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Fix some smooth scrolling bugs in lists and update on the animation

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Change-Id: I0cb03c6da204a34c9e942c3953b87287c3d4763d
This commit is contained in:
Adam Powell
2012-04-12 15:01:40 -07:00
parent a131f4efee
commit 1fa179ef41
3 changed files with 55 additions and 33 deletions
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74
core/java/android/widget/AbsListView.java
View File

@@ -403,7 +403,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
/**
* Handles scrolling between positions within the list.
*/
private PositionScroller mPositionScroller;
PositionScroller mPositionScroller;
/**
* The offset in pixels form the top of the AdapterView to the top
@@ -3080,6 +3080,10 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
return isClickable() || isLongClickable();
}
if (mPositionScroller != null) {
mPositionScroller.stop();
}
if (mFastScroller != null) {
boolean intercepted = mFastScroller.onTouchEvent(ev);
if (intercepted) {
@@ -3564,6 +3568,10 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
int action = ev.getAction();
View v;
if (mPositionScroller != null) {
mPositionScroller.stop();
}
if (mFastScroller != null) {
boolean intercepted = mFastScroller.onInterceptTouchEvent(ev);
if (intercepted) {
@@ -3748,7 +3756,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
mScroller.fling(0, initialY, 0, initialVelocity,
0, Integer.MAX_VALUE, 0, Integer.MAX_VALUE);
mTouchMode = TOUCH_MODE_FLING;
post(this);
postOnAnimation(this);
if (PROFILE_FLINGING) {
if (!mFlingProfilingStarted) {
@@ -3766,7 +3774,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
if (mScroller.springBack(0, mScrollY, 0, 0, 0, 0)) {
mTouchMode = TOUCH_MODE_OVERFLING;
invalidate();
post(this);
postOnAnimation(this);
} else {
mTouchMode = TOUCH_MODE_REST;
reportScrollStateChange(OnScrollListener.SCROLL_STATE_IDLE);
@@ -3778,7 +3786,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
Integer.MIN_VALUE, Integer.MAX_VALUE, 0, getHeight());
mTouchMode = TOUCH_MODE_OVERFLING;
invalidate();
post(this);
postOnAnimation(this);
}
void edgeReached(int delta) {
@@ -3800,7 +3808,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
}
}
invalidate();
post(this);
postOnAnimation(this);
}
void startScroll(int distance, int duration) {
@@ -3808,7 +3816,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
mLastFlingY = initialY;
mScroller.startScroll(0, initialY, 0, distance, duration);
mTouchMode = TOUCH_MODE_FLING;
post(this);
postOnAnimation(this);
}
void endFling() {
@@ -3907,7 +3915,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
if (more && !atEnd) {
if (atEdge) invalidate();
mLastFlingY = y;
post(this);
postOnAnimation(this);
} else {
endFling();
@@ -3948,7 +3956,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
}
} else {
invalidate();
post(this);
postOnAnimation(this);
}
} else {
endFling();
@@ -3959,7 +3967,6 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
}
}
class PositionScroller implements Runnable {
private static final int SCROLL_DURATION = 400;
@@ -4009,7 +4016,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
mBoundPos = INVALID_POSITION;
mLastSeenPos = INVALID_POSITION;
post(this);
postOnAnimation(this);
}
void start(int position, int boundPosition) {
@@ -4070,7 +4077,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
mBoundPos = boundPosition;
mLastSeenPos = INVALID_POSITION;
post(this);
postOnAnimation(this);
}
void startWithOffset(int position, int offset) {
@@ -4080,6 +4087,8 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
void startWithOffset(int position, int offset, int duration) {
stop();
offset += getPaddingTop();
mTargetPos = position;
mOffsetFromTop = offset;
mBoundPos = INVALID_POSITION;
@@ -4108,7 +4117,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
(int) (duration / screenTravelCount);
mLastSeenPos = INVALID_POSITION;
post(this);
postOnAnimation(this);
}
void stop() {
@@ -4116,10 +4125,6 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
}
public void run() {
if (mTouchMode != TOUCH_MODE_FLING && mLastSeenPos != INVALID_POSITION) {
return;
}
final int listHeight = getHeight();
final int firstPos = mFirstPosition;
@@ -4134,7 +4139,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
if (lastPos == mLastSeenPos) {
// No new views, let things keep going.
post(this);
postOnAnimation(this);
return;
}
@@ -4142,14 +4147,15 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
final int lastViewHeight = lastView.getHeight();
final int lastViewTop = lastView.getTop();
final int lastViewPixelsShowing = listHeight - lastViewTop;
final int extraScroll = lastPos < mItemCount - 1 ? mExtraScroll : mListPadding.bottom;
final int extraScroll = lastPos < mItemCount - 1 ?
Math.max(mListPadding.bottom, mExtraScroll) : mListPadding.bottom;
smoothScrollBy(lastViewHeight - lastViewPixelsShowing + extraScroll,
mScrollDuration);
final int scrollBy = lastViewHeight - lastViewPixelsShowing + extraScroll;
smoothScrollBy(scrollBy, mScrollDuration);
mLastSeenPos = lastPos;
if (lastPos < mTargetPos) {
post(this);
postOnAnimation(this);
}
break;
}
@@ -4166,21 +4172,21 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
if (nextPos == mLastSeenPos) {
// No new views, let things keep going.
post(this);
postOnAnimation(this);
return;
}
final View nextView = getChildAt(nextViewIndex);
final int nextViewHeight = nextView.getHeight();
final int nextViewTop = nextView.getTop();
final int extraScroll = mExtraScroll;
final int extraScroll = Math.max(mListPadding.bottom, mExtraScroll);
if (nextPos < mBoundPos) {
smoothScrollBy(Math.max(0, nextViewHeight + nextViewTop - extraScroll),
mScrollDuration);
mLastSeenPos = nextPos;
post(this);
postOnAnimation(this);
} else {
if (nextViewTop > extraScroll) {
smoothScrollBy(nextViewTop - extraScroll, mScrollDuration);
@@ -4192,7 +4198,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
case MOVE_UP_POS: {
if (firstPos == mLastSeenPos) {
// No new views, let things keep going.
post(this);
postOnAnimation(this);
return;
}
@@ -4201,14 +4207,15 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
return;
}
final int firstViewTop = firstView.getTop();
final int extraScroll = firstPos > 0 ? mExtraScroll : mListPadding.top;
final int extraScroll = firstPos > 0 ?
Math.max(mExtraScroll, mListPadding.top) : mListPadding.top;
smoothScrollBy(firstViewTop - extraScroll, mScrollDuration);
mLastSeenPos = firstPos;
if (firstPos > mTargetPos) {
post(this);
postOnAnimation(this);
}
break;
}
@@ -4230,12 +4237,13 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
final int lastViewHeight = lastView.getHeight();
final int lastViewTop = lastView.getTop();
final int lastViewPixelsShowing = listHeight - lastViewTop;
final int extraScroll = Math.max(mListPadding.top, mExtraScroll);
mLastSeenPos = lastPos;
if (lastPos > mBoundPos) {
smoothScrollBy(-(lastViewPixelsShowing - mExtraScroll), mScrollDuration);
post(this);
smoothScrollBy(-(lastViewPixelsShowing - extraScroll), mScrollDuration);
postOnAnimation(this);
} else {
final int bottom = listHeight - mExtraScroll;
final int bottom = listHeight - extraScroll;
final int lastViewBottom = lastViewTop + lastViewHeight;
if (bottom > lastViewBottom) {
smoothScrollBy(-(bottom - lastViewBottom), mScrollDuration);
@@ -4270,10 +4278,10 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
final float modifier = Math.min(Math.abs(screenTravelCount), 1.f);
if (position < firstPos) {
smoothScrollBy((int) (-getHeight() * modifier), mScrollDuration);
post(this);
postOnAnimation(this);
} else if (position > lastPos) {
smoothScrollBy((int) (getHeight() * modifier), mScrollDuration);
post(this);
postOnAnimation(this);
} else {
// On-screen, just scroll.
final int targetTop = getChildAt(position - firstPos).getTop();
@@ -4620,7 +4628,7 @@ public abstract class AbsListView extends AdapterView<ListAdapter> implements Te
// invalidate before moving the children to avoid unnecessary invalidate
// calls to bubble up from the children all the way to the top
if (!awakenScrollBars()) {
invalidate();
invalidate();
}
offsetChildrenTopAndBottom(incrementalDeltaY);

7
core/java/android/widget/GridView.java
View File

@@ -1463,6 +1463,9 @@ public class GridView extends AbsListView {
mResurrectToPosition = position;
}
mLayoutMode = LAYOUT_SET_SELECTION;
if (mPositionScroller != null) {
mPositionScroller.stop();
}
requestLayout();
}
@@ -1475,6 +1478,10 @@ public class GridView extends AbsListView {
void setSelectionInt(int position) {
int previousSelectedPosition = mNextSelectedPosition;
if (mPositionScroller != null) {
mPositionScroller.stop();
}
setNextSelectedPositionInt(position);
layoutChildren();

7
core/java/android/widget/ListView.java
View File

@@ -1926,6 +1926,9 @@ public class ListView extends AbsListView {
mSyncRowId = mAdapter.getItemId(position);
}
if (mPositionScroller != null) {
mPositionScroller.stop();
}
requestLayout();
}
}
@@ -1950,6 +1953,10 @@ public class ListView extends AbsListView {
}
}
if (mPositionScroller != null) {
mPositionScroller.stop();
}
layoutChildren();
if (awakeScrollbars) {