I have a problem with android studio. I use a fragment with a bottomNavigationView. It works fine if you click on the bottomNavigation. But if you simulate a click on the bottomNavigation it works for the first time and at the second time if you simulate the performclick again, it does not work.
I used also view.callOnClick(); and for the fragment add and remove fragment, but both do not function for my problem. I really appreciate it, if anyone can solve my problem.
Here is the Code:
`
public class ProfileFragment extends Fragment {
private Button send_order_button;
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstaceState) {
return inflater.inflate(R.layout.profile_fragment, container,false);
}
#Override
public void onStart() {
send_order_button = (Button) getView().findViewById(R.id.auftrag_abschicken);
}
send_order_button.setOnClickListener(new View.OnClickListener() {
ProfilActivity pa = new ProfilActivity();
pa.changeFragment();
getActivity().finishActivity(ProfilActivity.class.hashCode());
}
}`
`
public class ProfilActivity extends AppCompatActivity {
public ProfilActivity() {}
public static Fragment selectedFragment = null;
public static BottomNavigationView bottomNavigationView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_profil);
bottomNavigationView = (BottomNavigationView) findViewById(R.id.bottom_navigation);
bottomNavigationView.setOnNavigationItemSelectedListener(navListener);
View view = bottomNavigationView.findViewById(R.id.nav_chat);
view.performClick();
}
public void changeFragment() {
// bottomNavigationView.setSelectedItemId(R.id.nav_store);
View view = bottomNavigationView.findViewById(R.id.nav_store);
view.performClick();
}
public BottomNavigationView.OnNavigationItemSelectedListener navListener =
new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem menuItem) {
switch (menuItem.getItemId()) {
case R.id.nav_user :
selectedFragment = new ProfileFragment();
break;
case R.id.nav_chat :
selectedFragment = new MailFragment();
break;
case R.id.nav_store:
selectedFragment = new ShopFragment();
break;
}
try {
getSupportFragmentManager().beginTransaction().replace(R.id.fragment_container,
selectedFragment, "fragment").commitAllowingStateLoss();
} catch (Exception e) {
e.printStackTrace();
};
return true;
}
};
}`
It looks like you're trying to set the default selected item in the BottomNavigationView. Why not just use bottomNavigationView.setSelectedItemId(R.id.nav_store); ?
Related
this is the web view fragment
public class Home extends Fragment {
public Home() {
// Required empty public constructor
}
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_home, container, false);
WebView webView = (WebView)v.findViewById(R.id.webView1);
webView.getSettings().setJavaScriptEnabled(true);
webView.setWebViewClient(new WebViewClient());
webView.loadUrl("https://www.google.com");
return v;
}
}
I created web view inside other fragment not in main activity and when I press back button the app will close. so how to go back only inside web view (not through fragments)? please give me a solution.
here is my main activity
public class MainActivity extends AppCompatActivity implements BottomNavigationView.OnNavigationItemSelectedListener {
private static final String TAG = "MainActivity";
BottomNavigationView bottomNavigationView;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
bottomNavigationView = findViewById(R.id.bottom_navigation_view);
bottomNavigationView.setOnNavigationItemSelectedListener(this);
bottomNavigationView.setSelectedItemId(R.id.navigation_home);
}
Home homeFragment = new Home();
Live_And_Event_Schedule live_and_event_scheduleFragment = new Live_And_Event_Schedule();
Photos photosFragment = new Photos();
Videos videosFragment = new Videos();
About aboutFragment = new About();
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
switch (item.getItemId()){
case R.id.navigation_home:
getSupportFragmentManager().beginTransaction().setCustomAnimations(R.anim.fade_in, R.anim.fade_out).replace(R.id.center, homeFragment).commit();
return true;
case R.id.navigation_live_and_event_schedule:
getSupportFragmentManager().beginTransaction().setCustomAnimations(R.anim.fade_in, R.anim.fade_out).replace(R.id.center, live_and_event_scheduleFragment).commit();
return true;
case R.id.navigation_photos:
getSupportFragmentManager().beginTransaction().setCustomAnimations(R.anim.fade_in, R.anim.fade_out).replace(R.id.center, photosFragment).commit();
return true;
case R.id.navigation_videos:
getSupportFragmentManager().beginTransaction().setCustomAnimations(R.anim.fade_in, R.anim.fade_out).replace(R.id.center, videosFragment).commit();
return true;
case R.id.navigation_about:
getSupportFragmentManager().beginTransaction().setCustomAnimations(R.anim.fade_in, R.anim.fade_out).replace(R.id.center, aboutFragment).commit();
return true;
}
return false;
}
}
you can override onBackPressed in the Activity. save all fragmentTransaction before addToBackStack
#Override
public void onBackPressed() {
int count = getSupportFragmentManager().getBackStackEntryCount();
if (count == 0) {
super.onBackPressed();
//add extra code
} else {
getSupportFragmentManager().popBackStack();
}
}
I have already add an bottom navigation bar into my project with 3 fragments (Home_fragment, Wallet_fragment,Account_fragment). I have added login button in Account_fragment. Now i want that When ever i click on login button login_fragment(afterlogin_fragment) open with bottom navigation bar.
I have attaching a link to video showing my problem. link -- https://cloud.degoo.com/share/o41Axz4FYFHBx7
and here is codes ---
mainActivity ---
BottomNavigationView bottomNavigationView = findViewById(R.id.main_nav);
bottomNavigationView.setOnNavigationItemSelectedListener(navListener);
getSupportFragmentManager().beginTransaction().replace(R.id.main_frame_layout, new HomeFragment()).commit();
}
BottomNavigationView.OnNavigationItemSelectedListener navListener = new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem menuItem) {
Fragment selecrFlag = null;
switch (menuItem.getItemId())
{
case R.id.nav_home:
selecrFlag = new HomeFragment();
break;
case R.id.nav_wallet:
selecrFlag = new WalletFragment();
break;
case R.id.nav_Account:
selecrFlag = new AccountFragment();
break;
}
getSupportFragmentManager().beginTransaction().replace(R.id.main_frame_layout, selecrFlag).commit();
return true;
}
};
};
Account_fragment ---
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_account, container, false);
EmailID = v.findViewById(R.id.editTextEmail);
Passwd = v.findViewById(R.id.editPassword);
SignUpBt = v.findViewById(R.id.signbutton);
LoginBt = v.findViewById(R.id.loginbutton);
LoginBt.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startActivity(new Intent(AccountFragment.this.getContext(),AfterLogin.class));
}
});
afterlogin Fragment --
package com.thechamp.earnbyads;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
public class AfterLogin extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_after_login);
}
}
Look like you are confused. the way that you move to another Screen is not Fragment. It is Activity.
There are many ways to deal with this.
you can change your AfterLogin to Fragment.
or implement the AfterLogin Activity as what you implement in your Current Activity that has those 3 Fragments.
I have already add an bottom navigation bar into my project with 3 fragments (Home_fragment, Wallet_fragment, Account_fragment). I have added login button in Account_fragment. Now I want that Whenever I click on login button login_fragment (afterlogin activity) open with bottom navigation bar.
I have attaching a link to video showing my problem:
https://cloud.degoo.com/share/o41Axz4FYFHBx7
And here is code, starting with mainActivity:
BottomNavigationView bottomNavigationView = findViewById(R.id.main_nav);
bottomNavigationView.setOnNavigationItemSelectedListener(navListener);
getSupportFragmentManager().beginTransaction().replace(R.id.main_frame_layout, new HomeFragment()).commit();
}
BottomNavigationView.OnNavigationItemSelectedListener navListener = new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem menuItem) {
Fragment selecrFlag = null;
switch (menuItem.getItemId())
{
case R.id.nav_home:
selecrFlag = new HomeFragment();
break;
case R.id.nav_wallet:
selecrFlag = new WalletFragment();
break;
case R.id.nav_Account:
selecrFlag = new AccountFragment();
break;
}
getSupportFragmentManager().beginTransaction().replace(R.id.main_frame_layout, selecrFlag).commit();
return true;
}
};
};
Account_fragment:
#Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
// Inflate the layout for this fragment
View v = inflater.inflate(R.layout.fragment_account, container, false);
EmailID = v.findViewById(R.id.editTextEmail);
Passwd = v.findViewById(R.id.editPassword);
SignUpBt = v.findViewById(R.id.signbutton);
LoginBt = v.findViewById(R.id.loginbutton);
LoginBt.setOnClickListener(new View.OnClickListener() {
#Override
public void onClick(View view) {
startActivity(new Intent(AccountFragment.this.getContext(),AfterLogin.class));
}
});
afterlogin Fragment:
package com.thechamp.earnbyads;
import androidx.appcompat.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
public class AfterLogin extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_after_login);
}
}
I try create PreferenceFragment which must be opened via NavigationDrawer, but it does'nt work normal.
MainActivity.java
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentTransaction;
...
public class MainActivity extends AppCompatActivity {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
}
private void setupNavigationDrawerContent(NavigationView navigationView) {
navigationView.setNavigationItemSelectedListener(new NavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(MenuItem item) {
mDrawerLayout.closeDrawers();
setTitle(item.getTitle());
switch (item.getItemId()) {
...
case R.id.nav_one:
setFragment(3);
return true;
case R.id.nav_two:
setFragment(4);
return true;
case R.id.nav_settings:
getFragmentManager().beginTransaction()
.replace(R.id.content_main, new SettingFragment())
.commit();
return true;
}
return true;
}
});
}
public void setFragment(int position){
mFragmentTransaction = getSupportFragmentManager().beginTransaction();
Fragment fragment = null;
switch (position){
...
fragment = new OneFragment();
break;
case 4:
fragment = new TwoFragment();
break;
case 5:
break;
}
mFragmentTransaction.replace(R.id.content_main, fragment);
mFragmentTransaction.setTransition(FragmentTransaction.TRANSIT_FRAGMENT_FADE);
mFragmentTransaction.commit();
}
}
SettingFragment.java
public class SettingFragment extends PreferenceFragment {
public SettingFragment() {
}
#Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
addPreferencesFromResource(R.xml.settings);
}
}
}
And it looks like
enter image description here
The SettingFragment is inserted on top of the rest fragments and not destroyed after clicking other fragments.
This similar question enter link description here
not helped me.
Does anyone know the solution?
Solution: Use PreferenceFragmentCompat instead PreferenceFragment.
I want to develop a app with bottomnavigation ,In this I have 3 icons Home,Reminder,Settings .
I want to set a fragment as the default fragment of Home icon when the app is opened.
I have three fragments Home Fragment,Reminder Fragment and Settings Fragment.
MainActivity
public class MainActivity extends AppCompatActivity
implements Home.OnFragmentInteractionListener,
Reminders.OnFragmentInteractionListener,
Settings.OnFragmentInteractionListener {
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
BottomNavigationView navigation = (BottomNavigationView) findViewById(R.id.navigation);
navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
}
private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener
= new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
switch (item.getItemId()) {
case R.id.navigation_home:
switchToHomeFragment();
break;
case R.id.navigation_dashboard:
switchToRemindersFragment();
break;
case R.id.navigation_notifications:
switchToSettingsFragment();
break;
}
return false;
}
};
public void switchToHomeFragment() {
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.content_frame, new Home()).commit();
}
public void switchToRemindersFragment() {
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.content_frame, new Reminders()).commit();
}
public void switchToSettingsFragment() {
FragmentManager manager = getSupportFragmentManager();
manager.beginTransaction().replace(R.id.content_frame, new Settings()).commit();
}
#Override
public void onFragmentInteraction(Uri uri) {
}
}
This is my code and it works perfectly, serve yourself.
public class MyActivity extends AppCompatActivity {
private static final String SELECTED_ITEM = "arg_selected_item";
private BottomNavigationView mBottomNav;
private int mSelectedItem;
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_second);
mBottomNav = findViewById(R.id.navigation);
mBottomNav.setOnNavigationItemSelectedListener(new BottomNavigationView.OnNavigationItemSelectedListener() {
#Override
public boolean onNavigationItemSelected(#NonNull MenuItem item) {
selectFragment(item);
return true;
}
});
MenuItem selectedItem;
if (savedInstanceState != null) {
mSelectedItem = savedInstanceState.getInt(SELECTED_ITEM, 0);
selectedItem = mBottomNav.getMenu().findItem(mSelectedItem);
} else {
selectedItem = mBottomNav.getMenu().getItem(0);
}
selectFragment(selectedItem);
}
#Override
protected void onSaveInstanceState(Bundle outState) {
outState.putInt(SELECTED_ITEM, mSelectedItem);
super.onSaveInstanceState(outState);
}
#Override
public void onBackPressed() {
MenuItem homeItem = mBottomNav.getMenu().getItem(0);
if (mSelectedItem != homeItem.getItemId()) {
// select home item
selectFragment(homeItem);
} else {
super.onBackPressed();
}
}
private void selectFragment(MenuItem item) {
Fragment frag = null;
// init corresponding fragment
switch (item.getItemId()) {
case R.id.menu_home:
getSupportFragmentManager().beginTransaction().replace(R.id.container, new HomeFragment()).commit();
break;
case R.id.menu_suggestion:
getSupportFragmentManager().beginTransaction().replace(R.id.container, new SuggestionFragment()).commit();
break;
case R.id.menu_notification:
getSupportFragmentManager().beginTransaction().replace(R.id.container, new NotificationFragment()).commit();
break;
case R.id.menu_profile:
getSupportFragmentManager().beginTransaction().replace(R.id.container, new ProfileFragment()).commit();
break;
}
// update selected item
mSelectedItem = item.getItemId();
}
}
Just call this method switchToHomeFragment() inside onCreate
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
BottomNavigationView navigation = (BottomNavigationView) findViewById(R.id.navigation);
navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
switchToHomeFragment()
// ^^^^^^^^^^^ call this to display home fragment when activity is created
}
or you can use setSelectedItemId ,inside onCreate, at the end
#Override
protected void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
BottomNavigationView navigation = (BottomNavigationView) findViewById(R.id.navigation);
navigation.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);
// recommended method, will highlight the icon as well
navigation.setSelectedItemId(R.id.navigation_home);
}