Calling one Activity from another in Android

Question

How can I call another activity from one  the current  activity    And for the same I want to call an activity which contains a dialog message box from my current activity

User · Answer

As we don t know what are the names of your activities classes  let s call your current activity Activity1  and the one you wish to open - Activity2  these are the names of the classes   First you need to define an intent that will be sent to Activity2   Intent launchActivity2   new Intent Activity1 this  Activity2 class     Then  you can simply launch the activity by running      startActivity launchActivity2

User · Answer

Add the following to your on button click event   Intent intent   new Intent First this  Second class   startActivity intent   finish

User · Answer

I used following code on my sample application to start new activity   Button next    Button  findViewById R id TEST   next setOnClickListener new View OnClickListener         public void onClick View view            Intent myIntent   new Intent  view getContext    MyActivity class           startActivityForResult myIntent  0

User · Answer

Very easiest way to call one activity to another is     startActivity  new Intent  getApplicationContext    YourActivity class

User · Answer

First question   Use the Intent to call another Activity   In the Manifest  you should add   lt activity android name  ListViewImage  gt  lt  activity gt   lt activity android name  com company listview ListViewImage  gt   lt  activity gt    And in your current activity    btListe    ImageButton findViewById R id Button Liste       btListe setOnClickListener new OnClickListener            public void onClick View v                        intent   new Intent main this  ListViewImage class               startActivity intent               finish                        Second question   sendButton setOnClickListener new OnClickListener             public void onClick View v                String valueString   editValue getText   toString                long value              if  valueString    null                    value   Long parseLong valueString                             else                   value   0                             Bundle sendBundle   new Bundle                sendBundle putLong  value   value                Intent i   new Intent Activity1 this  Activity2 class               i putExtras sendBundle               startActivity i                finish                        and in Activity2    Bundle receiveBundle   this getIntent   getExtras        final long receiveValue   receiveBundle getLong  value        receiveValueEdit setText String valueOf receiveValue        callReceiverButton setOnClickListener new OnClickListener             public void onClick View v                Intent i   new Intent Activity2 this  Receiver class               i putExtra  new value   receiveValue - 10

User · Answer

check the following code to call one activity from another   Intent intent   new Intent CurrentActivity this  OtherActivity class   CurrentActivity this startActivity intent

User · Answer

I have implemented this way and it works It is much easier than all that is reported   We have two activities   one is the main and another is the secondary   In secondary activity  which is where we want to end the main activity   define the following variable   public static Activity ACTIVIDAD    And then the following method   public static void enlaceActividadPrincipal Activity actividad         tuActividad ACTIVIDAD actividad      Then  in your main activity from the onCreate method   you make the call       actividadSecundaria enlaceActividadPrincipal this     Now  you re in control  Now  from your secondary activity  you can complete the main activity  Finish calling the function  like this   ACTIVIDAD finish

User · Answer

Put this inside the onCreate   method of MainActivity1 java  Button btnEins    Button  findViewById R id save           btnEins setOnClickListener new OnClickListener                  Override             public void onClick View v                    Intent intencion   new Intent v getContext   MainActivity2 class                         startActivity intencion

User · Answer

check the following code to open new activit   Intent f   new Intent MainActivity this  SecondActivity class    startActivity f

User · Answer

This task can be accomplished using one of the android s main building block named as Intents and One of the methods public void startActivity  Intent intent  which belongs to your Activity class   An intent is an abstract description of an operation to be performed  It can be used with startActivity to launch an Activity  broadcastIntent to send it to any interested BroadcastReceiver components  and startService Intent  or bindService Intent  ServiceConnection  int  to communicate with a background Service   An Intent provides a facility for performing late runtime binding between the code in different applications  Its most significant use is in the launching of activities  where it can be thought of as the glue between activities  It is basically a passive data structure holding an abstract description of an action to be performed   Refer the official docs -- http   developer android com reference android content Intent html  public void startActivity  Intent intent  -- Used to launch a new activity   So suppose you have two Activity class and on a button click s OnClickListener   you wanna move from one Activity to another then  --    PresentActivity -- This is your current activity from which you want to go the second activity  NextActivity -- This is your next Activity on which you want to move  It may contain anything like you are saying dialog box     So the Intent would be like this  Intent PresentActivity this  NextActivity class    Finally this will be the complete code    public class PresentActivity extends Activity           protected void onCreate Bundle icicle                super onCreate icicle                setContentView R layout content layout id                final Button button    Button  findViewById R id button id               button setOnClickListener new View OnClickListener                     public void onClick View v                           Perform action on click                         Intent activityChangeIntent   new Intent PresentActivity this  NextActivity class                           currentContext startActivity activityChangeIntent                        PresentActivity this startActivity activityChangeIntent                                                       This exmple is related to button click you can use the code anywhere which is written inside button click s OnClickListener   at any place where you want to switch between your activities

User · Answer

The following code demonstrates how you can start another activity via an intent   Start the activity with an intent connected to the specified class  Intent i   new Intent this  ActivityTwo class   startActivity i     Activities which are started by other Android activities are called sub-activities  This wording makes it easier to describe which activity is meant

[android] Calling one Activity from another in Android

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