Maintaining BackStack In Bottom Navaigation
0
I am using bottomNavigation in my android app. I have 5 fragments A, B, C, D, E. The fragment B contains another fragment says B1. When I backpress on fragment B1, it closes the app. How can I move to fragment B when backpressed from fragment B1.
Here is my code
bottomNavigationView.setOnNavigationItemSelectedListener(
item -> {
Fragment fragment = null;
switch (item.getItemId()) {
case R.id.A:
fragment = new A();
break;
case R.id.B:
fragment = new B();
break;
case R.id.C:
fragment = new C();
break;
case R.id.D:
fragment = new D();
break;
case R.id.E:
fragment = new E();
break;
}
return loadFragment(fragment);
});
private boolean loadFragment(Fragment fragment) {
//switching fragment
if (fragment != null) {
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.main_fragment, fragment)
.commit();
return true;
}
return false;
}
android 
android-fragments asked Nov 18 '18 at 19:55
Pub InstaPub Insta
13
add a comment |
0
I am using bottomNavigation in my android app. I have 5 fragments A, B, C, D, E. The fragment B contains another fragment says B1. When I backpress on fragment B1, it closes the app. How can I move to fragment B when backpressed from fragment B1.
Here is my code
bottomNavigationView.setOnNavigationItemSelectedListener(
item -> {
Fragment fragment = null;
switch (item.getItemId()) {
case R.id.A:
fragment = new A();
break;
case R.id.B:
fragment = new B();
break;
case R.id.C:
fragment = new C();
break;
case R.id.D:
fragment = new D();
break;
case R.id.E:
fragment = new E();
break;
}
return loadFragment(fragment);
});
private boolean loadFragment(Fragment fragment) {
//switching fragment
if (fragment != null) {
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.main_fragment, fragment)
.commit();
return true;
}
return false;
}
asked Nov 18 '18 at 19:55
Pub InstaPub Insta
13
add a comment |
0
0
0
I am using bottomNavigation in my android app. I have 5 fragments A, B, C, D, E. The fragment B contains another fragment says B1. When I backpress on fragment B1, it closes the app. How can I move to fragment B when backpressed from fragment B1.
Here is my code
bottomNavigationView.setOnNavigationItemSelectedListener(
item -> {
Fragment fragment = null;
switch (item.getItemId()) {
case R.id.A:
fragment = new A();
break;
case R.id.B:
fragment = new B();
break;
case R.id.C:
fragment = new C();
break;
case R.id.D:
fragment = new D();
break;
case R.id.E:
fragment = new E();
break;
}
return loadFragment(fragment);
});
private boolean loadFragment(Fragment fragment) {
//switching fragment
if (fragment != null) {
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.main_fragment, fragment)
.commit();
return true;
}
return false;
}
asked Nov 18 '18 at 19:55
Pub InstaPub Insta
13
I am using bottomNavigation in my android app. I have 5 fragments A, B, C, D, E. The fragment B contains another fragment says B1. When I backpress on fragment B1, it closes the app. How can I move to fragment B when backpressed from fragment B1.
Here is my code
bottomNavigationView.setOnNavigationItemSelectedListener(
item -> {
Fragment fragment = null;
switch (item.getItemId()) {
case R.id.A:
fragment = new A();
break;
case R.id.B:
fragment = new B();
break;
case R.id.C:
fragment = new C();
break;
case R.id.D:
fragment = new D();
break;
case R.id.E:
fragment = new E();
break;
}
return loadFragment(fragment);
});
private boolean loadFragment(Fragment fragment) {
//switching fragment
if (fragment != null) {
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.main_fragment, fragment)
.commit();
return true;
}
return false;
}
asked Nov 18 '18 at 19:55
Pub InstaPub Insta
13
asked Nov 18 '18 at 19:55
Pub InstaPub Insta
13
asked Nov 18 '18 at 19:55
Pub InstaPub Insta
13
asked Nov 18 '18 at 19:55
Pub InstaPub Insta
13
asked Nov 18 '18 at 19:55
Pub InstaPub Insta
13
13
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
2
While opening B1 Fragment use this
private boolean loadFragmentB1(Fragment fragment) {
//switching fragment
if (fragment != null) {
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.main_fragment, fragment)
.commit();
return true;
While opening other fragment except B1 , use this
private boolean loadFragment(Fragment fragment) {
//switching fragment
if (fragment != null) {
getSupportFragmentManager()
.beginTransaction()
.addToBackStack(null)
.replace(R.id.main_fragment, fragment)
.commit();
return true;
}
return false;
}
And on activity override onBackPressed like this
@Override
public void onBackPressed(){
if (getSupportFragmentManager().getBackStackEntryCount() != 0) {
getSupportFragmentManager().popBackStack();
} else {
super.onBackPressed();
finish();
}
}
answered Nov 19 '18 at 3:50
Rabindra KhadkaRabindra Khadka
109214
It's working fine but on backpressed the selected item in bottomnavigation is not changing
– Pub Insta
Nov 19 '18 at 15:35
Please check the updated answer @PubInsta
– Rabindra Khadka
Nov 19 '18 at 16:37
When I back press on B1 it's going to home fragment, but the selected item in botttom navigation is still pointing to B
– Pub Insta
Nov 19 '18 at 16:46
Please check the updated answer @PubInsta
– Rabindra Khadka
Nov 19 '18 at 16:52
I have checked the updated answer it's not working
– Pub Insta
Nov 19 '18 at 16:57
|
show 5 more comments
Your Answer
StackExchange.ifUsing("editor", function () {
StackExchange.using("externalEditor", function () {
StackExchange.using("snippets", function () {
StackExchange.snippets.init();
});
});
}, "code-snippets");
StackExchange.ready(function() {
var channelOptions = {
tags: "".split(" "),
id: "1"
};
initTagRenderer("".split(" "), "".split(" "), channelOptions);
StackExchange.using("externalEditor", function() {
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled) {
StackExchange.using("snippets", function() {
createEditor();
});
}
else {
createEditor();
}
});
function createEditor() {
StackExchange.prepareEditor({
heartbeatType: 'answer',
autoActivateHeartbeat: false,
convertImagesToLinks: true,
noModals: true,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
imageUploader: {
brandingHtml: "Powered by u003ca class="icon-imgur-white" href="https://imgur.com/"u003eu003c/au003e",
contentPolicyHtml: "User contributions licensed under u003ca href="https://creativecommons.org/licenses/by-sa/3.0/"u003ecc by-sa 3.0 with attribution requiredu003c/au003e u003ca href="https://stackoverflow.com/legal/content-policy"u003e(content policy)u003c/au003e",
allowUrls: true
},
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
});
}
});
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53364859%2fmaintaining-backstack-in-bottom-navaigation%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
2
While opening B1 Fragment use this
private boolean loadFragmentB1(Fragment fragment) {
//switching fragment
if (fragment != null) {
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.main_fragment, fragment)
.commit();
return true;
While opening other fragment except B1 , use this
private boolean loadFragment(Fragment fragment) {
//switching fragment
if (fragment != null) {
getSupportFragmentManager()
.beginTransaction()
.addToBackStack(null)
.replace(R.id.main_fragment, fragment)
.commit();
return true;
}
return false;
}
And on activity override onBackPressed like this
@Override
public void onBackPressed(){
if (getSupportFragmentManager().getBackStackEntryCount() != 0) {
getSupportFragmentManager().popBackStack();
} else {
super.onBackPressed();
finish();
}
}
answered Nov 19 '18 at 3:50
Rabindra KhadkaRabindra Khadka
109214
It's working fine but on backpressed the selected item in bottomnavigation is not changing
– Pub Insta
Nov 19 '18 at 15:35
Please check the updated answer @PubInsta
– Rabindra Khadka
Nov 19 '18 at 16:37
When I back press on B1 it's going to home fragment, but the selected item in botttom navigation is still pointing to B
– Pub Insta
Nov 19 '18 at 16:46
Please check the updated answer @PubInsta
– Rabindra Khadka
Nov 19 '18 at 16:52
I have checked the updated answer it's not working
– Pub Insta
Nov 19 '18 at 16:57
|
show 5 more comments
2
While opening B1 Fragment use this
private boolean loadFragmentB1(Fragment fragment) {
//switching fragment
if (fragment != null) {
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.main_fragment, fragment)
.commit();
return true;
While opening other fragment except B1 , use this
private boolean loadFragment(Fragment fragment) {
//switching fragment
if (fragment != null) {
getSupportFragmentManager()
.beginTransaction()
.addToBackStack(null)
.replace(R.id.main_fragment, fragment)
.commit();
return true;
}
return false;
}
And on activity override onBackPressed like this
@Override
public void onBackPressed(){
if (getSupportFragmentManager().getBackStackEntryCount() != 0) {
getSupportFragmentManager().popBackStack();
} else {
super.onBackPressed();
finish();
}
}
answered Nov 19 '18 at 3:50
Rabindra KhadkaRabindra Khadka
109214
It's working fine but on backpressed the selected item in bottomnavigation is not changing
– Pub Insta
Nov 19 '18 at 15:35
Please check the updated answer @PubInsta
– Rabindra Khadka
Nov 19 '18 at 16:37
When I back press on B1 it's going to home fragment, but the selected item in botttom navigation is still pointing to B
– Pub Insta
Nov 19 '18 at 16:46
Please check the updated answer @PubInsta
– Rabindra Khadka
Nov 19 '18 at 16:52
I have checked the updated answer it's not working
– Pub Insta
Nov 19 '18 at 16:57
|
show 5 more comments
2
2
2
While opening B1 Fragment use this
private boolean loadFragmentB1(Fragment fragment) {
//switching fragment
if (fragment != null) {
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.main_fragment, fragment)
.commit();
return true;
While opening other fragment except B1 , use this
private boolean loadFragment(Fragment fragment) {
//switching fragment
if (fragment != null) {
getSupportFragmentManager()
.beginTransaction()
.addToBackStack(null)
.replace(R.id.main_fragment, fragment)
.commit();
return true;
}
return false;
}
And on activity override onBackPressed like this
@Override
public void onBackPressed(){
if (getSupportFragmentManager().getBackStackEntryCount() != 0) {
getSupportFragmentManager().popBackStack();
} else {
super.onBackPressed();
finish();
}
}
answered Nov 19 '18 at 3:50
Rabindra KhadkaRabindra Khadka
109214
While opening B1 Fragment use this
private boolean loadFragmentB1(Fragment fragment) {
//switching fragment
if (fragment != null) {
getSupportFragmentManager()
.beginTransaction()
.replace(R.id.main_fragment, fragment)
.commit();
return true;
While opening other fragment except B1 , use this
private boolean loadFragment(Fragment fragment) {
//switching fragment
if (fragment != null) {
getSupportFragmentManager()
.beginTransaction()
.addToBackStack(null)
.replace(R.id.main_fragment, fragment)
.commit();
return true;
}
return false;
}
And on activity override onBackPressed like this
@Override
public void onBackPressed(){
if (getSupportFragmentManager().getBackStackEntryCount() != 0) {
getSupportFragmentManager().popBackStack();
} else {
super.onBackPressed();
finish();
}
}
answered Nov 19 '18 at 3:50
Rabindra KhadkaRabindra Khadka
109214
edited Nov 20 '18 at 16:42
answered Nov 19 '18 at 3:50
Rabindra KhadkaRabindra Khadka
109214
answered Nov 19 '18 at 3:50
Rabindra KhadkaRabindra Khadka
109214
answered Nov 19 '18 at 3:50
Rabindra KhadkaRabindra Khadka
109214
109214
It's working fine but on backpressed the selected item in bottomnavigation is not changing
– Pub Insta
Nov 19 '18 at 15:35
Please check the updated answer @PubInsta
– Rabindra Khadka
Nov 19 '18 at 16:37
When I back press on B1 it's going to home fragment, but the selected item in botttom navigation is still pointing to B
– Pub Insta
Nov 19 '18 at 16:46
Please check the updated answer @PubInsta
– Rabindra Khadka
Nov 19 '18 at 16:52
I have checked the updated answer it's not working
– Pub Insta
Nov 19 '18 at 16:57
|
show 5 more comments
It's working fine but on backpressed the selected item in bottomnavigation is not changing
– Pub Insta
Nov 19 '18 at 15:35
Please check the updated answer @PubInsta
– Rabindra Khadka
Nov 19 '18 at 16:37
When I back press on B1 it's going to home fragment, but the selected item in botttom navigation is still pointing to B
– Pub Insta
Nov 19 '18 at 16:46
Please check the updated answer @PubInsta
– Rabindra Khadka
Nov 19 '18 at 16:52
I have checked the updated answer it's not working
– Pub Insta
Nov 19 '18 at 16:57
It's working fine but on backpressed the selected item in bottomnavigation is not changing
– Pub Insta
Nov 19 '18 at 15:35
It's working fine but on backpressed the selected item in bottomnavigation is not changing
– Pub Insta
Nov 19 '18 at 15:35
Please check the updated answer @PubInsta
– Rabindra Khadka
Nov 19 '18 at 16:37
Please check the updated answer @PubInsta
– Rabindra Khadka
Nov 19 '18 at 16:37
When I back press on B1 it's going to home fragment, but the selected item in botttom navigation is still pointing to B
– Pub Insta
Nov 19 '18 at 16:46
When I back press on B1 it's going to home fragment, but the selected item in botttom navigation is still pointing to B
– Pub Insta
Nov 19 '18 at 16:46
Please check the updated answer @PubInsta
– Rabindra Khadka
Nov 19 '18 at 16:52
Please check the updated answer @PubInsta
– Rabindra Khadka
Nov 19 '18 at 16:52
I have checked the updated answer it's not working
– Pub Insta
Nov 19 '18 at 16:57
I have checked the updated answer it's not working
– Pub Insta
Nov 19 '18 at 16:57
|
show 5 more comments
draft saved
draft discarded
Thanks for contributing an answer to Stack Overflow!
- Please be sure to answer the question. Provide details and share your research!
But avoid …
- Asking for help, clarification, or responding to other answers.
- Making statements based on opinion; back them up with references or personal experience.
To learn more, see our tips on writing great answers.
draft saved
draft discarded
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function () {
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f53364859%2fmaintaining-backstack-in-bottom-navaigation%23new-answer', 'question_page');
}
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function () {
StackExchange.helpers.onClickDraftSave('#login-link');
});
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
