Develop Reference

How to display only one fragment tab in Android

I have different fragments in my MainActivity. In each fragment I implemented some features.
Now I am trying to implemented tabs for one fragments, what I'm looking for is about hide tab layout in remaining fragments.
activity.xml:
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
tools:context="com.genworks.oppm.MainActivity">
<com.google.android.material.appbar.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:id="#+id/activity_search_view_check"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity">
<include layout="#layout/toolbar"/>
<include layout="#layout/search_toolbar"
android:visibility="gone"/>
</RelativeLayout>
<com.google.android.material.tabs.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:tabMode="scrollable"
app:tabIndicatorColor="#color/White"
app:tabTextColor="#color/White"
android:background="#drawable/button_background"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
app:tabGravity="fill"/>
</com.google.android.material.appbar.AppBarLayout>
<androidx.viewpager.widget.ViewPager
android:id="#+id/viewpager"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:layout_width="match_parent"
android:layout_height="wrap_content"/>
MainActivity.java:
public class MainActivity extends AppCompatActivity {
private DrawerLayout drawerLayout;
Fragment fragment;
int CAMERA_PIC_REQUEST=20;
Menu search_menu;
MenuItem item_search;
ExpandableListView expListView;
TabLayout tabLayout;
private ProgressDialog progressDialog = null;
TextView user,firstname,lastname,mobile,role,report_to;
String user_name;
ImageView profile;
private ArrayList<Records> records;
private ArrayList<Records> recordsList=new ArrayList<>();
ViewPager viewPager;
TextView mTitle;
private RecyclerView recyclerView;
static final int REQUEST_TAKE_PHOTO = 1;
static final int REQUEST_GALLERY_PHOTO = 2;
File mPhotoFile;
FileCompressor mCompressor;
private RecyclerView.Adapter mAdapter;
String sessionId,username,first_name,last_name,mobile_no,role_id,reportto;
MenuItem refreshMenuItem;
ExpandableListView expandableList;
ExpandableListAdapterMenu mMenuAdapter;
List <ExpandedMenuModel> listDataHeader;
private final Handler handler = new Handler ( );
HashMap <ExpandedMenuModel, List <String>> listDataChild;
private RecyclerView.LayoutManager layoutManager;
private boolean ismenutoggle;
private Toolbar searchtollbar,toolbar;
boolean needLogin = false;
LinearLayout dashboard,taskmenu,account,contact,opportunity,logout,documents;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
sessionId = getIntent().getStringExtra("sessionId");
username = getIntent().getStringExtra("username");
PreferenceUtils.getUsername(this);
PreferenceUtils.getPassword(this);
first_name = getIntent().getStringExtra("firstname");
last_name = getIntent().getStringExtra("lastname");
mobile_no = getIntent().getStringExtra("mobile");
role_id = getIntent().getStringExtra("role");
reportto = getIntent().getStringExtra("reportto");
dashboard=findViewById(R.id.dashboard);
taskmenu=findViewById(R.id.taskmenu);
contact=findViewById(R.id.contactmenu);
opportunity=findViewById(R.id.opportunitymenu);
account=findViewById(R.id.accountmenu);
logout=findViewById(R.id.logout);
// user = (TextView) findViewById(R.id.username);
profile=findViewById(R.id.profile);
mCompressor = new FileCompressor(this);
firstname = (TextView) findViewById(R.id.firstname);
lastname = (TextView) findViewById(R.id.lastname);
mobile=findViewById(R.id.mobile);
role=findViewById(R.id.role);
report_to=findViewById(R.id.report_to);
firstname.setText(first_name);
lastname.setText(last_name);
mobile.setText(mobile_no);
role.setText(role_id);
report_to.setText(reportto);
// user.setText(username);
toolbar = findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
// getSupportActionBar().setTitle("DASHBOARD");
final ActionBar ab = getSupportActionBar();
ab.setDisplayOptions(ActionBar.DISPLAY_SHOW_CUSTOM);
ab.setCustomView(R.layout.toolbar_spinner);
if (ab != null) {
ab.setDisplayShowTitleEnabled(false);
mTitle = (TextView) findViewById(R.id.toolbar_title);
mTitle.setText("DASHBOARD");
mTitle.setGravity(Gravity.CENTER_HORIZONTAL);
// Typeface typeface = Typeface.createFromAsset(getApplicationContext ().getAssets (), "fonts/astype - Secca Light.otf");
// mTitle.setTypeface (typeface);
}
ab.setHomeAsUpIndicator(R.drawable.menu);
ab.setDisplayHomeAsUpEnabled(true);
//ab.setTitle ("HOME");
setSearchtollbar();
viewPager = (ViewPager) findViewById(R.id.viewpager);
setupViewPager(viewPager);
tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
fragment = new DashboardFragement();
loadFragment(fragment);
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
drawerLayout = (DrawerLayout) findViewById(R.id.drawer);
if (navigationView != null) {
setupDrawerContent (navigationView);
}
// TextView dashboard=findViewById(R.id.menu_dashboard);
dashboard.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mTitle.setText("Dashboard");
fragment = new DashboardFragement();
loadFragment(fragment);
drawerLayout.closeDrawer(GravityCompat.START);
}
});
// TextView task=findViewById(R.id.menu_task);
taskmenu.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mTitle.setText("Task List");
fragment = new TaskFragement();
loadFragment(fragment);
drawerLayout.closeDrawer(GravityCompat.START);
}
});
account.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mTitle.setText("Account List");
fragment = new AccountFragement();
loadFragment(fragment);
drawerLayout.closeDrawer(GravityCompat.START);
}
});
contact.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mTitle.setText("Contact List");
fragment = new ContactFragment();
loadFragment(fragment);
drawerLayout.closeDrawer(GravityCompat.START);
}
});
// TextView opportunity=findViewById(R.id.menu_opportunity);
opportunity.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
mTitle.setText("Opportunity List");
fragment = new SalesStageFragment();
loadFragment(fragment);
drawerLayout.closeDrawer(GravityCompat.START);
}
});
// TextView logout=findViewById(R.id.menu_logout);
logout.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
SharedPreferences preferences = getSharedPreferences("login", Context.MODE_PRIVATE);
SharedPreferences.Editor editor = preferences.edit();
editor.clear();
editor.commit();
Intent i = new Intent(MainActivity.this, LoginActivity.class);
startActivity(i);
finish();
drawerLayout.closeDrawer(GravityCompat.START);
}
});
profile.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
selectImage();
}
});
initBottomNavigationItems();
}
private void setupViewPager(ViewPager viewPager) {
ViewPagerAdapter adapter = new ViewPagerAdapter(getSupportFragmentManager());
adapter.addFragment(new TaskFragement(), "All");
adapter.addFragment(new AccountFragement(), "Incomplete");
adapter.addFragment(new ContactFragment(), "Scheduled");
adapter.addFragment(new ContactFragment(), "Today");
adapter.addFragment(new ContactFragment(), "Weekwise");
viewPager.setAdapter(adapter);
}
class ViewPagerAdapter extends FragmentPagerAdapter {
private final List<Fragment> mFragmentList = new ArrayList<>();
private final List<String> mFragmentTitleList = new ArrayList<>();
public ViewPagerAdapter(FragmentManager manager) {
super(manager);
}
#Override
public Fragment getItem(int position) {
return mFragmentList.get(position);
}
#Override
public int getCount() {
return mFragmentList.size();
}
public void addFragment(Fragment fragment, String title) {
mFragmentList.add(fragment);
mFragmentTitleList.add(title);
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitleList.get(position);
}
}
private void selectImage() {
final CharSequence[] items = {"Take Photo", "Choose from Gallery",
"Cancel"};
android.app.AlertDialog.Builder builder = new android.app.AlertDialog.Builder(MainActivity.this);
builder.setItems(items, new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int item) {
if (items[item].equals("Take Photo")) {
MainActivity.this.requestStoragePermission(true);
} else if (items[item].equals("Choose from Gallery")) {
MainActivity.this.requestStoragePermission(false);
} else if (items[item].equals("Cancel")) {
dialog.dismiss();
}
}
});
builder.show();
}
public void initBottomNavigationItems() {
BottomNavigationView bottomNavigationView = (BottomNavigationView) findViewById(R.id.navigation);
bottomNavigationView.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
Fragment fragment;
switch (item.getItemId()) {
case R.id.account:
mTitle.setText("ACCOUNT LIST");
fragment = new AccountFragement();
loadFragment(fragment);
return true;
case R.id.task:
mTitle.setText("TASK LIST");
fragment = new TaskFragement();
loadFragment(fragment);
return true;
case R.id.contact:
mTitle.setText("CONTACT LIST");
fragment = new ContactFragment();
loadFragment(fragment);
return true;
case R.id.opportunity:
mTitle.setText("OPPORTUNITY LIST");
fragment = new SalesStageFragment();
loadFragment(fragment);
return true;
}
return false;
}
});
}
private void loadFragment(Fragment fragment) {
// load fragment
FragmentTransaction transaction = getSupportFragmentManager().beginTransaction();
transaction.replace(R.id.frame_container, fragment);
transaction.addToBackStack(null);
transaction.commit();
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
MenuInflater inflater = getMenuInflater();
inflater.inflate(R.menu.menu_main, menu);
menu.findItem(R.id.search).setVisible(false);
return true;
}
private void setupDrawerContent(NavigationView navigationView) {
//revision: this don't works, use setOnChildClickListener() and setOnGroupClickListener() above instead
navigationView.setNavigationItemSelectedListener(
new NavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(MenuItem menuItem) {
if(menuItem.isChecked ()){
drawerLayout.openDrawer (GravityCompat.START);}
else {
drawerLayout.closeDrawer (GravityCompat.START);
}
return true;
}
});
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
switch (item.getItemId()) {
case android.R.id.home:
if(ismenutoggle==true) {
drawerLayout.openDrawer (GravityCompat.START);
ismenutoggle=false;
}
else{
drawerLayout.closeDrawer (GravityCompat.START);
ismenutoggle=true;
}
return true;
}
return super.onOptionsItemSelected(item);
}
private AdapterView.OnItemClickListener mDrawerItemClickedListener = new AdapterView.OnItemClickListener() {
#Override
public void onItemClick(AdapterView<?> arg0, View arg1, int position,
long arg3) {
}
};
#Override
public void onBackPressed() {
if (getSupportFragmentManager().getBackStackEntryCount() == 0) {
finish();
}
}
private DrawerLayout.DrawerListener mDrawerListener = new DrawerLayout.DrawerListener () {
#Override
public void onDrawerStateChanged(int status) {
}
#Override
public void onDrawerSlide(View view, float slideArg) {
}
#Override
public void onDrawerOpened(View view) {
drawerLayout.openDrawer (view);
}
#Override
public void onDrawerClosed(View view) {
drawerLayout.closeDrawer (view);
}
};
public void setSearchtollbar()
{
searchtollbar = (Toolbar) findViewById(R.id.searchtoolbar);
if (searchtollbar != null) {
searchtollbar.inflateMenu(R.menu.menu_search);
search_menu=searchtollbar.getMenu();
searchtollbar.setNavigationOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP)
circleReveal(R.id.searchtoolbar,1,true,false);
else
searchtollbar.setVisibility(View.GONE);
}
});
item_search = search_menu.findItem(R.id.action_filter_search);
MenuItemCompat.setOnActionExpandListener(item_search, new MenuItemCompat.OnActionExpandListener() {
#Override
public boolean onMenuItemActionCollapse(MenuItem item) {
// Do something when collapsed
if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.LOLLIPOP) {
circleReveal(R.id.searchtoolbar,1,true,false);
}
else
searchtollbar.setVisibility(View.GONE);
return true;
}
#Override
public boolean onMenuItemActionExpand(MenuItem item) {
// Do something when expanded
return true;
}
});
initSearchView();
} else
Log.d("toolbar", "setSearchtollbar: NULL");
}
public void initSearchView()
{
final SearchView searchView = (SearchView) search_menu.findItem(R.id.action_filter_search).getActionView();
// Enable/Disable Submit button in the keyboard
searchView.setSubmitButtonEnabled(false);
// Change search close button image
ImageView closeButton = searchView.findViewById(R.id.search_close_btn);
closeButton.setImageResource(R.drawable.ic_close_black_24dp);
// closeButton.setImageResource(ContextCompat.getDrawable(getApplication(), R.drawable.ic_close_black_24dp));
// set hint and the text colors
EditText txtSearch = ((EditText) searchView.findViewById(R.id.search_src_text));
txtSearch.setHint("Search..");
txtSearch.setHintTextColor(Color.DKGRAY);
txtSearch.setTextColor(getResources().getColor(R.color.colorPrimary));
// set the cursor
AutoCompleteTextView searchTextView = (AutoCompleteTextView) searchView.findViewById(R.id.search_src_text);
try {
Field mCursorDrawableRes = TextView.class.getDeclaredField("mCursorDrawableRes");
mCursorDrawableRes.setAccessible(true);
mCursorDrawableRes.set(searchTextView, R.drawable.search_cursor); //This sets the cursor resource ID to 0 or #null which will make it visible on white background
} catch (Exception e) {
e.printStackTrace();
}
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
#Override
public boolean onQueryTextSubmit(String query) {
callSearch(query);
searchView.clearFocus();
return true;
}
#Override
public boolean onQueryTextChange(String newText) {
callSearch(newText);
return true;
}
public void callSearch(String query) {
Log.i("query", "" + query);
}
});
}
#RequiresApi(api = Build.VERSION_CODES.LOLLIPOP)
public void circleReveal(int viewID, int posFromRight, boolean containsOverflow, final boolean isShow)
{
final View myView = findViewById(viewID);
int width=myView.getWidth();
if(posFromRight>0)
width-=(posFromRight*getResources().getDimensionPixelSize(R.dimen.abc_action_button_min_width_material))-(getResources().getDimensionPixelSize(R.dimen.abc_action_button_min_width_material)/ 2);
if(containsOverflow)
width-=getResources().getDimensionPixelSize(R.dimen.abc_action_button_min_width_overflow_material);
int cx=width;
int cy=myView.getHeight()/2;
Animator anim;
if(isShow)
anim = ViewAnimationUtils.createCircularReveal(myView, cx, cy, 0,(float)width);
else
anim = ViewAnimationUtils.createCircularReveal(myView, cx, cy, (float)width, 0);
anim.setDuration((long)220);
// make the view invisible when the animation is done
anim.addListener(new AnimatorListenerAdapter() {
#Override
public void onAnimationEnd(Animator animation) {
if(!isShow)
{
super.onAnimationEnd(animation);
myView.setVisibility(View.INVISIBLE);
}
}
});
// make the view visible and start the animation
if(isShow)
myView.setVisibility(View.VISIBLE);
// start the animation
anim.start();
}
public void setActionBarTitle(String title) {
mTitle.setText(title);
}
}

I think you are asking if we can create two tabs and when the user presses any of the tab, same fragment should appear instead of multiple fragments. If that is your question, may be i can help.
You will have to create one class that extends FragmentStateAdapter , then you should create a single class that extends Fragment instead of having multiple classes and a layout.
Create ClassFragmentPagerAdapter like this:
public class ClassFragmentPagerAdapter extends FragmentStateAdapter {
public ClassFragmentPagerAdapter (#NonNull FragmentManager fragmentManager, #NonNull Lifecycle lifecycle) {
super(fragmentManager, lifecycle);
}
#NonNull
#Override
public Fragment createFragment(int position) {
if (position == 0) {
return new ClassFragment ();
}
return new ClassFragment ();
}
#Override
public int getItemCount() {
return 2;
}
Then after that create the other ClassFragment that extends Fragment:
public class ClassFragment extends Fragment {
#Nullable
#Override
public View onCreateView(#NonNull LayoutInflater inflater, #Nullable ViewGroup
container, #Nullable Bundle savedInstanceState) {
super.onCreateView(inflater, container, savedInstanceState);
View view = inflater.inflate(R.layout.layout_name, container, false);
return view;
}
#Override
public void onViewCreated(#NonNull View view, #Nullable Bundle savedInstanceState)
{
super.onViewCreated(view, savedInstanceState);
//do stuff here
}
Hope it helps! Happy coding:)

Update RecyclerView from menu

I have a MainActivity with two fragments. The second fragment has RecyclerView. There is TextView ( lesson name) and ImageView(show lesson status, if it is done or not) in RecyclerView . When you click TextView, it calls another Activity with lesson. After you make the lesson you will go back to MainActivity. After that lessons ImageView will be changed from nothing to resourse 'ic_lessondone'. Also there is a menu in MainActivity. Menu have item 'Reset lessons'. When you press 'Reset lessons' all ImageViews wont show any images. So there are two problems. 1) if I do, for example , only 6th lesson. I will have image 'lessondone'. When i press 'Reset lessons' image will disappear. But when i go back to menu again and press 'Reset lessons', Image will appear again and rise to previous lesson ( 5th). 2) If i switch off display, image will also appear to previous lessons till to 0th.
Its seems i have a problem with onResume.
Help me please.
public class MainActivity extends AppCompatActivity
{
private DrawerLayout mDrawerLayout;
#Override
protected void onCreate(Bundle savedInstanceState)
{
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(toolbar);
final ActionBar ab = getSupportActionBar();
ab.setHomeAsUpIndicator(R.drawable.ic_menu);
ab.setDisplayHomeAsUpEnabled(true);
mDrawerLayout = (DrawerLayout) findViewById(R.id.drawer_layout);
NavigationView navigationView = (NavigationView) findViewById(R.id.nav_view);
if (navigationView != null)
{
setupDrawerContent(navigationView);
}
ViewPager viewPager = (ViewPager) findViewById(R.id.viewpager);
if (viewPager != null)
{
setupViewPager(viewPager);
}
// Круглая кнопка
FloatingActionButton fab = (FloatingActionButton) findViewById(R.id.fab);
fab.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view)
{
Snackbar.make(view, "Here's a Snackbar", Snackbar.LENGTH_LONG)
.setAction("Action", null).show();
}
});
// Картинки для табов
TabLayout tabLayout = (TabLayout) findViewById(R.id.tabs);
tabLayout.setupWithViewPager(viewPager);
tabLayout.getTabAt(0).setIcon(R.drawable.ic_home);
tabLayout.getTabAt(1).setIcon(R.drawable.ic_lessons);
}
#Override
public boolean onCreateOptionsMenu(Menu menu)
{
getMenuInflater().inflate(R.menu.sample_actions, menu);
return true;
}
#Override
public boolean onPrepareOptionsMenu(Menu menu)
{
switch (AppCompatDelegate.getDefaultNightMode())
{
case AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM:
menu.findItem(R.id.menu_night_mode_system).setChecked(true);
break;
case AppCompatDelegate.MODE_NIGHT_AUTO:
menu.findItem(R.id.menu_night_mode_auto).setChecked(true);
break;
case AppCompatDelegate.MODE_NIGHT_YES:
menu.findItem(R.id.menu_night_mode_night).setChecked(true);
break;
case AppCompatDelegate.MODE_NIGHT_NO:
menu.findItem(R.id.menu_night_mode_day).setChecked(true);
break;
}
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item)
{
switch (item.getItemId())
{
case android.R.id.home:
mDrawerLayout.openDrawer(GravityCompat.START);
return true;
case R.id.menu_night_mode_system:
setNightMode(AppCompatDelegate.MODE_NIGHT_FOLLOW_SYSTEM);
break;
case R.id.menu_night_mode_day:
setNightMode(AppCompatDelegate.MODE_NIGHT_NO);
break;
case R.id.menu_night_mode_night:
setNightMode(AppCompatDelegate.MODE_NIGHT_YES);
break;
case R.id.menu_night_mode_auto:
setNightMode(AppCompatDelegate.MODE_NIGHT_AUTO);
break;
}
return super.onOptionsItemSelected(item);
}
private void setNightMode(#AppCompatDelegate.NightMode int nightMode)
{
AppCompatDelegate.setDefaultNightMode(nightMode);
if (Build.VERSION.SDK_INT >= 11)
{
recreate();
}
}
private void setupViewPager(ViewPager viewPager)
{
Adapter adapter = new Adapter(getSupportFragmentManager());
adapter.addFragment(new Fragment(), "");
adapter.addFragment(new LessonsListFragment(), "");
viewPager.setAdapter(adapter);
}
// Главное меню
private void setupDrawerContent(NavigationView navigationView)
{
navigationView.setNavigationItemSelectedListener(
new NavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(MenuItem menuItem)
{
menuItem.setChecked(true);
if (menuItem.getTitle().equals("Reset lessons"))
{
// Обнуляем файл с рузультатами уроков
LessonsListFragment.sLessonsPref.edit().clear().commit();
// Перерисовываем весь писок уроков
LessonsListFragment.rv.getAdapter().notifyItemRangeChanged(0, LessonsListFragment.rv.getAdapter().getItemCount());
}
mDrawerLayout.closeDrawers();
return true;
}
});
}
static class Adapter extends FragmentPagerAdapter
{
private final List<Fragment> mFragments = new ArrayList<>();
private final List<String> mFragmentTitles = new ArrayList<>();
public Adapter(FragmentManager fm)
{
super(fm);
}
public void addFragment(Fragment fragment, String title)
{
mFragments.add(fragment);
mFragmentTitles.add(title);
}
// Получаем конкретный фрагмент
#Override
public Fragment getItem(int position)
{
return mFragments.get(position);
}
// Количество фрагментов для viewpager (2)
#Override
public int getCount()
{
return mFragments.size();
}
#Override
public CharSequence getPageTitle(int position)
{
return mFragmentTitles.get(position);
}
}
}
Fragment
public class LessonsListFragment extends Fragment
{
// Уроки
// static private Map<String,?> mLessonsKeys ;
static SharedPreferences sLessonsPref;
static RecyclerView rv;
#Nullable
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
loadSharedPreferenses();
rv = (RecyclerView) inflater.inflate(R.layout.fragment_cheese_list, container, false);
setupRecyclerView(rv);
return rv;
}
// Загружаем список пройденных уроков
public void loadSharedPreferenses()
{
sLessonsPref = this.getActivity().getSharedPreferences("LessonsResults", Context.MODE_PRIVATE);
}
// Количество строк в листе
private void setupRecyclerView(RecyclerView recyclerView)
{
recyclerView.setLayoutManager(new LinearLayoutManager(recyclerView.getContext()));
recyclerView.setAdapter(new SimpleStringRecyclerViewAdapter(getActivity(), getRandomSublist(Cheeses.sCheeseStrings, Cheeses.sCheeseStrings.length)));
}
// Задаем Строки
private List<String> getRandomSublist(String[] array, int amount)
{
ArrayList<String> list = new ArrayList<>(amount);
//Random random = new Random();
while (list.size() < amount)
{
list.add(array[list.size()]);
}
return list;
}
//Отработка перерисования окна, при возврате к ней
#Override
public void onResume()
{
super.onResume();
//loadSharedPreferenses();
//Toast.makeText(null, "Refreshed", Toast.LENGTH_SHORT).show();
if (rv.getAdapter() != null)
{
rv.getAdapter().notifyDataSetChanged();
}
}
// Адаптер
public static class SimpleStringRecyclerViewAdapter
extends RecyclerView.Adapter<SimpleStringRecyclerViewAdapter.ViewHolder>
{
private final TypedValue mTypedValue = new TypedValue();
private int mBackground;
private List<String> mValues;
public static class ViewHolder extends RecyclerView.ViewHolder
{
// Номер урока, передается в webactivity
public int mLessonNumber;
public final View mView;
public final ImageView mImageView;
public final TextView mTextView;
public ViewHolder(View view)
{
super(view);
mView = view;
mImageView = (ImageView) view.findViewById(R.id.avatar);
mTextView = (TextView) view.findViewById(android.R.id.text1);
}
#Override
public String toString()
{
return super.toString() + " '" + mTextView.getText();
}
}
public String getValueAt(int position)
{
return mValues.get(position);
}
public SimpleStringRecyclerViewAdapter(Context context, List<String> items)
{
context.getTheme().resolveAttribute(R.attr.selectableItemBackground, mTypedValue, true);
mBackground = mTypedValue.resourceId;
mValues = items;
}
// Создаем холдер с полезной нагрузкой
#Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType)
{
View view = LayoutInflater.from(parent.getContext())
.inflate(R.layout.list_item, parent, false);
view.setBackgroundResource(mBackground);
return new ViewHolder(view);
}
//Создаем список уроков
#Override
public void onBindViewHolder(final ViewHolder holder, int position)
{
holder.mLessonNumber = position + 1;
// Увеличиваем позицион на 1 что не было 0 урока
holder.mTextView.setText((position + 1) + " " + mValues.get(position));
// Если урок пройден
String finished = sLessonsPref.getString((position + 1) + "", "");
if (finished.equals("1"))
{
// Меняем его цвет
//holder.mTextView.setTextColor(R.color.white);
Glide.with(holder.mImageView.getContext()).load(R.drawable.ic_lessondone)
//.load(Cheeses.getRandomCheeseDrawable())
.fitCenter()
.into(holder.mImageView);
Log.d("Glide", "Work");
}
else
{
holder.mTextView.setTextColor(R.color.black);
// holder.mImageView.setVisibility(View.GONE);
}
// Вызов WebActivity
holder.mView.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v)
{
Context context = v.getContext();
Intent intent = new Intent(context, WebActivity.class);
// Передаем вебвью номер урока и запускаем ее
intent.putExtra(WebActivity.EXTRA_NAME, holder.mLessonNumber);
context.startActivity(intent);
}
});
}
// Определяем количество выводимых строк
#Override
public int getItemCount()
{
return mValues.size();
}
}
}

Implement a reset() method in the adapter that mark all items as "not done" and then try:
LessonsListFragment.rv.getAdapter().reset();
LessonsListFragment.rv.getAdapter().notifyDataSetChanged();
instead of:
LessonsListFragment.rv.getAdapter().notifyItemRangeChanged(0, LessonsListFragment.rv.getAdapter().getItemCount());
inside onNavigationItemSelected.
Also, you shouldn't be using static variables (like static RecyclerView rv), use private vars with getters

The problem was in else statement. I added there this code, and now its ok. notifydatachanged work correctly from navigationview
if (finished.equals("1"))
{
// Меняем его цвет
//holder.mTextView.setTextColor(R.color.white);
Glide.with(holder.mImageView.getContext()).load(R.drawable.ic_lessondone)
.fitCenter()
.into(holder.mImageView);
Log.d("Glide", "Work");
}
else
{
Glide.with(holder.mImageView.getContext()).load(R.color.white)
.fitCenter()
.into(holder.mImageView);
holder.mTextView.setTextColor(R.color.black);
}

Navigation drawer stuck when offline data loading

I am developing news app user can download video and image.
So I developed navigation drawer with different fragment with material design. But I am facing some problem in it when I click gallery (where I show the downloaded video and images) it stuck for some time and then open fragment. it happened only in specific fragment but not all.
see Video here.
Here is my code:
MainActivity.java
public class MainActivity extends AppCompatActivity implements FragmentDrawer.FragmentDrawerListener {
private static String TAG = MainActivity.class.getSimpleName();
private Toolbar mToolbar;
private FragmentDrawer drawerFragment;
TextView mTitle;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
mToolbar = (Toolbar) findViewById(R.id.toolbar);
setSupportActionBar(mToolbar);
if (getSupportActionBar() != null)
{
getSupportActionBar().setDisplayShowHomeEnabled(true);
}
mTitle = (TextView) mToolbar.findViewById(R.id.tv_toolbar_title);
drawerFragment = (FragmentDrawer)
getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), mToolbar);
drawerFragment.setDrawerListener(this);
// display the first navigation drawer view on app launch
displayView(0);
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
/* if (id == R.id.action_search) {
Toast.makeText(getApplicationContext(), "Search action is selected!", Toast.LENGTH_SHORT).show();
return true;
}*/
return super.onOptionsItemSelected(item);
}
#Override
public void onDrawerItemSelected(View view, int position) {
displayView(position);
}
private void displayView(int position) {
Fragment fragment = null;
String title = getString(R.string.app_name);
switch (position) {
case 0:
fragment = new HomeFragment();
title = getString(R.string.title_home);
mTitle.setText(title);
break;
case 1:
fragment = new GalleryFragment();
title = getString(R.string.title_gallery);
mTitle.setText(title);
break;
case 2:
fragment = new SettingFragment();
title = getString(R.string.title_setting);
mTitle.setText(title);
break;
case 3:
fragment = new AboutusFragment();
title = getString(R.string.title_aboutus);
mTitle.setText(title);
break;
case 4:
fragment = new ContactusFragment();
title = getString(R.string.title_contactus);
mTitle.setText(title);
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container_body, fragment);
fragmentTransaction.commit();
// set the toolbar title
if (getSupportActionBar() != null)
getSupportActionBar().setTitle(title);
}
}
}
FragmentDrawer.java
public class FragmentDrawer extends Fragment {
private static String TAG = FragmentDrawer.class.getSimpleName();
private RecyclerView recyclerView;
private ActionBarDrawerToggle mDrawerToggle;
private static DrawerLayout mDrawerLayout;
private NavigationDrawerAdapter adapter;
private View containerView;
private static String[] titles = null;
private static int[] ic_nav_drw = {R.drawable.ic_setting, R.drawable.gallery, R.drawable.setting, R.drawable.aboutus, R.drawable.contactus};
private FragmentDrawerListener drawerListener;
ImageView profile;
TextView tv_name;
public FragmentDrawer() {
}
public void setDrawerListener(FragmentDrawerListener listener) {
this.drawerListener = listener;
}
public static List<NavDrawerItem> getData() {
List<NavDrawerItem> data = new ArrayList<>();
// preparing navigation drawer items
for (int i = 0; i < titles.length; i++) {
NavDrawerItem navItem = new NavDrawerItem();
navItem.setTitle(titles[i]);
navItem.setIcon(ic_nav_drw[i]);
data.add(navItem);
}
return data;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// drawer labels
titles = getActivity().getResources().getStringArray(R.array.nav_drawer_labels);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflating view layout
View layout = inflater.inflate(R.layout.fragment_navigation_drawer, container, false);
recyclerView = (RecyclerView) layout.findViewById(R.id.drawerList);
tv_name = (TextView) layout.findViewById(R.id.tv_name);
profile = (ImageView) layout.findViewById(R.id.profile);
SharedPreferences settings = getActivity().getSharedPreferences("preference", 0);
String name = settings.getString("name","");
tv_name.setText(name);
profile.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View v) {
Toast.makeText(getActivity(), "You click profile", Toast.LENGTH_SHORT).show();
}
});
adapter = new NavigationDrawerAdapter(getActivity(), getData());
recyclerView.setAdapter(adapter);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
recyclerView.addOnItemTouchListener(new RecyclerTouchListener(getActivity(), recyclerView, new ClickListener() {
#Override
public void onClick(View view, int position) {
drawerListener.onDrawerItemSelected(view, position);
mDrawerLayout.closeDrawer(containerView);
}
#Override
public void onLongClick(View view, int position) {
}
}));
return layout;
}
public void setUp(int fragmentId, DrawerLayout drawerLayout, final Toolbar toolbar) {
containerView = getActivity().findViewById(fragmentId);
mDrawerLayout = drawerLayout;
mDrawerToggle = new ActionBarDrawerToggle(getActivity(), drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) {
#Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
getActivity().invalidateOptionsMenu();
}
#Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
getActivity().invalidateOptionsMenu();
}
#Override
public void onDrawerSlide(View drawerView, float slideOffset) {
super.onDrawerSlide(drawerView, slideOffset);
toolbar.setAlpha(1 - slideOffset / 2);
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
mDrawerLayout.post(new Runnable() {
#Override
public void run() {
mDrawerToggle.syncState();
}
});
}
public static interface ClickListener {
public void onClick(View view, int position);
public void onLongClick(View view, int position);
}
static class RecyclerTouchListener implements RecyclerView.OnItemTouchListener {
private GestureDetector gestureDetector;
private ClickListener clickListener;
public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) {
this.clickListener = clickListener;
gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
#Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null) {
clickListener.onLongClick(child, recyclerView.getChildPosition(child));
}
}
});
}
#Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
View child = rv.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) {
clickListener.onClick(child, rv.getChildPosition(child));
}
return false;
}
#Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
}
public interface FragmentDrawerListener {
public void onDrawerItemSelected(View view, int position);
}
}
activity_main.xml
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<LinearLayout
android:id="#+id/container_toolbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical">
<include
android:id="#+id/toolbar"
layout="#layout/toolbar" />
</LinearLayout>
<FrameLayout
android:id="#+id/container_body"
android:layout_width="fill_parent"
android:layout_height="0dp"
android:layout_weight="1" />
</LinearLayout>
<fragment
android:id="#+id/fragment_navigation_drawer"
android:name="com.bicubic.botadnews.fragment.FragmentDrawer"
android:layout_width="#dimen/nav_drawer_width"
android:layout_height="match_parent"
android:layout_gravity="start"
app:layout="#layout/fragment_navigation_drawer"
tools:layout="#layout/fragment_navigation_drawer" />
</android.support.v4.widget.DrawerLayout>
fragment_navigation_drawer.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#android:color/white">
<RelativeLayout
android:id="#+id/nav_header_container"
android:layout_width="match_parent"
android:layout_height="140dp"
android:layout_alignParentTop="true"
android:background="#color/colorPrimary">
<ImageView
android:id="#+id/profile"
android:layout_width="70dp"
android:layout_height="70dp"
android:layout_centerInParent="true"
android:scaleType="fitCenter"
android:src="#drawable/ic_profile" />
<TextView
android:id="#+id/tv_name"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Name"
android:textColor="#color/white"
android:textSize="20sp"
android:layout_marginBottom="10dp"
android:layout_alignParentBottom="true"
android:layout_centerHorizontal="true" />
</RelativeLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/drawerList"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="#id/nav_header_container"
android:layout_marginTop="15dp" />
</RelativeLayout>
Here is my gallery fragment
Editted GalleryFragment.java
public class GalleryFragment extends Fragment implements View.OnClickListener {
View rootView;
static RecyclerView rv_video;
RecyclerView rv_image;
static List<File> videofiles;
static List<File> imagefiles;
Button bt_video, bt_image;
private static Context context ;
public GalleryFragment() {
// Required empty public constructor
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
rootView = inflater.inflate(R.layout.fragment_gallery, container, false);
rv_video = (RecyclerView) rootView.findViewById(R.id.rv_video);
rv_image = (RecyclerView) rootView.findViewById(R.id.rv_image);
bt_video = (Button) rootView.findViewById(R.id.bt_video);
bt_image = (Button) rootView.findViewById(R.id.bt_image);
bt_video.setBackgroundResource(R.color.colorAccent);
bt_video.setOnClickListener(this);
bt_image.setOnClickListener(this);
context = getActivity();
LinearLayoutManager linearLayoutManager = new LinearLayoutManager(getActivity());
rv_video.setLayoutManager(linearLayoutManager);
rv_video.setHasFixedSize(true);
LinearLayoutManager linearLayoutManager1 = new LinearLayoutManager(getActivity());
rv_image.setLayoutManager(linearLayoutManager1);
rv_image.setHasFixedSize(true);
videofiles = new ArrayList<>();
imagefiles = new ArrayList<>();
new LoadOfflineData().execute();
rootView.post(new Runnable() {
#Override
public void run() {
new LoadOfflineData().execute();
}
});
// Inflate the layout for this fragment
return rootView;
}
public static class LoadOfflineData extends AsyncTask<Void, Void, Void> {
ProgressDialog progressBar;
#Override
protected void onPreExecute() {
super.onPreExecute();
progressBar = new ProgressDialog(context);
progressBar.setMessage("Loading...");
progressBar.show();
}
#Override
protected Void doInBackground(Void... voids) {
String video_path = Environment.getExternalStorageDirectory().getPath() + "/Botad News/Videos";
Log.d("Files", "Path: " + video_path);
File checkFile = new File(video_path);
// videofiles = new ArrayList<>();
File[] files = new File[0];
if (checkFile.isDirectory()) {
File directory = new File(video_path);
files = directory.listFiles();
videofiles.addAll(Arrays.asList(files));
} else {
// Toast.makeText(getActivity(), "Folder not Found", Toast.LENGTH_SHORT).show();
Log.e(TAG, "doInBackground: folder not found" );
}
String image_path = Environment.getExternalStorageDirectory().getPath() + "/Botad News/Images";
Log.d("Files", "Path: " + image_path);
File checkFileImages = new File(image_path);
// imagefiles = new ArrayList<>();
File[] filesImage = new File[0];
if (checkFileImages.isDirectory()) {
File directory = new File(image_path);
filesImage = directory.listFiles();
imagefiles.addAll(Arrays.asList(filesImage));
} else {
// Toast.makeText(getActivity(), "Folder not Found", Toast.LENGTH_SHORT).show();
Log.e(TAG, "doInBackground: folder not found" );
}
Log.d("Files", "Size: " + files.length);
return null;
}
#Override
protected void onPostExecute(Void aVoid) {
super.onPostExecute(aVoid);
progressBar.dismiss();
if (videofiles.size() > 0) {
RvGalleryVideoAdapter adapter = new RvGalleryVideoAdapter(videofiles, context);
rv_video.setAdapter(adapter);
} else {
Toast.makeText(context, "Data not found", Toast.LENGTH_SHORT).show();
}
}
}
#Override
public void onAttach(Activity activity) {
super.onAttach(activity);
}
#Override
public void onDetach() {
super.onDetach();
}
#Override
public void onClick(View view) {
switch (view.getId()) {
case R.id.bt_video:
bt_video.setBackgroundResource(R.color.colorAccent);
bt_image.setBackgroundResource(R.color.colorPrimary);
rv_image.setVisibility(View.GONE);
rv_video.setVisibility(View.VISIBLE);
if (videofiles.size() > 0) {
RvGalleryVideoAdapter adapter = new RvGalleryVideoAdapter(videofiles, getActivity());
rv_video.setAdapter(adapter);
} else {
Toast.makeText(getActivity(), "Data not found", Toast.LENGTH_SHORT).show();
}
break;
case R.id.bt_image:
bt_image.setBackgroundResource(R.color.colorAccent);
bt_video.setBackgroundResource(R.color.colorPrimary);
rv_image.setVisibility(View.VISIBLE);
rv_video.setVisibility(View.GONE);
if (imagefiles.size() > 0) {
RvGalleryImageAdapter adapter_image = new RvGalleryImageAdapter(imagefiles, getActivity());
rv_image.setAdapter(adapter_image);
} else {
Toast.makeText(getActivity(), "Data not found", Toast.LENGTH_SHORT).show();
}
break;
default:
break;
}
}
}

In your AsyncTask, you are accessing the class fields of the Fragment! This will actually block the UI Thread :-(
The lines
videofiles = new ArrayList<>();
imagefiles = new ArrayList<>();
cannot be there. You need to create local lists, put data in them and then return it in onPostExecute().
Start by replacing
public class LoadOfflineData extends AsyncTask<Void, Void, Void> {
with
public static class LoadOfflineData extends AsyncTask<Void, Void, Void> {
This will give you errors in places you need to change :-)

I found the answer.
It is in my RecyclerAdapter when i get thumbnail using inbuilt class so it will take time to set it see my
Old code
Bitmap bmThumbnail;
//MICRO_KIND, size: 96 x 96 thumbnail
bmThumbnail = ThumbnailUtils.createVideoThumbnail(sdcard_path + "/Botad News/Videos/" + fileName, MediaStore.Images.Thumbnails.MICRO_KIND);
holder.img_main.setImageBitmap(bmThumbnail);
New code is using glide library so lib automatically handle the thread i assume.
BitmapPool bitmapPool = Glide.get(context).getBitmapPool();
int microSecond = 6000000;// 6th second as an example
VideoBitmapDecoder videoBitmapDecoder = new VideoBitmapDecoder(microSecond);
FileDescriptorBitmapDecoder fileDescriptorBitmapDecoder = new FileDescriptorBitmapDecoder(videoBitmapDecoder, bitmapPool, DecodeFormat.PREFER_ARGB_8888);
Glide.with(context)
.load(sdcard_path + "/Botad News/Videos/" + fileName)
.asBitmap()
.override(250,250)// Example
.videoDecoder(fileDescriptorBitmapDecoder)
.into(holder.img_main);
Found solution HERE....

Error on Fragment?

Hello everyone I am developing an android app and I am new to this development.
I am facing on error which says:
Error:(134, 19) error: RecyclerTouchListener is not abstract and does not override abstract method onRequestDisallowInterceptTouchEvent(boolean) in OnItemTouchListener
Here is my code from where the above error appears
FragmentDrawer.java
public class FragmentDrawer extends Fragment {
private static String TAG = FragmentDrawer.class.getSimpleName();
private RecyclerView recyclerView;
private ActionBarDrawerToggle mDrawerToggle;
private DrawerLayout mDrawerLayout;
private NavigationDrawerAdapter adapter;
private View containerView;
private static String[] titles = null;
private FragmentDrawerListener drawerListener;
public FragmentDrawer() {
}
public void setDrawerListener(FragmentDrawerListener listener) {
this.drawerListener = listener;
}
public static List<NavDrawerItem> getData() {
List<NavDrawerItem> data = new ArrayList<>();
// preparing navigation drawer items
for (int i = 0; i < titles.length; i++) {
NavDrawerItem navItem = new NavDrawerItem();
navItem.setTitle(titles[i]);
data.add(navItem);
}
return data;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// drawer labels
titles = getActivity().getResources().getStringArray(R.array.nav_drawer_labels);
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflating view layout
View layout = inflater.inflate(R.layout.fragment_navigation_drawer, container, false);
recyclerView = (RecyclerView) layout.findViewById(R.id.drawerList);
adapter = new NavigationDrawerAdapter(getActivity(), getData());
recyclerView.setAdapter(adapter);
recyclerView.setLayoutManager(new LinearLayoutManager(getActivity()));
recyclerView.addOnItemTouchListener(new RecyclerTouchListener(getActivity(), recyclerView, new ClickListener() {
#Override
public void onClick(View view, int position) {
drawerListener.onDrawerItemSelected(view, position);
mDrawerLayout.closeDrawer(containerView);
}
#Override
public void onLongClick(View view, int position) {
}
}));
return layout;
}
public void setUp(int fragmentId, DrawerLayout drawerLayout, final Toolbar toolbar) {
containerView = getActivity().findViewById(fragmentId);
mDrawerLayout = drawerLayout;
mDrawerToggle = new ActionBarDrawerToggle(getActivity(), drawerLayout, toolbar, R.string.drawer_open, R.string.drawer_close) {
#Override
public void onDrawerOpened(View drawerView) {
super.onDrawerOpened(drawerView);
getActivity().invalidateOptionsMenu();
}
#Override
public void onDrawerClosed(View drawerView) {
super.onDrawerClosed(drawerView);
getActivity().invalidateOptionsMenu();
}
#Override
public void onDrawerSlide(View drawerView, float slideOffset) {
super.onDrawerSlide(drawerView, slideOffset);
toolbar.setAlpha(1 - slideOffset / 2);
}
};
mDrawerLayout.setDrawerListener(mDrawerToggle);
mDrawerLayout.post(new Runnable() {
#Override
public void run() {
mDrawerToggle.syncState();
}
});
}
public static interface ClickListener {
public void onClick(View view, int position);
public void onLongClick(View view, int position);
}
static class RecyclerTouchListener implements RecyclerView.OnItemTouchListener {
private GestureDetector gestureDetector;
private ClickListener clickListener;
public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) {
this.clickListener = clickListener;
gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
#Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null) {
clickListener.onLongClick(child, recyclerView.getChildPosition(child));
}
}
});
}
#Override
public boolean onInterceptTouchEvent(RecyclerView rv, MotionEvent e) {
View child = rv.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null && gestureDetector.onTouchEvent(e)) {
clickListener.onClick(child, rv.getChildPosition(child));
}
return false;
}
#Override
public void onTouchEvent(RecyclerView rv, MotionEvent e) {
}
}
/* public void myClickMethod(View v) {
switch(v.getid()) {
// Just like you were doing
}
}*/
public interface FragmentDrawerListener {
public void onDrawerItemSelected(View view, int position);
}
MainActivity.java
public class MainActivity extends ActionBarActivity implements FragmentDrawer.FragmentDrawerListener {
private static String TAG = MainActivity.class.getSimpleName();
private CharSequence mDrawerTitle;
private ActionBar actionBar;
// used to store app title
private CharSequence mTitle;
private Toolbar mToolbar;
private FragmentDrawer drawerFragment;
private ActionBarDrawerToggle mDrawerToggle;
private Fragment fra;
// FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
View view;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
ImageView myImage = (ImageView) findViewById(R.id.imageView);
myImage.setAlpha(50);
mToolbar = (Toolbar) findViewById(R.id.tool_bar1);
setSupportActionBar(mToolbar);
mToolbar.setNavigationIcon(R.drawable.logofinal);
mTitle = mDrawerTitle = getTitle();
/* getSupportActionBar().setDisplayShowHomeEnabled(true);
getSupportActionBar().setHomeButtonEnabled(false);*/
drawerFragment = (FragmentDrawer) getSupportFragmentManager().findFragmentById(R.id.fragment_navigation_drawer);
drawerFragment.setUp(R.id.fragment_navigation_drawer, (DrawerLayout) findViewById(R.id.drawer_layout), mToolbar);
drawerFragment.setDrawerListener(this);
/**
* Creating all buttons instances
* */
// Dashboard News feed button
/*Button btn_newsfeed = (Button)findViewById(R.id.btn_news_feed);
btn_newsfeed.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
switch(view.getId())
{
case R.id.btn_news_feed:
fra= new HomeFragment();
break;
}
}
});
Button btn_friends = (Button) findViewById(R.id.btn_events);
btn_friends.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
switch(view.getId())
{
case R.id.btn_events:
fra= new ContactFragment();
break;
}
}
});*/
// Dashboard Friends button
Button btn_newsfeed = (Button)findViewById(R.id.btn_news_feed);
Button btn_friends = (Button) findViewById(R.id.btn_friends);
// Dashboard Messages button
Button btn_messages = (Button) findViewById(R.id.btn_messages);
// Dashboard Places button
Button btn_places = (Button) findViewById(R.id.btn_places);
// Dashboard Events button
Button btn_events = (Button) findViewById(R.id.btn_events);
// Dashboard Photos button
Button btn_photos = (Button) findViewById(R.id.btn_photos);
//Button btn_Maps = (Button) findViewById(R.id.btn_maps);
/**
* Handling all button click events
* */
// Listening to News Feed button click*/
btn_friends.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Launching News Feed Screen
Intent i = new Intent(MainActivity.this, AboutActivity.class);
startActivity(i);
}
});
// Listening Friends button click
btn_newsfeed.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Launching News Feed Screen
Intent i = new Intent(MainActivity.this, HomeFragment.class);
startActivity(i);
}
});
// Listening Messages button click
btn_messages.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Launching News Feed Screen
Intent i = new Intent(MainActivity.this, MessagesFragment.class);
startActivity(i);
}
});
// Listening to Places button click
btn_places.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Launching News Feed Screen
Intent i = new Intent(MainActivity.this, FriendsFragment.class);
startActivity(i);
}
});
// Listening to Events button click
btn_events.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Launching News Feed Screen
Intent i = new Intent(MainActivity.this, CampusFragment.class);
startActivity(i);
}
});
// Listening to Photos button click
btn_photos.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
// Launching News Feed Screen
Intent i = new Intent(MainActivity.this, ContactFragment.class);
startActivity(i);
}
});
}
/* public void myClickmethod(View v) {
switch (v.getId()) {
case R.id.btn_news_feed:
Intent i = new Intent(MainActivity.this, HomeFragment.class);
startActivity(i);
break;
default:
break;
}
}*/
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
getMenuInflater().inflate(R.menu.menu_main, menu);
return true;
}
static class Adapter extends FragmentPagerAdapter {
private final List<Fragment> mFragments = new ArrayList<>();
private final List<String> mFragmentTitles = new ArrayList<>();
public Adapter(FragmentManager fm) {
super(fm);
}
public void addFragment(Fragment fragment, String title) {
mFragments.add(fragment);
mFragmentTitles.add(title);
}
#Override
public Fragment getItem(int position) {
return mFragments.get(position);
}
#Override
public int getCount() {
return mFragments.size();
}
#Override
public CharSequence getPageTitle(int position) {
return mFragmentTitles.get(position);
}
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
//noinspection SimplifiableIfStatement
if (id == R.id.action_settings) {
return true;
}
if(id == R.id.action_search){
Toast.makeText(getApplicationContext(), "Search action is selected!", Toast.LENGTH_SHORT).show();
return true;
}
return super.onOptionsItemSelected(item);
}
public void setTitle(CharSequence title) {
mTitle = title;
getSupportActionBar().setTitle(mTitle);
}
#Override
public void onDrawerItemSelected(View view, int position) {
displayView(position);
}
private void displayView(int position) {
Fragment fragment = null;
Intent intent;
String title = getString(R.string.app_name);
switch (position) {
case 0:
Intent i = new Intent(MainActivity.this, HomeFragment.class);
title = getString(R.string.title_home);
startActivity(i);
break;
case 1:
i = new Intent(MainActivity.this, FriendsFragment.class);
title = getString(R.string.title_friends);
startActivity(i);
break;
case 2:
Intent i2=new Intent(getApplicationContext(),MessagesFragment.class);
title = getString(R.string.title_messages);
startActivity(i2);
break;
/* case 3:
Intent i1 = new Intent(MainActivity.this, FriendsFragment.class);
startActivity(i1);
title = getString(R.string.title_department);
startActivity(i1);
break;*/
case 3:
i = new Intent(MainActivity.this, CampusFragment.class);
title = getString(R.string.title_campus_life);
startActivity(i);
break;
case 4:
i = new Intent(MainActivity.this, ContactFragment.class);
title = getString(R.string.title_contact);
startActivity(i);
break;
default:
break;
}
if (fragment != null) {
FragmentManager fragmentManager = getSupportFragmentManager();
FragmentTransaction fragmentTransaction = fragmentManager.beginTransaction();
fragmentTransaction.replace(R.id.container_body, fragment);
fragmentTransaction.commit();
// set the toolbar title
getSupportActionBar().setTitle(title);
}
}
public void onBackPressed() {
AlertDialog.Builder alertDlg = new AlertDialog.Builder(this);
alertDlg.setMessage("Are you sure you want to exit?");
alertDlg.setCancelable(false);
alertDlg.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
public void onClick(DialogInterface dialog, int id) {
MainActivity.super.onBackPressed();
}
}
);
alertDlg.setNegativeButton("No", new DialogInterface.OnClickListener() {
#Override
public void onClick(DialogInterface dialog, int which) {
// We do nothing
}
});
alertDlg.create().show();
}
}
Would be grateful if anyone helps me.

It sounds like you just need to override the onRequestDisallowTouchEvent() method on your RecyclerTouchListener.
Try adding this within your RecyclerTouchListener class:
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
}
So.. your code should now look like this:
public RecyclerTouchListener(Context context, final RecyclerView recyclerView, final ClickListener clickListener) {
this.clickListener = clickListener;
gestureDetector = new GestureDetector(context, new GestureDetector.SimpleOnGestureListener() {
#Override
public boolean onSingleTapUp(MotionEvent e) {
return true;
}
#Override
public void onLongPress(MotionEvent e) {
View child = recyclerView.findChildViewUnder(e.getX(), e.getY());
if (child != null && clickListener != null) {
clickListener.onLongClick(child, recyclerView.getChildPosition(child));
}
}
});
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept){
}
}
You can refer to this question for more info.
I hope this helps!

Your code is missing one method:
onRequestDisallowInterceptTouchEvent(boolean disallowIntercept)
See in: https://developer.android.com/reference/android/support/v7/widget/RecyclerView.OnItemTouchListener.html
Inside your RecyclerTouchListener class, you need to add this:
#Override
public void onRequestDisallowInterceptTouchEvent(boolean disallowIntercept) {
//Any desired code
}

Reset TouchImageView zoom in ViewPager

I have activity for fullscreen browsing of images (something like gallery). In this activity I have ViewPager with offscreen limit 6. I use TouchImageView for my images.
The problem is, that when I first zoom image and swipe to another photo, I want to see not zoomed photo when I return to it. TouchImageView has resetZoom() function, but how can I get offscreen page view from the FragmentStatePageAdapter or from ViewPager?
Here's code of my activity:
public class ImageSlidesActivity extends FragmentActivity implements ViewPager.OnPageChangeListener {
final int PAGE_LIMIT = 6;
final int PAGE_MARGIN = 8;
long userID;
long deviceID;
String key;
String[] mAttachments;
ImageSlidesAdapter mAdaper;
ViewPager mPager;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_ACTION_BAR_OVERLAY);
setContentView(R.layout.activity_image_slides);
ActionBar actionBar = getActionBar();
actionBar.setDisplayHomeAsUpEnabled(true);
//actionBar.setBackgroundDrawable(new ColorDrawable(Color.parseColor("#33ffffff")));
Intent intent = getIntent();
mAttachments = intent.getStringArrayExtra("attachments");
int position = intent.getIntExtra("position", 0);
SharedPreferences pref = getApplicationContext().getSharedPreferences("authData", 0);
key = pref.getString("key", null);
userID = pref.getLong("userID", 0);
deviceID = pref.getLong("deviceID", 0);
setPageIndicator(position);
mAdaper = new ImageSlidesAdapter(getSupportFragmentManager(), mAttachments);
final View container = findViewById(R.id.container);
container.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
getActionBar().hide();
container.setSystemUiVisibility(View.SYSTEM_UI_FLAG_HIDE_NAVIGATION);
}
});
mPager = (ViewPager) findViewById(R.id.pager);
mPager.setAdapter(mAdaper);
mPager.setOnPageChangeListener(this);
mPager.setOffscreenPageLimit(PAGE_LIMIT);
mPager.setCurrentItem(position-1);
/* cause bug with the white strip
final float density = getResources().getDisplayMetrics().density;
mPager.setPageMargin((int) (PAGE_MARGIN * density + 0.5f));
mPager.setPageMarginDrawable(android.R.color.black);
*/
}
#Override
public boolean onCreateOptionsMenu(Menu menu) {
// Inflate the menu; this adds items to the action bar if it is present.
//getMenuInflater().inflate(R.menu.image_slides, menu);
return true;
}
#Override
public boolean onOptionsItemSelected(MenuItem item) {
// Handle action bar item clicks here. The action bar will
// automatically handle clicks on the Home/Up button, so long
// as you specify a parent activity in AndroidManifest.xml.
int id = item.getItemId();
if (id == android.R.id.home) {
onBackPressed();
}
if (id == R.id.action_settings) {
return true;
}
return super.onOptionsItemSelected(item);
}
#Override
public void onPageScrolled(int position, float positionOffset, int positionOffsetPixels) {
}
#Override
public void onPageSelected(int position) {
setPageIndicator(position+1);
}
#Override
public void onPageScrollStateChanged(int state) {
}
private void setPageIndicator(int page) {
setTitle(Integer.toString(page) + "/" + Integer.toString(mAttachments.length));
}
/**
* A fragment containing zoomable image.
*/
public static class ShowImageFragment extends Fragment {
String mAlias;
long mUserId;
long mDeviceId;
String mKey;
TouchImageView mImage;
static ShowImageFragment newInstance(String alias, long userId, long deviceId,
String key) {
ShowImageFragment f = new ShowImageFragment();
Bundle args = new Bundle();
args.putString("alias", alias);
args.putLong("userID", userId);
args.putLong("deviceID", deviceId);
args.putString("key", key);
f.setArguments(args);
return f;
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
Bundle bundle = getArguments();
mAlias = bundle.getString("alias");
mUserId = bundle.getLong("userID");
mDeviceId = bundle.getLong("deviceID");
mKey = bundle.getString("key");
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
View rootView = inflater.inflate(R.layout.fragment_image_slides, container, false);
mImage = (TouchImageView) rootView.findViewById(R.id.imageView);
final ProgressBar prBar = (ProgressBar) rootView.findViewById(R.id.progressBar);
new AsyncTask<Void, Void, Bitmap>() {
#Override
protected Bitmap doInBackground(Void... voids) {
try {
String[] links = API.getImageLinkByAlias(mAlias, mUserId,
mDeviceId, mKey);
return ImageLoader.getInstance().loadImageSync(links[1]);
} catch (Exception e) {
// TODO: handle exceptions
e.printStackTrace();
cancel(true);
return null;
}
}
#Override
protected void onPostExecute(Bitmap bitmap) {
prBar.setVisibility(View.GONE);
if (bitmap == null) { return; }
mImage.setImageBitmap(bitmap);
mImage.setVisibility(View.VISIBLE);
mImage.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
if (getActivity().getActionBar().isShowing()) {
getActivity().getActionBar().hide();
} else {
getActivity().getActionBar().show();
}
}
});
}
}.execute();
return rootView;
}
}
public class ImageSlidesAdapter extends FragmentStatePagerAdapter {
private String[] mAliases;
public ImageSlidesAdapter(android.support.v4.app.FragmentManager fm, String[] aliases) {
super(fm);
mAliases = aliases;
}
#Override
public android.support.v4.app.Fragment getItem(int position) {
return ShowImageFragment.newInstance(mAliases[position], userID, deviceID, key);
}
#Override
public int getCount() {
return mAliases.length;
}
}
}

I overrided onPageSelected method and I get views by calling getChildAt().
#Override
public void onPageSelected(int position) {
setPageIndicator(position+1);
if (position > 0) {
View view = mPager.getChildAt(position -1);
if (view != null) {
TouchImageView img = (TouchImageView) view.findViewById(R.id.image);
img.resetZoom();
}
}
if (position < mPager.getChildCount() - 1) {
View view = mPager.getChildAt(position + 1);
if (view != null) {
TouchImageView img = (TouchImageView) view.findViewById(R.id.image);
img.resetZoom();
}
}
}

It can also be achieved by setting a normal page transformer in the view pager
binding.viewPager.setPageTransformer { page, position ->
// Reset zoom on previous/next item
if (position == -1f || position == 1f) {
(page as PhotoView).apply {
scale = 1f
}
}
}