在安卓系统中防止双击按钮的最佳方法是什么?
当前回答
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);
}
其他回答
在我的情况下,我使用按钮视图,它的点击速度太快了。只需禁用点击,并在几秒钟后再次启用它…
基本上我做了一个包装类,包装你的Views onClickListener。如果您愿意,还可以设置自定义延迟。
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);
}
}
简单地调用它:
mMyButton.setOnClickListener(new OnClickRateLimitedDecoratedListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
doSomething();
}
}));
或者提供你自己的延迟:
mMyButton.setOnClickListener(new OnClickRateLimitedDecoratedListener(new View.OnClickListener() {
@Override
public void onClick(View v) {
doSomething();
}
},1000));
更新:以上方式有点过时,现在RxJava是如此流行。正如其他人所提到的,在android中我们可以使用油门来减慢点击。这里有一个例子:
RxView.clicks(myButton)
.throttleFirst(2000, TimeUnit.MILLISECONDS, AndroidSchedulers.mainThread())
.subscribe {
Log.d("i got delayed clicked")
}
}
实现'com. jake沃顿。rxbinding:2.0.0'
如果有人还在寻找一个简短的答案,你可以使用下面的代码
private static long mLastClickTime = 0;
if (SystemClock.elapsedRealtime() - mLastClickTime < 1000) { // 1000 = 1second
return;
}
mLastClickTime = SystemClock.elapsedRealtime();
当用户在1秒内单击View时,这段代码将进入if语句,然后返回;将被启动,而进一步的代码将不会被启动。
我的解决方案(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)
}
使用:
button.apply {
setOnDebouncedClickListener {
//your action on click
}
}
试试这个Kotlin扩展函数:
private var lastClickTime = 0L
fun View.click(action: () -> Unit) {
setOnClickListener {
if (SystemClock.elapsedRealtime() - lastClickTime < 600L)
return@setOnClickListener
lastClickTime = SystemClock.elapsedRealtime()
action()
}
}
它还防止在同一时间点击应用程序的各个部分。
具有Kotlin扩展功能:
fun View.onSingleClick(action: (v: View) -> Unit) {
setOnClickListener(object : View.OnClickListener {
override fun onClick(v: View) {
isClickable = false
action(v)
postDelayed({ isClickable = true }, 700)
}
})
}
用法:
button.onSingleClick { myAction() }
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