i face a question which is when i insert data into sqlite database from first tab fragment, when i select from second tab fragment it cannot show immediately only restart the apps the data can be show.
Main Activity
public class MainActivity extends AppCompatActivity implements TabLayout.OnTabSelectedListener{
//This is our tablayout
private TabLayout tabLayout;
//This is our viewPager
private ViewPager viewPager;
int ans =3;
@Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
//Adding toolbar to the activity
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
//Initializing the tablayout
tabLayout = (TabLayout) findViewById(R.id.tabLayout);
BasePagerAdapter adapter = new BasePagerAdapter(getSupportFragmentManager());
Tab1 tab1 = new Tab1();
Tab2 tab2 = new Tab2();
Tab3 tab3 = new Tab3();
adapter.addFragment(tab1, "1");
adapter.addFragment(tab2, "2");
adapter.addFragment(tab3, "3");
//Initializing viewPager
viewPager = (ViewPager) findViewById(R.id.pager);
//Adding adapter to pager
viewPager.setAdapter(adapter);
//Adding onTabSelectedListener to swipe views
tabLayout.setOnTabSelectedListener(this);
tabLayout.setupWithViewPager(viewPager);
tabLayout.setTabGravity(TabLayout.GRAVITY_FILL);
tabLayout.setupWithViewPager(viewPager);
}
@Override
public void onTabSelected(TabLayout.Tab tab) {
viewPager.setCurrentItem(tab.getPosition());
}
@Override
public void onTabUnselected(TabLayout.Tab tab) {
}
@Override
public void onTabReselected(TabLayout.Tab tab) {
}
public class BasePagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public BasePagerAdapter(FragmentManager manager) {
super(manager);
}
@Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
@Override
public int getCount() {
return mFragmentList.size();
}
@Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
public void removeFragment(int position) {
mFragmentTitleList.remove(position);
mFragmentList.remove(position);
notifyDataSetChanged();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
}
}
first fragment
public class Tab1 extends Fragment {
EditText editext,editext2,editext3;
Button test;
DBController db;
//Overriden method onCreateView
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View h = inflater.inflate(R.layout.tab1, container, false);
//Returning the layout file after inflating
//Change R.layout.tab1 in you classest
editext =(EditText)h.findViewById(R.id.editText);
editext2 =(EditText)h.findViewById(R.id.editText2);
editext3 =(EditText)h.findViewById(R.id.editText3);
test = (Button)h.findViewById(R.id.button);
test.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
String name = editext.getText().toString();
String hh = editext2.getText().toString();
String image = editext3.getText().toString();
SQLiteOpenHelper db = new DBController(getActivity());
SQLiteDatabase db1 = db.getWritableDatabase();
ContentValues cv = new ContentValues();
cv.put("CategoryName", name);
cv.put("CategoryH", hh);
cv.put("CategoryImage", image);
db1.insert("Category", null, cv);
db1.close();
}
});
return h;
}
Second Fragment
public class Tab2 extends Fragment {
List<Category> category;
DBController db;
ListView testlist;
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
View h = inflater.inflate(R.layout.tab2, container, false);
testlist = (ListView)h.findViewById(R.id.listview);
category = getProList();
testlist.setAdapter(new ViewAdapter());
return h;
}
public class ViewAdapter extends BaseAdapter {
LayoutInflater mInflater;
public ViewAdapter() {
mInflater = LayoutInflater.from(getActivity());
}
@Override
public int getCount() {
return category.size();
}
@Override
public Object getItem(int position) {
return null;
}
@Override
public long getItemId(int position) {
return position;
}
@Override
public View getView(final int position, View convertView, ViewGroup parent) {
if (convertView == null) {
convertView = mInflater.inflate(R.layout.testlist_view, null);
}
final TextView Pname = (TextView) convertView.findViewById(R.id.TPname);
Pname.setText("" + category.get(position).getCategoryName());
final TextView PX = (TextView) convertView.findViewById(R.id.TPX);
PX.setText("" + category.get(position).getCategoryH());
final TextView PY = (TextView) convertView.findViewById(R.id.TPY);
PY.setText("" + category.get(position).getCategoryImage());
notifyDataSetChanged();
return convertView;
}
}
public List<Category> getProList() {
String selectQuery = "SELECT * FROM Category ";
db = new DBController(getActivity());
SQLiteDatabase db1 = db.getReadableDatabase();
Cursor cursor = db1.rawQuery(selectQuery, null);
List<Category> Prolist = new ArrayList<Category>();
if (cursor.moveToFirst()) {
do {
Category list = new Category();
list.setCategoryName(cursor.getString(cursor.getColumnIndex("CategoryName")));
list.setCategoryW(cursor.getString(cursor.getColumnIndex("CategoryH")));
list.setCategoryImage(cursor.getString(cursor.getColumnIndex("CategoryImage")));
Prolist.add(list);
} while (cursor.moveToNext());
}
return Prolist;
}
