下面列出了android.view.View#getBottom ( ) 实例代码，或者点击链接到github查看源代码，也可以在右侧发表评论。
/**
* 滑动监听
* @param recyclerView
* @param dx
* @param dy
*/
@Override
public void onScrolled(RecyclerView recyclerView, int dx, int dy) {
LayoutManager layoutManager = recyclerView.getLayoutManager();
if (layoutManager instanceof LinearLayoutManager) {
LinearLayoutManager linearLayout = (LinearLayoutManager) layoutManager;
int mLastChildPosition = linearLayout.findLastVisibleItemPosition();
int itemTotalCount = linearLayout.getItemCount();
View lastChildView = linearLayout.getChildAt(linearLayout.getChildCount() - 1);
int lastChildBottom = lastChildView.getBottom();
int recyclerBottom = getBottom();
if (mLastChildPosition == itemTotalCount - 1 && lastChildBottom == recyclerBottom) {
if (isCanLoadMore && listener != null) {
//业务代码
listener.loadMore();
}
}
}
}
private void onLayoutSelect2(final boolean changed, final int left, final int top, final int right, final int bottom) {
// if (DEBUG) Log.v(TAG, "onLayoutSelect2:");
final View ch1 = mFlipChildPos ? mChild2 : mChild1;
final View ch2 = mFlipChildPos ? mChild1 : mChild2;
final int paddingLeft = getPaddingLeft();
final int paddingTop = getPaddingTop();
callChildLayout(ch2, changed, left - paddingLeft, top - paddingTop, right - paddingLeft, bottom - paddingTop);
if (mEnableSubWindow) {
// child1の位置はchild2の左下か右上
final int _left = ch2.getLeft();
final int _top = ch2.getTop();
final int _right = ch2.getRight();
final int _bottom = ch2.getBottom();
final int w = ch1.getMeasuredWidth(); // int)((right - left) * mSubWindowScale);
final int h = ch1.getMeasuredHeight(); // int)((bottom - top) * mSubWindowScale);
switch (mOrientation) {
case VERTICAL:
callChildLayout(ch1, changed, _right - w, _top, _right, _top + h);
break;
// case HORIZONTAL:
default:
callChildLayout(ch1, changed, _left, _bottom - h, _left + w, _bottom);
break;
}
}
}
private int findMotionHeader(float y) {
if (mStickiedHeader != null && y <= mHeaderBottomPosition) {
return MATCHED_STICKIED_HEADER;
}
int vi = 0;
for (int i = getFirstVisiblePosition(); i <= getLastVisiblePosition();) {
long id = getItemIdAtPosition(i);
if (id == StickyGridHeadersBaseAdapterWrapper.ID_HEADER) {
View headerWrapper = getChildAt(vi);
int bottom = headerWrapper.getBottom();
int top = headerWrapper.getTop();
if (y <= bottom && y >= top) {
return vi;
}
}
i += mNumMeasuredColumns;
vi += mNumMeasuredColumns;
}
return NO_MATCHED_HEADER;
}
private void drawHorizontal(Canvas canvas, RecyclerView parent) {
final int left = parent.getPaddingLeft();
final int right = parent.getMeasuredWidth() - parent.getPaddingRight();
final int childSize = parent.getChildCount();
for (int i = 0; i < childSize; i++) {
final View child = parent.getChildAt(i);
RecyclerView.LayoutParams layoutParams = (RecyclerView.LayoutParams) child.getLayoutParams();
final int top = child.getBottom() + layoutParams.bottomMargin;
final int bottom = top + mDividerHeight;
if (mDivider != null) {
mDivider.setBounds(left, top, right, bottom);
mDivider.draw(canvas);
}
if (mPaint != null) {
canvas.drawRect(left, top, right, bottom, mPaint);
}
}
}
@Override
public void onChildDraw(Canvas c, RecyclerView recyclerView, BaseSectionAdapter.ItemViewHolder viewHolder, float dX, float dY, int actionState, boolean isCurrentlyActive) {
View itemView = viewHolder.itemView;
int itemHeight = itemView.getBottom() - itemView.getTop();
background.setColor(color);
background.setBounds((int) (itemView.getRight() + dX), itemView.getTop(), itemView.getRight(), itemView.getBottom());
background.draw(c);
int deleteIconTop = itemView.getTop() + (itemHeight - deleteIcon.getIntrinsicHeight()) / 2;
int deleteIconMargin = (itemHeight - deleteIcon.getIntrinsicHeight()) / 2;
int deleteIconLeft = itemView.getRight() - deleteIconMargin - deleteIcon.getIntrinsicWidth();
int deleteIconRight = itemView.getRight() - deleteIconMargin;
int deleteIconBottom = deleteIconTop + deleteIcon.getIntrinsicHeight();
deleteIcon.setBounds(deleteIconLeft, deleteIconTop, deleteIconRight, deleteIconBottom);
deleteIcon.draw(c);
super.onChildDraw(c, recyclerView, viewHolder, dX, dY, actionState, isCurrentlyActive);
}
public void drawVertical(Canvas c, RecyclerView parent) {
final int left = parent.getPaddingLeft();
final int right = parent.getWidth() - parent.getPaddingRight();
final int childCount = parent.getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = parent.getChildAt(i);
android.support.v7.widget.RecyclerView v = new android.support.v7.widget.RecyclerView(parent.getContext());
final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
.getLayoutParams();
final int top = child.getBottom() + params.bottomMargin;
final int bottom = top + mDivider.getIntrinsicHeight();
mDivider.setBounds(left, top, right, bottom);
mDivider.draw(c);
}
}
public void drawVertical(Canvas c, RecyclerView parent) {
final int left = parent.getPaddingLeft();
final int right = parent.getWidth() - parent.getPaddingRight();
final int childCount = parent.getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = parent.getChildAt(i);
final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
.getLayoutParams();
final int top = child.getBottom() + params.bottomMargin +
Math.round(ViewCompat.getTranslationY(child));
final int bottom = top + mDivider.getIntrinsicHeight();
mDivider.setBounds(left, top, right, bottom);
mDivider.draw(c);
}
}
@Override
public void onDrawOver(Canvas c, RecyclerView parent, RecyclerView.State state) {
super.onDrawOver(c, parent, state);
final int childCount = parent.getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = parent.getChildAt(i);
if (child.getWidth() == ScreenUtil.getDisplayWidth()) {
continue;
}
final int left = child.getLeft();
final int right = child.getRight();
final int top = child.getTop();
final int bottom = child.getBottom();
c.drawRect(left, bottom - dividerSize, right, bottom, paint);
c.drawRect(right - dividerSize, top, right, bottom, paint);
}
}
private int getTargetY() {
final int first = getFirstVisiblePosition();
final int otherAdjust = (mItemHeightCollapsed + getDividerHeight()) / 2;
View v = getChildAt(mDropPos - first);
int targetY = -1;
if (v != null) {
if (mDropPos == srcPos) {
targetY = v.getTop();
} else if (mDropPos < srcPos) {
// expanded down
targetY = v.getTop() - otherAdjust;
} else {
// expanded up
targetY = v.getBottom() + otherAdjust - mFloatViewHeight;
}
} else {
// drop position is not on screen?? no animation
cancel();
}
return targetY;
}
protected boolean canScroll(View v, boolean checkV, int dy, int x, int y) {
if (v instanceof ViewGroup) {
ViewGroup group = (ViewGroup) v;
int scrollX = v.getScrollX();
int scrollY = v.getScrollY();
for (int i = group.getChildCount() - 1; i >= 0; i--) {
View child = group.getChildAt(i);
if (x + scrollX >= child.getLeft() && x + scrollX < child.getRight() && y + scrollY >= child.getTop() && y + scrollY < child.getBottom()) {
if (canScroll(child, true, dy, (x + scrollX) - child.getLeft(), (y + scrollY) - child.getTop())) {
return true;
}
}
}
}
return checkV && ViewCompat.canScrollVertically(v, -dy);
}
@Override
public void run() {
mCurrentScrollState = mNewState;
// Fix the position after a scroll or a fling ends
if (mNewState == AbsListView.OnScrollListener.SCROLL_STATE_IDLE && mPreviousScrollState != AbsListView.OnScrollListener.SCROLL_STATE_IDLE && mPreviousScrollState != AbsListView.OnScrollListener.SCROLL_STATE_TOUCH_SCROLL) {
mPreviousScrollState = mNewState;
int i = 0;
View child = getChildAt(i);
while(child != null && child.getBottom() <= 0)
child = getChildAt(++i);
if (child == null)
return;
int firstPosition = getFirstVisiblePosition();
int lastPosition = getLastVisiblePosition();
boolean scroll = firstPosition != 0 && lastPosition != getCount() - 1;
final int top = child.getTop();
final int bottom = child.getBottom();
final int midpoint = getHeight() / 2;
if (scroll && top < LIST_TOP_OFFSET) {
if (bottom > midpoint)
smoothScrollBy(top, SCROLL_DURATION);
else
smoothScrollBy(bottom, SCROLL_DURATION);
}
}
else
mPreviousScrollState = mNewState;
}
/**
* Determine if the supplied view is under the given point in the
* parent view's coordinate system.
*
* @param view Child view of the parent to hit test
* @param x X position to test in the parent's coordinate system
* @param y Y position to test in the parent's coordinate system
* @return true if the supplied view is under the given point, false otherwise
*/
public boolean isViewUnder(View view, int x, int y) {
if (view == null) {
return false;
}
return x >= view.getLeft() &&
x < view.getRight() &&
y >= view.getTop() &&
y < view.getBottom();
}
/**
* Find the topmost child under the given point within the parent view's
* coordinate system. The child order is determined using
* {@link me.imid.swipebacklayout.lib.ViewDragHelper.Callback#getOrderedChildIndex(int)}
* .
*
* @param x X position to test in the parent's coordinate system
* @param y Y position to test in the parent's coordinate system
* @return The topmost child view under (x, y) or null if none found.
*/
public View findTopChildUnder(int x, int y) {
final int childCount = mParentView.getChildCount();
for (int i = childCount - 1; i >= 0; i--) {
final View child = mParentView.getChildAt(mCallback.getOrderedChildIndex(i));
if (x >= child.getLeft() && x < child.getRight() && y >= child.getTop()
&& y < child.getBottom()) {
return child;
}
}
return null;
}
private boolean isLastItemVisible() {
final Adapter adapter = mRefreshableView.getAdapter();
if (null == adapter || adapter.isEmpty()) {
if (DEBUG) {
Log.d(LOG_TAG, "isLastItemVisible. Empty View.");
}
return true;
} else {
final int lastItemPosition = mRefreshableView.getCount() - 1;
final int lastVisiblePosition = mRefreshableView.getLastVisiblePosition();
if (DEBUG) {
Log.d(LOG_TAG, "isLastItemVisible. Last Item Position: " + lastItemPosition + " Last Visible Pos: "
+ lastVisiblePosition);
}
/**
* This check should really just be: lastVisiblePosition ==
* lastItemPosition, but PtRListView internally uses a FooterView
* which messes the positions up. For me we'll just subtract one to
* account for it and rely on the inner condition which checks
* getBottom().
*/
if (lastVisiblePosition >= lastItemPosition - 1) {
final int childIndex = lastVisiblePosition - mRefreshableView.getFirstVisiblePosition();
final View lastVisibleChild = mRefreshableView.getChildAt(childIndex);
if (lastVisibleChild != null) {
return lastVisibleChild.getBottom() <= mRefreshableView.getBottom();
}
}
}
return false;
}
/**
* Determine if the supplied view is under the given point in the
* parent view's coordinate system.
*
* @param view Child view of the parent to hit test
* @param x X position to test in the parent's coordinate system
* @param y Y position to test in the parent's coordinate system
* @return true if the supplied view is under the given point, false otherwise
*/
public boolean isViewUnder(View view, int x, int y) {
if (view == null) {
return false;
}
return x >= view.getLeft() &&
x < view.getRight() &&
y >= view.getTop() &&
y < view.getBottom();
}
private boolean isViewInBounds(View view, float x, float y){
Rect outRect = new Rect(view.getLeft(), view.getTop(), view.getRight(), view.getBottom());
if(outRect.contains((int)x, (int)y))
{
return true;
}
return false;
}
@Nullable
private static View getAppBarChildOnOffset(
@NonNull final AppBarLayout layout, final int offset) {
final int absOffset = Math.abs(offset);
for (int i = 0, z = layout.getChildCount(); i < z; i++) {
final View child = layout.getChildAt(i);
if (absOffset >= child.getTop() && absOffset <= child.getBottom()) {
return child;
}
}
return null;
}
private boolean isKeyboardShown(View rootView) {
final int softKeyboardHeight = 100;
Rect r = new Rect();
// 获取根布局的可视区域r
rootView.getWindowVisibleDisplayFrame(r);
DisplayMetrics dm = rootView.getResources().getDisplayMetrics();
// 本来的实际底部距离 - 可视的底部距离
int heightDiff = rootView.getBottom() - r.bottom;
return heightDiff > softKeyboardHeight * dm.density;
}
public void drawVertical(Canvas c, RecyclerView parent) {
final int left = parent.getPaddingLeft();
final int right = parent.getWidth() - parent.getPaddingRight();
final int childCount = parent.getChildCount();
for (int i = 0; i < childCount; i++) {
final View child = parent.getChildAt(i);
final RecyclerView.LayoutParams params = (RecyclerView.LayoutParams) child
.getLayoutParams();
final int top = child.getBottom() + params.bottomMargin;
final int bottom = top + mDivider.getIntrinsicHeight();
mDivider.setBounds(left, top, right, bottom);
mDivider.draw(c);
}
}
@Override
protected void getEdgeVerticalPostion(int[] pos) {
View child = getChildAt(getPageCount() - 1);
pos[0] = child.getTop();
pos[1] = child.getBottom();
}