我有contactmanager.java 来显示读取并显示电话中的联系人。当我单击某些联系人列表时，它不会显示确切的联系人详细信息。我可以知道为什么吗？
/*
* Copyright (C) 2009 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.example.android.contactmanager;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.util.Log;
import android.view.View;
import android.widget.AdapterView;
import android.widget.AdapterView.OnItemClickListener;
import android.widget.Button;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.CompoundButton.OnCheckedChangeListener;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
public final class ContactManager extends Activity implements OnItemClickListener
{
public static final String TAG = "ContactManager";
private Button mAddAccountButton;
private ListView mContactList;
private boolean mShowInvisible;
//public BooleanObservable ShowInvisible = new BooleanObservable(false);
private CheckBox mShowInvisibleControl;
/**
* Called when the activity is first created. Responsible for initializing the UI.
*/
@Override
public void onCreate(Bundle savedInstanceState)
{
Log.v(TAG, "Activity State: onCreate()");
super.onCreate(savedInstanceState);
setContentView(R.layout.contact_manager);
// Obtain handles to UI objects
mAddAccountButton = (Button) findViewById(R.id.addContactButton);
mContactList = (ListView) findViewById(R.id.contactList);
mShowInvisibleControl = (CheckBox) findViewById(R.id.showInvisible);
// Initialise class properties
mShowInvisible = false;
mShowInvisibleControl.setChecked(mShowInvisible);
// Register handler for UI elements
mAddAccountButton.setOnClickListener(new View.OnClickListener() {
public void onClick(View v) {
Log.d(TAG, "mAddAccountButton clicked");
launchContactAdder();
}
});
mShowInvisibleControl.setOnCheckedChangeListener(new OnCheckedChangeListener()
{
public void onCheckedChanged(CompoundButton buttonView, boolean isChecked)
{
Log.d(TAG, "mShowInvisibleControl changed: " + isChecked);
mShowInvisible = isChecked;
populateContactList();
}
});
mContactList = (ListView) findViewById(R.id.contactList);
mContactList.setOnItemClickListener(this);
// Populate the contact list
populateContactList();
}
/**
* Populate the contact list based on account currently selected in the account spinner.
*/
private void populateContactList() {
// Build adapter with contact entries
Cursor cursor = getContacts();
String[] fields = new String[] {
ContactsContract.Data.DISPLAY_NAME,
};
SimpleCursorAdapter adapter = new SimpleCursorAdapter(this, R.layout.contact_entry, cursor,
fields, new int[] {R.id.contactEntryText});
mContactList.setAdapter(adapter);
}
/**
* Obtains the contact list for the currently selected account.
*
* @return A cursor for for accessing the contact list.
*/
private Cursor getContacts()
{
// Run query
Uri uri = ContactsContract.Contacts.CONTENT_URI;
Log.i("Uri ContactsContract.Contacts.CONTENT_URI" + ContactsContract.Contacts.CONTENT_URI, null, null);
String[] projection = new String[]
{
ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME,
//ContactsContract.Contacts.DISPLAY_PHONE
};
String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '" + (mShowInvisible ? "0" : "1") + "'";
//String selection = ContactsContract.Contacts.IN_VISIBLE_GROUP + " = '" + (mShowInvisible.get() ? "0" : "1") + "'";
String[] selectionArgs = null;
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME + " COLLATE LOCALIZED ASC";
return this.managedQuery(uri, projection, selection, selectionArgs, sortOrder);
}
/**
* Launches the ContactAdder activity to add a new contact to the selected account.
*/
protected void launchContactAdder()
{
Intent i = new Intent(this, ContactAdder.class);
startActivity(i);
}
public void onItemClick(AdapterView<?> l, View v, int position, long id) {
Log.i("TAG", "You clicked item " + id + " at position " + position);
// Here you start the intent to show the contact details
// selected item
//String contactDetails = (String)(mContactList.getItemAtPosition(position));
//Uri contactDetails = ContactsContract.Contacts.CONTENT_URI;
Cursor cursor = getContacts();
//Cursor emailCur = getContacts();
cursor.moveToPosition(position);
String name = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
int phone = cursor.getInt(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DATA));
//String email = emailCur.getColumnName(cursor.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA));
// Launching new Activity on selecting single List Item
Intent i = new Intent(getApplicationContext(), SingleListContact.class);
SingleListContact.PutDetails(ContactsContract.Contacts._ID, name, phone,null );
Log.i("Show Contact Clicked: ", name);
// sending data to new activity
//i.putExtra("Contact Person", contactDetails);
startActivity(i);
}
}
和 SingleListContent.java
package com.example.android.contactmanager;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.util.Log;
import android.widget.EditText;
import android.widget.TextView;
public class SingleListContact extends Activity{
static int ContactPhone;
static String ContactID, ContactName, ContactEmail;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.setContentView(R.layout.single_list_contact_view);
EditText txtContact = (EditText) findViewById(R.id.editText1);
txtContact.setText(ContactName);
// EditText txtContact2 = (EditText) findViewById(R.id.editText2);
// txtContact2.setText(ContactPhone);
EditText txtContact3 = (EditText) findViewById(R.id.editText3);
txtContact3.setText(ContactEmail);
//
// Intent i = getIntent();
// // getting attached intent data
// String contact = i.getStringExtra("contact");
// // displaying selected product name
// txtContact.setText(contact);
Log.e("test", ContactID +" & " + ContactName);
}
static void PutDetails (String id, String name, int phone, String email)
{
ContactID = id;
ContactName = name;
ContactPhone = phone;
ContactEmail = email;
}
}