private void replaceFolderWithFinalItem() {
// Add the last remaining child to the workspace in place of the folder
Runnable onCompleteRunnable =
new Runnable() {
@Override
public void run() {
CellLayout cellLayout = mLauncher.getCellLayout(mInfo.container, mInfo.screenId);
View child = null;
// Move the item from the folder to the workspace, in the position of the folder
if (getItemCount() == 1) {
ShortcutInfo finalItem = mInfo.contents.get(0);
child = mLauncher.createShortcut(R.layout.application, cellLayout, finalItem);
LauncherModel.addOrMoveItemInDatabase(
mLauncher, finalItem, mInfo.container, mInfo.screenId, mInfo.cellX, mInfo.cellY);
}
if (getItemCount() <= 1) {
// Remove the folder
LauncherModel.deleteItemFromDatabase(mLauncher, mInfo);
if (cellLayout != null) {
// b/12446428 -- sometimes the cell layout has already gone away?
cellLayout.removeView(mFolderIcon);
}
if (mFolderIcon instanceof DropTarget) {
mDragController.removeDropTarget((DropTarget) mFolderIcon);
}
mLauncher.removeFolder(mInfo);
}
// We add the child after removing the folder to prevent both from existing at
// the same time in the CellLayout. We need to add the new item with
// addInScreenFromBind()
// to ensure that hotseat items are placed correctly.
if (child != null) {
mLauncher
.getWorkspace()
.addInScreenFromBind(
child,
mInfo.container,
mInfo.screenId,
mInfo.cellX,
mInfo.cellY,
mInfo.spanX,
mInfo.spanY);
}
}
};
View finalChild = getItemAt(0);
if (finalChild != null) {
mFolderIcon.performDestroyAnimation(finalChild, onCompleteRunnable);
} else {
onCompleteRunnable.run();
}
mDestroyed = true;
}
/** 用最后一个剩余的item代替当前folder显示在桌面上，这发生在Folder里面只有一个item的时候 */
private void replaceFolderWithFinalItem() {
Runnable onCompleteRunnable =
new Runnable() {
@Override
public void run() {
CellLayout cellLayout = mLauncher.getCellLayout(mInfo.container, mInfo.screen);
View child = null;
// 将最后一个item从Folder移动到桌面上，与Folder一个位置。
// 但是在这个if块里面并没有实际移动，而仅仅是生成数据并放到了数据库中。
if (getItemCount() == 1) {
ShortcutInfo finalItem = mInfo.contents.get(0);
child = mLauncher.createShortcut(R.layout.application, cellLayout, finalItem);
LauncherModel.addOrMoveItemInDatabase(
mLauncher, finalItem, mInfo.container, mInfo.screen, mInfo.cellX, mInfo.cellY);
}
if (getItemCount() <= 1) {
// 删除Folder
LauncherModel.deleteItemFromDatabase(mLauncher, mInfo);
cellLayout.removeView(mFolderIcon);
if (mFolderIcon instanceof DropTarget) {
mDragController.removeDropTarget((DropTarget) mFolderIcon);
}
mLauncher.removeFolder(mInfo);
}
// 在删除文件夹后才添加最后一个item到桌面，这是为了防止在同一时间同一位置有两个item
if (child != null) {
mLauncher
.getWorkspace()
.addInScreen(
child,
mInfo.container,
mInfo.screen,
mInfo.cellX,
mInfo.cellY,
mInfo.spanX,
mInfo.spanY);
}
}
};
View finalChild = getItemAt(0);
if (finalChild != null) {
// 文件夹销毁动画
mFolderIcon.performDestroyAnimation(finalChild, onCompleteRunnable);
}
mDestroyed = true;
}