我是Android应用开发的新手。我写了代码来成功实现我的Android应用程序中的联系人列表。如果我点击特定联系人，它会显示联系人姓名和联系人号码（联系方式）（主页，电话，其他等）。现在我想在其中添加搜索功能。但我没有这样做。以下是代码：
public class Contacts extends Activity {
private static final String TAG = "[Contacts]";
private static final String headerTitle = "Pick a Contact";
private static final String searchtext = "";
// Default List view for loading the list
ListView lstContacts;
JSONObject o;
public static boolean goahead = false;
// Added for fee calculation in background
public SQLiteDatabase db;
// Context
Context context;
// AndroidConstants declaration
AndroidConstants ac;
// Declarations for the Contact list
SimpleCursorAdapter mAdapter;
MatrixCursor mMatrixCursor;
TextView tv_name;
TextView tv_details;
public static String details_comm;
EditText inputSearch;
// ProgressBar pbHeaderProgress;
LinearLayout progressBarLayout;
/** Called when the activity is first created. */
// onCreate event
@SuppressWarnings("deprecation")
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setContentView(R.layout.activity_contact);
progressBarLayout = (LinearLayout) findViewById(R.id.linlaHeaderProgress);
progressBarLayout.setVisibility(LinearLayout.VISIBLE);
ActionBar actionBar = getActionBar();
actionBar = ActionBarHelper
.customActionBar(actionBar, headerTitle, "1");
context = getApplicationContext();
lstContacts = (ListView) findViewById(R.id.listView1);
Intent i = getIntent();
// The contacts from the contacts content provider is stored in this
// cursor
mMatrixCursor = new MatrixCursor(new String[] { "_id", "name",
"details" });
tv_name = (TextView) findViewById(R.id.tv_name);
tv_details = (TextView) findViewById(R.id.tv_details);
inputSearch = (EditText) findViewById(R.id.inputSearch);
// Adapter to set data in the listview
// HIDING INPUTSEARCH
// inputSearch.setVisibility(View.GONE);
mAdapter = new SimpleCursorAdapter(getBaseContext(),
R.layout.lv_layout, null, new String[] { "name", "details" },
new int[] { R.id.tv_name, R.id.tv_details }, 0);
mAdapter.notifyDataSetChanged();
// Setting the adapter to listview
lstContacts.setAdapter(mAdapter);
lstContacts.setTextFilterEnabled(true);
// Creating an AsyncTask object to retrieve and load listview with
// contacts
ListViewContactsLoader listViewContactsLoader = new ListViewContactsLoader();
// Starting the AsyncTask process to retrieve and load listview with
// contacts
listViewContactsLoader.execute();
// Database instance
db = openOrCreateDatabase(ac.database_name,
SQLiteDatabase.CREATE_IF_NECESSARY, null);
db.setVersion(1);
db.setLocale(Locale.getDefault());
db.setLockingEnabled(true);
// Code for fee calculation working as a background process
FeeCalculation feeCal = new FeeCalculation();
feeCal.execute();
lstContacts.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View view,
int position, long index) {
String tempData = ((TextView) (view.findViewById(R.id.tv_name)))
.getText().toString();
String tempData2 = ((TextView) (view
.findViewById(R.id.tv_details))).getText().toString();
String[] data = new String[2];
data[0] = tempData;
data[1] = tempData2;
Intent intent = new Intent(Contacts.this, ProcessContacts.class);
intent.putExtra("data", data);
startActivity(intent);
overridePendingTransition(R.anim.slide_left_in,
R.anim.slide_left_out);
finish();
}
});
// Code added for contact list search
inputSearch.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2,
int arg3) {
// When user changed the Text
Log.d(TAG, "search:" + cs.toString());
if (mAdapter != null) {
mAdapter.getFilter().filter(cs);
}
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1,
int arg2, int arg3) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
}
});
mAdapter.setFilterQueryProvider(new FilterQueryProvider() {
public Cursor runQuery(CharSequence constraint) {
Log.d(TAG, "CharSequence constraint");
Uri uri = ContactsContract.Contacts.CONTENT_URI;
Log.d(TAG, "CharSequence constraint1");
String[] projection = new String[] {
ContactsContract.Contacts._ID,
ContactsContract.Contacts.DISPLAY_NAME, };
Log.d(TAG, "CharSequence constraint2");
String selection = ContactsContract.Contacts.DISPLAY_NAME
+ " like '" + constraint.toString() + "%'";
Log.d(TAG, "CharSequence constraint3");
String[] selectionArgs = null;
String sortOrder = ContactsContract.Contacts.DISPLAY_NAME
+ " COLLATE LOCALIZED ASC";
Log.d(TAG, "CharSequence constraint4");
Cursor cur = getContentResolver().query(uri, projection,
selection, selectionArgs, sortOrder);
String a = DatabaseUtils.dumpCursorToString(cur);
Log.e("TAG", "String for the filter===>" + a);
return cur;
}
});
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
// NavUtils.navigateUpFromSameTask(Contacts.this);
Intent intent = new Intent(Contacts.this,
AcceptAmountActivity.class);
startActivity(intent);
overridePendingTransition(R.anim.slide_right_in,
R.anim.slide_right_out);
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
/** An AsyncTask class to retrieve and load listview with contacts */
private class ListViewContactsLoader extends AsyncTask<Void, Void, Cursor> {
protected Cursor doInBackground(Void... params) {
String displayName = "";
String homePhone = "";
String mobilePhone = "";
String workPhone = "";
String contact = "";
Log.d(TAG, "ListViewContactsLoader");
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null,
null, null, "UPPER("
+ ContactsContract.Contacts.DISPLAY_NAME + ") ASC");
String phone = "";
if (cur.getCount() > 0) {
while (cur.moveToNext()) {
String id = cur.getString(cur
.getColumnIndex(ContactsContract.Contacts._ID));
String name = cur
.getString(cur
.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
if (Integer
.parseInt(cur.getString(cur
.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
System.out.println("name : " + name + ", ID : " + id);
Cursor pCur = cr
.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID
+ " = ?", new String[] { id },
null);
String details = "";
while (pCur.moveToNext()) {
phone = pCur.getString(pCur
.getColumnIndex(Phone.NUMBER));
int type = pCur.getInt(pCur
.getColumnIndex(Phone.TYPE));
switch (type) {
case Phone.TYPE_HOME:
details += "Home:" + phone + ",";
break;
case Phone.TYPE_MOBILE:
details += "Mobile:" + phone + ",";
break;
case Phone.TYPE_WORK:
details += "Work:" + phone + ",";
break;
case Phone.TYPE_OTHER:
details += "Other:" + phone + ",";
break;
}
}
name = name.trim();
details = details.trim();
contact = name + " \n";
contact += details;
contact = contact.trim();
mMatrixCursor
.addRow(new Object[] { id, name, details });
pCur.close();
}
}
}
return mMatrixCursor;
}
@Override
protected void onPostExecute(Cursor result) {
mAdapter.swapCursor(result);
progressBarLayout.setVisibility(View.GONE);
}
}
}
应用程序崩溃并出现以下错误： 10-28 18：29：22.281：E / AndroidRuntime（26985）：java.lang.IllegalArgumentException：column＆＃39; name＆＃39;不存在
答案 0 :(得分：1)
我在代码中做了以下更改。我使用listview适配器而不是游标适配器来实现我的要求。
public class Contacts extends Activity {
private static final String TAG = "[Contacts]";
private static final String headerTitle = "Pick a Contact";
private static final String searchtext = "";
// Default List view for loading the list
ListView lstContacts;
// PostTask posttask;
public static String number, MAC_ID, IMEI, gotArrayString, error_code,
error_desc;
// Added for tran no
public static int count = 0;
JSONObject o;
public static boolean goahead = false;
// Added for fee calculation in background
public SQLiteDatabase db;
// Context
Context context;
// AndroidConstants declaration
AndroidConstants ac;
// Declarations for the Contact list
SimpleCursorAdapter mAdapter;
MatrixCursor mMatrixCursor;
TextView tv_name;
TextView tv_details;
public static String details_comm;
EditText inputSearch;
LinearLayout progressBarLayout;
List<String> nameArray = new ArrayList<String>();
List<String> detailsArray = new ArrayList<String>();
private SimpleAdapter adapter;
private ContactGlobalModel cont = new ContactGlobalModel();
private ArrayList<String> arraynamelist = new ArrayList<String>();
private ArrayList<String> arraydetailslist = new ArrayList<String>();
//SimpleAdaptor
private static List<Map<String, String>> list = new ArrayList<Map<String, String>>();
private static Map<String, String> map;
private static int countx;
/** Called when the activity is first created. */
// onCreate event
@SuppressWarnings("deprecation")
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_INDETERMINATE_PROGRESS);
setContentView(R.layout.activity_contact);
progressBarLayout = (LinearLayout) findViewById(R.id.linlaHeaderProgress);
progressBarLayout.setVisibility(LinearLayout.VISIBLE);
ActionBar actionBar = getActionBar();
actionBar = ActionBarHelper
.customActionBar(actionBar, headerTitle, "1");
context = getApplicationContext();
lstContacts = (ListView) findViewById(R.id.listView1);
Intent i = getIntent();
tv_name = (TextView) findViewById(R.id.tv_name);
tv_details = (TextView) findViewById(R.id.tv_details);
inputSearch = (EditText) findViewById(R.id.inputSearch);
// Adapter to set data in the listview
adapter = new SimpleAdapter(getApplicationContext(), list, R.layout.lv_layout, new String[] { "name", "details" }, new int[] { R.id.tv_name, R.id.tv_details });
lstContacts.setAdapter(adapter);
lstContacts.setFastScrollEnabled(true);
lstContacts.setTextFilterEnabled(true);
// Contact list loader cursor
Cursor curContact;
// Creating an AsyncTask object to retrieve and load list view with
// contacts
ListViewContactsLoader listViewContactsLoader = new ListViewContactsLoader();
// Starting the AsyncTask process to retrieve and load listview with
// contacts
listViewContactsLoader.execute();
// Database instance
db = openOrCreateDatabase(ac.DATABASE_NAME,
SQLiteDatabase.CREATE_IF_NECESSARY, null);
db.setVersion(1);
db.setLocale(Locale.getDefault());
db.setLockingEnabled(true);
// Code for fee calculation working as a background process
FeeCalculation feeCal = new FeeCalculation();
feeCal.execute();
lstContacts.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> arg0, View view,
int position, long index) {
String tempData = ((TextView) (view.findViewById(R.id.tv_name)))
.getText().toString();
String tempData2 = ((TextView) (view
.findViewById(R.id.tv_details))).getText().toString();
String[] data = new String[2];
data[0] = tempData;
data[1] = tempData2;
Intent intent = new Intent(Contacts.this, ProcessContacts.class);
intent.putExtra("data", data);
startActivity(intent);
overridePendingTransition(R.anim.slide_left_in,
R.anim.slide_left_out);
finish();
}
});
// Code added for contact list search
inputSearch.addTextChangedListener(new TextWatcher() {
@Override
public void onTextChanged(CharSequence cs, int arg1, int arg2,
int arg3) {
adapter.getFilter().filter(cs);
}
@Override
public void beforeTextChanged(CharSequence arg0, int arg1,
int arg2, int arg3) {
// TODO Auto-generated method stub
}
@Override
public void afterTextChanged(Editable arg0) {
// TODO Auto-generated method stub
}
});
}
@Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
Intent intent = new Intent(Contacts.this,
AcceptAmountActivity.class);
startActivity(intent);
overridePendingTransition(R.anim.slide_right_in,
R.anim.slide_right_out);
finish();
return true;
}
return super.onOptionsItemSelected(item);
}
/** An AsyncTask class to retrieve and load listview with contacts */
private class ListViewContactsLoader extends AsyncTask<Void, Void, Cursor> {
protected Cursor doInBackground(Void... params) {
String displayName = "";
String homePhone = "";
String mobilePhone = "";
String workPhone = "";
String contact = "";
Log.d(TAG, "ListViewContactsLoader");
ContentResolver cr = getContentResolver();
Cursor cur = cr.query(ContactsContract.Contacts.CONTENT_URI, null,
null, null, "UPPER("
+ ContactsContract.Contacts.DISPLAY_NAME + ") ASC");
String a = DatabaseUtils.dumpCursorToString(cur);
Log.e("TAG",
"String for the filter================================================================>"
+ a);
String phone = "";
if (cur.getCount() > 0) {
while (cur.moveToNext()) {
String id = cur.getString(cur
.getColumnIndex(ContactsContract.Contacts._ID));
String name = cur
.getString(cur
.getColumnIndex(ContactsContract.Contacts.DISPLAY_NAME));
if (Integer
.parseInt(cur.getString(cur
.getColumnIndex(ContactsContract.Contacts.HAS_PHONE_NUMBER))) > 0) {
System.out.println("name : " + name + ", ID : " + id);
Cursor pCur = cr
.query(ContactsContract.CommonDataKinds.Phone.CONTENT_URI,
null,
ContactsContract.CommonDataKinds.Phone.CONTACT_ID
+ " = ?", new String[] { id },
null);
String details = "";
while (pCur.moveToNext()) {
phone = pCur.getString(pCur
.getColumnIndex(Phone.NUMBER));
int type = pCur.getInt(pCur
.getColumnIndex(Phone.TYPE));
System.out.println("=======>" + "name : " + name
+ ", ID : " + id + " Mob : " + phone);
switch (type) {
case Phone.TYPE_HOME:
details += "Home:" + phone + ",";
break;
case Phone.TYPE_MOBILE:
details += "Mobile:" + phone + ",";
break;
case Phone.TYPE_WORK:
details += "Work:" + phone + ",";
break;
case Phone.TYPE_OTHER:
details += "Other:" + phone + ",";
break;
}
}
name = name.trim();
details = details.trim();
contact = name + " \n";
contact += details;
contact = contact.trim();
nameArray.add(name);
detailsArray.add(details);
pCur.close();
}
}
}
String[] nameStrArray = new String[nameArray.size()];
nameArray.toArray(nameStrArray);
String[] detailsStrArray = new String[detailsArray.size()];
detailsArray.toArray(detailsStrArray);
for (int i = 0; i < nameStrArray.length; i++) {
ContactGlobalModel cm = new ContactGlobalModel(nameStrArray[i],
detailsStrArray[i]);
arraynamelist.add(cm.getName());
arraydetailslist.add(cm.getDetails());
}
Log.d(TAG, "arraynamelist size====>"+arraynamelist.size());
Log.d(TAG, "arraydetailslist size====>"+arraydetailslist.size());
countx = arraynamelist.size();
Log.d(TAG, "Count========>"+String.valueOf(countx));
list.clear();
for(int v = 0; v < countx; v++) {
map = new HashMap<String, String>();
map.put("name", arraynamelist.get(v));
map.put("details", arraydetailslist.get(v));
list.add(map);
}
return null;
}
@Override
protected void onPostExecute(Cursor result) {
// mAdapter.swapCursor(result);
progressBarLayout.setVisibility(View.GONE);
}
}
// Killing the application
@Override
public void onBackPressed() {
// TODO Auto-generated method stub
// super.onBackPressed();
finish();
overridePendingTransition(R.anim.slide_right_in, R.anim.slide_right_out);
}
}