android.view.MotionEvent.getPointerId()方法的使用及代码示例

x33g5p2x  于2022-01-24 转载在 其他  
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本文整理了Java中android.view.MotionEvent.getPointerId()方法的一些代码示例，展示了MotionEvent.getPointerId()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。MotionEvent.getPointerId()方法的具体详情如下：
包路径：android.view.MotionEvent
类名称：MotionEvent
方法名：getPointerId

MotionEvent.getPointerId介绍

暂无

代码示例

代码示例来源：origin: TonicArtos/StickyGridHeaders

private static int[] getPointerIds(MotionEvent e) {
  int n = e.getPointerCount();
  int[] r = new int[n];
  for (int i = 0; i < n; i++) {
    r[i] = e.getPointerId(i);
  }
  return r;
}

代码示例来源：origin: novoda/android-demos

private void updatePointerId(MotionEvent ev) {
  final int pointerIndex = (ev.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK) >> MotionEvent.ACTION_POINTER_INDEX_SHIFT;
  final int pointerId = ev.getPointerId(pointerIndex);
  if (pointerId == mActivePointerId) {
    // This was our active pointer going up. Choose a new
    // active pointer and adjust accordingly.
    final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
    mLastTouchX = ev.getX(newPointerIndex);
    mLastTouchY = ev.getY(newPointerIndex);
    mActivePointerId = ev.getPointerId(newPointerIndex);
  }
}

代码示例来源：origin: robolectric/robolectric

public void set(MotionEvent event) {
 pointerCount = event.getPointerCount();
 pointerIds = new int[pointerCount];
 x.clear();
 y.clear();
 for (int i = 0; i < pointerCount; i++) {
  pointerIds[i] = event.getPointerId(i);
  x.put(pointerIds[i], event.getX(i));
  y.put(pointerIds[i], event.getY(i));
 }
 activePointerId = event.getPointerId(0);
 eventTime = event.getEventTime();
}

代码示例来源：origin: stackoverflow.com

import android.view.MotionEvent;

public class EclairMotionEvent extends WrapMotionEvent {

  protected EclairMotionEvent(MotionEvent event) {
      super(event);
  }

  public float getX(int pointerIndex) {
      return event.getX(pointerIndex);
  }

  public float getY(int pointerIndex) {
      return event.getY(pointerIndex);
  }

  public int getPointerCount() {
      return event.getPointerCount();
  }

  public int getPointerId(int pointerIndex) {
      return event.getPointerId(pointerIndex);
  }
}

代码示例来源：origin: novoda/android-demos

public void setMultitouchPoints(MotionEvent event) {
  touchPoints.clear();
  int pointerIndex = 0;
  for (int index = 0; index < event.getPointerCount(); ++index) {
    pointerIndex = event.getPointerId(index);
    touchPoints.add(new PointF(event.getX(pointerIndex), event.getY(pointerIndex)));
  }
}

代码示例来源：origin: novoda/android-demos

public void setInitalPositionMultiPoints(MotionEvent event) {
  touchPoints.clear();
  int pointerIndex = 0;
  for (int index = 0; index < event.getPointerCount(); ++index) {
    pointerIndex = event.getPointerId(index);
    touchPoints.add(new PointF(event.getX(pointerIndex), event.getY(pointerIndex)));
  }
  double r = Math.atan2(touchPoints.get(1).x - touchPoints.get(1 - 1).x,
      touchPoints.get(1).y - touchPoints.get(1 - 1).y);
  old_degrees = -(int) Math.toDegrees(r);
}

代码示例来源：origin: chentao0707/SimplifyReader

private void onSecondaryPointerUp(MotionEvent ev) {
  final int pointerIndex = (ev.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK) >>
  MotionEvent.ACTION_POINTER_INDEX_SHIFT;
  final int pointerId = ev.getPointerId(pointerIndex);
  if (pointerId == mActivePointerId) {
    // This was our active pointer going up. Choose a new
    // active pointer and adjust accordingly.
    // TODO: Make this decision more intelligent.
    final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
    mMotionX = (int) ev.getX(newPointerIndex);
    mMotionY = (int) ev.getY(newPointerIndex);
    mActivePointerId = ev.getPointerId(newPointerIndex);
    if (mVelocityTracker != null) {
      mVelocityTracker.clear();
    }
  }
}

代码示例来源：origin: mxn21/FlowingDrawer

private void onPointerUp(MotionEvent ev) {
  final int pointerIndex = ev.getActionIndex();
  final int pointerId = ev.getPointerId(pointerIndex);
  if (pointerId == mActivePointerId) {
    final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
    mLastMotionX = ev.getX(newPointerIndex);
    mActivePointerId = ev.getPointerId(newPointerIndex);
    if (mVelocityTracker != null) {
      mVelocityTracker.clear();
    }
  }
}

代码示例来源：origin: jMonkeyEngine/jmonkeyengine

protected int getPointerId(MotionEvent event) {
  return event.getPointerId(getPointerIndex(event));
}

代码示例来源：origin: steelkiwi/cropiwa

private void onPointerUp(MotionEvent ev) {
  int id = ev.getPointerId(ev.getActionIndex());
  fingerToCornerMapping.remove(id);
}

代码示例来源：origin: steelkiwi/cropiwa

public void onDown(MotionEvent e) {
  onDown(e.getX(), e.getY(), e.getPointerId(0));
}

代码示例来源：origin: TangoAgency/material-intro-screen

private void onSecondaryPointerUp(MotionEvent ev) {
  final int pointerIndex = MotionEventCompat.getActionIndex(ev);
  final int pointerId = ev.getPointerId(pointerIndex);
  if (pointerId == mActivePointerId) {
    // This was our active pointer going up. Choose a new
    // active pointer and adjust accordingly.
    final int newPointerIndex = pointerIndex == 0 ? 1 : 0;
    mLastMotionX = ev.getX(newPointerIndex);
    mActivePointerId = ev.getPointerId(newPointerIndex);
    if (mVelocityTracker != null) {
      mVelocityTracker.clear();
    }
  }
}

代码示例来源：origin: steelkiwi/cropiwa

private void onPointerUp(MotionEvent e) {
  //If user lifted finger that we used to calculate translation, we need to find a new one
  if (e.getPointerId(e.getActionIndex()) == id) {
    int index = 0;
    while (index < e.getPointerCount() && index == e.getActionIndex()) {
      index++;
    }
    onDown(e.getX(index), e.getY(index), e.getPointerId(index));
  }
}

代码示例来源：origin: steelkiwi/cropiwa

/**
 * @return {@literal true} if ev.x && ev.y are in area of some corner point
 */
private boolean tryAssociateWithCorner(MotionEvent ev) {
  int index = ev.getActionIndex();
  return tryAssociateWithCorner(
      ev.getPointerId(index),
      ev.getX(index), ev.getY(index));
}

代码示例来源：origin: PhilJay/MPAndroidChart

public static void velocityTrackerPointerUpCleanUpIfNecessary(MotionEvent ev,
                               VelocityTracker tracker) {
  // Check the dot product of current velocities.
  // If the pointer that left was opposing another velocity vector, clear.
  tracker.computeCurrentVelocity(1000, mMaximumFlingVelocity);
  final int upIndex = ev.getActionIndex();
  final int id1 = ev.getPointerId(upIndex);
  final float x1 = tracker.getXVelocity(id1);
  final float y1 = tracker.getYVelocity(id1);
  for (int i = 0, count = ev.getPointerCount(); i < count; i++) {
    if (i == upIndex)
      continue;
    final int id2 = ev.getPointerId(i);
    final float x = x1 * tracker.getXVelocity(id2);
    final float y = y1 * tracker.getYVelocity(id2);
    final float dot = x + y;
    if (dot < 0) {
      tracker.clear();
      break;
    }
  }
}

代码示例来源：origin: ankidroid/Anki-Android

private void reinitializeSecondFinger(MotionEvent event) {
  mSecondFingerWithinTapTolerance = true;
  mSecondFingerPointerId = event.getPointerId(event.getActionIndex());
  mSecondFingerX0 = event.getX(event.findPointerIndex(mSecondFingerPointerId));
  mSecondFingerY0 = event.getY(event.findPointerIndex(mSecondFingerPointerId));
}

代码示例来源：origin: ankidroid/Anki-Android

private boolean trySecondFingerClick(MotionEvent event) {
  if (mSecondFingerPointerId == event.getPointerId(event.getActionIndex())) {
    updateSecondFinger(event);
    AbstractFlashcardViewer cardViewer = mCardViewer.get();
    if (mSecondFingerWithinTapTolerance && cardViewer != null) {
      cardViewer.tapOnCurrentCard((int) mSecondFingerX, (int) mSecondFingerY);
      return true;
    }
  }
  return false;
}

代码示例来源：origin: libgdx/libgdx

public void onTouch (MotionEvent event, AndroidInput input) {
  final int action = event.getAction() & MotionEvent.ACTION_MASK;
  int pointerIndex = (event.getAction() & MotionEvent.ACTION_POINTER_INDEX_MASK) >> MotionEvent.ACTION_POINTER_INDEX_SHIFT;
  int pointerId = event.getPointerId(pointerIndex);
      for (int i = 0; i < pointerCount; i++) {
        pointerIndex = i;
        pointerId = event.getPointerId(pointerIndex);
        x = (int)event.getX(pointerIndex);
        y = (int)event.getY(pointerIndex);

代码示例来源：origin: robolectric/robolectric

@Test
public void canSetPointerIdsByIndex() {
 shadowMotionEvent.setPointer2(20.0f, 30.0f);
 shadowMotionEvent.setPointerIds(2, 5);
 assertEquals(2, event.getPointerId(0));
 assertEquals(5, event.getPointerId(1));
}

代码示例来源：origin: EverythingMe/overscroll-decor

@Override
public boolean handleMoveTouchEvent(MotionEvent event) {
  final View view = mViewAdapter.getView();
  if (!mMoveAttr.init(view, event)) {
    return false;
  }
  // Has over-scrolling officially started?
  if ((mViewAdapter.isInAbsoluteStart() && mMoveAttr.mDir) ||
    (mViewAdapter.isInAbsoluteEnd() && !mMoveAttr.mDir)) {
    // Save initial over-scroll attributes for future reference.
    mStartAttr.mPointerId = event.getPointerId(0);
    mStartAttr.mAbsOffset = mMoveAttr.mAbsOffset;
    mStartAttr.mDir = mMoveAttr.mDir;
    issueStateTransition(mOverScrollingState);
    return mOverScrollingState.handleMoveTouchEvent(event);
  }
  return false;
}

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