Android - Back button in the title bar

Question

In many apps  Calendar  Drive  Play Store  when you tap a button and enter a new activity  the icon in the title bar turns into a back button  but for the app I am making  it doesn t do that  How do I make that icon take you back to the previous screen

User · Answer

This is working for me   Suppose there are two activity  Activityone Activitytwo   Inside Activitytwo use this code   Override protected void onCreate Bundle savedInstanceState        getSupportActionBar   setDisplayHomeAsUpEnabled true       On Activityone    when you need to go second activity startActivity new Intent Activityone this  Activitytwo class      This should be included in second activity inside manifest file   lt activity android name   Activitytwo          android parentActivityName   Activityone  gt  lt  activity gt    And The result would be like this

User · Answer

You need to add the below mentioned code in the manifest file  Search for the activity in which you want to add the back arrow functionality  If you find the one then fine or create the activity    lt activity android name   SearchActivity  gt    lt  activity gt    Then add the following three lines of code in between    lt meta-data android name  android support PARENT ACTIVITY  android value  com example raqib instadate MainActivity    gt    And don t forget to add this piece of code in onCreate    method of your particular activity in which you need back arrow           Toolbar toolbar    Toolbar  findViewById R id searchToolbar       setSupportActionBar toolbar       try          getSupportActionBar   setDisplayHomeAsUpEnabled true        catch NullPointerException e          Log e  SearchActivity Toolbar    You have got a NULL POINTER EXCEPTION            This is how i solved the problem  Thanks

User · Answer

The simplest way and best practice as google explains in here    1 Add a parent for your childActivity in the AndroidManifest xml     lt activity          android name   ChildActivity          android parentActivityName   ParentActivity   gt   lt  activity gt    2 Activate the back button in your childActivity    myActionOrActionSupportBar setDisplayHomeAsUpEnabled true     Worked for me  I hope it works for you too

User · Answer

Toolbar toolbar findViewById R id toolbar   getSupportActionBar   setDisplayHomeAsUpEnabled true    if  getSupportActionBar    null       getSupportActionBar   setDisplayHomeAsUpEnabled true       getSupportActionBar   setDisplayShowHomeEnabled true       Override public boolean onOptionsItemSelected MenuItem item    if item getItemId    android R id home      finish    return super onOptionsItemSelected item

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I needed to mix some answers to get the right answer for me because my app has 3 activities that can go and back at any time  Activity1   Activity2   Activity3  When I was doing something on my activity3  the back button was backing correctly to Activity2  However  from the Activity2  using finish    it was backing to Activity3 and not Activity1  And I m extending AppCompatActivity  So  my solution was   public class Activity2 extends AppCompatActivity            Override         protected void onCreate Bundle savedInstanceState                                 getSupportActionBar   setHomeButtonEnabled true                     on AndroidManifest xml    lt activity android name   activities Activity2             android parentActivityName  com example appname activities Activity1  gt               lt meta-data                 android name  android support PARENT ACTIVITY                  android value  com example appname activities Activity1    gt           lt  activity gt    and finally  the action button on my menu  actionbar    public boolean onOptionsItemSelected MenuItem item            switch  item getItemId                                  case android R id home                  NavUtils navigateUpFromSameTask this                   return true                      return super onOptionsItemSelected item            Using NavUtils navigateUpFromSameTask this   worked for me  instead of finish

User · Answer

All you need to do in 2020   considering you want to return to the MainActivity  protected void onCreate Bundle savedInstanceState               getSupportActionBar   setDisplayHomeAsUpEnabled true      public boolean onOptionsItemSelected MenuItem item        Intent myIntent   new Intent getApplicationContext    MainActivity class       startActivityForResult myIntent  0       return true

User · Answer

If your activity extends AppCompatActivity you need to override the onSupportNavigateUp   method like so   public class SecondActivity extends AppCompatActivity        Override    protected void onCreate Bundle savedInstanceState           super onCreate savedInstanceState          setContentView R layout activity second          Toolbar toolbar    Toolbar  findViewById R id toolbar          setSupportActionBar toolbar          getSupportActionBar   setHomeButtonEnabled true          getSupportActionBar   setDisplayHomeAsUpEnabled true                        Override    public void onBackPressed            super onBackPressed           this finish              Override    public boolean onSupportNavigateUp            onBackPressed           return true           Handle your logic in your onBackPressed   method and just call that method in onSupportNavigateUp   so the back button on the phone and the arrow on the toolbar do the same thing

User · Answer

I have finally managed to properly add back button to actionbar toolbar   Override public void onCreate Bundle savedInstanceState                getSupportActionBar   setDisplayHomeAsUpEnabled true         Override public boolean onOptionsItemSelected MenuItem item        switch  item getItemId              case android R id home              finish                return true             return super onOptionsItemSelected item      public boolean onCreateOptionsMenu Menu menu        return true

User · Answer

This is working for me getSupportActionBar   setDisplayHomeAsUpEnabled false   enter image description here

User · Answer

After a quality time I have found  theme option is the main problem in my code And following is the proper way to show the toolbar for me  In AndroidManifest file first you have to change your theme style   Theme AppCompat Light DarkActionBar to  Theme AppCompat Light NoActionBar   then at your activity xml you need to call your own Toolbar like    lt androidx appcompat widget Toolbar         android layout width  match parent          android layout height   attr actionBarSize          android background   color colorPrimary          android id    id toolbar          android theme   style ThemeOverlay AppCompat Dark ActionBar          android elevation  4dp   gt    And then this toolbar should be called in your Java file by   Toolbar toolbar   findViewById R id toolbar   setSupportActionBar toolbar     And for toolbar showing U should check the null to avoid NullPointerException  if getSupportActionBar      null       getSupportActionBar   setDisplayHomeAsUpEnabled true       For Home activity back add this    Override public boolean onOptionsItemSelected MenuItem item            if  item getItemId    android R id home                finish                return true                     return super onOptionsItemSelected item           OR for your desired activity back  public boolean onOptionsItemSelected MenuItem item       Intent myIntent   new Intent getApplicationContext    YourActivity class       startActivityForResult myIntent  0       return true

User · Answer

1 - Add the activity to AndroidManifest xml and make sure to provide the meta-data    lt activity     android name  com example myfirstapp DisplayMessageActivity      android label   string title activity display message      android parentActivityName  com example myfirstapp MainActivity   gt       lt  -- Parent activity meta-data to support 4 0 and lower -- gt       lt meta-data         android name  android support PARENT ACTIVITY          android value  com example myfirstapp MainActivity    gt   lt  activity gt    2 - Add the following code to the onCreate method of the activity    Override public void onCreate Bundle savedInstanceState                getActionBar   setDisplayHomeAsUpEnabled true        3 - Override the onOptionsItemSelected and use NavUtils navigateUpFromSameTask   static method to navigate throw the stack    Override public boolean onOptionsItemSelected MenuItem item        switch  item getItemId             Respond to the action bar s Up Home button     case android R id home          NavUtils navigateUpFromSameTask this           return true            return super onOptionsItemSelected item          However  using navigateUpFromSameTask   is suitable only when your app   is the owner of the current task  that is  the user began this task   from your app   If that s not true and your activity was started in a   task that belongs to a different app  then navigating Up should create   a new task that belongs to your app  which requires that you create a   new back stack

User · Answer

Just sharing something that helped me and may be useful for others  Although most of the answers here are correct  by using the getActionBar   setDisplayHomeAsUpEnabled true    this wasn t working for me  The issue I had was that I was trying to create a second Activity manually  but there are more details involved  What really solved my problem was following Android Developers tutorial  https   developer android com training basics firstapp starting-activity  for creating a second Activity using Android Studio own tools   Create the second activity 1  In the Project window  right-click the app folder and select New  gt  Activity  gt  Empty Activity  2  In the Configure Activity window  enter  DisplayMessageActivity  for Activity Name and click Finish  leave all other properties set to the defaults   Android Studio automatically does three things  - Creates the DisplayMessageActivity file  - Creates the corresponding activity display message xml layout file  - Adds the required  lt activity gt  element in AndroidManifest xml

User · Answer

It can also be done without code by specifying a parent activity in app manifest  If you want a back button in Activity B which will goto Activity A  just add Activity A as the parent of Activity B in the manifest

User · Answer

If you are using the new support library for 5 1 in android studio  you can instead use this on your AppCompatActivity   ActionBar actionBar   getSupportActionBar     actionBar setHomeButtonEnabled true    actionBar setDisplayHomeAsUpEnabled true    actionBar setHomeAsUpIndicator R mipmap ic arrow back white 24dp    actionBar setDisplayShowHomeEnabled true     cheers

User · Answer

first of all in onCreate Function add the following line  getSupportActionBar   setDisplayHomeAsUpEnabled true     and then add the following function in the code    Override     public boolean onOptionsItemSelected MenuItem item            switch  item getItemId                  case android R id home                  finish                    return true                     return super onOptionsItemSelected item

User · Answer

protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout YourxmlFileName           getSupportActionBar   setDisplayHomeAsUpEnabled true            public boolean onOptionsItemSelected MenuItem item            int id   item getItemId             if  id  android R id home                finish                return true                    return false

User · Answer

The other answers don t mention that you can also set this in the XML of your Toolbar widget   app navigationIcon   attr homeAsUpIndicator   For example    lt android support v7 widget Toolbar     android id    id toolbar      android layout width  match parent      android layout height   attr actionBarSize      android background   attr colorPrimary      app navigationIcon   attr homeAsUpIndicator      app popupTheme   style AppTheme PopupOverlay      app title   string title activity acoustic progress    gt

User · Answer

use this code     Override  public void onCreate Bundle savedInstanceState               getActionBar   setDisplayHomeAsUpEnabled true         after that write this code in onOptionsItemSelected method    int id   item getItemId          if  id  android R id home            finish

User · Answer

I saw so much complexes answer  so this is my code  Working here  You can achieve this in two ways   1  Stardard android compatiblity  import androidx appcompat app AppCompatActivity  import androidx appcompat widget Toolbar  import androidx core app NavUtils   import android view MenuItem  import android view View   public class EditDiscoveryActivity extends AppCompatActivity         Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity edit discovery           Toolbar toolbar   findViewById R id toolbar           setSupportActionBar toolbar              toolbar setNavigationIcon R drawable ic arrow white 24dp           toolbar setNavigationOnClickListener new View OnClickListener                  Override             public void onClick View view                    finish                                        getSupportActionBar   setDisplayHomeAsUpEnabled true           getSupportActionBar   setDisplayShowHomeEnabled true               Override     public boolean onSupportNavigateUp             onBackPressed            return true             2  Use a custom icon  If you want to use code in comments you just have to add this file in drawable  called ic arrow white 24dp xml   lt vector xmlns android  http   schemas android com apk res android      android width  24dp      android height  24dp      android viewportWidth  24 0      android viewportHeight  24 0  gt       lt path         android fillColor   ffffff          android pathData  M20 11H7 83l5 59 -5 59L12 4l-8 8 8 8 1 41 -1 41L7 83 13H20v-2z   gt       lt  vector gt    With this code   toolbar setNavigationIcon R drawable ic arrow white 24dp               toolbar setNavigationOnClickListener new View OnClickListener                      Override                 public void onClick View view                        finish                                        Hope it will helps some people here

User · Answer

For kotlin       override fun onOptionsItemSelected item  MenuItem   Boolean           onBackPressed            return true

User · Answer

If your activity does extend Activity  public class YourActivity extends Activity         Override     protected void onCreate Bundle savedInstanceState            super onCreate savedInstanceState           setContentView R layout activity xxx            getActionBar   setHomeButtonEnabled true                                       If your action extends AppCompatActivity  public class YourActivity extends AppCompatActivity             Override         protected void onCreate Bundle savedInstanceState                super onCreate savedInstanceState               setContentView R layout activity xxx                getSupportActionBar   setHomeButtonEnabled true                                                       Nothing more to do  See Add up action   OPTIONAL  To explicitly define parent activity modify your Manifest xml like this    lt application      gt               lt  -- The main home activity  it has no parent activity  -- gt       lt activity         android name  com example myfirstapp MainActivity      gt                   lt  activity gt       lt  -- A child of the main activity -- gt       lt activity         android name  com example myfirstapp YourActivity           android label   string title activity display message          android parentActivityName  com example myfirstapp MainActivity   gt           lt  -- Parent activity meta-data to support 4 0 and lower -- gt           lt meta-data             android name  android support PARENT ACTIVITY              android value  com example myfirstapp MainActivity    gt       lt  activity gt   lt  application gt    See Specify the Parent Activity

User · Answer

There are two simple steps to create a back button in the title bar   First  make the application icon clickable using the following code in the activity whose title bar you want to have a back button in   ActionBar actionBar   getActionBar    actionBar setDisplayHomeAsUpEnabled true     After you have added the above code  you will see a back arrow appear to the left of the application icon       Second  after you have done the above  you still have to create code that will take advantage of the click event   To do so  be aware that  when you actually click on the application icon  an onOptionsItemSelected method is called   So to go back to the previous activity  add that method to your activity and put Intent code in it that will return you to the previous activity  For example  let s say the activity you are trying to go back to is called MyActivity  To go back to it  write the method as follows   public boolean onOptionsItemSelected MenuItem item       Intent myIntent   new Intent getApplicationContext    MyActivity class       startActivityForResult myIntent  0       return true      That s it      In the Android developers API  it recommends messing around with the manifest and adding stuff like android parentActivityName   But that doesn t seem to work for me  The above is simpler and more reliable     lt meta-data       android name  android support PARENT ACTIVITY        android value   MainActivity    gt    And in your Activity  getSupportActionBar   setDisplayHomeAsUpEnabled true

User · Answer

If you are using an ActionBar you re going to want to read up on this documentation  http   developer android com reference android app ActionBar html setDisplayHomeAsUpEnabled boolean   Then you have to overwrite the method onOptionsItemSelected MenuItem  and look for the android R id home event to come in  Then you know the user has clicked on that back button on the actionbar

User · Answer

First you need to write this codes       Override     protected void onCreate Bundle savedInstanceState            getSupportActionBar   setDisplayHomeAsUpEnabled true           Then add this line in manifest    lt activity android name   MainActivity              android parentActivityName   PreviousActivity  gt  lt  activity gt       I think it will work

User · Answer

Light-weighted version without using ActionBarActivity that still has the same bahaviors here   public class ToolbarConfigurer implements View OnClickListener       private Activity activity       public ToolbarConfigurer Activity activity  Toolbar toolbar  boolean displayHomeAsUpEnabled            toolbar setTitle  this activity   activity  getTitle             if   displayHomeAsUpEnabled  return          toolbar setNavigationIcon R drawable abc ic ab back mtrl am alpha           toolbar setNavigationOnClickListener this               Override     public void onClick View v            NavUtils navigateUpFromSameTask activity             Usage  Put new ToolbarConfigurer this   Toolbar  findViewById R id my awesome toolbar   true   in onCreate

User · Answer

You can also simply put onBackPressed   in your onClick listener  This causes your button to act like the default  back up  buttons in android apps

[android] Android - Back button in the title bar

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