09:07:41.160: E/AndroidRuntime(1267):     at dalvik.system.NativeStart.main(Native Method)

pour simplifier voici ce que j'ai vécu:
le Ping xml page s'affiche lorsque je clique dans le Tiroir ListView, cependant lorsque je clique sur le Bouton Ping à l'intérieur, la demande s'est écrasé, résultant de l'erreur ci-dessus du journal. M'aider à résoudre ce problème et je vous remercie beaucoup.

PS: je suis en utilisant eclipse adt parce que je ne peux pas courir COMME sur mon processeur AMD.

edit: pense qu'il peut aider, je vais poster le mainActivity.java pour ce fragment:

package info.androidhive.slidingmenu;
import info.androidhive.slidingmenu.adapter.NavDrawerListAdapter;
import info.androidhive.slidingmenu.model.NavDrawerItem;
import java.util.ArrayList;
import android.app.Activity;
import android.app.Fragment;
import android.app.FragmentManager;
import android.content.res.Configuration;
import android.content.res.TypedArray;
import android.os.Bundle;
import android.support.v4.app.ActionBarDrawerToggle;
import android.support.v4.widget.DrawerLayout;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.AdapterView;
import android.widget.ListView;
public class MainActivity extends Activity {
private DrawerLayout mDrawerLayout;
private ListView mDrawerList;
private ActionBarDrawerToggle mDrawerToggle;
//nav drawer title
private CharSequence mDrawerTitle;
//used to store app title
private CharSequence mTitle;
//slide menu items
private String[] navMenuTitles;
private TypedArray navMenuIcons;
private ArrayList<NavDrawerItem> navDrawerItems;
private NavDrawerListAdapter adapter;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mTitle = mDrawerTitle = getTitle();
//load slide menu items
navMenuTitles = getResources().getStringArray(R.array.nav_drawer_items);
//nav drawer icons from resources
navMenuIcons = getResources()
.obtainTypedArray(R.array.nav_drawer_icons);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
mDrawerList = (ListView) findViewById(R.id.list_slidermenu);
navDrawerItems = new ArrayList<NavDrawerItem>();
//adding nav drawer items to array
//Home
navDrawerItems.add(new NavDrawerItem(navMenuTitles[0], navMenuIcons.getResourceId(0, -1)));
//Find People
navDrawerItems.add(new NavDrawerItem(navMenuTitles[1], navMenuIcons.getResourceId(1, -1)));
//Photos
navDrawerItems.add(new NavDrawerItem(navMenuTitles[2], navMenuIcons.getResourceId(2, -1)));
//Communities, Will add a counter here
navDrawerItems.add(new NavDrawerItem(navMenuTitles[3], navMenuIcons.getResourceId(3, -1), true, "22"));
//Pages
navDrawerItems.add(new NavDrawerItem(navMenuTitles[4], navMenuIcons.getResourceId(4, -1)));
//What's hot, We  will add a counter here
navDrawerItems.add(new NavDrawerItem(navMenuTitles[5], navMenuIcons.getResourceId(5, -1), true, "50+"));
//Recycle the typed array
navMenuIcons.recycle();
mDrawerList.setOnItemClickListener(new SlideMenuClickListener());
//setting the nav drawer list adapter
adapter = new NavDrawerListAdapter(getApplicationContext(),
navDrawerItems);
mDrawerList.setAdapter(adapter);
//enabling action bar app icon and behaving it as toggle button
getActionBar().setDisplayHomeAsUpEnabled(true);
getActionBar().setHomeButtonEnabled(true);
mDrawerToggle = new ActionBarDrawerToggle(this, mDrawerLayout,
R.drawable.ic_drawer, //nav menu toggle icon
R.string.app_name, //nav drawer open - description for accessibility
R.string.app_name //nav drawer close - description for accessibility
) {
public void onDrawerClosed(View view) {
getActionBar().setTitle(mTitle);
//calling onPrepareOptionsMenu() to show action bar icons
invalidateOptionsMenu();
}
public void onDrawerOpened(View drawerView) {
getActionBar().setTitle(mDrawerTitle);
//calling onPrepareOptionsMenu() to hide action bar icons
invalidateOptionsMenu();
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
if (savedInstanceState == null) {
//on first time display view for first nav item
displayView(0);
}
}
/**
* Slide menu item click listener
* */
private class SlideMenuClickListener implements
ListView.OnItemClickListener {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position,
long id) {
//display view for selected nav drawer item
displayView(position);
}
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true;
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
//toggle nav drawer on selecting action bar app icon/title
if (mDrawerToggle.onOptionsItemSelected(item)) {
return true;
}
//Handle action bar actions click
switch (item.getItemId()) {
case R.id.action_settings:
return true;
default:
return super.onOptionsItemSelected(item);
}
}
/* *
* Called when invalidateOptionsMenu() is triggered
*/
@Override
public boolean onPrepareOptionsMenu(Menu menu) {
//if nav drawer is opened, hide the action items
boolean drawerOpen = mDrawerLayout.isDrawerOpen(mDrawerList);
menu.findItem(R.id.action_settings).setVisible(!drawerOpen);
return super.onPrepareOptionsMenu(menu);
}
/**
* Diplaying fragment view for selected nav drawer list item
* */
private void displayView(int position) {
//update the main content by replacing fragments
Fragment fragment = null;
switch (position) {
case 0:
fragment = new HomeFragment();
break;
case 1:
fragment = new FindPeopleFragment();
break;
case 2:
fragment = new PhotosFragment();
break;
case 3:
fragment = new CommunityFragment();
break;
case 4:
fragment = new PagesFragment();
break;
case 5:
fragment = new WhatsHotFragment();
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getFragmentManager();
fragmentManager.beginTransaction()
.replace(R.id.frame_container, fragment).commit();
//update selected item and title, then close the drawer
mDrawerList.setItemChecked(position, true);
mDrawerList.setSelection(position);
setTitle(navMenuTitles[position]);
mDrawerLayout.closeDrawer(mDrawerList);
} else {
//error in creating fragment
Log.e("MainActivity", "Error in creating fragment");
}
}
@Override
public void setTitle(CharSequence title) {
mTitle = title;
getActionBar().setTitle(mTitle);
}
/**
* When using the ActionBarDrawerToggle, you must call it during
* onPostCreate() and onConfigurationChanged()...
*/
@Override
protected void onPostCreate(Bundle savedInstanceState) {
super.onPostCreate(savedInstanceState);
//Sync the toggle state after onRestoreInstanceState has occurred.
mDrawerToggle.syncState();
}
@Override
public void onConfigurationChanged(Configuration newConfig) {
super.onConfigurationChanged(newConfig);
//Pass any configuration change to the drawer toggls
mDrawerToggle.onConfigurationChanged(newConfig);
}
}

OriginalL'auteur Arya | 2015-03-15