What is the best way to prevent double clicks on a button in Android?
This question is related to
android
android-button
double-click
You can do it in very fancy way with Kotlin Extension Functions and RxBinding
fun View.clickWithDebounce(debounceTime: Long = 600L, action: () -> Unit): Disposable =
RxView.clicks(this)
.debounce(debounceTime, TimeUnit.MILLISECONDS)
.observeOn(AndroidSchedulers.mainThread())
.subscribe { action() }
or
fun View.clickWithDebounce(debounceTime: Long = 600L, action: () -> Unit) {
this.setOnClickListener(object : View.OnClickListener {
private var lastClickTime: Long = 0
override fun onClick(v: View) {
if (SystemClock.elapsedRealtime() - lastClickTime < debounceTime) return
else action()
lastClickTime = SystemClock.elapsedRealtime()
}
})
}
and then just:
View.clickWithDebounce{ Your code }
for any one using data-binding :
@BindingAdapter("onClickWithDebounce")
fun onClickWithDebounce(view: View, listener: android.view.View.OnClickListener) {
view.setClickWithDebounce {
listener.onClick(view)
}
}
object LastClickTimeSingleton {
var lastClickTime: Long = 0
}
fun View.setClickWithDebounce(action: () -> Unit) {
setOnClickListener(object : View.OnClickListener {
override fun onClick(v: View) {
if (SystemClock.elapsedRealtime() - LastClickTimeSingleton.lastClickTime < 500L) return
else action()
LastClickTimeSingleton.lastClickTime = SystemClock.elapsedRealtime()
}
})
}
<androidx.appcompat.widget.AppCompatButton
..
android:text="@string/signup_signin"
app:onClickWithDebounce="@{() -> viewModel.onSignUpClicked()}"
... />
If the only thing the button do is launching a new activity the problem could be solved with "singleTop" activiy launch mode and FLAG_ACTIVITY_CLEAR_TOP being set on the intent. This one will not work in the case of complex activity's ierarchy but sutable for simple tree-like application structure.
This is my solution:
if (waitDouble) {
waitDouble = false;
Thread thread = new Thread() {
@Override
public void run() {
try {
sleep(300);
if (waitDouble == false) {
waitDouble = true;
singleClick(); //singleClick
}
} catch (InterruptedException e) {
e.printStackTrace();
}
}
};
thread.start();
} else {//DoubleClick
DoubleClick();
waitDouble = true;
}
Or another solution:
public class NoDoubleClickUtils {
private static long lastClickTime;
private final static int SPACE_TIME = 500;
public static void initLastClickTime() {
lastClickTime = 0;
}
public synchronized static boolean isDoubleClick() {
long currentTime = System.currentTimeMillis();
boolean isClick2;
if (currentTime - lastClickTime > SPACE_TIME) {
isClick2 = false;
} else {
isClick2 = true;
}
lastClickTime = currentTime;
return isClick2;
}
}
I hope this can help YOU, put the code in you event handler.
// --------------------------------------------------------------------------------
boolean hasTag = null != which.getTag( R.id.preventing_double_click_tag );
if ( hasTag ) {
// Do not handle again...
return;
} else {
which.setTag( R.id.action, Boolean.TRUE );
which.postDelayed( new Runnable() {
@Override
public void run() {
which.setTag( R.id.action, null );
Log.d( "onActin", " The preventing double click tag was removed." );
}
}, 2000 );
}
In kotlin
button.setOnClickListener {
it?.apply { isEnabled = false; postDelayed({ isEnabled = true }, 400) } //400 ms
//do your work
}
setEnabled(false) works perfectly for me.
The idea is I write { setEnabled(true); } in the beginning and just make it false on the first click of the button.
It seems that setting your click listeners in onResume and nulling them out in onPause does the trick too.
If on click of the button, you're opening a new fragment, just add android:clickable="true" to the root view of the new fragment being opened.
Click Guard works well with Butter Knife
ClickGuard.guard(mPlayButton);
Generic Solution
@Override
public void onClick(View v) {
tempDisableButton(v);
//all the buttons view..
}
public void tempDisableButton(View viewBtn) {
final View button = viewBtn;
button.setEnabled(false);
button.postDelayed(new Runnable() {
@Override
public void run() {
button.setEnabled(true);
}
}, 3000);
}
button.setOnClickListener(new OnClickListener() {
@Override
public void onClick(View view) {
//to prevent double click
button.setOnClickListener(null);
}
});
Adding to Jim's answer the code can be made more concise:
fun View.setOnSingleClick(onClick: () -> Unit) {
var lastClickTime = 0L
setOnClickListener {
if (currentTimeMillis() > lastClickTime + 750) onClick()
lastClickTime = currentTimeMillis()
}
}
Usage:
aView.setOnSingleClick { }
in my situation i was using a button view and it was taking the clicks too quickly. just disable the clickable and enable it again after a few seconds...
Basically i made a wrapper class that wraps around your Views onClickListener. you can also set a custom delay if you want.
public class OnClickRateLimitedDecoratedListener implements View.OnClickListener {
private final static int CLICK_DELAY_DEFAULT = 300;
private View.OnClickListener onClickListener;
private int mClickDelay;
public OnClickRateLimitedDecoratedListener(View.OnClickListener onClickListener) {
this(onClickListener, CLICK_DELAY_DEFAULT);
}
//customize your own delay
public OnClickRateLimitedDecoratedListener(View.OnClickListener onClickListener, int delay) {
this.onClickListener = onClickListener;
mClickDelay = delay;
}
@Override
public void onClick(final View v) {
v.setClickable(false);
onClickListener.onClick(v);
v.postDelayed(new Runnable() {
@Override
public void run() {
v.setClickable(true);
}
}, mClickDelay);
}
}
and to call it simply do this:
mMyButton.setOnClickListener(new OnClickRateLimitedDecoratedListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
doSomething();
}
}));
or provide your own delay:
mMyButton.setOnClickListener(new OnClickRateLimitedDecoratedListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
doSomething();
}
},1000));
UPDATE: Above ways a little old fashion now that RxJava is so prevalent. as others have mentioned, in android we could use a throttle to slow down the clicks. here is one example:
RxView.clicks(myButton)
.throttleFirst(2000, TimeUnit.MILLISECONDS, AndroidSchedulers.mainThread())
.subscribe {
Log.d("i got delayed clicked")
}
}
you can use this library for it: implementation 'com.jakewharton.rxbinding2:rxbinding:2.0.0'
saving a last click time when clicking will prevent this problem.
i.e.
private long mLastClickTime = 0;
...
// inside onCreate or so:
findViewById(R.id.button).setOnClickListener(new OnClickListener() {
@Override
public void onClick(View v) {
// mis-clicking prevention, using threshold of 1000 ms
if (SystemClock.elapsedRealtime() - mLastClickTime < 1000){
return;
}
mLastClickTime = SystemClock.elapsedRealtime();
// do your magic here
}
}
Disabling the button or setting unclickable is not enough if you are doing computationally intensive work in onClick() since click events can get queued up before the button can be disabled. I wrote an abstract base class that implements OnClickListener that you can override instead, that fixes this problem by ignoring any queued up clicks:
/**
* This class allows a single click and prevents multiple clicks on
* the same button in rapid succession. Setting unclickable is not enough
* because click events may still be queued up.
*
* Override onOneClick() to handle single clicks. Call reset() when you want to
* accept another click.
*/
public abstract class OnOneOffClickListener implements OnClickListener {
private boolean clickable = true;
/**
* Override onOneClick() instead.
*/
@Override
public final void onClick(View v) {
if (clickable) {
clickable = false;
onOneClick(v);
//reset(); // uncomment this line to reset automatically
}
}
/**
* Override this function to handle clicks.
* reset() must be called after each click for this function to be called
* again.
* @param v
*/
public abstract void onOneClick(View v);
/**
* Allows another click.
*/
public void reset() {
clickable = true;
}
}
Usage is same as OnClickListener but override OnOneClick() instead:
OnOneOffClickListener clickListener = new OnOneOffClickListener() {
@Override
public void onOneClick(View v) {
// Do stuff
this.reset(); // or you can reset somewhere else with clickListener.reset();
}
};
myButton.setOnClickListener(clickListener);
I prefer to use a semaphore block. It is thread-safe and can be used not only for buttons.
The code sample is simple:
private UtilsSemaphore buttonSemaphore = new UtilsSemaphore();
public void onClick(View view)
{
boolean isAllowed = buttonSemaphore.lock();
if(!isAllowed)
{
return;
}
final View clickedButton = view;
clickedButton.setEnabled(false);
/* some code */
buttonSemaphore.unlock();
clickedButton.setEnabled(true);
}
public class UtilsSemaphore {
public int counter = 0;
public boolean lock()
{
int counterValue = ++counter;
boolean isAllowed = counterValue < 2;
if(!isAllowed)
{
unlock();
}
return isAllowed;
}
public void unlock()
{
--counter;
}
}
This solution (Kotlin) works on me:
abstract class SingleClickListener : View.OnClickListener {
private val MIN_CLICK_INTERVAL: Long = 1000
private var mLastClickTime: Long = 0
abstract fun onSingleClick(v: View?)
override fun onClick(v: View?) {
if (mLastClickTime <= 0) {
mLastClickTime = SystemClock.uptimeMillis()
onSingleClick(v)
return
}
if (SystemClock.uptimeMillis() - mLastClickTime <= MIN_CLICK_INTERVAL) {
return
}
mLastClickTime = SystemClock.uptimeMillis()
onSingleClick(v)
}
}
Usage:
someView.setOnClickListener(object : SingleClickListener() {
override fun onSingleClick(v: View?) {
v?.also { klik(it) }
}
})
Or also create extension function for adding ClickListener on view easily:
fun View.click(klik: (View) -> Unit) {
this.setOnClickListener(object : SingleClickListener() {
override fun onSingleClick(v: View?) {
v?.also { klik(it) }
}
})
}
// Usage
class XPerimentActivity : AppCompatActivity() {
override fun onCreate(savedInstanceState: Bundle?) {
super.onCreate(savedInstanceState)
setContentView(R.layout.activity_xperiment_layout)
submit_button.click {
// do your magic
}
}
}
Click events queue up when the UI thread is blocked. On a button click event, change to a background task as soon as possible to avoid click events queueing up behind each other.
Declare a volatile boolean or lock inside the activity class:
private volatile boolean saving = false;
Create a Button with an onClickListener that is gated by saving and start a background task to do the work:
saveButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
if (!saving) {
saving = true;
new SaveAsyncTask().execute();
}
}
});
Create an inner SaveAsyncTask class to do the work in the background:
class SaveAsyncTask extends AsyncTask {
@Override
protected Object doInBackground(Object[] objects) {
// Do something here, simulate a 3 second task
SystemClock.sleep(3000);
saving = false;
return null;
}
}
Kotlin create class SafeClickListener
class SafeClickListener(
private var defaultInterval: Int = 1000,
private val onSafeCLick: (View) -> Unit
) : View.OnClickListener {
private var lastTimeClicked: Long = 0 override fun onClick(v: View) {
if (SystemClock.elapsedRealtime() - lastTimeClicked < defaultInterval) {
return
}
lastTimeClicked = SystemClock.elapsedRealtime()
onSafeCLick(v)
}
}
create a function in baseClass or else
fun View.setSafeOnClickListener(onSafeClick: (View) -> Unit) {val safeClickListener = SafeClickListener {
onSafeClick(it)
}
setOnClickListener(safeClickListener)
}
and use on button click
btnSubmit.setSafeOnClickListener {
showSettingsScreen()
}
My solution is try to using a boolean variable :
public class Blocker {
private static final int DEFAULT_BLOCK_TIME = 1000;
private boolean mIsBlockClick;
/**
* Block any event occurs in 1000 millisecond to prevent spam action
* @return false if not in block state, otherwise return true.
*/
public boolean block(int blockInMillis) {
if (!mIsBlockClick) {
mIsBlockClick = true;
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
mIsBlockClick = false;
}
}, blockInMillis);
return false;
}
return true;
}
public boolean block() {
return block(DEFAULT_BLOCK_TIME);
}
}
And using as below:
view.setOnClickListener(new View.OnClickListener() {
private Blocker mBlocker = new Blocker();
@Override
public void onClick(View v) {
if (!mBlocker.block(block-Time-In-Millis)) {
// do your action
}
}
});
UPDATE: Kotlin solution, using view extension
fun View.safeClick(listener: View.OnClickListener, blockInMillis: Long = 500) {
var lastClickTime: Long = 0
this.setOnClickListener {
if (SystemClock.elapsedRealtime() - lastClickTime < blockInMillis) return@setOnClickListener
lastClickTime = SystemClock.elapsedRealtime()
listener.onClick(this)
}
}
more preferred solution is,
onclick(){
btn.setEnabled(false);
btn.setClickable(false);
//yourwork
myWork();
}
myWork(){
//your tasks.
btn.setEnabled(true);
btn.setClickable(true);
}
As a link can be ignored easily, I had to repeat this again and again
final Button button = (Button) findViewById(R.id.button);
button.setOnClickListener(new View.OnClickListener() {
private final AtomicBoolean onClickEnabled = new AtomicBoolean(true);
@Override
public void onClick(View v) {
Log.i("TAG", "onClick begin");
if (!onClickEnabled.compareAndSet(true, false)) {
Log.i("TAG", "onClick not enabled");
return;
}
button.setEnabled(false);
// your action here
button.setEnabled(true);
onClickEnabled.set(true);
Log.i("TAG", "onClick end");
}
});
You can use this method. By using post delay you can take care for double click events.
void debounceEffectForClick(View view) {
view.setClickable(false);
view.postDelayed(new Runnable() {
@Override
public void run() {
view.setClickable(true);
}
}, 500);
}
The Best and simple solution i found is
1. to create a boolean and set as false (default) like
private boolean itemClicked = false;
/* for a safer side you can also declare boolean false in onCreate() also. */
and at onclick() method check
2. if(!itemClicked)
{
itemClicked = true;
// rest of your coding functionality goes here of onClick method.
}
3. last step is to set boolean false in onResume()
@override
onResume()
{
super.onResume(0);
itemClicked = false;
}
Try this, it is working:
mButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
mSlotLayout.setEnabled(false);
// do your work here
Timer buttonTimer = new Timer();
buttonTimer.schedule(new TimerTask() {
@Override
public void run() {
runOnUiThread(new Runnable() {
@Override
public void run() {
mButton.setEnabled(true);
}
});
}
}, 500); // delay button enable for 0.5 sec
}
});
Setting the button as clickable false upon clicking and true once it is desired to make the button clickable again is the right approach. For instance, consider the following scenario: you are making a service call upon click of a button and once the service is done you want to display a dialog. For this, once the button is clicked you can set setClickable(false) and once the service responds you will do setClicklable(true) through a reference you pass to your custom dialog. When dialog invokes isShowing() you can trigger the listener and setClicklable(true).
This solution is quick and neat.
basically you just prevent double touch from the base styles in your app and implement standard on click listener. This works like a charm with touches at the same time of different views.
<style name="AppTheme" parent="Theme.AppCompat.NoActionBar">
...
<item name="android:splitMotionEvents">false</item>
<item name="android:windowEnableSplitTouch">false</item>
</style>
If your app uses some kind of gesture event this is not the right answer.
The KLEANEST Kotlin idiomatic way:
class OnSingleClickListener(private val block: () -> Unit) : View.OnClickListener {
private var lastClickTime = 0L
override fun onClick(view: View) {
if (SystemClock.elapsedRealtime() - lastClickTime < 1000) {
return
}
lastClickTime = SystemClock.elapsedRealtime()
block()
}
}
fun View.setOnSingleClickListener(block: () -> Unit) {
setOnClickListener(OnSingleClickListener(block))
}
Usage:
button.setOnSingleClickListener { ... }
If someone is still looking for a short answer you can use the below code
private static long mLastClickTime = 0;
if (SystemClock.elapsedRealtime() - mLastClickTime < 1000) { // 1000 = 1second
return;
}
mLastClickTime = SystemClock.elapsedRealtime();
This code will go inside the if statement whenever the user clicks on the View within 1 second and then the return; will be initiated and the further code will not initiate.
I also run in similar problem , I was displaying some datepicker & timepickers where sometimes it got click 2 times. I have solved it by this
long TIME = 1 * 1000;
@Override
public void onClick(final View v) {
v.setEnabled(false);
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
v.setEnabled(true);
}
}, TIME);
}
You can change time depending upon your requirement. This method work for me.
With Kotlin extension function :
fun View.onSingleClick(action: (v: View) -> Unit) {
setOnClickListener(object : View.OnClickListener {
override fun onClick(v: View) {
isEnabled = false
action(v)
postDelayed({ isEnabled = true }, 700)
}
})
}
usage:
button.onSingleClick { myAction() }
I needed that woking with fragments and just put a flag to controll the clicks: I only want the first one, the others can't access to the listener
private boolean flag = true;
...
@Override
public void onClick(View view) {
...
if (flag) {
...
listener.onFragmentInteraction(Constants.MY_FRAGMENT, bundle);
flag = false;
}
...
}
Hope it will useful, and correct me if it is not correct
For me only remembering timestamp and checking against it (that more than 1 sec passed since previous click) helped.
I found none of these suggestions works if the onClick method doesn't return immediately. The touch event is queued by Android and the next onClick is called only after the first one is finished. (Since this is done on the one UI thread this is really normal.) I needed to use the time when the the onClick function is finished + one boolean variable to mark whether the given onClick is running. Both these marker attributes are static to avoid any onClickListener to run at the same time. (If user clicks on another button) You can simple replace your OnClickListener to this class and instead of implementing the onClick method you need to implement the abstract oneClick() method.
abstract public class OneClickListener implements OnClickListener {
private static boolean started = false;
private static long lastClickEndTime = 0;
/* (non-Javadoc)
* @see android.view.View.OnClickListener#onClick(android.view.View)
*/
@Override
final public void onClick(final View v) {
if(started || SystemClock.elapsedRealtime()-lastClickEndTime <1000 ){
Log.d(OneClickListener.class.toString(), "Rejected double click, " + new Date().toString() );
return;
}
Log.d(OneClickListener.class.toString(), "One click, start: " + new Date().toString() );
try{
started = true;
oneClick(v);
}finally{
started = false;
lastClickEndTime = SystemClock.elapsedRealtime();
Log.d(OneClickListener.class.toString(), "One click, end: " + new Date().toString() );
}
}
abstract protected void oneClick(View v);
}
Below code will prevent user to click multiple times within a fractions of seconds and allow only after 3 seconds.
private long lastClickTime = 0;
View.OnClickListener buttonHandler = new View.OnClickListener() {
public void onClick(View v) {
// preventing double, using threshold of 3000 ms
if (SystemClock.elapsedRealtime() - lastClickTime < 3000){
return;
}
lastClickTime = SystemClock.elapsedRealtime();
}
}
The actual solution to this problem is to use setEnabled(false) which greys out the button, and setClickable(false) which makes it so the second click can not be received I have tested this and it seem to be very effective.
My solution is
package com.shuai.view;
import android.os.SystemClock;
import android.view.View;
/**
* ????????????2?(???)???onClick???2?(???)???
* ????2?click???????????
*
* ??????{@link #onSingleClick}??click??
*/
public abstract class OnSingleClickListener implements View.OnClickListener {
/**
* ??click???????
*/
private static final long MIN_CLICK_INTERVAL=600;
/**
* ??click???
*/
private long mLastClickTime;
/**
* click????
* @param v The view that was clicked.
*/
public abstract void onSingleClick(View v);
@Override
public final void onClick(View v) {
long currentClickTime=SystemClock.uptimeMillis();
long elapsedTime=currentClickTime-mLastClickTime;
//???2???,????3??,??mLastClickTime???????click???
mLastClickTime=currentClickTime;
if(elapsedTime<=MIN_CLICK_INTERVAL)
return;
onSingleClick(v);
}
}
Usage is similar as OnClickListener but override onSingleClick() instead:
mTextView.setOnClickListener(new OnSingleClickListener() {
@Override
public void onSingleClick(View v) {
if (DEBUG)
Log.i("TAG", "onclick!");
}
};
I know it's an old question, but I share the best solution I found to solve this common problem
btnSomeButton.setOnClickListener(new View.OnClickListener() {
@Override
public void onClick(View view) {
// Prevent Two Click
Utils.preventTwoClick(view);
// Do magic
}
});
And in another file,like Utils.java
/**
* Método para prevenir doble click en un elemento
* @param view
*/
public static void preventTwoClick(final View view){
view.setEnabled(false);
view.postDelayed(new Runnable() {
public void run() {
view.setEnabled(true);
}
}, 500);
}
My solution (Kotlin):
class OnDebouncedClickListener(private val delayInMilliSeconds: Long, val action: () -> Unit) : View.OnClickListener {
var enable = true
override fun onClick(view: View?) {
if (enable) {
enable = false
view?.postDelayed(delayInMilliSeconds) { enable = true }
action()
}
}
}
fun View.setOnDebouncedClickListener(delayInMilliSeconds: Long = 500, action: () -> Unit) {
val onDebouncedClickListener = OnDebouncedClickListener(delayInMilliSeconds, action)
setOnClickListener(onDebouncedClickListener)
}
Use :
button.apply {
setOnDebouncedClickListener {
//your action on click
}
}
Setting Clickable to false does not work on the first double click but subsequent double clicks are blocked. It is as though the loading click delegate the first time is slower and the second click is captured before the first completes.
Button button = contentView.FindViewById<Button>(Resource.Id.buttonIssue);
button.Clickable = false;
IssueSelectedItems();
button.Clickable = true;
Only 2 step , and you can use it everywhere in your application.
Step1. create a singleton to manager [avoiding multiple click]
package com.im.av.mediator;
import android.os.SystemClock;
import java.util.HashMap;
/**
* Created by ShuHeng on 16/6/1.
*/
public class ClickManager {
private HashMap<Integer,Long> laskClickTimeMap=new HashMap<Integer,Long>();
public volatile static ClickManager mInstance =null;
public static ClickManager getInstance(){
if (mInstance == null) {
synchronized(ClickManager.class) {
if (mInstance == null) {
mInstance = new ClickManager();
}
}
}
return mInstance;
}
public boolean isClickable1s(Integer key){
Long keyLong = laskClickTimeMap.get(key);
if(keyLong==null){
laskClickTimeMap.put(key,SystemClock.elapsedRealtime());
return true;
}else{
if (SystemClock.elapsedRealtime() - keyLong.longValue() < 1000){
return false;
}else{
laskClickTimeMap.put(key,new Long(SystemClock.elapsedRealtime()));
return true;
}
}
}
}
Step2. add one line to avoid multiple click.
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
int id = v.getId();
if (id == R.id.iv_back) {
if(!ClickManager.getInstance().isClickable1s(R.id.iv_back))return;
//do something
} else if (id == R.id.iv_light) {
if(!ClickManager.getInstance().isClickable1s(R.id.iv_light))return;
//do something
} else if (id == R.id.iv_camerarotate) {
if(!ClickManager.getInstance().isClickable1s(R.id.iv_camerarotate))return;
//do something
} else if (id == R.id.btn_delete_last_clip) {
if(!ClickManager.getInstance().isClickable1s(R.id.btn_delete_last_clip))return;
//do something
} else if (id == R.id.iv_ok) {
if(!ClickManager.getInstance().isClickable1s(R.id.iv_ok))return;
//do something
}
}
you can also use rx bindings by jake wharton to accomplish this. here is a sample that pads 2 seconds between successive clicks:
RxView.clicks(btnSave)
.throttleFirst(2000, TimeUnit.MILLISECONDS, AndroidSchedulers.mainThread())
.subscribe(new Consumer<Object>() {
@Override
public void accept( Object v) throws Exception {
//handle onclick event here
});
//note: ignore the Object v in this case and i think always.
I fix this problem using two clases, one similar to @jinshiyi11 answer's and the anoter is based on explicit click, in this you can click a button only once time, if you want another click you have to indicate it explicitly.
/**
* Listener que sólo permite hacer click una vez, para poder hacer click
* posteriormente se necesita indicar explicitamente.
*
* @author iberck
*/
public abstract class OnExplicitClickListener implements View.OnClickListener {
// you can perform a click only once time
private boolean canClick = true;
@Override
public synchronized void onClick(View v) {
if (canClick) {
canClick = false;
onOneClick(v);
}
}
public abstract void onOneClick(View v);
public synchronized void enableClick() {
canClick = true;
}
public synchronized void disableClick() {
canClick = false;
}
}
Example of use:
OnExplicitClickListener clickListener = new OnExplicitClickListener() {
public void onOneClick(View v) {
Log.d("example", "explicit click");
...
clickListener.enableClick();
}
}
button.setOnClickListener(clickListener);
There is a native debounce click listener in Java
view.setOnClickListener(new DebouncedOnClickListener(1000) { //in milisecs
@Override
public void onDebouncedClick(View v) {
//action
}
});
Try this Kotlin extension function :
private var lastClickTime = 0L
fun View.click(action: () -> Unit) {
setOnClickListener {
if (SystemClock.elapsedRealtime() - lastClickTime < 600L)
return@setOnClickListener
lastClickTime = SystemClock.elapsedRealtime()
action()
}
}
It prevent also clicking in various parts of the app at the same time.
If you don't want (or can not) use boolean flags or override onClickListener, you also can try to declare your activity with android:launchMode="singleTop" in AndroidManifest.xml.
We could use the button just synchronized like:
@Override
public void onClick(final View view) {
synchronized (view) {
view.setEnabled(false);
switch (view.getId()) {
case R.id.id1:
...
break;
case R.id.id2:
...
break;
...
}
new Handler().postDelayed(new Runnable() {
@Override
public void run() {
view.setEnabled(true);
}
}, 1000);
}
}
Good Luck)
Kotlin extension that allows for concise inline code & variable double click wait times
fun View.setDoubleClickListener(listener: View.OnClickListener, waitMillis : Long = 1000) {
var lastClickTime = 0L
setOnClickListener { view ->
if (System.currentTimeMillis() > lastClickTime + waitMillis) {
listener.onClick(view)
lastClickTime = System.currentTimeMillis()
}
}
}
Usage:
anyView.setNoDoubleClickListener(View.OnClickListener { v ->
// do stuff
})
Or
anyView.setNoDoubleClickListener(View.OnClickListener { v ->
// do stuff
}, 1500)
Source: Stackoverflow.com