Android联系人 - 检索到的Android联系人，如何将它们放在一个简单的ListView中？

Question

我的应用程序的一部分我需要一个列表，当选择该选项时显示所有联系人（包括电话号码）。

这里是按下按钮时，这就是所谓的活动：

package com.example.prototype01; 

import android.app.Activity; 
import android.database.Cursor; 
import android.os.Bundle; 
import android.provider.ContactsContract; 
import android.util.Log; 

public class nominateContactsActivity extends Activity { 
    public void onCreate(Bundle savedInstanceState){ 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.nominatecontactslayout); 
     Cursor c = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null); 
     String contactName, contactTelNumber = ""; 
     String contactID; 
     c.moveToFirst(); 
     for (int i = 0; i < c.getCount(); i++) { 
      contactName = c.getString(c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)); 
      contactID = c.getString(c.getColumnIndex(ContactsContract.Contacts._ID)); 
      if (Integer.parseInt(c.getString(c.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) { 
       Cursor pCur = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[] { contactID },null); 
       while (pCur.moveToNext()) { 
        contactTelNumber = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)); 
       } 
      } 
      Log.i("name ", contactName + " "); 
      Log.i("number ", contactTelNumber + " "); 
      c.moveToNext(); 

     } 
    } 
    } 

正如你所看到的，这个代码返回存储在手机上的所有联系人的姓名和电话号码。目前，这些只是回应logcat。我似乎无法解决如何在列表视图中列出这些项目，而只显示名称和编号。我已经跟随了几个教程无济于事，所以我很不情愿地寻求你的协助。我很不情愿地说，因为我确信这个问题已经被多次解答，我似乎无法将解决方案应用到我的代码中！

预先感谢您！

亲切的问候， Antwan

Answer 1

这里是为了适应你已经有一个办法。我添加了注释的一切之前，我改变了沿途讲解：

public class nominateContactsActivity extends Activity { 
    // Add a list to keep all the "name: number" strings 
    private List<String> mNameNumber = new ArrayList<String>(); 

    public void onCreate(Bundle savedInstanceState){ 
     super.onCreate(savedInstanceState); 
     setContentView(R.layout.nominatecontactslayout); 
     Cursor c = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI, null, null, null, null); 
     String contactName, contactTelNumber = ""; 
     String contactID; 

     // You only need to find these indices once 
     int idIndex = c.getColumnIndex(ContactsContract.Contacts._ID); 
     int hasNumberIndex = c.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER); 
     int nameIndex = c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME); 


     // This is simpler than calling getCount() every iteration 
     while(c.moveToNext()) { 
      contactName = c.getString(nameIndex); 
      contactID = c.getString(idIndex); 

      // If this is an integer ask for an integer 
      if (c.getInt(hasNumberIndex)) > 0) { 
       Cursor pCur = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[] { contactID },null); 
       while (pCur.moveToNext()) { 
        contactTelNumber = pCur.getString(pCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER)); 

        // Store the "name: number" string in our list 
        mNameNumber.add(contactName + ": " + contactTelNumber); 
       } 
      } 
     } 

     // Find the ListView, create the adapter, and bind them 
     ListView listView = (ListView) findViewById(R.id.listView); 
     ArrayAdapter<String> adapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mNameNumber); 
     listView.setAdapter(adapter); 
    } 
} 

Answer 2

这里是我会做什么把联系人在ListView

在你的活动：

private ListView mContactsListView; 
private ListContactItemAdapter mContactsListAdapter; 

this.mContactsListAdapter = new ListContactItemAdapter(this, R.layout.contact_row); 

// after doing setContentView, assuming you have defined a listview in your layout file 
this.mContactsListView= (ListView) this.findViewById(R.id.contactsListView); 
// You may want to create a custom adapter, which I wrote below for showing you example 
this.mContactsListView.setAdapter(this.mContactsListAdapter); 

for (/* each contact */) { 

    Contact contact = new Contact(); 
    contact.name = contactName; 
    contact.number = contactNumber; 

    this.mContactsListAdapter.add(contact); 
} 

// In order to refresh your list and make data appear 
this.mContactsListAdapter.notifyDataSetChanged(); 

在

当然我的例子你需要一个包含联系数据的模型对象：

public class Contact { 

public String name; 
public String number; 

} 

这可能是使用上面的联系类自定义适配器：

public class ListContactItemAdapter extends ArrayAdapter<Contact> { 

private int mLineLayout; 
private LayoutInflater mInflater; 

public ListContactItemAdapter(Context pContext, int pLineLayout) { 
    super(pContext, pLineLayout); 

    this.mLineLayout = pLineLayout; 
    this.mInflater = (LayoutInflater) pContext.getSystemService(Context.LAYOUT_INFLATER_SERVICE); 
} 

static class ViewHolder { 

    TextView contactName; 
    TextView contactNumber; 
} 

@Override 
public View getView(int pPosition, View pView, ViewGroup pParent) { 

    ViewHolder holder; 
    if (pView == null) { 

     pView = this.mInflater.inflate(this.mLineLayout, null); 

     holder = new ViewHolder(); 
     holder.contactName = (TextView) pView.findViewById(R.id.contactName); 
     holder.contactNumber = (TextView) pView.findViewById(R.id.contactNumber); 

     pView.setTag(holder); 

    } else { 
     holder = (ViewHolder) pView.getTag(); 
    } 

    Contact contact = getItem(pPosition); 
    if (contact != null) { 

     holder.contactName.setText(contact.name); 
     holder.contactNumber.setText(contact.number); 
    } 

    return pView; 
} 

}

对于例如你需要的布局来定义列表视图的列。这可能是一个contact_row.xml的例子：

<?xml version="1.0" encoding="utf-8"?> 
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" 
android:layout_width="fill_parent" 
android:layout_height="fill_parent" > 

<TextView 
    android:id="@+id/contactName" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:paddingLeft="6dp" 
    android:text="Contact name" 
    android:textAppearance="?android:attr/textAppearanceMedium" /> 

<TextView 
    android:id="@+id/contactNumber" 
    android:layout_width="wrap_content" 
    android:layout_height="wrap_content" 
    android:layout_below="@+id/contactName" 
    android:paddingLeft="6dp" 
    android:text="number" 
    android:textAppearance="?android:attr/textAppearanceSmall" /> 


</RelativeLayout> 

我没有尝试，但这应该工作。无论如何，我希望它能让你理解列表视图的基本功能。