CODEWITHSUNDEEP
android
Blaze Tama
Blaze Tama

Reputation: 10948

Handling very fast button click on Android

I have a "+" and "-" button that will increase/decrease the quantity of an item.

I need to send a network request (hitting webservice) everytime the quantity is changed.

The problem is, the User probably will "spam" the "+" and "-" button. For example, they might pressed it 3 times in a second.

In regard of this case, I would like to wait a second, and then send the network request based on the last quantity. This is to reduce the number of requests i need to do (from 3 requests to just 1 request, in this case).

What is the recommended way to do this?

Can I solve this problem by using postDelayed in my OnClick?

Upvotes: 1

Views: 536

Answers (2)

cyroxis
cyroxis

Reputation: 3711

As an update to Ivan's answer and fixed two issues:

  • The postDelayed is not needed for your logic and adds and extra 1 second delay

  • Move the update to lastClick into the loop we only want it to update when we actually trigger a network call.

Example

private long lastClick;

void onClick(View view) {
    // Check if network call has been made in last second
    if (System.currentTimeMillis() - lastClick >= 1000) {
        // Mark time of network call    
        lastClick = System.currentTimeMillis();
        makeNetworkRequest();
    }
}

Upvotes: 0

Ivan Rudnev
Ivan Rudnev

Reputation: 400

I think you can try something like this

private long lastClick;

void onClick(View view) {
    lastClick = System.currentTimeMillis();

    new Handler().postDelayed(new Runnable() {
        @Override
        public void run() {
            if (System.currentTimeMillis() - lastClick >= 1000) {
                makeNetworkRequest();
            }
        }
    }, 1000);
}

This code will skip first requests and run only last request after 1 second pause

Upvotes: 1

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