避免按钮多次快速点击

Question

我的应用有问题，如果用户快速多次点击按钮，那么即使我按下按钮的对话框消失，也会生成多个事件

通过在单击按钮时将布尔变量设置为标志，我知道了一种解决方案，因此可以阻止将来的点击，直到关闭对话框。但是我有很多按钮，每次按钮都必须这样做，因为每个按钮似乎都是一种矫枉过正。在Android（或者更智能的解决方案）中，没有其他方法只允许每个按钮点击生成事件动作吗？

更糟糕的是，即使处理第一个操作，多个快速点击似乎也会生成多个事件操作，因此如果我想在第一个单击处理方法中禁用该按钮，则队列中已存在已存在的事件操作等待处理！

请帮忙 感谢

Answer 1

这是我最近写的'debounced'onClick监听器。 您可以告诉它点击之间的最小可接受毫秒数。 在onDebouncedClick而不是onClick

中实施您的逻辑

import android.os.SystemClock;
import android.view.View;

import java.util.Map;
import java.util.WeakHashMap;

/**
 * A Debounced OnClickListener
 * Rejects clicks that are too close together in time.
 * This class is safe to use as an OnClickListener for multiple views, and will debounce each one separately.
 */
public abstract class DebouncedOnClickListener implements View.OnClickListener {

    private final long minimumInterval;
    private Map<View, Long> lastClickMap;

    /**
     * Implement this in your subclass instead of onClick
     * @param v The view that was clicked
     */
    public abstract void onDebouncedClick(View v);

    /**
     * The one and only constructor
     * @param minimumIntervalMsec The minimum allowed time between clicks - any click sooner than this after a previous click will be rejected
     */
    public DebouncedOnClickListener(long minimumIntervalMsec) {
        this.minimumInterval = minimumIntervalMsec;
        this.lastClickMap = new WeakHashMap<View, Long>();
    }

    @Override public void onClick(View clickedView) {
        Long previousClickTimestamp = lastClickMap.get(clickedView);
        long currentTimestamp = SystemClock.uptimeMillis();

        lastClickMap.put(clickedView, currentTimestamp);
        if(previousClickTimestamp == null || Math.abs(currentTimestamp - previousClickTimestamp.longValue()) > minimumInterval) {
            onDebouncedClick(clickedView);
        }
    }
}

Answer 2

使用RxBinding可以轻松完成。这是一个例子：

RxView.clicks(view).throttleFirst(500, TimeUnit.MILLISECONDS).subscribe(empty -> {
            // action on click
        });

在build.gradle中添加以下行以添加RxBinding依赖项：

compile 'com.jakewharton.rxbinding:rxbinding:0.3.0'

Answer 3

这是我接受的答案的版本。它非常相似，但不会尝试将视图存储在地图中，我认为这不是一个好主意。 它还添加了一个在许多情况下都很有用的包装方法。

/**
 * Implementation of {@link OnClickListener} that ignores subsequent clicks that happen too quickly after the first one.<br/>
 * To use this class, implement {@link #onSingleClick(View)} instead of {@link OnClickListener#onClick(View)}.
 */
public abstract class OnSingleClickListener implements OnClickListener {
    private static final String TAG = OnSingleClickListener.class.getSimpleName();

    private static final long MIN_DELAY_MS = 500;

    private long mLastClickTime;

    @Override
    public final void onClick(View v) {
        long lastClickTime = mLastClickTime;
        long now = System.currentTimeMillis();
        mLastClickTime = now;
        if (now - lastClickTime < MIN_DELAY_MS) {
            // Too fast: ignore
            if (Config.LOGD) Log.d(TAG, "onClick Clicked too quickly: ignored");
        } else {
            // Register the click
            onSingleClick(v);
        }
    }

    /**
     * Called when a view has been clicked.
     * 
     * @param v The view that was clicked.
     */
    public abstract void onSingleClick(View v);

    /**
     * Wraps an {@link OnClickListener} into an {@link OnSingleClickListener}.<br/>
     * The argument's {@link OnClickListener#onClick(View)} method will be called when a single click is registered.
     * 
     * @param onClickListener The listener to wrap.
     * @return the wrapped listener.
     */
    public static OnClickListener wrap(final OnClickListener onClickListener) {
        return new OnSingleClickListener() {
            @Override
            public void onSingleClick(View v) {
                onClickListener.onClick(v);
            }
        };
    }
}

Answer 4

您可以使用此项目：https://github.com/fengdai/clickguard 使用单个语句解决此问题：

ClickGuard.guard(button);

更新：不再推荐使用此库。我更喜欢尼基塔的解决方案。改为使用RxBinding。

Answer 5

只需快速了解GreyBeardedGeek解决方案。更改if子句并添加Math.abs函数。设置如下：

  if(previousClickTimestamp == null || (Math.abs(currentTimestamp - previousClickTimestamp.longValue()) > minimumInterval)) {
        onDebouncedClick(clickedView);
    }

用户可以更改Android设备上的时间并将其置于过去，因此如果没有这个，可能会导致错误。

PS：没有足够的分数来评论你的解决方案，所以我只是提出另一个答案。

Answer 6

因此，此答案由ButterKnife库提供。

package butterknife.internal;

import android.view.View;

/**
 * A {@linkplain View.OnClickListener click listener} that debounces multiple clicks posted in the
 * same frame. A click on one button disables all buttons for that frame.
 */
public abstract class DebouncingOnClickListener implements View.OnClickListener {
  static boolean enabled = true;

  private static final Runnable ENABLE_AGAIN = () -> enabled = true;

  @Override public final void onClick(View v) {
    if (enabled) {
      enabled = false;
      v.post(ENABLE_AGAIN);
      doClick(v);
    }
  }

  public abstract void doClick(View v);
}

此方法仅在处理完先前的点击后处理点击，并注意避免在框架中多次点击。

Answer 7

这是一个简单的例子：

public abstract class SingleClickListener implements View.OnClickListener {
    private static final long THRESHOLD_MILLIS = 1000L;
    private long lastClickMillis;

    @Override public void onClick(View v) {
        long now = SystemClock.elapsedRealtime();
        if (now - lastClickMillis > THRESHOLD_MILLIS) {
            onClicked(v);
        }
        lastClickMillis = now;
    }

    public abstract void onClicked(View v);
}

Answer 8

使用RxJava的类似解决方案

import android.view.View;

import java.util.concurrent.TimeUnit;

import rx.android.schedulers.AndroidSchedulers;
import rx.functions.Action1;
import rx.subjects.PublishSubject;

public abstract class SingleClickListener implements View.OnClickListener {
    private static final long THRESHOLD_MILLIS = 600L;
    private final PublishSubject<View> viewPublishSubject = PublishSubject.<View>create();

    public SingleClickListener() {
        viewPublishSubject.throttleFirst(THRESHOLD_MILLIS, TimeUnit.MILLISECONDS)
                .observeOn(AndroidSchedulers.mainThread())
                .subscribe(new Action1<View>() {
                    @Override
                    public void call(View view) {
                        onClicked(view);
                    }
                });
    }

    @Override
    public void onClick(View v) {
        viewPublishSubject.onNext(v);
    }

    public abstract void onClicked(View v);
}

Answer 9

这可以用于任何事件，而不仅仅是点击。即使它是一系列快速事件（如rx debounce）的一部分，它也将发布最后一个事件。

class Debouncer(timeout: Long, unit: TimeUnit, fn: () -> Unit) {

    private val timeoutMillis = unit.toMillis(timeout)

    private var lastSpamMillis = 0L

    private val handler = Handler()

    private val runnable = Runnable {
        fn()
    }

    fun spam() {
        if (SystemClock.uptimeMillis() - lastSpamMillis < timeoutMillis) {
            handler.removeCallbacks(runnable)
        }
        handler.postDelayed(runnable, timeoutMillis)
        lastSpamMillis = SystemClock.uptimeMillis()
    }
}


// example
view.addOnClickListener.setOnClickListener(object: View.OnClickListener {
    val debouncer = Debouncer(1, TimeUnit.SECONDS, {
        showSomething()
    })

    override fun onClick(v: View?) {
        debouncer.spam()
    }
})

1）在侦听器的一个字段中构造Debouncer但在回调函数之外，配置了超时和你想要限制的回调fn。

2）在监听器的回调函数中调用Debouncer的垃圾邮件方法。

Answer 10

您可以为此目的使用Rxbinding3。只需在build.gradle中添加此依赖项

build.gradle

implementation 'com.jakewharton.rxbinding3:rxbinding:3.1.0'

然后在您的活动或片段中，使用以下代码

your_button.clicks().throttleFirst(10000, TimeUnit.MILLISECONDS).subscribe {
    // your action
}

Answer 11

来自Signal App的基于Handler的调节器。

import android.os.Handler;
import android.support.annotation.NonNull;

/**
 * A class that will throttle the number of runnables executed to be at most once every specified
 * interval.
 *
 * Useful for performing actions in response to rapid user input where you want to take action on
 * the initial input but prevent follow-up spam.
 *
 * This is different from a Debouncer in that it will run the first runnable immediately
 * instead of waiting for input to die down.
 *
 * See http://rxmarbles.com/#throttle
 */
public final class Throttler {

    private static final int WHAT = 8675309;

    private final Handler handler;
    private final long    thresholdMs;

    /**
     * @param thresholdMs Only one runnable will be executed via {@link #publish} every
     *                  {@code thresholdMs} milliseconds.
     */
    public Throttler(long thresholdMs) {
        this.handler     = new Handler();
        this.thresholdMs = thresholdMs;
    }

    public void publish(@NonNull Runnable runnable) {
        if (handler.hasMessages(WHAT)) {
            return;
        }

        runnable.run();
        handler.sendMessageDelayed(handler.obtainMessage(WHAT), thresholdMs);
    }

    public void clear() {
        handler.removeCallbacksAndMessages(null);
    }
}

用法示例：

throttler.publish(() -> Log.d("TAG", "Example"));

在OnClickListener中的用法示例：

view.setOnClickListener(v -> throttler.publish(() -> Log.d("TAG", "Example")));

Kt用法示例：

view.setOnClickListener {
    throttler.publish {
        Log.d("TAG", "Example")
    }
}

或带有扩展名：

fun View.setThrottledOnClickListener(throttler: Throttler, function: () -> Unit) {
    throttler.publish(function)
}

然后是示例用法：

view.setThrottledOnClickListener(throttler) {
    Log.d("TAG", "Example")
}

Answer 12

我将这个类与数据绑定一起使用。效果很好。

/**
 * This class will prevent multiple clicks being dispatched.
 */
class OneClickListener(private val onClickListener: View.OnClickListener) : View.OnClickListener {
    private var lastTime: Long = 0

    override fun onClick(v: View?) {
        val current = System.currentTimeMillis()
        if ((current - lastTime) > 500) {
            onClickListener.onClick(v)
            lastTime = current
        }
    }

    companion object {
        @JvmStatic @BindingAdapter("oneClick")
        fun setOnClickListener(theze: View, f: View.OnClickListener?) {
            when (f) {
                null -> theze.setOnClickListener(null)
                else -> theze.setOnClickListener(OneClickListener(f))
            }
        }
    }
}

我的布局看起来像这样

<TextView
        app:layout_constraintTop_toBottomOf="@id/bla"
        app:layout_constraintLeft_toLeftOf="parent"
        app:layout_constraintRight_toRightOf="parent"
        android:gravity="center"
        android:textSize="18sp"
        app:oneClick="@{viewModel::myHandler}" />

Answer 13

基于 @GreyBeardedGeek answer ，

• 在debounceClick_last_Timestamp上创建ids.xml进行标记 上次点击时间戳。

• 将此代码块添加到BaseActivity

  protected void debounceClick(View clickedView, DebouncedClick callback){
      debounceClick(clickedView,1000,callback);
  }
  
  protected void debounceClick(View clickedView,long minimumInterval, DebouncedClick callback){
      Long previousClickTimestamp = (Long) clickedView.getTag(R.id.debounceClick_last_Timestamp);
      long currentTimestamp = SystemClock.uptimeMillis();
      clickedView.setTag(R.id.debounceClick_last_Timestamp, currentTimestamp);
      if(previousClickTimestamp == null 
            || Math.abs(currentTimestamp - previousClickTimestamp) > minimumInterval) {
          callback.onClick(clickedView);
      }
  }
  
  public interface DebouncedClick{
      void onClick(View view);
  }
  

• 用法：

  view.setOnClickListener(new View.OnClickListener() {
      @Override
      public void onClick(View v) {
          debounceClick(v, 3000, new DebouncedClick() {
              @Override
              public void onClick(View view) {
                  doStuff(view); // Put your's click logic on doStuff function
              }
          });
      }
  });
  

• 使用lambda

  view.setOnClickListener(v -> debounceClick(v, 3000, this::doStuff));
  

Answer 14

在此处放置一个示例

SideBar

---

view.safeClick { doSomething() }

Answer 15

这是一个非常简单的解决方案，可以与lambda一起使用：

view.setOnClickListener(new DebounceClickListener(v -> this::doSomething));

以下是可复制/粘贴的代码段：

public class DebounceClickListener implements View.OnClickListener {

    private static final long DEBOUNCE_INTERVAL_DEFAULT = 500;
    private long debounceInterval;
    private long lastClickTime;
    private View.OnClickListener clickListener;

    public DebounceClickListener(final View.OnClickListener clickListener) {
        this(clickListener, DEBOUNCE_INTERVAL_DEFAULT);
    }

    public DebounceClickListener(final View.OnClickListener clickListener, final long debounceInterval) {
        this.clickListener = clickListener;
        this.debounceInterval = debounceInterval;
    }

    @Override
    public void onClick(final View v) {
        if ((SystemClock.elapsedRealtime() - lastClickTime) < debounceInterval) {
            return;
        }
        lastClickTime = SystemClock.elapsedRealtime();
        clickListener.onClick(v);
    }
}

享受！

Answer 16

我们可以在没有任何库的情况下做到这一点。只需创建一个扩展功能：

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()
        }
    })
}

使用以下代码查看onClick：

buttonShare.clickWithDebounce { 
   // Do anything you want
}

Answer 17

我的解决方案，当我们从片段和活动中退出（破坏）时，需要调用<div className="row"> <div className="col-md-4"></div> <div className="col-md-4"></div> <div className="col-md-4"></div> <div className="col-md-4"></div> <div className="col-md-4"></div> <div className="col-md-4"></div> <div className="col-md-4"></div> </div> ：

removeall

Answer 18

我想说的最简单的方法是使用KProgressHUD之类的“加载”库。

https://github.com/Kaopiz/KProgressHUD

onClick方法的第一件事是调用加载动画，该动画会立即阻止所有UI，直到开发人员决定释放它为止。

因此，您可以在onClick动作中使用它（使用Butterknife，但显然可以使用任何方法）：

此外，不要忘记单击后禁用按钮。

@OnClick(R.id.button)
void didClickOnButton() {
    startHUDSpinner();
    button.setEnabled(false);
    doAction();
}

然后：

public void startHUDSpinner() {
    stopHUDSpinner();
    currentHUDSpinner = KProgressHUD.create(this)
            .setStyle(KProgressHUD.Style.SPIN_INDETERMINATE)
            .setLabel(getString(R.string.loading_message_text))
            .setCancellable(false)
            .setAnimationSpeed(3)
            .setDimAmount(0.5f)
            .show();
}

public void stopHUDSpinner() {
    if (currentHUDSpinner != null && currentHUDSpinner.isShowing()) {
        currentHUDSpinner.dismiss();
    }
    currentHUDSpinner = null;
}

如果愿意，可以在doAction（）方法中使用stopHUDSpinner方法：

private void doAction(){ 
   // some action
   stopHUDSpinner()
}

根据您的应用逻辑重新启用按钮：      button.setEnabled（true）;

Answer 19

处理这种情况的更重要的方法是将Throttling运算符（Throttle First）与RxJava2一起使用。  在Kotlin中实现这一目标的步骤：

1）。依赖关系：-在build.gradle应用级文件中添加rxjava2依赖关系。

implementation 'io.reactivex.rxjava2:rxandroid:2.1.1'
implementation 'io.reactivex.rxjava2:rxjava:2.2.10'

2）。构造一个实现View.OnClickListener的抽象类，并包含节流优先运算符来处理视图的OnClick（）方法。代码段为：

import android.util.Log
import android.view.View
import io.reactivex.android.schedulers.AndroidSchedulers
import io.reactivex.subjects.PublishSubject
import java.util.concurrent.TimeUnit

abstract class SingleClickListener : View.OnClickListener {
   private val publishSubject: PublishSubject<View> = PublishSubject.create()
   private val THRESHOLD_MILLIS: Long = 600L

   abstract fun onClicked(v: View)

   override fun onClick(p0: View?) {
       if (p0 != null) {
           Log.d("Tag", "Clicked occurred")
           publishSubject.onNext(p0)
       }
   }

   init {
       publishSubject.throttleFirst(THRESHOLD_MILLIS, TimeUnit.MILLISECONDS)
               .observeOn(AndroidSchedulers.mainThread())
               .subscribe { v -> onClicked(v) }
   }
}

3）。在活动中单击视图时实现此SingleClickListener类。可以通过以下方式实现：

override fun onCreate(savedInstanceState: Bundle?)  {
   super.onCreate(savedInstanceState)
   setContentView(R.layout.activity_main)

   val singleClickListener = object : SingleClickListener(){
      override fun onClicked(v: View) {
       // operation on click of xm_view_id
      }
  }
xm_viewl_id.setOnClickListener(singleClickListener)
}

在应用程序中执行上述步骤可以简单地避免多次单击视图直到600mS。 编码愉快！

Answer 20

这就像这样解决了

Observable<Object> tapEventEmitter = _rxBus.toObserverable().share();
Observable<Object> debouncedEventEmitter = tapEventEmitter.debounce(1, TimeUnit.SECONDS);
Observable<List<Object>> debouncedBufferEmitter = tapEventEmitter.buffer(debouncedEventEmitter);

debouncedBufferEmitter.buffer(debouncedEventEmitter)
    .observeOn(AndroidSchedulers.mainThread())
    .subscribe(new Action1<List<Object>>() {
      @Override
      public void call(List<Object> taps) {
        _showTapCount(taps.size());
      }
    });