해결법좀 알려주세요 ㅠㅠ
ListViewActivity.java
public class ListViewActivity extends Activity implements SearchView.OnQueryTextListener,SearchView.OnCloseListener{
private EditText editUserName;
private EditText editUserTel;
public TextView tvUserName;
public TextView tvUserTel;
private DBAdapter customAdapter;
private DatabaseHelper databaseHelper;
private static final int ENTER_DATA_REQUEST_CODE = 1;
private ListView listView;
//이부분의 내용을 다른클래스에 가져오려고합니다.
public String latestUserName;
public String latestUserTel;
//
public String selectedUserName;
public String selectedUserTel;
public SearchView searchUser;
private static final String TAG = MainActivity.class.getSimpleName();
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_user_list);
searchUser = (SearchView)findViewById(R.id.search_User);
searchUser.setQueryHint("이름 검색");
searchUser.setIconifiedByDefault(false);
searchUser.setOnQueryTextListener(this);
searchUser.setOnCloseListener(this);
databaseHelper = new DatabaseHelper(this);
tvUserName = (TextView)findViewById(R.id.tv_user_name);
tvUserTel = (TextView)findViewById(R.id.tv_user_tel);
Cursor cursor = (Cursor) databaseHelper.getAllData();
if(cursor!=null && cursor.getCount()!=0){
cursor.moveToLast();
**latestUserName** = cursor.getString(cursor.getColumnIndexOrThrow(databaseHelper.USER_TABLE_COLUMN_NAME));
**latestUserTel** = cursor.getString(cursor.getColumnIndexOrThrow(databaseHelper.USER_TABLE_COLUMN_TEL));
}else{
Toast.makeText(ListViewActivity.this, "데이터가 존재하지 않음", Toast.LENGTH_SHORT).show();
}
Log.d(TAG, "latestUserINfo : " + latestUserName + " " + latestUserTel);
listView = (ListView) findViewById(R.id.list_data);
listView.setOnItemClickListener(new OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Toast.makeText(ListViewActivity.this, "Clicked Item id : "+id, Toast.LENGTH_SHORT).show();
}
});
listView.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
@Override
public boolean onItemLongClick(AdapterView<?> parent, final View view, final int position, final long id) {
Cursor cursor = (Cursor) parent.getItemAtPosition(position);
selectedUserName = cursor.getString(cursor.getColumnIndexOrThrow(databaseHelper.USER_TABLE_COLUMN_NAME));
selectedUserTel = cursor.getString(cursor.getColumnIndexOrThrow(databaseHelper.USER_TABLE_COLUMN_TEL));
final int item_id = cursor.getInt(cursor.getColumnIndex(databaseHelper.USER_TABLE_COLUMN_ID));
PopupMenu popup = new PopupMenu(ListViewActivity.this, view);
getMenuInflater().inflate(R.menu.menu_listview,popup.getMenu());
popup.setOnMenuItemClickListener(new PopupMenu.OnMenuItemClickListener() {
@Override
public boolean onMenuItemClick(MenuItem item) {
switch (item.getItemId()){
case R.id.modify:
LayoutInflater inflater =LayoutInflater.from(ListViewActivity.this);
View layout = inflater.inflate(R.layout.activity_edit_user,null);
editUserName = (EditText)layout.findViewById(R.id.edit_user_name);
editUserTel = (EditText)layout.findViewById(R.id.edit_user_tel);
AlertDialog.Builder editAlert = new AlertDialog.Builder(ListViewActivity.this);
editAlert.setTitle("EditUser");
editAlert.setView(layout);
editAlert.setPositiveButton("Modify", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
String userName = editUserName.getText().toString();
String userTel = editUserTel.getText().toString();
databaseHelper.updateUser(item_id,userName,userTel);
databaseHelper.getAllData();
customAdapter = new DBAdapter(ListViewActivity.this, databaseHelper.getAllData());
listView.setAdapter(customAdapter);
}
});
editAlert.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
return;
}
});
AlertDialog ad = editAlert.create();
ad.show();
break;
case R.id.delete:
AlertDialog.Builder deleteAlert = new AlertDialog.Builder(ListViewActivity.this);
deleteAlert.setMessage("해당 유저가 삭제됩니다.\n삭제하시겠습니까??\nUser name : "+selectedUserName).setCancelable(false).setNegativeButton("Confirm", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
databaseHelper.delete(selectedUserName);
databaseHelper.getAllData();
customAdapter = new DBAdapter(ListViewActivity.this, databaseHelper.getAllData());
listView.setAdapter(customAdapter);
}
}).setPositiveButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialog, int which) {
return;
}
});
AlertDialog alert = deleteAlert.create();
alert.show();
break;
}
return false;
}
});
popup.show();
return false;
}
});
new Handler().post(new Runnable() {
@Override
public void run() {
customAdapter = new DBAdapter(ListViewActivity.this, databaseHelper.getAllData());
listView.setAdapter(customAdapter);
}
});
}
public void onClickEnterData(View btnAdd) {
startActivityForResult(new Intent(this, EnterDataActivity.class), ENTER_DATA_REQUEST_CODE);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
if (requestCode == ENTER_DATA_REQUEST_CODE && resultCode == RESULT_OK) {
databaseHelper.insertData(data.getExtras().getString("tag_user_name"), data.getExtras().getString("tag_user_pin"));
customAdapter.changeCursor(databaseHelper.getAllData());
}
}
@Override
public boolean onClose() {
showResults("");
return false;
}
@Override
public boolean onQueryTextSubmit(String query) {
if(query.length()==0){
customAdapter = new DBAdapter(ListViewActivity.this, databaseHelper.getAllData());
listView.setAdapter(customAdapter);
}else {
showResults(query);
}
return false;
}
@Override
public boolean onQueryTextChange(String newText) {
if(newText.length()==0){
customAdapter = new DBAdapter(ListViewActivity.this, databaseHelper.getAllData());
listView.setAdapter(customAdapter);
}else{
showResults(newText);
}
return false;
}
public void showResults(String query){
Cursor cursor = databaseHelper.searchUser((query != null ? query.toString() : "@@@@"));
if(cursor == null){
}else{
String[] from = new String[]{
DatabaseHelper.USER_TABLE_COLUMN_NAME,
DatabaseHelper.USER_TABLE_COLUMN_TEL
};
int[] to = new int[]{
R.id.tv_user_name, R.id.tv_user_tel
};
SimpleCursorAdapter adapter = new SimpleCursorAdapter(ListViewActivity.this, R.layout.activity_userlist_item, cursor, from, to);
listView.setAdapter(adapter);
}
}
}
firstViewActivity.java
package com.example.cracking.groupproj;
import android.app.Activity;
import android.os.Bundle;
import android.widget.ListView;
import android.widget.TextView;
import java.text.SimpleDateFormat;
import java.util.Date;
public class firstViewActivity extends Activity{
String latestUserName;
String latestUserTel;
ListView recentList;
DBAdapter listAdapter;
ListViewActivity listViewActivity;
protected void onCreate(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_first_view);
recentList = (ListView)findViewById(R.id.recentListView);
//여기서 NullPointerException에러가 뜹니다.
latestUserName = listViewActivity.latestUserName.toString();
latestUserTel = listViewActivity.latestUserTel.toString();
//
long now = System.currentTimeMillis();
Date date = new Date(now);
SimpleDateFormat CurDateFormat = new SimpleDateFormat("yyyy년 MM월 dd일");
String strCurDate = CurDateFormat.format(date);
TextView recentDate = (TextView)findViewById(R.id.recentDate);
recentDate.setText("최근 추가 날짜 : "+strCurDate);
}
}