{"id":24649,"date":"2022-12-04T17:19:48","date_gmt":"2022-12-04T11:49:48","guid":{"rendered":"https:\/\/jassweb.com\/solved\/solved-how-to-add-backbutton-functionality-to-app\/"},"modified":"2022-12-04T17:19:48","modified_gmt":"2022-12-04T11:49:48","slug":"solved-how-to-add-backbutton-functionality-to-app","status":"publish","type":"post","link":"https:\/\/jassweb.com\/solved\/solved-how-to-add-backbutton-functionality-to-app\/","title":{"rendered":"[Solved] How to add backbutton functionality to app"},"content":{"rendered":"<p> [ad_1]<br \/>\n<\/p>\n<div id=\"answer-55806104\" class=\"answer js-answer accepted-answer js-accepted-answer\" data-answerid=\"55806104\" data-parentid=\"55805754\" data-score=\"1\" data-position-on-page=\"1\" data-highest-scored=\"1\" data-question-has-accepted-highest-score=\"1\" itemprop=\"acceptedAnswer\" itemscope itemtype=\"https:\/\/schema.org\/Answer\">\n<div class=\"post-layout\">\n<div class=\"votecell post-layout--left\"><\/div>\n<div class=\"answercell post-layout--right\">\n<div class=\"s-prose js-post-body\" itemprop=\"text\">\n<p>What you looking is call <a rel=\"nofollow noopener\" target=\"_blank\" href=\"https:\/\/developer.android.com\/reference\/android\/support\/design\/widget\/BottomNavigationView\">BottomNavigationView<\/a>.<\/p>\n<p>You should place the id in <code>onNavigationItemSelected<\/code>.<\/p>\n<p><strong>MainActivty<\/strong><\/p>\n<pre><code>public class MainActivity extends AppCompatActivity {\n    private TextView mTextMessage;\n\n    private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener\n            = new BottomNavigationView.OnNavigationItemSelectedListener() {\n\n        @Override\n        public boolean onNavigationItemSelected(@NonNull MenuItem item) {\n            switch (item.getItemId()) {\n                case R.id.navigation_home:\n                    mTextMessage.setText(R.string.title_home);\n                    return true;\n                case R.id.back:\n                    finish();\n                    return true;\n            }\n            return false;\n        }\n    };\n\n    @Override\n    protected void onCreate(Bundle savedInstanceState) {\n        super.onCreate(savedInstanceState);\n        setContentView(R.layout.activity_main);\n        BottomNavigationView navView = findViewById(R.id.nav_view);\n        mTextMessage = findViewById(R.id.message);\n        navView.setOnNavigationItemSelectedListener(mOnNavigationItemSelectedListener);\n    }  \n}\n<\/code><\/pre>\n<p><strong>activity_main<\/strong><\/p>\n<pre><code>&lt;?xml version=\"1.0\" encoding=\"utf-8\"?&gt;\n&lt;android.support.constraint.ConstraintLayout xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"\n    xmlns:app=\"http:\/\/schemas.android.com\/apk\/res-auto\"\n    xmlns:tools=\"http:\/\/schemas.android.com\/tools\"\n    android:id=\"@+id\/container\"\n    android:layout_width=\"match_parent\"\n    android:layout_height=\"match_parent\"\n    tools:context=\".MainActivity\"&gt;\n\n    &lt;TextView\n        android:id=\"@+id\/message\"\n        android:layout_width=\"wrap_content\"\n        android:layout_height=\"wrap_content\"\n        android:layout_marginStart=\"@dimen\/activity_horizontal_margin\"\n        android:layout_marginLeft=\"@dimen\/activity_horizontal_margin\"\n        android:layout_marginTop=\"@dimen\/activity_vertical_margin\"\n        android:text=\"@string\/title_home\"\n        app:layout_constraintLeft_toLeftOf=\"parent\"\n        app:layout_constraintTop_toTopOf=\"parent\" \/&gt;\n\n    &lt;android.support.design.widget.BottomNavigationView\n        android:id=\"@+id\/nav_view\"\n        android:layout_width=\"0dp\"\n        android:layout_height=\"wrap_content\"\n        android:layout_marginStart=\"0dp\"\n        android:layout_marginEnd=\"0dp\"\n        android:background=\"?android:attr\/windowBackground\"\n        app:layout_constraintBottom_toBottomOf=\"parent\"\n        app:layout_constraintLeft_toLeftOf=\"parent\"\n        app:layout_constraintRight_toRightOf=\"parent\"\n        app:menu=\"@menu\/bottom_nav_menu\" \/&gt;\n\n&lt;\/android.support.constraint.ConstraintLayout&gt;\n<\/code><\/pre>\n<p>Create an xml file under menu folder<\/p>\n<pre><code>&lt;?xml version=\"1.0\" encoding=\"utf-8\"?&gt;\n&lt;menu xmlns:android=\"http:\/\/schemas.android.com\/apk\/res\/android\"&gt;\n\n    &lt;item\n        android:id=\"@+id\/navigation_home\"\n        android:icon=\"@drawable\/ic_home_black_24dp\"\n        android:title=\"@string\/title_home\" \/&gt;\n\n    &lt;item\n        android:id=\"@+id\/back\"\n        android:icon=\"@drawable\/back\"\n        android:title=\"@string\/title_dashboard\" \/&gt;\n\n&lt;\/menu&gt;\n<\/code><\/pre>\n<\/p><\/div>\n<div class=\"mt24\"><\/div>\n<\/div>\n<p>            <span class=\"d-none\" itemprop=\"commentCount\"><\/span> <\/p><\/div>\n<\/div>\n<p>[ad_2]<\/p>\n<p>solved How to add backbutton functionality to app <\/p>\n","protected":false},"excerpt":{"rendered":"<p>[ad_1] What you looking is call BottomNavigationView. You should place the id in onNavigationItemSelected. MainActivty public class MainActivity extends AppCompatActivity { private TextView mTextMessage; private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener = new BottomNavigationView.OnNavigationItemSelectedListener() { @Override public boolean onNavigationItemSelected(@NonNull MenuItem item) { switch (item.getItemId()) { case R.id.navigation_home: mTextMessage.setText(R.string.title_home); return true; case R.id.back: finish(); return true; } return false; } &#8230; <a title=\"[Solved] How to add backbutton functionality to app\" class=\"read-more\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-add-backbutton-functionality-to-app\/\" aria-label=\"More on [Solved] How to add backbutton functionality to app\">Read more<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[320],"tags":[323],"class_list":["post-24649","post","type-post","status-publish","format-standard","hentry","category-solved","tag-java"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.5 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>[Solved] How to add backbutton functionality to app - JassWeb<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/jassweb.com\/solved\/solved-how-to-add-backbutton-functionality-to-app\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"[Solved] How to add backbutton functionality to app - JassWeb\" \/>\n<meta property=\"og:description\" content=\"[ad_1] What you looking is call BottomNavigationView. You should place the id in onNavigationItemSelected. MainActivty public class MainActivity extends AppCompatActivity { private TextView mTextMessage; private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener = new BottomNavigationView.OnNavigationItemSelectedListener() { @Override public boolean onNavigationItemSelected(@NonNull MenuItem item) { switch (item.getItemId()) { case R.id.navigation_home: mTextMessage.setText(R.string.title_home); return true; case R.id.back: finish(); return true; } return false; } ... 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You should place the id in onNavigationItemSelected. MainActivty public class MainActivity extends AppCompatActivity { private TextView mTextMessage; private BottomNavigationView.OnNavigationItemSelectedListener mOnNavigationItemSelectedListener = new BottomNavigationView.OnNavigationItemSelectedListener() { @Override public boolean onNavigationItemSelected(@NonNull MenuItem item) { switch (item.getItemId()) { case R.id.navigation_home: mTextMessage.setText(R.string.title_home); return true; case R.id.back: finish(); return true; } return false; } ... 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