安卓手機的屏幕鏡像在哪，android view 屏幕外,安卓如何讓View往屏幕外隱藏？

以下兩種方案都親測可行：

方案一：(無動畫)

listView.setSelection(問題14的position);

方案二：(帶動畫)

ListView lvBaseList添加問題14后調用

安卓手機的屏幕鏡像在哪。final int targetPosition = 2;//假設你要置頂的ItemView的position = 2

final long targetId = adapter.getItemId(targetPosition);

View child = getTargetView(lvBaseList, targetId);

final boolean isVisible = child != null;

if (isVisible) {//問題14已顯示

Log.d(TAG, "lvBaseList.onItemClick isVisible = true >> ");

安卓自定義view的步驟。Log.d(TAG, "lvBaseList.onItemClick lvBaseList.getY() = " + (int) lvBaseList.getY());

Log.d(TAG, "lvBaseList.onItemClick child.getY() = " + (int) child.getY());

lvBaseList.smoothScrollBy((int) (child.getY() - lvBaseList.getY()), 200);

return;

}

//問題14未顯示

安卓開發findview、Log.d(TAG, "lvBaseList.onItemClick isVisible = false >> ");

lvBaseList.smoothScrollToPosition(targetPosition + lvBaseList.getHeaderViewsCount());

lvBaseList.setOnScrollListener(new OnScrollListener() {

@Override

public void onScrollStateChanged(AbsListView view, int scrollState) {

if (scrollState == SCROLL_STATE_IDLE) {

android view。lvBaseList.setOnScrollListener(null);//避免影響正常滾動

View child = getTargetView(lvBaseList, targetId);

if (child == null) {

Log.e(TAG, "lvBaseList.onItemClick child == null >> return;");

return;

}

android。Log.d(TAG, "lvBaseList.onItemClick lvBaseList.getY() = " + (int) lvBaseList.getY());

Log.d(TAG, "lvBaseList.onItemClick child.getY() = " + (int) child.getY());

// lvBaseList.scrollListBy((int) (child.getY() - lvBaseList.getY()));//可行，無動畫

lvBaseList.smoothScrollBy((int) (child.getY() - lvBaseList.getY()), 200);

}

}

android自定義view的三大流程。@Override

public void onScroll(AbsListView view, int firstVisibleItem, int visibleItemCount, int totalItemCount) {

}

});

需要用到的函數：

//根據targetId獲取childView

android cardview？private View getTargetView(ListView lvBaseList, long targetId) {

View child = null;

MomentView itemView;//MomentView相當于ViewHolder，里面存放item數據或者itemId

MomentItem item;

for (int i = 0; i < lvBaseList.getChildCount(); i++) {

child = lvBaseList.getChildAt(i);

android 自定義view、itemView = child == null ? null : (MomentView) child.getTag();

item = itemView == null ? null : itemView.getData();

Log.d(TAG, "lvBaseList.onItemClick item.getId() = " + (item == null ? 0 : item.getId()) + "; targetId = " + targetId);

if (item != null && item.getId() == targetId) {

Log.d(TAG, "lvBaseList.onItemClick item != null && item.getId() == targetId >> break;");

break;

android textview？}

child = null;

}

return child;

}