How To Prevent Double Code Running By Clicking Twice Fast To A Button In Android

If i click fast to my button in my Android app, it seems that code behind it runs twice. If i click my menu button twice the activity that has to be launch onclick just starts twic

Solution 1:

You can use following code: btn.setEnabled(false);

btn.setOnclickListener(newView.onClickListener(){

      publicvoidonClick(View v) {
            btn.setEnabled(false);

      }
});

Solution 2:

You can Disable the view temporarily like this

publicstaticvoiddisableTemporarly(final View view) {

        view.setEnabled(false);
        view.post(newRunnable() {
            @Overridepublicvoidrun() {

                view.setEnabled(true);
            }
        });
    }

---

Edit:

The above solution will work fine. But it will become even better when using the power of Kotlin

1) Create the SafeClikc Listener

classSafeClickListener(
        privatevar defaultInterval: Int = 1000,
        privateval onSafeCLick: (View) -> Unit
) : View.OnClickListener {

    privatevar lastTimeClicked: Long = 0overridefunonClick(v: View) {
        if (SystemClock.elapsedRealtime() - lastTimeClicked < defaultInterval) {
            return
        }
        lastTimeClicked = SystemClock.elapsedRealtime()
        onSafeCLick(v)
    }
}

2) Add extension function to make it works with any view, this will create a new SafeClickListener and delegate the work to it

fun View.setSafeOnClickListener(onSafeClick: (View) -> Unit) {

    val safeClickListener = SafeClickListener {
        onSafeClick(it)
    }
    setOnClickListener(safeClickListener)
}

3) Now it is very easy to use it

settingsButton.setSafeOnClickListener {
    showSettingsScreen()
}

Happy Kotlin ;)

Solution 3:

Button.setOnClickListener(newView.OnClickListener {  
   @OverridepublicvoidonClick(final View v) {
        v.setEnabled(false);
        v.postDelayed(newRunnable() {
         @Overridepublicvoidrun() {
            v.setEnabled(true);
         }
        },150); //150 is in milliseconds
    }
 });  

Solution 4:

Well, that's the expected behaviour...

Launch your new acvitity with SINGLE_TOP flag

Or try setting android:launchMode="singleInstance" for Top20 activity in your AndroidManifest.xml

Solution 5:

This solves the issue of multiple Instances of activity, and still play the default animation

intent.setFlags(Intent.FLAG_ACTIVITY_CLEAR_TOP);