How to start a new activity when I click on button?

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how to start a new activity when click on button

I want to make my app go to a new screen when i click a button? Do i need a new activity for this or is there another way? If it is an activity can someone tell me how to make a button linked to a activity? thanks!

p.s. Please tell me which files the code u say go in, thansk!

EDIT: I appologize for my lack of awareness of the sites policys on searching for things, I am new to this and apologize. Thanks for the help though for linking me to the right spot for this. Once again sorry guys.

It sounds like you really need to start at the beginning. I recommend the series of tutorials by Vogella, http://www.vogella.com/articles/Android/article.html. stackoverflow tends to appreciate questions better when the poster shows that they've already made an effort to get started. — Turnsole, Aug 17 '12 at 14:10
http://developer.android.com/training/basics/firstapp/starting-activity.html — Benito Bertoli, Aug 17 '12 at 14:11

score 2 · Accepted Answer · answered Aug 17 '12 at 14:11

2

In the xml-button definition

<Button
...
android:onClick="buttonClicked"
/>

in the activity

public void buttonClicked( View v ){
Intent i = new Intent( this, NewActivity.class );
startActivity( i );
}

Here you go

answered Aug 17 '12 at 14:11

fklappan

3,259
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score 1 · Answer 2 · edited Aug 17 '12 at 14:31

I guess you already have a button defined. All you need to do is:

//Here you define a lisener that will be fired every time you press on the button
Button btnOpenActivity = (Button) findViewById(R.id.YOUR_BUTTON_ID);
btnOpenActivity.setOnClickListener(new OnClickListener() { 
    public void onClick(View v) {
        //Here you start the activity, by creating and passing an Intent
        Intent activityIntent = new Intent (YOUR CONTEXT, SecondActivity.class);
        startActivity (activityIntent);
    }
});

That's it.

Because it looks like you are a beginner in Android programming, I would recommend you to go to TheNewBoston channel in youtube. This is where I learned android programming.

score 1 · Answer 3 · answered Aug 17 '12 at 14:23

Yes, you can create a new Activity. Or you could use Fragments. Activity is probably the easiest method, and yes, it can be done with a button click:

    Button yourButton = (Button) findViewById(R.id.yourButtonId);

yourButton.setOnClickListener(new OnClickListener() { 
    public void onClick(View v) {

        Intent newIntent = new Intent (this, ActivityYouWantToStart.class);
        startActivity (newIntent);
    }
});

score 1 · Answer 4 · answered Aug 17 '12 at 14:30

Yes, to display a new screen - you'll need to create a new activity and its corresponding layout xml file.

Suppose you have two activities: FirstActivity and SecondActivity and you want to open the later from the former. In that case you can set the event listener for the button on FirstActivity as:

btnSecondScreen.setOnClickListener(
    new View.OnClickListener(){
        public void onClick(View v){
            startActivity(new Intent(FirstActivity.this, SecondActivity.class));
        }
    }
);

How to start a new activity when I click on button?

4 Answers4