Android 连续多次点击事件回调接口。Interface definition for a callback to be invoked when a view is multiple clicked. 继承自 View.OnClickListener，当连续多次点击时被回调。点击之间的间隔必须小于给定值，才能被识别为一次连续的点击；当点击之间的间隔超时后，丢弃之前记录的点击，重新开始记录。 #tags: android-view

OnMultipleClickListener.java

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

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

// 源码基于 http://stackoverflow.com/questions/16534369/avoid-button-multiple-rapid-clicks
public abstract class OnMultipleClickListener implements View.OnClickListener {
    private static final int DEFAULT_MAX_INTERVAL = 1000; // ms
    private int mClickIndex;
    private int mContinuousClickCount;
    private final long mMaxInterval;
    private Map<View, Long> mClickMap;

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

    public OnMultipleClickListener(int multiple) {
        this(multiple, DEFAULT_MAX_INTERVAL);
    }

    /**
     * Constructor
     * @param maxIntervalMsec The max allowed time between clicks, or else discard all previous clicks.
     */
    public OnMultipleClickListener(int multiple, long maxIntervalMsec) {
        mClickIndex = 0;
        mContinuousClickCount = multiple;
        mMaxInterval = maxIntervalMsec;
        mClickMap = new WeakHashMap<View, Long>();
    }

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

        mClickMap.put(clickedView, currentTimestamp);

        if (previousClickTimestamp == null) {
            // first click
            mClickIndex = 1;
        } else {
            // other click
            if ((currentTimestamp - previousClickTimestamp.longValue()) < mMaxInterval) {
                ++mClickIndex;
                if (mClickIndex >= mContinuousClickCount) {
                    mClickIndex = 0;
                    mClickMap.clear();
                    onMultipleClick(clickedView);
                }
            } else {
                // timeout
                mClickIndex = 1;
            }
        }
    }
}

OnMultipleClickListener_Usage.java

  // 3 click, 1000 ms
  // 连续 3 次点击，并且点击之间的间隔不能超过 1000ms，才能被回调。
  view.setOnClickListener(new OnMultipleClickListener(3, 1000) {
      @Override
      public void onMultipleClick(View v) {
        // do some stuff when multiple clicked.
      }
  });