CODEWITHSUNDEEP
androidandroid-activityandroid-intent
ghostrider
ghostrider

Reputation: 5259

Having a refresh button

Lets suppose I am on screen2 on my application, and my application retrieves data from a database. I want to have a refresh button on it. So I am writing this code:

 b3.setOnClickListener(new View.OnClickListener() {
            public void onClick(View v) {
                Intent i = new Intent(Screen2.this,Screen2.class);
                startActivity(i);
        }
        });

where b3 is the button.My question is kind of theoritically: Is there any better way? Does this make my application heavy or causes any other problems to OS if I do for example several time refresh.

Would it be better to do the refresh for example at specific times? If yes, how I will write this code?

Thanks.

Upvotes: 0

Views: 138

Answers (2)

clemp6r
clemp6r

Reputation: 3723

You should not restart the activity each time you want updated information: just update your views when the update button is clicked.

Upvotes: 0

Androidparanoid
Androidparanoid

Reputation: 199

you could use adapter.notifyDataSetChanged(). much more efficient http://developer.android.com/reference/android/widget/ArrayAdapter.html#notifyDataSetChanged()

Edit: (thats only valid if you are using an ArrayAdapter)

Upvotes: 2

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