| Methods Summary |
|---|
| protected ViewGroup.LayoutParams | generateDefaultLayoutParams()
return new ViewGroup.LayoutParams(
ViewGroup.LayoutParams.MATCH_PARENT,
ViewGroup.LayoutParams.WRAP_CONTENT);
|
| public android.widget.SpinnerAdapter | getAdapter()
return mAdapter;
|
| int | getChildHeight(android.view.View child)
return child.getMeasuredHeight();
|
| int | getChildWidth(android.view.View child)
return child.getMeasuredWidth();
|
| public int | getCount()
return mItemCount;
|
| public android.view.View | getSelectedView()
if (mItemCount > 0 && mSelectedPosition >= 0) {
return getChildAt(mSelectedPosition - mFirstPosition);
} else {
return null;
}
|
| private void | initAbsSpinner()Common code for different constructor flavors
setFocusable(true);
setWillNotDraw(false);
|
| abstract void | layout(int delta, boolean animate)
|
| protected void | onMeasure(int widthMeasureSpec, int heightMeasureSpec)
int widthMode = MeasureSpec.getMode(widthMeasureSpec);
int widthSize;
int heightSize;
final int paddingLeft = getPaddingLeft();
final int paddingTop = getPaddingTop();
final int paddingRight = getPaddingRight();
final int paddingBottom = getPaddingBottom();
mSpinnerPadding.left = paddingLeft > mSelectionLeftPadding ? paddingLeft
: mSelectionLeftPadding;
mSpinnerPadding.top = paddingTop > mSelectionTopPadding ? paddingTop
: mSelectionTopPadding;
mSpinnerPadding.right = paddingRight > mSelectionRightPadding ? paddingRight
: mSelectionRightPadding;
mSpinnerPadding.bottom = paddingBottom > mSelectionBottomPadding ? paddingBottom
: mSelectionBottomPadding;
if (mDataChanged) {
handleDataChanged();
}
int preferredHeight = 0;
int preferredWidth = 0;
boolean needsMeasuring = true;
int selectedPosition = getSelectedItemPosition();
if (selectedPosition >= 0 && mAdapter != null && selectedPosition < mAdapter.getCount()) {
// Try looking in the recycler. (Maybe we were measured once already)
View view = mRecycler.get(selectedPosition);
if (view == null) {
// Make a new one
view = mAdapter.getView(selectedPosition, null, this);
}
if (view != null) {
// Put in recycler for re-measuring and/or layout
mRecycler.put(selectedPosition, view);
if (view.getLayoutParams() == null) {
mBlockLayoutRequests = true;
view.setLayoutParams(generateDefaultLayoutParams());
mBlockLayoutRequests = false;
}
measureChild(view, widthMeasureSpec, heightMeasureSpec);
preferredHeight = getChildHeight(view) + mSpinnerPadding.top + mSpinnerPadding.bottom;
preferredWidth = getChildWidth(view) + mSpinnerPadding.left + mSpinnerPadding.right;
needsMeasuring = false;
}
}
if (needsMeasuring) {
// No views -- just use padding
preferredHeight = mSpinnerPadding.top + mSpinnerPadding.bottom;
if (widthMode == MeasureSpec.UNSPECIFIED) {
preferredWidth = mSpinnerPadding.left + mSpinnerPadding.right;
}
}
preferredHeight = Math.max(preferredHeight, getSuggestedMinimumHeight());
preferredWidth = Math.max(preferredWidth, getSuggestedMinimumWidth());
heightSize = ViewCompat.resolveSizeAndState(preferredHeight, heightMeasureSpec, 0);
widthSize = ViewCompat.resolveSizeAndState(preferredWidth, widthMeasureSpec, 0);
setMeasuredDimension(widthSize, heightSize);
mHeightMeasureSpec = heightMeasureSpec;
mWidthMeasureSpec = widthMeasureSpec;
|
| public void | onRestoreInstanceState(android.os.Parcelable state)
SavedState ss = (SavedState) state;
super.onRestoreInstanceState(ss.getSuperState());
if (ss.selectedId >= 0) {
mDataChanged = true;
mNeedSync = true;
mSyncRowId = ss.selectedId;
mSyncPosition = ss.position;
mSyncMode = SYNC_SELECTED_POSITION;
requestLayout();
}
|
| public android.os.Parcelable | onSaveInstanceState()
Parcelable superState = super.onSaveInstanceState();
SavedState ss = new SavedState(superState);
ss.selectedId = getSelectedItemId();
if (ss.selectedId >= 0) {
ss.position = getSelectedItemPosition();
} else {
ss.position = INVALID_POSITION;
}
return ss;
|
| public int | pointToPosition(int x, int y)Maps a point to a position in the list.
Rect frame = mTouchFrame;
if (frame == null) {
mTouchFrame = new Rect();
frame = mTouchFrame;
}
final int count = getChildCount();
for (int i = count - 1; i >= 0; i--) {
View child = getChildAt(i);
if (child.getVisibility() == View.VISIBLE) {
child.getHitRect(frame);
if (frame.contains(x, y)) {
return mFirstPosition + i;
}
}
}
return INVALID_POSITION;
|
| void | recycleAllViews()
final int childCount = getChildCount();
final AbsSpinnerCompat.RecycleBin recycleBin = mRecycler;
final int position = mFirstPosition;
// All views go in recycler
for (int i = 0; i < childCount; i++) {
View v = getChildAt(i);
int index = position + i;
recycleBin.put(index, v);
}
|
| public void | requestLayout()Override to prevent spamming ourselves with layout requests
as we place views
if (!mBlockLayoutRequests) {
super.requestLayout();
}
|
| void | resetList()Clear out all children from the list
mDataChanged = false;
mNeedSync = false;
removeAllViewsInLayout();
mOldSelectedPosition = INVALID_POSITION;
mOldSelectedRowId = INVALID_ROW_ID;
setSelectedPositionInt(INVALID_POSITION);
setNextSelectedPositionInt(INVALID_POSITION);
invalidate();
|
| public void | setAdapter(android.widget.SpinnerAdapter adapter)The Adapter is used to provide the data which backs this Spinner.
It also provides methods to transform spinner items based on their position
relative to the selected item.
if (null != mAdapter) {
mAdapter.unregisterDataSetObserver(mDataSetObserver);
resetList();
}
mAdapter = adapter;
mOldSelectedPosition = INVALID_POSITION;
mOldSelectedRowId = INVALID_ROW_ID;
if (mAdapter != null) {
mOldItemCount = mItemCount;
mItemCount = mAdapter.getCount();
checkFocus();
mDataSetObserver = new AdapterDataSetObserver();
mAdapter.registerDataSetObserver(mDataSetObserver);
int position = mItemCount > 0 ? 0 : INVALID_POSITION;
setSelectedPositionInt(position);
setNextSelectedPositionInt(position);
if (mItemCount == 0) {
// Nothing selected
checkSelectionChanged();
}
} else {
checkFocus();
resetList();
// Nothing selected
checkSelectionChanged();
}
requestLayout();
|
| public void | setSelection(int position, boolean animate)Jump directly to a specific item in the adapter data.
// Animate only if requested position is already on screen somewhere
boolean shouldAnimate = animate && mFirstPosition <= position &&
position <= mFirstPosition + getChildCount() - 1;
setSelectionInt(position, shouldAnimate);
|
| public void | setSelection(int position)
setNextSelectedPositionInt(position);
requestLayout();
invalidate();
|
| void | setSelectionInt(int position, boolean animate)Makes the item at the supplied position selected.
if (position != mOldSelectedPosition) {
mBlockLayoutRequests = true;
int delta = position - mSelectedPosition;
setNextSelectedPositionInt(position);
layout(delta, animate);
mBlockLayoutRequests = false;
}
|
