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켜짐 아래 활동을 열면 항상 빈 화면이 표시됩니다. 제발 안드로이드에 도움이 되십시오. 데이터베이스에서 내 목록을 채우고 데이터에서 일부 작업을 수행하고 목록보기에 표시하고 있습니다. 이 데이터를 별도의 작업으로 listview에 채울 때 잘 작동하지만 조각을 사용하여 동일한 작업을 수행하면 빈 화면이 표시됩니다.목록보기가있는 조각이있는 탭이 비어 있습니다. 빈 화면
내 탭 활동 클래스
package com.example.myexpensemanager;
import com.example.myexpensemanager.adapter.TabsPagerAdapter;
import android.app.ActionBar;
import android.app.ActionBar.Tab;
import android.app.FragmentTransaction;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.support.v4.view.ViewPager;
public class TabActivity extends FragmentActivity implements
ActionBar.TabListener {
private ViewPager viewPager;
private TabsPagerAdapter mAdapter;
private ActionBar actionBar;
// Tab titles
private String[] tabs = { "All", "Daily", "Weekly","Monthly" };
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_tab);
// Initilization
viewPager = (ViewPager) findViewById(R.id.pager);
actionBar = getActionBar();
mAdapter = new TabsPagerAdapter(getSupportFragmentManager());
viewPager.setAdapter(mAdapter);
actionBar.setHomeButtonEnabled(false);
actionBar.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
// Adding Tabs
for (String tab_name : tabs) {
actionBar.addTab(actionBar.newTab().setText(tab_name)
.setTabListener(this));
}
/**
* on swiping the viewpager make respective tab selected
* */
viewPager.setOnPageChangeListener(new ViewPager.OnPageChangeListener() {
@Override
public void onPageSelected(int position) {
// on changing the page
// make respected tab selected
actionBar.setSelectedNavigationItem(position);
}
@Override
public void onPageScrolled(int arg0, float arg1, int arg2) {
}
@Override
public void onPageScrollStateChanged(int arg0) {
}
});
}
@Override
public void onTabReselected(Tab tab, FragmentTransaction ft) {
}
@Override
public void onTabSelected(Tab tab, FragmentTransaction ft) {
// on tab selected
// show respected fragment view
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(Tab tab, FragmentTransaction ft) {
}
}
내 어댑터 클래스 조각 위치 클래스의
package com.example.myexpensemanager.adapter;
import com.example.myexpensemanager.AllExpense;
import com.example.myexpensemanager.DailyExpense;
import com.example.myexpensemanager.MonthlyExpense;
import com.example.myexpensemanager.WeeklyExpense;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentManager;
import android.support.v4.app.FragmentPagerAdapter;
import android.support.v4.app.FragmentStatePagerAdapter;
public class TabsPagerAdapter extends FragmentStatePagerAdapter{
public TabsPagerAdapter(FragmentManager supportFragmentManager) {
// TODO Auto-generated constructor stub
super(supportFragmentManager);
}
@Override
public Fragment getItem(int arg0) {
// TODO Auto-generated method stub
switch (arg0) {
case 0:
return new AllExpense();
case 1:
return new DailyExpense();
case 2:
// Movies fragment activity
return new WeeklyExpense();
case 3:
// Movies fragment activity
return new MonthlyExpense();
}
return null;
}
@Override
public int getCount() {
// TODO Auto-generated method stub
return 0;
}
}
내 하나.
import java.util.ArrayList;
import java.util.Date;
import java.util.HashMap;
import java.util.List;
import java.util.Map;
import java.util.NavigableMap;
import java.util.TreeMap;
import cal_helper.Calendar_Helper;
import com.google.common.collect.ArrayListMultimap;
import com.google.common.collect.ListMultimap;
import android.support.v4.app.Fragment;
import android.support.v7.app.ActionBarActivity;
import android.content.Context;
import android.database.Cursor;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ListView;
import android.widget.SimpleAdapter;
public class WeeklyExpense extends Fragment {
ListView lv;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.activity_history, container, false);
lv = (ListView) rootView.findViewById(R.id.history_list);
populatedata();
return rootView;
}
private void populatedata() {
// TODO Auto-generated method stub
// setContentView(R.layout.activity_history);
// populatedata();
Log.d("POint: ", "0");
//tv = (TextView)findViewById(R.id.textView123);
Context context = getActivity().getApplicationContext();
Log.d("POint: ", "05");
expensedb db = new expensedb(context);
Log.d("POint: ", "04");
Cursor cursor = db.getAllExpenses();
Log.d("POint: ", "01");
List<Expense> expenseList = new ArrayList<Expense>();
Log.d("POint: ", "02");
if (cursor.moveToFirst()) {
do {
Expense expense = new Expense();
expense.setId(Integer.parseInt(cursor.getString(0)));
expense.setDateid(cursor.getString(1));
expense.setDescription(cursor.getString(2));
expense.setAmount(Integer.parseInt(cursor.getString(3)));
expense.setDate(cursor.getString(4));
expense.setDateStamp(cursor.getString(5));
expense.setCat_id(Integer.parseInt(cursor.getString(6)));
// Adding contact to list
expenseList.add(expense);
} while (cursor.moveToNext());
}
Log.d("POint: ", "1");
ListMultimap<Integer, Expense> myMultimap = ArrayListMultimap.create();
Map<Integer, Date> myMap = new TreeMap<Integer,Date>();
Calendar_Helper cal = new Calendar_Helper();
for (Expense x : expenseList) {
Date date=cal.strtodate(x.getDate());
int key =cal.weekOfYear(date) + cal.year(date)*100;
myMultimap.put(key,x);
myMap.put(key,date);
}
Log.d("POint: ", "2");
ArrayList<HashMap<String, String>> mylist = new ArrayList<HashMap<String, String>>();
NavigableMap<Integer, Date> myMap1=((TreeMap<Integer, Date>) myMap).descendingMap();
for(Integer key : myMap1.keySet()){
List<Expense> list = new ArrayList<Expense>();
list = myMultimap.get(key);
int amount = cal_amount(list);
int week = cal.weekOfYear(myMap.get(key));
int year = cal.year(myMap.get(key));
HashMap<String, String> map = new HashMap<String, String>();
map.put("startdate", cal.startDate(week, year));
map.put("enddate",cal.endDate(week, year));
map.put("amount", Integer.toString(amount));
mylist.add(map);
}
Log.d("POint: ", "4");
//now i have the all key values
SimpleAdapter adapter = new SimpleAdapter(context, mylist, R.layout.activity_week,
new String[] {"startdate", "enddate", "amount"}, new int[] {R.id.tv_week, R.id.tv_week2, R.id.tv_Wamount});
lv.setAdapter(adapter);
}
private int cal_amount(List<Expense> list) {
int amount=0;
for(Expense x: list)
{
amount += x.getAmount();
}
return amount;
}
}