public void onDropCompleted(View target, DragObject d, boolean isFlingToDelete, boolean success) {
if (success) {
if (mDeleteFolderOnDropCompleted && !mItemAddedBackToSelfViaIcon) {
replaceFolderWithFinalItem();
}
} else {
// 拖动失败，将item还给folder。这是由Folder向外拖出时调用的
mFolderIcon.onDrop(d);
// TODO
// We're going to trigger a "closeFolder" which may occur before
// this item has
// been added back to the folder -- this could cause the folder to
// be deleted
if (mOnExitAlarm.alarmPending()) {
mSuppressFolderDeletion = true;
}
}
if (target != this) {
if (mOnExitAlarm.alarmPending()) {
mOnExitAlarm.cancelAlarm();
completeDragExit();
}
}
mDeleteFolderOnDropCompleted = false;
mDragInProgress = false;
mItemAddedBackToSelfViaIcon = false;
mCurrentDragInfo = null;
mCurrentDragView = null;
mSuppressOnAdd = false;
// 可能要重新排序，保存到数据库中
updateItemLocationsInDatabase();
}
public void onDragExit(DragObject d) {
// 只有是一个真正的drag拖出才关闭文件夹，比如说，在文件夹上放下dragview不是退出drag
if (!d.dragComplete) {
mOnExitAlarm.setOnAlarmListener(mOnExitAlarmListener);
mOnExitAlarm.setAlarm(ON_EXIT_CLOSE_DELAY);
}
mReorderAlarm.cancelAlarm();
}
/*
* 拖动结束
*/
public void onDragOver(DragObject d) {
float[] r = getDragViewVisualCenter(d.x, d.y, d.xOffset, d.yOffset, d.dragView, null);
mTargetCell = mContent.findNearestArea((int) r[0], (int) r[1], 1, 1, mTargetCell);
if (mTargetCell[0] != mPreviousTargetCell[0] || mTargetCell[1] != mPreviousTargetCell[1]) {
mReorderAlarm.cancelAlarm();
mReorderAlarm.setOnAlarmListener(mReorderAlarmListener);
mReorderAlarm.setAlarm(150);
mPreviousTargetCell[0] = mTargetCell[0];
mPreviousTargetCell[1] = mTargetCell[1];
}
}
public void onDragEnter(DragObject d) {
mPreviousTargetCell[0] = -1;
mPreviousTargetCell[1] = -1;
mOnExitAlarm.cancelAlarm();
}