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Android Build a Simple Android App (2014) Testing and Debugging Toast Notifications

Toast same as popup?

Am i correct to say Toast is same as popup in Java? I mean if I want to show a popup message in android....

thanks

2 Answers

Kevin Faust
Kevin Faust
15,353 Points

it's actually a bit complicated and it's something you will do later on in the track. I can show you quickly show you how a basic pop up is formed.

Let's look at this:

PopUp.java
//this popup box class is called AlertDialogFragment

public class AlertDialogFragment extends DialogFragment { // must extend this class

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState) { //when we make a dialog, run this
        Context context = getActivity();

          //create a new AlertDialog.Builder which is what we call to create a dialog box

        AlertDialog.Builder builder = new AlertDialog.Builder(context) 
                .setTitle("title here") //set a title
                .setMessage("some message text") //set a message

                  //set the button text. the null means that when the popup box is closed, nothing will happen

                .setPositiveButton("button text", null); 

        return  builder.create(); //create the dialog box
    }
}

I added some comments above to give a brief breakdown. this'll generally be what you need when creating a basic pop up box. This will be created in a separate class

In our main, we would use something like this. Usually in a method so we can call popup boxes easily anywhere in our code:

Main.java
        AlertDialogFragment dialog = new AlertDialogFragment();
        dialog.show(getFragmentManager(), "error_dialog");

We create the new popup box object. and then we run the show() method.

We pass in two things: getFragmentManager() and just some text to describe the popup box. this will not be shown

Those are just the two parameters we generally will always pass in

The android site has a nice little tutorial on popup boxes if you wanna learn more:

http://developer.android.com/guide/topics/ui/dialogs.html

Hope that helped!,

Kevin

thanks :)

Kevin Faust
Kevin Faust
15,353 Points

Nope a toast is different. It's just a temporary message that shows on your screen which goes away after a few seconds. Toasts also have no buttons or anything unlike pop up boxes.

Does that answer your question?

So what is the popup for android? How can I do that?

Thanks