我有一个联系人选择器列表,其中包含具有电话号码的联系人的chckbox。 现在,我的问题是,似乎无法获得已检查联系人的姓名和电话号码。
这是我的代码:
import android.app.ListActivity;
import android.content.ContentResolver;
import android.content.Intent;
import android.database.Cursor;
import android.net.Uri;
import android.os.Bundle;
import android.provider.ContactsContract;
import android.provider.ContactsContract.CommonDataKinds.Phone;
import android.util.Log;
import android.util.SparseBooleanArray;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.EditText;
import android.widget.ListAdapter;
import android.widget.ListView;
import android.widget.SimpleCursorAdapter;
public class Create_Group extends ListActivity implements OnClickListener{
// List variables
public String[] Contacts = {};
public int[] to = {};
public ListView myListView;
Button save_button;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.create_group);
// Initializing the buttons according to their ID
save_button = (Button)findViewById(R.id.save_group_button);
// Defines listeners for the buttons
save_button.setOnClickListener(this);
Cursor mCursor = getContacts();
startManagingCursor(mCursor);
ListAdapter adapter = new SimpleCursorAdapter(this, android.R.layout.simple_list_item_multiple_choice, mCursor,
Contacts = new String[] {ContactsContract.Contacts.DISPLAY_NAME },
to = new int[] { android.R.id.text1 });
setListAdapter(adapter);
myListView = getListView();
myListView.setItemsCanFocus(false);
myListView.setChoiceMode(ListView.CHOICE_MODE_MULTIPLE);
}
private Cursor getContacts() {
// Run query
Uri uri = ContactsContract.Contacts.CONTENT_URI;
String[] projection = new String[] { ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME};
String selection = ContactsContract.Contacts.HAS_PHONE_NUMBER + " = '"
+ ("1") + "'";
String[] selectionArgs = null;
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME
+ " COLLATE LOCALIZED ASC";
return managedQuery(uri, projection, selection, selectionArgs,
sortOrder);
}
public void onClick(View src) {
Intent i;
switch (src.getId())
{
case R.id.save_group_button:
int checked_Names_Counter = 0;
// Goes over the list of contacts and checks which were checked
for (int j = 0; j < myListView.getCount(); j++)
{
if (myListView.isItemChecked(j) == true)
{
Cursor cur = getContacts();
ContentResolver contect_resolver = getContentResolver();
cur.moveToFirst();
/**
* Here I tried to compare the IDs but each list has different IDs so it didn't really help me...
// Converts the current checked name ID into a String
String Checked_ID = String.valueOf(myListView.getCheckedItemIds()[checked_Names_Counter]);
// Checks if the current checked ID matches the cursors ID, if not move the cursor to the next name
while (Checked_ID != cur.getString(cur.getColumnIndexOrThrow(ContactsContract.Contacts._ID)))
{
cur.moveToNext();
}
*/
/**
* Here I tried to compare the names, even though it's not a good pratice, and it didn't work either...
String Checked_Name = myListView.getAdapter().getItem(checked_Names_Counter).toString();
// Checks if the current checked ID matches the cursors ID, if not move the cursor to the next name
while (Checked_Name != cur.getString(cur.getColumnIndexOrThrow(ContactsContract.Contacts.DISPLAY_NAME)))
{
cur.moveToNext();
}
*/
String id = cur.getString(cur.getColumnIndexOrThrow(ContactsContract.Contacts._ID));
String name = "";
String no = "";
Cursor phoneCur = contect_resolver.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[] { id }, null);
name = phoneCur.getString(phoneCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.DISPLAY_NAME));
no = phoneCur.getString(phoneCur.getColumnIndex(ContactsContract.CommonDataKinds.Phone.NUMBER));
id = null;
name = null;
no = null;
phoneCur = null;
checked_Names_Counter++;
}
}
// Goes back to the Manage Groups screen
i = new Intent(this, Manage_Groups.class);
startActivity(i);
break;
}
}
}
有什么想法吗?
谢谢!
答案 0 :(得分:2)
看起来你是如此接近,我使用ListView.getCheckedItemIds()返回所选联系人的唯一ID:
public void onClick(View view) {
long[] ids = myListView.getCheckedItemIds();
for(long id : ids) {
Cursor contact = getContentResolver().query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI, null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID + " = ?", new String[] { id + "" }, null);
// Do whatever you want with the data
}
}
<强>加成强>
我对此代码有一个简单的问题:
// Goes back to the Manage Groups screen
i = new Intent(this, Manage_Groups.class);
startActivity(i);
这是否会将用户带回之前的活动?如果是这样,您应该使用finish();
代替。 finish()结束当前的Activity,将其从堆栈中取出并释放所有内存(浪费更少的内存意味着更快的应用程序。)它还允许上一个Activity在它离开时恢复保存的状态(填入EditTexts,之前的Spinner选择,切换按钮和复选标记等。)活动将从用户停止的地方恢复。