Java Code Examples for android.widget.Scroller#computeScrollOffset()
The following examples show how to use
android.widget.Scroller#computeScrollOffset() .
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Example 1
| Source File: NumberPicker.java From DatePicker with Apache License 2.0 | 6 votes |
|
@Override
public void computeScroll() {
Scroller scroller = mFlingScroller;
if (scroller.isFinished()) {
onScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE);
scroller = mAdjustScroller;
if (scroller.isFinished()) {
return;
}
}
scroller.computeScrollOffset();
mCurrY = scroller.getCurrY();
mOffectY = mCurrY - mStartY;
computeYPos(mOffectY);
invalidate();
mStartY = mCurrY;
}
Example 2
| Source File: NumberPicker.java From DateTimePicker with Apache License 2.0 | 6 votes |
|
@Override
public void computeScroll() {
Scroller scroller = mFlingScroller;
if (scroller.isFinished()) {
scroller = mAdjustScroller;
if (scroller.isFinished()) {
return;
}
}
scroller.computeScrollOffset();
int currentScrollerY = scroller.getCurrY();
if (mPreviousScrollerY == 0) {
mPreviousScrollerY = scroller.getStartY();
}
scrollBy(0, currentScrollerY - mPreviousScrollerY);
mPreviousScrollerY = currentScrollerY;
if (scroller.isFinished()) {
onScrollerFinished(scroller);
} else {
invalidate();
}
}
Example 3
| Source File: AutoScrollTextView.java From BigApp_Discuz_Android with Apache License 2.0 | 6 votes |
|
/**
* 此方法为最后机会来修改mScrollX,mScrollY. 这方法后将根据mScrollX,mScrollY来偏移Canvas已实现内容滚动
*/
@Override
public void computeScroll() {
super.computeScroll();
final Scroller scroller = mScroller;
if (scroller.computeScrollOffset()) { // 正在滚动，让view滚动到当前位置
int scrollY = scroller.getCurrY();
final int maxY = (getLineCount() * getLineHeight()
+ getPaddingTop() + getPaddingBottom())
- getHeight();
boolean toEdge = scrollY < 0 || scrollY > maxY;
if (scrollY < 0)
scrollY = 0;
else if (scrollY > maxY)
scrollY = maxY;
/*
* 下面等同于： mScrollY = scrollY; awakenScrollBars(); //显示滚动条，必须在xml中配置。
* postInvalidate();
*/
scrollTo(0, scrollY);
if (toEdge) // 移到两端，由于位置没有发生变化，导致滚动条不显示
awakenScrollBars();
}
}
Example 4
| Source File: ScrollTextView.java From BigApp_Discuz_Android with Apache License 2.0 | 6 votes |
|
/**
* 此方法为最后机会来修改mScrollX,mScrollY. 这方法后将根据mScrollX,mScrollY来偏移Canvas已实现内容滚动
*/
@Override
public void computeScroll() {
super.computeScroll();
final Scroller scroller = mScroller;
if (scroller.computeScrollOffset()) { // 正在滚动，让view滚动到当前位置
int scrollY = scroller.getCurrY();
final int maxY = (getLineCount() * getLineHeight()
+ getPaddingTop() + getPaddingBottom())
- getHeight();
boolean toEdge = scrollY < 0 || scrollY > maxY;
if (scrollY < 0)
scrollY = 0;
else if (scrollY > maxY)
scrollY = maxY;
/*
* 下面等同于： mScrollY = scrollY; awakenScrollBars(); //显示滚动条，必须在xml中配置。
* postInvalidate();
*/
scrollTo(0, scrollY);
if (toEdge) // 移到两端，由于位置没有发生变化，导致滚动条不显示
awakenScrollBars();
}
}
Example 5
| Source File: NumberPicker.java From NewXmPluginSDK with Apache License 2.0 | 6 votes |
|
@Override
public void computeScroll() {
Scroller scroller = mFlingScroller;
if (scroller.isFinished()) {
scroller = mAdjustScroller;
if (scroller.isFinished()) {
return;
}
}
scroller.computeScrollOffset();
int currentScrollerY = scroller.getCurrY();
if (mPreviousScrollerY == 0) {
mPreviousScrollerY = scroller.getStartY();
}
scrollBy(0, currentScrollerY - mPreviousScrollerY);
mPreviousScrollerY = currentScrollerY;
if (scroller.isFinished()) {
onScrollerFinished(scroller);
} else {
invalidate();
}
}
Example 6
| Source File: VelocityViewPager.java From CoverFlowPager with MIT License | 6 votes |
|
@Override
public void run() {
final Scroller scroller = mScroller;
boolean animationNotFinished = scroller.computeScrollOffset();
final int x = scroller.getCurrX();
int delta = x - mLastFlingX;
trackMotion(delta);
if (animationNotFinished) {
mLastFlingX = x;
post(this);
} else {
endFling();
}
}
Example 7
| Source File: MeterNumberPicker.java From meter-number-picker with Apache License 2.0 | 5 votes |
|
@Override
public void computeScroll() {
Scroller scroller = flingScroller;
if (scroller.isFinished()) {
scroller = adjustScroller;
if (scroller.isFinished()) {
return;
}
}
scroller.computeScrollOffset();
int currentScrollerY = scroller.getCurrY();
int diffScrollY = scrollerLastY - currentScrollerY;
currentScrollOffset -= diffScrollY;
scrollerLastY = currentScrollerY;
if (adjustScroller.isFinished()) {
if (flingScroller.isFinished()) {
if (currentScrollOffset != 0) {
int measuredHeight = getMeasuredHeight();
int adjustedValueOffset = calculateAdjustedValueOffset(measuredHeight);
value = getValue(adjustedValueOffset);
adjust(measuredHeight, adjustedValueOffset);
}
} else {
int newScrollOffset = currentScrollOffset % getMeasuredHeight();
if (newScrollOffset != currentScrollOffset) {
int numberOfValuesScrolled = (currentScrollOffset - newScrollOffset) / getMeasuredHeight();
currentValueOffset += numberOfValuesScrolled;
currentScrollOffset = newScrollOffset;
}
}
}
invalidate();
}
Example 8
| Source File: MyScrollView.java From prayer-times-android with Apache License 2.0 | 5 votes |
|
private void initBounce() {
// init the bouncy scroller, and make sure the layout is being drawn
// after the top padding
mScroller = new Scroller(getContext(), new OvershootInterpolator(OVERSHOOT_TENSION));
overScrollerSpringbackTask = new Runnable() {
@Override
public void run() {
// scroll till after the padding
mScroller.computeScrollOffset();
scrollTo(0, mScroller.getCurrY());
if (!mScroller.isFinished()) {
post(this);
}
}
};
prevScrollY = getPaddingTop();
try {
mScrollXField = View.class.getDeclaredField("mScrollX");
mScrollYField = View.class.getDeclaredField("mScrollY");
} catch (Exception e) {
hasFailedObtainingScrollFields = true;
}
}
Example 9
| Source File: ScrollerCompat.java From adt-leanback-support with Apache License 2.0 | 4 votes |
|
@Override
public boolean computeScrollOffset(Object scroller) {
final Scroller s = (Scroller) scroller;
return s.computeScrollOffset();
}
Example 10
| Source File: PLAAbsListView.java From Lay-s with MIT License | 4 votes |
|
public void run() {
switch (mTouchMode) {
default:
return;
case TOUCH_MODE_FLING: {
if (mItemCount == 0 || getChildCount() == 0) {
endFling();
return;
}
final Scroller scroller = mScroller;
boolean more = scroller.computeScrollOffset();
final int y = scroller.getCurrY();
// Flip sign to convert finger direction to list items direction
// (e.g. finger moving down means list is moving towards the top)
int delta = mLastFlingY - y;
// Pretend that each frame of a fling scroll is a touch scroll
if (delta > 0) {
// List is moving towards the top. Use first view as mMotionPosition
mMotionPosition = mFirstPosition;
//final View firstView = getChildAt(0);
//mMotionViewOriginalTop = firstView.getTop();
mMotionViewOriginalTop = getScrollChildTop();
// Don't fling more than 1 screen
// delta = Math.min(getHeight() - mPaddingBottom - mPaddingTop - 1, delta);
delta = Math.min(getHeight() - getPaddingBottom() - getPaddingTop() - 1, delta);
} else {
// List is moving towards the bottom. Use last view as mMotionPosition
int offsetToLast = getChildCount() - 1;
mMotionPosition = mFirstPosition + offsetToLast;
//final View lastView = getChildAt(offsetToLast);
//mMotionViewOriginalTop = lastView.getTop();
mMotionViewOriginalTop = getScrollChildBottom();
// Don't fling more than 1 screen
// delta = Math.max(-(getHeight() - mPaddingBottom - mPaddingTop - 1), delta);
delta = Math.max(-(getHeight() - getPaddingBottom() - getPaddingTop() - 1), delta);
}
final boolean atEnd = trackMotionScroll(delta, delta);
if (more && !atEnd) {
invalidate();
mLastFlingY = y;
post(this);
} else {
endFling();
if (PROFILE_FLINGING) {
if (mFlingProfilingStarted) {
Debug.stopMethodTracing();
mFlingProfilingStarted = false;
}
}
}
break;
}
}
}
Example 11
| Source File: Touch.java From JotaTextEditor with Apache License 2.0 | 4 votes |
|
public void run() {
switch (mTouchMode) {
default:
return;
case TOUCH_MODE_FLING: {
// if (mItemCount == 0 || getChildCount() == 0) {
// endFling();
// return;
// }
final Scroller scroller = mScroller;
boolean more = scroller.computeScrollOffset();
int x = scroller.getCurrX();
int y = scroller.getCurrY();
// // Pretend that each frame of a fling scroll is a touch scroll
// if (delta > 0) {
// // List is moving towards the top. Use first view as mMotionPosition
// mMotionPosition = mFirstPosition;
// final View firstView = getChildAt(0);
// mMotionViewOriginalTop = firstView.getTop();
//
// // Don't fling more than 1 screen
// delta = Math.min(getHeight() - mPaddingBottom - mPaddingTop - 1, delta);
// } else {
// // List is moving towards the bottom. Use last view as mMotionPosition
// int offsetToLast = getChildCount() - 1;
// mMotionPosition = mFirstPosition + offsetToLast;
//
// final View lastView = getChildAt(offsetToLast);
// mMotionViewOriginalTop = lastView.getTop();
//
// // Don't fling more than 1 screen
// delta = Math.max(-(getHeight() - mPaddingBottom - mPaddingTop - 1), delta);
// }
Layout layout = mWidget.getLayout();
int padding = mWidget.getTotalPaddingTop() +
mWidget.getTotalPaddingBottom();
y = Math.min(y, layout.getHeight() - (mWidget.getHeight() -
padding));
y = Math.max(y, 0);
// final boolean atEnd = trackMotionScroll(delta, delta);
Touch.scrollTo( mWidget , layout , x , y );
int delta = mLastFlingY - y;
if (more && delta != 0) {
mWidget.invalidate();
mLastFlingY = y;
mWidget.post(this);
} else {
endFling();
// if (PROFILE_FLINGING) {
// if (mFlingProfilingStarted) {
// Debug.stopMethodTracing();
// mFlingProfilingStarted = false;
// }
// }
}
break;
}
}
}
Example 12
| Source File: ZrcAbsListView.java From ZrcListView with MIT License | 4 votes |
|
@Override
public void run() {
switch (mTouchMode) {
default:
endFling();
return;
case TOUCH_MODE_SCROLL:
if (mScroller.isFinished()) {
return;
}
case TOUCH_MODE_RESCROLL:
case TOUCH_MODE_FLING: {
if (mDataChanged) {
layoutChildren();
}
final Scroller scroller = mScroller;
boolean more = scroller.computeScrollOffset();
final int y = scroller.getCurrY();
final int mPaddingBottom = getPaddingBottom();
final int mPaddingTop = getPaddingTop();
int delta = mLastFlingY - y;
if (delta > 0) {
mMotionPosition = mFirstPosition;
delta = Math.min(getHeight() - mPaddingBottom - mPaddingTop
- 1, delta);
} else {
int offsetToLast = getChildCount() - 1;
mMotionPosition = mFirstPosition + offsetToLast;
delta = Math.max(-(getHeight() - mPaddingBottom
- mPaddingTop - 1), delta);
}
final boolean atEdge = trackMotionScroll(delta, delta);
final boolean atEnd = atEdge && (delta != 0);
final int touchMode = mTouchMode;
if (atEnd) {
endFling();
if (touchMode == TOUCH_MODE_FLING) {
scrollToAdjustViewsUpOrDown();
}
break;
}
if (more && !atEnd) {
mLastFlingY = y;
ViewCompat.postOnAnimation(ZrcAbsListView.this, this);
} else {
endFling();
if (touchMode == TOUCH_MODE_FLING) {
scrollToAdjustViewsUpOrDown();
}
}
break;
}
}
}
Example 13
| Source File: PLA_AbsListView.java From EverMemo with MIT License | 4 votes |
|
public void run() {
switch (mTouchMode) {
default:
return;
case TOUCH_MODE_FLING: {
if (mItemCount == 0 || getChildCount() == 0) {
endFling();
return;
}
final Scroller scroller = mScroller;
boolean more = scroller.computeScrollOffset();
final int y = scroller.getCurrY();
// Flip sign to convert finger direction to list items direction
// (e.g. finger moving down means list is moving towards the top)
int delta = mLastFlingY - y;
// Pretend that each frame of a fling scroll is a touch scroll
if (delta > 0) {
// List is moving towards the top. Use first view as mMotionPosition
mMotionPosition = mFirstPosition;
//final View firstView = getChildAt(0);
//mMotionViewOriginalTop = firstView.getTop();
mMotionViewOriginalTop = getScrollChildTop();
// Don't fling more than 1 screen
// delta = Math.min(getHeight() - mPaddingBottom - mPaddingTop - 1, delta);
delta = Math.min(getHeight() - getPaddingBottom() - getPaddingTop() - 1, delta);
} else {
// List is moving towards the bottom. Use last view as mMotionPosition
int offsetToLast = getChildCount() - 1;
mMotionPosition = mFirstPosition + offsetToLast;
//final View lastView = getChildAt(offsetToLast);
//mMotionViewOriginalTop = lastView.getTop();
mMotionViewOriginalTop = getScrollChildBottom();
// Don't fling more than 1 screen
// delta = Math.max(-(getHeight() - mPaddingBottom - mPaddingTop - 1), delta);
delta = Math.max(-(getHeight() - getPaddingBottom() - getPaddingTop() - 1), delta);
}
final boolean atEnd = trackMotionScroll(delta, delta);
if (more && !atEnd) {
invalidate();
mLastFlingY = y;
post(this);
} else {
endFling();
if (PROFILE_FLINGING) {
if (mFlingProfilingStarted) {
Debug.stopMethodTracing();
mFlingProfilingStarted = false;
}
}
}
break;
}
}
}
Example 14
| Source File: PLAAbsListView.java From SimplifyReader with Apache License 2.0 | 4 votes |
|
public void run() {
switch (mTouchMode) {
default:
return;
case TOUCH_MODE_FLING: {
if (mItemCount == 0 || getChildCount() == 0) {
endFling();
return;
}
final Scroller scroller = mScroller;
boolean more = scroller.computeScrollOffset();
final int y = scroller.getCurrY();
// Flip sign to convert finger direction to list items direction
// (e.g. finger moving down means list is moving towards the top)
int delta = mLastFlingY - y;
// Pretend that each frame of a fling scroll is a touch scroll
if (delta > 0) {
// List is moving towards the top. Use first view as mMotionPosition
mMotionPosition = mFirstPosition;
//final View firstView = getChildAt(0);
//mMotionViewOriginalTop = firstView.getTop();
mMotionViewOriginalTop = getScrollChildTop();
// Don't fling more than 1 screen
// delta = Math.min(getHeight() - mPaddingBottom - mPaddingTop - 1, delta);
delta = Math.min(getHeight() - getPaddingBottom() - getPaddingTop() - 1, delta);
} else {
// List is moving towards the bottom. Use last view as mMotionPosition
int offsetToLast = getChildCount() - 1;
mMotionPosition = mFirstPosition + offsetToLast;
//final View lastView = getChildAt(offsetToLast);
//mMotionViewOriginalTop = lastView.getTop();
mMotionViewOriginalTop = getScrollChildBottom();
// Don't fling more than 1 screen
// delta = Math.max(-(getHeight() - mPaddingBottom - mPaddingTop - 1), delta);
delta = Math.max(-(getHeight() - getPaddingBottom() - getPaddingTop() - 1), delta);
}
final boolean atEnd = trackMotionScroll(delta, delta);
if (more && !atEnd) {
invalidate();
mLastFlingY = y;
post(this);
} else {
endFling();
if (PROFILE_FLINGING) {
if (mFlingProfilingStarted) {
Debug.stopMethodTracing();
mFlingProfilingStarted = false;
}
}
}
break;
}
}
}
Example 15
| Source File: TwoWayAbsListView.java From recent-images with MIT License | 4 votes |
|
@Override
public void run() {
if (mTouchMode == TOUCH_MODE_FLING) {
if (mItemCount == 0 || getChildCount() == 0) {
endFling();
return;
}
final Scroller scroller = mScroller;
boolean more = scroller.computeScrollOffset();
final int x = scroller.getCurrX();
// Flip sign to convert finger direction to list items direction
// (e.g. finger moving down means list is moving towards the top)
int delta = mLastFlingX - x;
// Pretend that each frame of a fling scroll is a touch scroll
if (delta > 0) {
// List is moving towards the top. Use first view as mMotionPosition
mMotionPosition = mFirstPosition;
final View firstView = getChildAt(0);
mMotionViewOriginalLeft = firstView.getLeft();
// Don't fling more than 1 screen
delta = Math.min(getWidth() - getPaddingRight() - getPaddingLeft() - 1, delta);
} else {
// List is moving towards the bottom. Use last view as mMotionPosition
int offsetToLast = getChildCount() - 1;
mMotionPosition = mFirstPosition + offsetToLast;
final View lastView = getChildAt(offsetToLast);
mMotionViewOriginalLeft = lastView.getLeft();
// Don't fling more than 1 screen
delta = Math.max(-(getWidth() - getPaddingRight() - getPaddingLeft() - 1), delta);
}
final boolean atEnd = trackMotionScroll(delta, delta);
if (more && !atEnd) {
invalidate();
mLastFlingX = x;
post(this);
} else {
endFling();
if (PROFILE_FLINGING && mFlingProfilingStarted) {
Debug.stopMethodTracing();
mFlingProfilingStarted = false;
}
}
} else {
return;
}
}
Example 16
| Source File: TwoWayAbsListView.java From recent-images with MIT License | 4 votes |
|
@Override
public void run() {
if (mTouchMode == TOUCH_MODE_FLING) {
if (mItemCount == 0 || getChildCount() == 0) {
endFling();
return;
}
final Scroller scroller = mScroller;
boolean more = scroller.computeScrollOffset();
final int y = scroller.getCurrY();
// Flip sign to convert finger direction to list items direction
// (e.g. finger moving down means list is moving towards the top)
int delta = mLastFlingY - y;
// Pretend that each frame of a fling scroll is a touch scroll
if (delta > 0) {
// List is moving towards the top. Use first view as mMotionPosition
mMotionPosition = mFirstPosition;
final View firstView = getChildAt(0);
mMotionViewOriginalTop = firstView.getTop();
// Don't fling more than 1 screen
delta = Math.min(getHeight() - getPaddingBottom() - getPaddingTop() - 1, delta);
} else {
// List is moving towards the bottom. Use last view as mMotionPosition
int offsetToLast = getChildCount() - 1;
mMotionPosition = mFirstPosition + offsetToLast;
final View lastView = getChildAt(offsetToLast);
mMotionViewOriginalTop = lastView.getTop();
// Don't fling more than 1 screen
delta = Math.max(-(getHeight() - getPaddingBottom() - getPaddingTop() - 1), delta);
}
final boolean atEnd = trackMotionScroll(delta, delta);
if (more && !atEnd) {
invalidate();
mLastFlingY = y;
post(this);
} else {
endFling();
if (PROFILE_FLINGING && mFlingProfilingStarted) {
Debug.stopMethodTracing();
mFlingProfilingStarted = false;
}
}
} else {
return;
}
}
Example 17
| Source File: EcoGallery.java From samples with Apache License 2.0 | 4 votes |
|
public void run() {
if (mItemCount == 0) {
endFling(true);
return;
}
mShouldStopFling = false;
final Scroller scroller = mScroller;
boolean more = scroller.computeScrollOffset();
final int x = scroller.getCurrX();
// Flip sign to convert finger direction to list items direction
// (e.g. finger moving down means list is moving towards the top)
int delta = mLastFlingX - x;
// Pretend that each frame of a fling scroll is a touch scroll
if (delta > 0) {
// Moving towards the left. Use first view as mDownTouchPosition
mDownTouchPosition = mFirstPosition;
// Don't fling more than 1 screen
delta = Math.min(getWidth() - getPaddingLeft() - getPaddingRight() - 1, delta);
} else {
// Moving towards the right. Use last view as mDownTouchPosition
int offsetToLast = getChildCount() - 1;
mDownTouchPosition = mFirstPosition + offsetToLast;
// Don't fling more than 1 screen
delta = Math.max(-(getWidth() - getPaddingRight() - getPaddingLeft() - 1), delta);
}
trackMotionScroll(delta);
if (more && !mShouldStopFling) {
mLastFlingX = x;
post(this);
} else {
endFling(true);
}
}
Example 18
| Source File: ExtendableListView.java From UltimateAndroid with Apache License 2.0 | 4 votes |
|
public void run() {
switch (mTouchMode) {
default:
return;
case TOUCH_MODE_FLINGING: {
if (mItemCount == 0 || getChildCount() == 0) {
endFling();
return;
}
final Scroller scroller = mScroller;
boolean more = scroller.computeScrollOffset();
final int y = scroller.getCurrY();
// Flip sign to convert finger direction to list items direction
// (e.g. finger moving down means list is moving towards the top)
int delta = mLastFlingY - y;
// Pretend that each frame of a fling scroll is a touch scroll
if (delta > 0) {
// List is moving towards the top. Use first view as mMotionPosition
mMotionPosition = mFirstPosition;
// Don't fling more than 1 screen
delta = Math.min(getHeight() - getPaddingBottom() - getPaddingTop() - 1, delta);
}
else {
// List is moving towards the bottom. Use last view as mMotionPosition
int offsetToLast = getChildCount() - 1;
mMotionPosition = mFirstPosition + offsetToLast;
// Don't fling more than 1 screen
delta = Math.max(-(getHeight() - getPaddingBottom() - getPaddingTop() - 1), delta);
}
final boolean atEnd = moveTheChildren(delta, delta);
if (more && !atEnd) {
invalidate();
mLastFlingY = y;
postOnAnimate(this);
}
else {
endFling();
}
break;
}
}
}
Example 19
| Source File: ZrcAbsListView.java From AndroidStudyDemo with GNU General Public License v2.0 | 4 votes |
|
@Override
public void run() {
switch (mTouchMode) {
default:
endFling();
return;
case TOUCH_MODE_SCROLL:
if (mScroller.isFinished()) {
return;
}
case TOUCH_MODE_RESCROLL:
case TOUCH_MODE_FLING: {
if (mDataChanged) {
layoutChildren();
}
final Scroller scroller = mScroller;
boolean more = scroller.computeScrollOffset();
final int y = scroller.getCurrY();
final int mPaddingBottom = getPaddingBottom();
final int mPaddingTop = getPaddingTop();
int delta = mLastFlingY - y;
if (delta > 0) {
mMotionPosition = mFirstPosition;
delta = Math.min(getHeight() - mPaddingBottom - mPaddingTop - 1, delta);
} else {
int offsetToLast = getChildCount() - 1;
mMotionPosition = mFirstPosition + offsetToLast;
delta = Math.max(-(getHeight() - mPaddingBottom - mPaddingTop - 1), delta);
}
final boolean atEdge = trackMotionScroll(delta, delta);
final boolean atEnd = atEdge && (delta != 0);
final int touchMode = mTouchMode;
if (atEnd) {
endFling();
if (touchMode == TOUCH_MODE_FLING) {
scrollToAdjustViewsUpOrDown();
}
break;
}
if (more && !atEnd) {
mLastFlingY = y;
ViewCompat.postOnAnimation(ZrcAbsListView.this, this);
} else {
endFling();
if (touchMode == TOUCH_MODE_FLING) {
scrollToAdjustViewsUpOrDown();
}
}
break;
}
}
}
Example 20
| Source File: ExtendableListView.java From UltimateAndroid with Apache License 2.0 | 4 votes |
|
public void run() {
switch (mTouchMode) {
default:
return;
case TOUCH_MODE_FLINGING: {
if (mItemCount == 0 || getChildCount() == 0) {
endFling();
return;
}
final Scroller scroller = mScroller;
boolean more = scroller.computeScrollOffset();
final int y = scroller.getCurrY();
// Flip sign to convert finger direction to list items direction
// (e.g. finger moving down means list is moving towards the top)
int delta = mLastFlingY - y;
// Pretend that each frame of a fling scroll is a touch scroll
if (delta > 0) {
// List is moving towards the top. Use first view as mMotionPosition
mMotionPosition = mFirstPosition;
// Don't fling more than 1 screen
delta = Math.min(getHeight() - getPaddingBottom() - getPaddingTop() - 1, delta);
}
else {
// List is moving towards the bottom. Use last view as mMotionPosition
int offsetToLast = getChildCount() - 1;
mMotionPosition = mFirstPosition + offsetToLast;
// Don't fling more than 1 screen
delta = Math.max(-(getHeight() - getPaddingBottom() - getPaddingTop() - 1), delta);
}
final boolean atEnd = moveTheChildren(delta, delta);
if (more && !atEnd) {
invalidate();
mLastFlingY = y;
postOnAnimate(this);
}
else {
endFling();
}
break;
}
}
}
