Example usage for android.view MotionEvent obtainNoHistory

Introduction

In this page you can find the example usage for android.view MotionEvent obtainNoHistory.

Prototype

static public MotionEvent obtainNoHistory(MotionEvent other) 

Source Link

Document

Create a new MotionEvent, copying from an existing one, but not including any historical point information.

Usage

From source file:android.support.v7.widget.ForwardingListener.java

/**
 * Handles forwarded motion events and determines when to stop
 * forwarding./*from  w  ww .j  a  v  a2s .c om*/
 *
 * @param srcEvent motion event in source view coordinates
 * @return true to continue forwarding motion events, false to cancel
 */
private boolean onTouchForwarded(MotionEvent srcEvent) {
    final View src = mSrc;
    final ShowableListMenu popup = getPopup();
    if (popup == null || !popup.isShowing()) {
        return false;
    }

    final DropDownListView dst = (DropDownListView) popup.getListView();
    if (dst == null || !dst.isShown()) {
        return false;
    }

    // Convert event to destination-local coordinates.
    final MotionEvent dstEvent = MotionEvent.obtainNoHistory(srcEvent);
    toGlobalMotionEvent(src, dstEvent);
    toLocalMotionEvent(dst, dstEvent);

    // Forward converted event to destination view, then recycle it.
    final boolean handled = dst.onForwardedEvent(dstEvent, mActivePointerId);
    dstEvent.recycle();

    // Always cancel forwarding when the touch stream ends.
    final int action = MotionEventCompat.getActionMasked(srcEvent);
    final boolean keepForwarding = action != MotionEvent.ACTION_UP && action != MotionEvent.ACTION_CANCEL;

    return handled && keepForwarding;
}

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From source file:com.achep.acdisplay.ui.fragments.AcDisplayFragment.java

private void populateStdMotion(@NonNull MotionEvent srcEvent) {
    // Track current movement to be able to handle
    // flings correctly.
    MotionEvent dstEvent = MotionEvent.obtainNoHistory(srcEvent);
    mVelocityTracker.addMovement(MotionEvent.obtainNoHistory(srcEvent));
    dstEvent.recycle();//w w w .jav a2  s.  c  om

    // No need to handle swipe-to-dismiss if the
    // widget is not dismissible.
    if (!isDismissible(mSelectedWidget)) {
        return;
    }

    final float y = srcEvent.getY() - mIconsContainer.getHeight();

    if (y <= 0) {
        if (mSceneContainer.getTranslationY() != 0) {
            resetSceneContainerParams();
        }
        return;
    }

    // Populate current animation
    float height = getSceneView().getHeight();
    float progress = MathUtils.range(y / height, 0f, 1f);
    populateStdAnimation(progress);
}

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From source file:com.marshalchen.ultimaterecyclerview.UltimateRecyclerView.java

@Override
public boolean onTouchEvent(MotionEvent ev) {
    URLogs.d("ev---" + ev);
    if (mCallbacks != null) {

        switch (ev.getActionMasked()) {
        case MotionEvent.ACTION_UP:
        case MotionEvent.ACTION_CANCEL:
            mIntercepted = false;/* w  w  w .jav  a2 s  . c o m*/
            mDragging = false;
            mCallbacks.onUpOrCancelMotionEvent(mObservableScrollState);
            break;
        case MotionEvent.ACTION_MOVE:
            if (mPrevMoveEvent == null) {
                mPrevMoveEvent = ev;
            }
            float diffY = ev.getY() - mPrevMoveEvent.getY();
            mPrevMoveEvent = MotionEvent.obtainNoHistory(ev);
            if (getCurrentScrollY() - diffY <= 0) {
                // Can't scroll anymore.

                if (mIntercepted) {
                    // Already dispatched ACTION_DOWN event to parents, so stop here.
                    return false;
                }

                // Apps can set the interception target other than the direct parent.
                final ViewGroup parent;
                if (mTouchInterceptionViewGroup == null) {
                    parent = (ViewGroup) getParent();
                } else {
                    parent = mTouchInterceptionViewGroup;
                }

                // Get offset to parents. If the parent is not the direct parent,
                // we should aggregate offsets from all of the parents.
                float offsetX = 0;
                float offsetY = 0;
                for (View v = this; v != null && v != parent; v = (View) v.getParent()) {
                    offsetX += v.getLeft() - v.getScrollX();
                    offsetY += v.getTop() - v.getScrollY();
                }
                final MotionEvent event = MotionEvent.obtainNoHistory(ev);
                event.offsetLocation(offsetX, offsetY);

                if (parent.onInterceptTouchEvent(event)) {
                    mIntercepted = true;

                    // If the parent wants to intercept ACTION_MOVE events,
                    // we pass ACTION_DOWN event to the parent
                    // as if these touch events just have began now.
                    event.setAction(MotionEvent.ACTION_DOWN);

                    // Return this onTouchEvent() first and set ACTION_DOWN event for parent
                    // to the queue, to keep events sequence.
                    post(new Runnable() {
                        @Override
                        public void run() {
                            parent.dispatchTouchEvent(event);
                        }
                    });
                    return false;
                }
                // Even when this can't be scrolled anymore,
                // simply returning false here may cause subView's click,
                // so delegate it to super.
                return super.onTouchEvent(ev);
            }
            break;
        }
    }
    return super.onTouchEvent(ev);
}

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