Examples with MotionEvent android.view.MotionEvent used on opensource projects

Example 61 with MotionEvent

use of android.view.MotionEvent in project cardslib by gabrielemariotti.

the class SwipeDismissListItemViewTouchListener method onTouch.

@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
    if (mViewWidth < 2) {
        mViewWidth = mListView.getWidth();
    }
    switch(motionEvent.getActionMasked()) {
        case MotionEvent.ACTION_DOWN:
            {
                if (mPaused) {
                    return false;
                }
                if (mSwiping) {
                    return true;
                }
                // Find the child view that was touched (perform a hit test)
                Rect rect = new Rect();
                int childCount = mListView.getChildCount();
                int headerCount = 0;
                int footerCount = 0;
                int[] listViewCoords = new int[2];
                mListView.getLocationOnScreen(listViewCoords);
                int x = (int) motionEvent.getRawX() - listViewCoords[0];
                int y = (int) motionEvent.getRawY() - listViewCoords[1];
                View child = null;
                for (int i = headerCount; i < (childCount - footerCount); i++) {
                    child = mListView.getChildAt(i);
                    child.getHitRect(rect);
                    if (rect.contains(x, y)) {
                        mDownView = child;
                        break;
                    }
                }
                if (mDownView != null) {
                    mDownX = motionEvent.getRawX();
                    mDownY = motionEvent.getRawY();
                    mDownPosition = mListView.getPositionForView(mDownView);
                    CardWithList.ListObject object = mListView.getAdapter().getItem(mDownPosition);
                    if (mCallbacks.canDismiss(mDownPosition, object.getParentCard(), object)) {
                        mVelocityTracker = VelocityTracker.obtain();
                        mVelocityTracker.addMovement(motionEvent);
                    } else {
                        mDownView = null;
                    }
                }
                view.onTouchEvent(motionEvent);
                return false;
            }
        case MotionEvent.ACTION_MOVE:
            {
                if (mVelocityTracker == null || mPaused) {
                    break;
                }
                mVelocityTracker.addMovement(motionEvent);
                float deltaX = motionEvent.getRawX() - mDownX;
                float deltaY = motionEvent.getRawY() - mDownY;
                if (Math.abs(deltaX) > mSlop && Math.abs(deltaY) < Math.abs(deltaX) / 2) {
                    mSwiping = true;
                    mSwipingSlop = (deltaX > 0 ? mSlop : -mSlop);
                    mDownView.getParent().requestDisallowInterceptTouchEvent(true);
                    mListView.requestDisallowInterceptTouchEvent(true);
                    // Cancel ListView's touch (un-highlighting the item)
                    MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
                    cancelEvent.setAction(MotionEvent.ACTION_CANCEL | (motionEvent.getActionIndex() << MotionEvent.ACTION_POINTER_INDEX_SHIFT));
                    mDownView.onTouchEvent(cancelEvent);
                    cancelEvent.recycle();
                }
                if (mSwiping) {
                    mDownView.setTranslationX(deltaX - mSwipingSlop);
                    /* mDownView.setAlpha(Math.max(0f, Math.min(1f,
                            1f - 2f * Math.abs(deltaX) / mViewWidth)));
                   */
                    return true;
                }
                break;
            }
        case MotionEvent.ACTION_UP:
            {
                if (mVelocityTracker == null) {
                    break;
                }
                float deltaX = motionEvent.getRawX() - mDownX;
                mVelocityTracker.addMovement(motionEvent);
                mVelocityTracker.computeCurrentVelocity(1000);
                float velocityX = mVelocityTracker.getXVelocity();
                float absVelocityX = Math.abs(velocityX);
                float absVelocityY = Math.abs(mVelocityTracker.getYVelocity());
                boolean dismiss = false;
                boolean dismissRight = false;
                if (Math.abs(deltaX) > mViewWidth / swipeDistanceDivisor) {
                    dismiss = true;
                    dismissRight = deltaX > 0;
                } else if (mMinFlingVelocity <= absVelocityX && absVelocityX <= mMaxFlingVelocity && absVelocityY < absVelocityX && mSwiping) {
                    // dismiss only if flinging in the same direction as dragging
                    dismiss = (velocityX < 0) == (deltaX < 0);
                    dismissRight = mVelocityTracker.getXVelocity() > 0;
                }
                if (dismiss && mDownPosition != ListView.INVALID_POSITION) {
                    // dismiss
                    dismiss(mDownView, mDownPosition, dismissRight);
                } else {
                    // cancel
                    mDownView.animate().translationX(0).alpha(1).setDuration(mAnimationTime).setListener(null);
                }
                mVelocityTracker.recycle();
                mVelocityTracker = null;
                mDownX = 0;
                mDownY = 0;
                mDownView = null;
                mDownPosition = ListView.INVALID_POSITION;
                if (mSwiping) {
                    //To prevent onClick event with a fast swipe
                    mSwiping = false;
                    return true;
                }
                mSwiping = false;
                break;
            }
        case MotionEvent.ACTION_CANCEL:
            {
                if (mVelocityTracker == null) {
                    break;
                }
                if (mDownView != null) {
                    // cancel
                    mDownView.animate().translationX(0).alpha(1).setDuration(mAnimationTime).setListener(null);
                }
                mVelocityTracker.recycle();
                mVelocityTracker = null;
                mDownX = 0;
                mDownY = 0;
                mDownView = null;
                mDownPosition = ListView.INVALID_POSITION;
                mSwiping = false;
                break;
            }
    }
    return false;
}

Example 62 with MotionEvent

use of android.view.MotionEvent in project cardslib by gabrielemariotti.

the class SwipeDismissListViewTouchListener method onTouch.

/**
     * Returns an {@link AbsListView.OnScrollListener} to be added to the {@link
     * ListView} using {@link ListView#setOnScrollListener(AbsListView.OnScrollListener)}.
     * If a scroll listener is already assigned, the caller should still pass scroll changes through
     * to this listener. This will ensure that this {@link SwipeDismissListViewTouchListener} is
     * paused during list view scrolling.</p>
     *
     * @see SwipeDismissListViewTouchListener
     */
/*
    public AbsListView.OnScrollListener makeScrollListener() {
        return new AbsListView.OnScrollListener() {
            @Override
            public void onScrollStateChanged(AbsListView absListView, int scrollState) {
                setEnabled(scrollState != AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL);
            }

            @Override
            public void onScroll(AbsListView absListView, int i, int i1, int i2) {
            }
        };
    }*/
@Override
public boolean onTouch(View view, MotionEvent motionEvent) {
    if (mViewWidth < 2) {
        mViewWidth = mListView.getWidth();
    }
    switch(motionEvent.getActionMasked()) {
        case MotionEvent.ACTION_DOWN:
            {
                if (mPaused) {
                    return false;
                }
                if (mSwiping) {
                    return true;
                }
                // TODO: ensure this is a finger, and set a flag
                // Find the child view that was touched (perform a hit test)
                Rect rect = new Rect();
                int childCount = mListView.getChildCount();
                int headerCount = mListView.getHeaderViewsCount();
                int footerCount = mListView.getFooterViewsCount();
                int[] listViewCoords = new int[2];
                mListView.getLocationOnScreen(listViewCoords);
                int x = (int) motionEvent.getRawX() - listViewCoords[0];
                int y = (int) motionEvent.getRawY() - listViewCoords[1];
                View child = null;
                for (int i = headerCount; i < (childCount - footerCount); i++) {
                    child = mListView.getChildAt(i);
                    child.getHitRect(rect);
                    if (rect.contains(x, y)) {
                        mDownView = child;
                        break;
                    }
                }
                if (mDownView != null) {
                    mDownX = motionEvent.getRawX();
                    mDownY = motionEvent.getRawY();
                    mDownPosition = mListView.getPositionForView(mDownView);
                    if (mDownPosition != ListView.INVALID_POSITION && mDownPosition < mListView.getAdapter().getCount()) {
                        if (mListView.getAdapter().getItem(mDownPosition) instanceof Card) {
                            if (mCallbacks.canDismiss(mDownPosition, (Card) mListView.getAdapter().getItem(mDownPosition))) {
                                mVelocityTracker = VelocityTracker.obtain();
                                mVelocityTracker.addMovement(motionEvent);
                            } else {
                                mDownView = null;
                            }
                        } else {
                            mDownView = null;
                        }
                    } else {
                        mDownView = null;
                    }
                }
                view.onTouchEvent(motionEvent);
                return true;
            //return false;
            }
        case MotionEvent.ACTION_UP:
            {
                if (mVelocityTracker == null) {
                    break;
                }
                float deltaX = motionEvent.getRawX() - mDownX;
                mVelocityTracker.addMovement(motionEvent);
                mVelocityTracker.computeCurrentVelocity(1000);
                float velocityX = mVelocityTracker.getXVelocity();
                float absVelocityX = Math.abs(velocityX);
                float absVelocityY = Math.abs(mVelocityTracker.getYVelocity());
                boolean dismiss = false;
                boolean dismissRight = false;
                if (Math.abs(deltaX) > mViewWidth / swipeDistanceDivisor && mSwiping) {
                    dismiss = true;
                    dismissRight = deltaX > 0;
                } else if (mMinFlingVelocity <= absVelocityX && absVelocityX <= mMaxFlingVelocity && absVelocityY < absVelocityX && mSwiping) {
                    // dismiss only if flinging in the same direction as dragging
                    dismiss = (velocityX < 0) == (deltaX < 0);
                    dismissRight = mVelocityTracker.getXVelocity() > 0;
                }
                if (dismiss && mDownPosition != ListView.INVALID_POSITION) {
                    // dismiss
                    dismiss(mDownView, mDownPosition - mListView.getHeaderViewsCount(), dismissRight);
                } else {
                    // cancel
                    mDownView.animate().translationX(0).alpha(1).setDuration(mAnimationTime).setListener(null);
                }
                mVelocityTracker.recycle();
                mVelocityTracker = null;
                mDownX = 0;
                mDownY = 0;
                mDownView = null;
                mDownPosition = ListView.INVALID_POSITION;
                if (mSwiping) {
                    //To prevent onClick event with a fast swipe
                    mSwiping = false;
                    return true;
                }
                mSwiping = false;
                break;
            }
        case MotionEvent.ACTION_CANCEL:
            {
                if (mVelocityTracker == null) {
                    break;
                }
                if (mDownView != null) {
                    // cancel
                    mDownView.animate().translationX(0).alpha(1).setDuration(mAnimationTime).setListener(null);
                }
                mVelocityTracker.recycle();
                mVelocityTracker = null;
                mDownX = 0;
                mDownY = 0;
                mDownView = null;
                mDownPosition = ListView.INVALID_POSITION;
                mSwiping = false;
                break;
            }
        case MotionEvent.ACTION_MOVE:
            {
                if (mVelocityTracker == null || mPaused) {
                    break;
                }
                mVelocityTracker.addMovement(motionEvent);
                float deltaX = motionEvent.getRawX() - mDownX;
                float deltaY = motionEvent.getRawY() - mDownY;
                boolean movementAllowed = isSwipeMovementAllowed(deltaX);
                if (Math.abs(deltaX) > mSlop && Math.abs(deltaY) < Math.abs(deltaX) / 2 && movementAllowed) {
                    mSwiping = true;
                    mSwipingSlop = (deltaX > 0 ? mSlop : -mSlop);
                    mListView.requestDisallowInterceptTouchEvent(true);
                    // Cancel ListView's touch (un-highlighting the item)
                    MotionEvent cancelEvent = MotionEvent.obtain(motionEvent);
                    cancelEvent.setAction(MotionEvent.ACTION_CANCEL | (motionEvent.getActionIndex() << MotionEvent.ACTION_POINTER_INDEX_SHIFT));
                    mListView.onTouchEvent(cancelEvent);
                    view.onTouchEvent(cancelEvent);
                    cancelEvent.recycle();
                }
                if (mSwiping) {
                    mDownView.setTranslationX(deltaX - mSwipingSlop);
                    mDownView.setAlpha(Math.max(0f, Math.min(1f, 1f - 2f * Math.abs(deltaX) / mViewWidth)));
                    return true;
                }
                break;
            }
    }
    return false;
}

Example 63 with MotionEvent

use of android.view.MotionEvent in project cardslib by gabrielemariotti.

the class SwipeDismissListViewTouchListener method performDismiss.

private void performDismiss(final View dismissView, final int dismissPosition) {
    // Animate the dismissed list item to zero-height and fire the dismiss callback when
    // all dismissed list item animations have completed. This triggers layout on each animation
    // frame; in the future we may want to do something smarter and more performant.
    final ViewGroup.LayoutParams lp = dismissView.getLayoutParams();
    final int originalHeight = dismissView.getHeight();
    ValueAnimator animator = ValueAnimator.ofInt(originalHeight, 1).setDuration(mAnimationTime);
    animator.addListener(new AnimatorListenerAdapter() {

        @Override
        public void onAnimationEnd(Animator animation) {
            --mDismissAnimationRefCount;
            if (mDismissAnimationRefCount == 0) {
                // No active animations, process all pending dismisses.
                // Sort by descending position
                Collections.sort(mPendingDismisses);
                int[] dismissPositions = new int[mPendingDismisses.size()];
                for (int i = mPendingDismisses.size() - 1; i >= 0; i--) {
                    dismissPositions[i] = mPendingDismisses.get(i).position;
                }
                mCallbacks.onDismiss(mListView, dismissPositions);
                // Reset mDownPosition to avoid MotionEvent.ACTION_UP trying to start a dismiss
                // animation with a stale position
                mDownPosition = ListView.INVALID_POSITION;
                ViewGroup.LayoutParams lp;
                for (PendingDismissData pendingDismiss : mPendingDismisses) {
                    // Reset view presentation
                    pendingDismiss.view.setAlpha(1f);
                    pendingDismiss.view.setTranslationX(0);
                    lp = pendingDismiss.view.getLayoutParams();
                    lp.height = 0;
                    pendingDismiss.view.setLayoutParams(lp);
                }
                // Send a cancel event
                long time = SystemClock.uptimeMillis();
                MotionEvent cancelEvent = MotionEvent.obtain(time, time, MotionEvent.ACTION_CANCEL, 0, 0, 0);
                mListView.dispatchTouchEvent(cancelEvent);
                mPendingDismisses.clear();
            }
        }
    });
    animator.addUpdateListener(new ValueAnimator.AnimatorUpdateListener() {

        @Override
        public void onAnimationUpdate(ValueAnimator valueAnimator) {
            lp.height = (Integer) valueAnimator.getAnimatedValue();
            dismissView.setLayoutParams(lp);
        }
    });
    mPendingDismisses.add(new PendingDismissData(dismissPosition, dismissView));
    animator.start();
}

Example 64 with MotionEvent

use of android.view.MotionEvent in project MusicDNA by harjot-oberai.

the class PlaylistTrackAdapter method onBindViewHolder.

@Override
public void onBindViewHolder(final PlaylistTrackAdapter.MyViewHolder holder, int position) {
    UnifiedTrack ut = songList.get(position);
    if (ut.getType()) {
        LocalTrack lt = ut.getLocalTrack();
        imgLoader.DisplayImage(lt.getPath(), holder.art);
        holder.title.setText(lt.getTitle());
        holder.artist.setText(lt.getArtist());
    } else {
        Track t = ut.getStreamTrack();
        Picasso.with(ctx).load(t.getArtworkURL()).resize(100, 100).error(R.drawable.ic_default).placeholder(R.drawable.ic_default).into(holder.art);
        holder.title.setText(t.getTitle());
        holder.artist.setText("");
    }
    holder.holderImg.setOnTouchListener(new View.OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            if (MotionEventCompat.getActionMasked(event) == MotionEvent.ACTION_DOWN) {
                mDragStartListener.onDragStarted(holder);
            }
            return false;
        }
    });
}

Example 65 with MotionEvent

use of android.view.MotionEvent in project coursera-android by aporter.

the class IndicateTouchLocationActivity method onCreate.

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.main);
    mFrame = (FrameLayout) findViewById(R.id.frame);
    // Initialize pool of View.
    initViews();
    // Create and set on touch listener
    mFrame.setOnTouchListener(new OnTouchListener() {

        @Override
        public boolean onTouch(View v, MotionEvent event) {
            switch(event.getActionMasked()) {
                case MotionEvent.ACTION_DOWN:
                case MotionEvent.ACTION_POINTER_DOWN:
                    {
                        int pointerIndex = event.getActionIndex();
                        int pointerID = event.getPointerId(pointerIndex);
                        MarkerView marker = mInactiveMarkers.remove();
                        if (null != marker) {
                            mActiveMarkers.put(pointerID, marker);
                            marker.setXLoc(event.getX(pointerIndex));
                            marker.setYLoc(event.getY(pointerIndex));
                            updateTouches(mActiveMarkers.size());
                            mFrame.addView(marker);
                        }
                        break;
                    }
                case MotionEvent.ACTION_UP:
                case MotionEvent.ACTION_POINTER_UP:
                    {
                        int pointerIndex = event.getActionIndex();
                        int pointerID = event.getPointerId(pointerIndex);
                        MarkerView marker = mActiveMarkers.remove(pointerID);
                        if (null != marker) {
                            mInactiveMarkers.add(marker);
                            updateTouches(mActiveMarkers.size());
                            mFrame.removeView(marker);
                        }
                        break;
                    }
                case MotionEvent.ACTION_MOVE:
                    {
                        for (int idx = 0; idx < event.getPointerCount(); idx++) {
                            int ID = event.getPointerId(idx);
                            MarkerView marker = mActiveMarkers.get(ID);
                            if (null != marker) {
                                // Redraw only if finger has travel ed a minimum distance   
                                if (Math.abs(marker.getXLoc() - event.getX(idx)) > MIN_DXDY || Math.abs(marker.getYLoc() - event.getY(idx)) > MIN_DXDY) {
                                    // Set new location
                                    marker.setXLoc(event.getX(idx));
                                    marker.setYLoc(event.getY(idx));
                                    // Request re-draw
                                    marker.invalidate();
                                }
                            }
                        }
                        break;
                    }
                default:
                    Log.i(TAG, "unhandled action");
            }
            return true;
        }

        // update number of touches on each active MarkerView
        private void updateTouches(int numActive) {
            for (MarkerView marker : mActiveMarkers.values()) {
                marker.setTouches(numActive);
            }
        }
    });
}