android - 使用 ContentProvider 从联系人获取电话号码 - Android

Question

我正在制作一个小应用程序，我可以在其中使用内容提供程序获取我手机的联系人，并将它们显示在 ListView 中，如图所示。

我想选择 ListView 的一行并自动调用该特定联系人的电话。我尝试了一些东西，但它们不起作用。有任何想法吗？这是我的代码。

public class MainActivity extends ListActivity implements AdapterView.OnItemClickListener{
ArrayAdapter<String> adapter;
@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    ContentResolver cr = getContentResolver();
    Cursor c = cr.query(ContactsContract.Contacts.CONTENT_URI,
            new String[] {ContactsContract.Contacts.DISPLAY_NAME},
            null, null, null);

    List<String> contacts = new ArrayList<String>();
    if (c.moveToFirst()) {
        do {
            contacts.add(c.getString(c.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME)));
        } while (c.moveToNext());
    }
    adapter = new ArrayAdapter<String>(this, R.layout.activity_main, contacts);
    setListAdapter(adapter);



}

@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {

      //The answer should be inside here.

  }
}

Answer 1

首先，确保您已将权限添加到您的 AndroidManifest.xml 文件中:

<uses-permission android:name="android.permission.READ_CONTACTS"/>

更新:在 Android 6 及更高版本上，声明 list 中的权限不够，您必须明确要求用户授予读取联系人的权限，否则，您将获得异常。参见 this answer了解更多详情。

然后你可以像这样遍历你的手机联系人:

Cursor cursor = getContentResolver().query(ContactsContract.Contacts.CONTENT_URI,null, null, null, null); 
while (cursor.moveToNext()) { 
    String contactId = cursor.getString(cursor.getColumnIndex( 
    String hasPhone = cursor.getString(cursor.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER));

    if (Boolean.parseBoolean(hasPhone)) { 
        // You know it has a number so now query it like this
        Cursor phones = getContentResolver().query( ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null, ContactsContract.CommonDataKinds.Phone.CONTACT_ID +" = "+ contactId, null, null); 
        while (phones.moveToNext()) { 
            String phoneNumber = phones.getString(phones.getColumnIndex( ContactsContract.CommonDataKinds.Phone.NUMBER));                 
        } 
        phones.close(); 
    }

    Cursor emails = getContentResolver().query(ContactsContract.CommonDataKinds.Email.CONTENT_URI, null, ContactsContract.CommonDataKinds.Email.CONTACT_ID + " = " + contactId, null, null); 

    while (emails.moveToNext()) { 
        // This would allow you get several email addresses 
        String emailAddress = emails.getString( 
        emails.getColumnIndex(ContactsContract.CommonDataKinds.Email.DATA)); 
    } 

    emails.close();
}