Java MotionEvent.getEventTime方法代碼示例

import android.view.MotionEvent; //導入方法依賴的package包/類
/**
 * <p>Calculates the pinch velocity for the last <code>timeWindow</code> milliseconds.</p>
 * @param event
 * @param pointerA id of pointer A
 * @param pointerB id of pointer B
 * @param timeWindow
 * @return spacing between both pointers
 */
public static final float pinchVelocity(MotionEvent event, int pointerA, int pointerB, long timeWindow) {
	int indexA = event.findPointerIndex(pointerA);
	int indexB = event.findPointerIndex(pointerB);
	long eventTime = event.getEventTime();
	long timeDelta = 0;
	float previousSpacing = spacingByIndex(event, indexA, indexB);
	float scale = 1;
	for(int i = 0, n = event.getHistorySize(); i < n && timeDelta < timeWindow; i++) {
		int index = (n - 1) - i;
		float x = event.getHistoricalX(indexA, index) - event.getHistoricalX(indexB, index);
		float y = event.getHistoricalY(indexA, index) - event.getHistoricalY(indexB, index);
		float spacing = (float) Math.sqrt(x * x + y * y);
		scale *= previousSpacing / spacing;
		previousSpacing = spacing;
		timeDelta = eventTime - event.getHistoricalEventTime(index);
	}
	return (float) Math.pow(Math.pow(scale, 1d / timeWindow), 1000d);
}
 

import android.view.MotionEvent; //導入方法依賴的package包/類
private boolean onTouch(View v, MotionEvent event) {
    if (parent.isEmpty()) {
        return false;
    }

    animator.cancel();

    switch (event.getAction()) {
        case MotionEvent.ACTION_DOWN:
            initialTouchX = event.getRawX();
            initialTouchY = event.getRawY();
            startTimeMS = event.getEventTime();
            onMoveStart(v);
            v.setPressed(true);
            return true;
        case MotionEvent.ACTION_MOVE:
            animator.cancel();
            onMove(v, event.getRawX() - initialTouchX, event.getRawY() - initialTouchY);
            return true;
        case MotionEvent.ACTION_UP:
            v.setPressed(false);
            onMoveEnd(v);
            final long downTimeMS = event.getEventTime() - startTimeMS;
            final float halfButtonSize = Math.min(v.getHeight(), v.getWidth()) / 2f;
            final boolean wasClicked = downTimeMS < CLICK_MAX_DURATION_MS
                    && ViewUtil.distance(initialTouchX, initialTouchY, event.getRawX(), event.getRawY()) < halfButtonSize;
            if (wasClicked) {
                v.performClick();
            }
            return true;
        default:
            return true;
    }
}
 

import android.view.MotionEvent; //導入方法依賴的package包/類
/**
 * Compares if {@code event} on {@code touchedView} is a continuation of the event stream
 * tracked by this PendingDrag.  This includes whether the event stream has had sufficient
 * regular updates, at least more often than {@link #MAX_MOTION_EVENT_MILLISECONDS_DELTA}
 * (in an effort to disregard it from dropped previous streams with dropped
 * {@link MotionEvent#ACTION_UP} and {@link MotionEvent#ACTION_CANCEL}).  If that threshold
 * is exceeded (for matching view and pointer id), the PendingDrag will no longer be alive
 * ({@link #isAlive()}, and not match any future events.
 * <p/>
 * If the event is a match and alive, it will pass the event through a {@link GestureDetector}
 * to determine if the event triggers a click (or other interesting gestures in the future).
 * Check {@link #isClick()} to determine whether a click was detected.
 * <p/>
 * This method should only be called from {@link Dragger#onTouchBlockImpl}.
 *
 * @param event The event to compare to.
 * @param touchedView The view that received the touch event.
 * @return Whether the event was a match and the drag is still alive.
 */
boolean isMatchAndProcessed(MotionEvent event, BlockView touchedView) {
    if (!mAlive) {
        return false;
    }

    final int pointerId = event.getPointerId(event.getActionIndex());
    long curEventTime = event.getEventTime();
    long deltaMs = curEventTime - mLatestEventTime;
    if (deltaMs < MAX_MOTION_EVENT_MILLISECONDS_DELTA) {
        if (pointerId == mPointerId && touchedView == mTouchedView) {
            mLatestEventTime = curEventTime;
            mGestureDetector.onTouchEvent(event);
            return true;
        }
    } else {
        mAlive = false; // Exceeded threshold and expired.
    }

    return false;  // Not a pointer & view match or died.
}
 

import android.view.MotionEvent; //導入方法依賴的package包/類
protected void updateStateByEvent(MotionEvent curr){
	final MotionEvent prev = mPrevEvent;
	
	// Reset mCurrEvent
    if (mCurrEvent != null) {
        mCurrEvent.recycle();
        mCurrEvent = null;
    }
    mCurrEvent = MotionEvent.obtain(curr);
    
    
    // Delta time
    mTimeDelta = curr.getEventTime() - prev.getEventTime();

    // Pressure
    mCurrPressure = curr.getPressure(curr.getActionIndex());
    mPrevPressure = prev.getPressure(prev.getActionIndex());
}
 

import android.view.MotionEvent; //導入方法依賴的package包/類
protected void updateStateByEvent(MotionEvent curr) {
    final MotionEvent prev = mPrevEvent;

    // Reset mCurrEvent
    if (mCurrEvent != null) {
        mCurrEvent.recycle();
        mCurrEvent = null;
    }
    mCurrEvent = MotionEvent.obtain(curr);


    // Delta time
    mTimeDelta = curr.getEventTime() - prev.getEventTime();

    // Pressure
    mCurrPressure = curr.getPressure(curr.getActionIndex());
    mPrevPressure = prev.getPressure(prev.getActionIndex());
}
 

import android.view.MotionEvent; //導入方法依賴的package包/類
/** Handles the touch event */
public boolean onTouchEvent(MotionEvent event) {
  switch (event.getAction()) {
    case MotionEvent.ACTION_DOWN:
      mIsCapturingGesture = true;
      mIsClickCandidate = true;
      mActionDownTime = event.getEventTime();
      mActionDownX = event.getX();
      mActionDownY = event.getY();
      break;
    case MotionEvent.ACTION_MOVE:
      if (Math.abs(event.getX() - mActionDownX) > mSingleTapSlopPx ||
          Math.abs(event.getY() - mActionDownY) > mSingleTapSlopPx) {
        mIsClickCandidate = false;
      }
      break;
    case MotionEvent.ACTION_CANCEL:
      mIsCapturingGesture = false;
      mIsClickCandidate = false;
      break;
    case MotionEvent.ACTION_UP:
      mIsCapturingGesture = false;
      if (Math.abs(event.getX() - mActionDownX) > mSingleTapSlopPx ||
          Math.abs(event.getY() - mActionDownY) > mSingleTapSlopPx) {
        mIsClickCandidate = false;
      }
      if (mIsClickCandidate) {
        if (event.getEventTime() - mActionDownTime <= ViewConfiguration.getLongPressTimeout()) {
          if (mClickListener != null) {
            mClickListener.onClick();
          }
        } else {
          // long click, not handled
        }
      }
      mIsClickCandidate = false;
      break;
  }
  return true;
}
 

import android.view.MotionEvent; //導入方法依賴的package包/類
@Override
protected void onHoverExit(final MotionEvent event) {
    final Key lastKey = getLastHoverKey();
    if (DEBUG_HOVER) {
        Log.d(TAG, "onHoverExit: key=" + getHoverKeyOf(event) + " last=" + lastKey);
    }
    if (lastKey != null) {
        super.onHoverExitFrom(lastKey);
    }
    setLastHoverKey(null);
    final int actionIndex = event.getActionIndex();
    final int x = (int)event.getX(actionIndex);
    final int y = (int)event.getY(actionIndex);
    final int pointerId = event.getPointerId(actionIndex);
    final long eventTime = event.getEventTime();
    // A hover exit event at one pixel width or height area on the edges of more keys keyboard
    // are treated as closing.
    mMoreKeysKeyboardValidBounds.set(0, 0, mKeyboardView.getWidth(), mKeyboardView.getHeight());
    mMoreKeysKeyboardValidBounds.inset(CLOSING_INSET_IN_PIXEL, CLOSING_INSET_IN_PIXEL);
    if (mMoreKeysKeyboardValidBounds.contains(x, y)) {
        // Invoke {@link MoreKeysKeyboardView#onUpEvent(int,int,int,long)} as if this hover
        // exit event selects a key.
        mKeyboardView.onUpEvent(x, y, pointerId, eventTime);
        // TODO: Should fix this reference. This is a hack to clear the state of
        // {@link PointerTracker}.
        PointerTracker.dismissAllMoreKeysPanels();
        return;
    }
    // Close the more keys keyboard.
    // TODO: Should fix this reference. This is a hack to clear the state of
    // {@link PointerTracker}.
    PointerTracker.dismissAllMoreKeysPanels();
}
 

import android.view.MotionEvent; //導入方法依賴的package包/類
private void initSwipe(MotionEvent event, int ignore) {
	if (ignore < 0) {
		initialTime = event.getEventTime();
	}
	for (int i = 0, l = event.getPointerCount(); i < l; ++i) {
		if (i != ignore) {
			pointerId = event.getPointerId(i);
			initialX = event.getX(i);
			if (ignore > -1) {
				initialX -= deltaX;
			}
			break;
		}
	}
}
 

import android.view.MotionEvent; //導入方法依賴的package包/類
@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
    if (!isEnabled()) {
        return false;
    }
    final int action = event.getActionMasked();
    switch (action) {
        case MotionEvent.ACTION_DOWN: {
            removeAllCallbacks();
            mInputText.setVisibility(View.INVISIBLE);
            mLastDownOrMoveEventY = mLastDownEventY = event.getY();
            mLastDownEventTime = event.getEventTime();
            mIngonreMoveEvents = false;
            if (mLastDownEventY < mTopSelectionDividerTop) {
                if (mScrollState == OnScrollListener.SCROLL_STATE_IDLE) {
                    mPressedStateHelper.buttonPressDelayed(PressedStateHelper.BUTTON_DECREMENT);
                }
            } else if (mLastDownEventY > mBottomSelectionDividerBottom) {
                if (mScrollState == OnScrollListener.SCROLL_STATE_IDLE) {
                    mPressedStateHelper.buttonPressDelayed(PressedStateHelper.BUTTON_INCREMENT);
                }
            }
            getParent().requestDisallowInterceptTouchEvent(true);
            if (!mFlingScroller.isFinished()) {
                mFlingScroller.forceFinished(true);
                mAdjustScroller.forceFinished(true);
                onScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE);
            } else if (!mAdjustScroller.isFinished()) {
                mFlingScroller.forceFinished(true);
                mAdjustScroller.forceFinished(true);
            } else if (mLastDownEventY < mTopSelectionDividerTop) {
                postChangeCurrentByOneFromLongPress(false, ViewConfiguration.getLongPressTimeout());
            } else if (mLastDownEventY > mBottomSelectionDividerBottom) {
                postChangeCurrentByOneFromLongPress(true, ViewConfiguration.getLongPressTimeout());
            }
            return true;
        }
    }
    return false;
}
 

import android.view.MotionEvent; //導入方法依賴的package包/類
@Override
public void onTouchMove(MotionEvent event) {
    if (!hold && event.getEventTime() - event.getDownTime() >= holdDelay) {
        hold = true;
        onVibrate(100);
    }
}
 

import android.view.MotionEvent; //導入方法依賴的package包/類
@Override
protected void onHoverEnter(final MotionEvent event) {
    if (DEBUG_HOVER) {
        Log.d(TAG, "onHoverEnter: key=" + getHoverKeyOf(event));
    }
    super.onHoverEnter(event);
    final int actionIndex = event.getActionIndex();
    final int x = (int)event.getX(actionIndex);
    final int y = (int)event.getY(actionIndex);
    final int pointerId = event.getPointerId(actionIndex);
    final long eventTime = event.getEventTime();
    mKeyboardView.onDownEvent(x, y, pointerId, eventTime);
}
 

import android.view.MotionEvent; //導入方法依賴的package包/類
@Override
protected void onHoverMove(final MotionEvent event) {
    super.onHoverMove(event);
    final int actionIndex = event.getActionIndex();
    final int x = (int)event.getX(actionIndex);
    final int y = (int)event.getY(actionIndex);
    final int pointerId = event.getPointerId(actionIndex);
    final long eventTime = event.getEventTime();
    mKeyboardView.onMoveEvent(x, y, pointerId, eventTime);
}
 

import android.view.MotionEvent; //導入方法依賴的package包/類
@Override
public boolean onScroll(MotionEvent e1, MotionEvent e2, float distanceX, float distanceY) {
  boolean result = false;
  if (containsPan() &&
      (e2.getPointerId(e1.getActionIndex()) == e1.getPointerId(e1.getActionIndex()))) {
    if (panDownTime != e1.getEventTime()) {
      panDownTime = e1.getEventTime();
      scrolling = true;
      component.getInstance().fireEvent(
                                           component.getDomObject().getRef(), HighLevelGesture.PAN_START.toString(),
                                           createFireEventParam(e1, CUR_EVENT));
    } else {
      component.getInstance().fireEvent(
                                           component.getDomObject().getRef(), HighLevelGesture.PAN_MOVE.toString(),
                                           createFireEventParam(e2, CUR_EVENT));
    }
    result = true;
  }
  if (component.containsGesture(HighLevelGesture.SWIPE)) {
    if (swipeDownTime != e1.getEventTime()) {
      swipeDownTime = e1.getEventTime();
      List<Map<String, Object>> list = createFireEventParam(e2);
      Map<String, Object> param = list.get(list.size() - 1);
      if (Math.abs(distanceX) > Math.abs(distanceY)) {
        param.put(GestureInfo.DIRECTION, distanceX > 0 ? "left" : "right");
      } else {
        param.put(GestureInfo.DIRECTION, distanceY > 0 ? "up" : "down");
      }
      component.getInstance().fireEvent( component.getDomObject().getRef(),
                                           HighLevelGesture.SWIPE.toString(), param);
      result = true;
    }
  }
  return result;
}
 

import android.view.MotionEvent; //導入方法依賴的package包/類
private void captureDown(MotionEvent event, int pointerIndex) {
    final int pointerId = event.getPointerId(pointerIndex);
    final int i = findIndex(pointerId);

    if (i != UNTRACKED_POINTER) {
        mDownX[i] = event.getX(pointerIndex);
        mDownY[i] = event.getY(pointerIndex);
        mDownTime[i] = event.getEventTime();

    }
}
 

import android.view.MotionEvent; //導入方法依賴的package包/類
private void onActionUp(MotionEvent event)
{
    long duration = event.getEventTime() - event.getDownTime();
    if (duration < mClickTimeout
            && mTouchHelper.getDeltaXFrom(FTouchHelper.EVENT_DOWN) < mTouchSlop
            && mTouchHelper.getDeltaYFrom(FTouchHelper.EVENT_DOWN) < mTouchSlop)
    {
        toggleChecked(mAttrModel.isNeedToggleAnim(), true);
    } else
    {
        if (mTouchHelper.isNeedCosume())
        {
            final int left = mViewThumb.getLeft();
            final boolean checked = left >= ((getLeftNormal() + getLeftChecked()) / 2);

            boolean updatePosition = false;
            if (checked)
            {
                if (left != getLeftChecked())
                {
                    updatePosition = true;
                }
            } else
            {
                if (left != getLeftNormal())
                {
                    updatePosition = true;
                }
            }

            if (setChecked(checked, true, true))
            {
                // 更新狀態成功，內部會更新view的位置
            } else
            {
                if (updatePosition)
                {
                    updateViewByState(true);
                }
            }
        }
    }
}