Handling a Menu Item Click Event - Android

Question

I want to create an intent that starts a new activity once a Menu Item is clicked  but I m not sure how to do this  I ve been reading through the android documentation  but my implementation isn t correct  and some guidance in the right direction would help  I ve listed my code below and commented out my problem areas  I think I m invoking the wrong method   package com jbsoft SimpleFlashlight   import android app Activity  import android content Intent  import android os Bundle  import android view    import android view MenuItem OnMenuItemClickListener  import android widget Button  import android widget Toast   public class SimpleFlashLightActivity extends Activity       Button GreenButton       Declare instances of buttons to use later   Button BlueButton     private static final int OK MENU ITEM   Menu FIRST         Called when the activity is first created        Override   public void onCreate Bundle savedInstanceState        super onCreate savedInstanceState       setContentView R layout main        BlueButton    Button  findViewById R id bluebutton       BlueButton setOnClickListener new View OnClickListener            public void onClick View v               Display msg when user clicks Blue Button         showColorChangeMsg                Switch Activities on click         Intent blueintent   new Intent SimpleFlashLightActivity this                                         BlueFlashLightActivity class           startActivity blueintent                          Install listener for second button     GreenButton    Button  findViewById R id greenbutton       GreenButton setOnClickListener new View OnClickListener            public void onClick View v                Display msg when user clicks Green Button         showColorChangeMsg             Intent greenintent   new        Intent SimpleFlashLightActivity this                                                 GreenFlashLightActivty class           startActivity greenintent                                                                                                                                 Method Declarations    THIS IS WHERE I M HAVING A PROBLEM      MenuItem AddColorButton    MenuItem findViewById R id menu insert        boolean onOptionsItemSelected AddColorButton          Intent intent   new  Intent SimpleFlashLightActivity this                                    BlueFlashLightActivity class         startActivity intent         return true                                                                                                                       private void showColorChangeMsg           Toast msgtoast   Toast makeText this getBaseContext     SWITCH COLOR                                        Toast LENGTH LONG       msgtoast show          private void showMsg String msg        Toast toast   Toast makeText this  msg  Toast LENGTH LONG       toast show           public boolean onCreateOptionsMenu Menu menu        super onCreateOptionsMenu menu       MenuInflater mi   getMenuInflater        mi inflate R menu list menu  menu       return true           Override   public boolean onOptionsItemSelected MenuItem item        switch  item getItemId          case OK MENU ITEM        showMsg  OK          break            return super onOptionsItemSelected item

User · Answer

Menu items file looks like  res menu menu main xml   lt menu 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      tools context   MainActivity  gt       lt item         android id    id settings          android title  Setting          app showAsAction  never    gt       lt item         android id    id my activity          android title  My Activity          app showAsAction  always          android icon   android drawable btn radio   gt   lt  menu gt    Java code looks like  src MainActivity java   Override     public boolean onCreateOptionsMenu Menu menu    present          getMenuInflater   inflate R menu menu main  menu           return true              Override     public boolean onOptionsItemSelected MenuItem item            int id   item getItemId           if  id    R id my activity                Intent intent1   new Intent this MyActivity class               this startActivity intent1               return true                     if  id    R id settings                Toast makeText this   Setting   Toast LENGTH LONG  show                return true                     return super onOptionsItemSelected item           And add following code to your AndroidManifest xml file   lt activity             android name   MyActivity              android label   string app name   gt           lt  activity gt    I hope it will help you

User · Answer

Replace Your onOptionsItemSelected as      Override           public boolean onOptionsItemSelected MenuItem item                switch  item getItemId                    case OK MENU ITEM                   startActivity new Intent DashboardActivity this  SettingActivity class                     break                  You can handle other cases Here                default                    super onOptionsItemSelected item                               Here  I want to navigate from DashboardActivity  to SettingActivity

User · Answer

in addition to the options shown in your question  there is the possibility of implementing the action directly in your xml file from the menu  for example   lt item    android id  quot   id OK MENU ITEM quot     android onClick  quot showMsgDirectMenuXml quot    gt   And for your Java  Activity  file  you need to implement a public method with a single parameter of type MenuItem  for example   private void showMsgDirectMenuXml MenuItem item        Toast toast   Toast makeText this   quot OK quot   Toast LENGTH LONG       toast show         NOTE  This method will have behavior similar to the onOptionsItemSelected  MenuItem item

User · Answer

This is how it looks like in Kotlin main xml  lt menu xmlns android  quot http   schemas android com apk res android quot  xmlns app  quot http   schemas android com apk res-auto quot  gt   lt item     android id  quot   id action settings quot      android orderInCategory  quot 100 quot      android title  quot  string action settings quot      app showAsAction  quot never quot    gt   lt item     android id  quot   id action logout quot      android orderInCategory  quot 101 quot      android title  quot  string sign out quot      app showAsAction  quot never quot    gt    Then in MainActivity override fun onCreateOptionsMenu menu  Menu   Boolean          Inflate the menu  this adds items to the action bar if it is present      menuInflater inflate R menu main  menu      return true    This is onOptionsItemSelected function override fun onOptionsItemSelected item  MenuItem   Boolean       return when item itemId           R id action settings - gt                true                   R id action logout - gt                signOut               true                   else - gt  return super onOptionsItemSelected item           For starting new activity private fun signOut        MySharedPreferences clearToken       startSplashScreenActivity      private fun startSplashScreenActivity        val intent   Intent GrepToDo applicationContext    SplashScreenActivity  class java      startActivity intent      finish

User · Answer

This code is work for me   Override public boolean onOptionsItemSelected MenuItem item         int id   item getItemId          if  id    R id action settings         add your action here that you want         return true             else if  id  R id login                     add your action here that you want              return super onOptionsItemSelected item

User · Answer

simple code for creating menu     Override public boolean onCreateOptionsMenu Menu menu        MenuInflater inflater   getMenuInflater        inflater inflate R menu game menu  menu       return true      simple code for menu selected   Override public boolean onOptionsItemSelected MenuItem item           Handle item selection     switch  item getItemId          case R id new game          newGame            return true      case R id help          showHelp            return true      default          return super onOptionsItemSelected item             for more detail go below link    Link1  Link2

User · Answer

Add Following Code   Override public boolean onOptionsItemSelected MenuItem item        switch  item getItemId          case R id new item          Intent i   new Intent this SecondActivity class               this startActivity i               return true      default          return super onOptionsItemSelected item

[android] Handling a Menu Item Click Event - Android

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