2014.01.10 ——— android listview 记录和恢复位置
2014.01.10 ——— android listview 记录和恢复位置
参考:http://stackoverflow.com/questions/3014089/maintain-save-restore-scroll-position-when-returning-to-a-listview
首先网上流行的方法http://www.linuxidc.com/Linux/2012-04/58601.htm,如这篇文章里面说的,第二种方法不精确,而第一种方法我试了不管用,getScrollX和getScrollY一直都是返回0的
靠谱的方法:
1、
private Parcelable mPositionState;....if(mPositionState==null){ mPositionState=mVideoList.onSaveInstanceState(); }else{ mVideoList.onRestoreInstanceState(mPositionState);}....@Overridepublic void onScrollStateChanged(AbsListView view, int scrollState) { if (scrollState == OnScrollListener.SCROLL_STATE_IDLE) { mPositionState=mVideoList.onSaveInstanceState(); } }
private int mPosition; private int mPositionTop;... @Override public void onScrollStateChanged(AbsListView view, int scrollState) { if (scrollState == OnScrollListener.SCROLL_STATE_IDLE) { mPosition = mVideoList.getFirstVisiblePosition(); View v = mVideoList.getChildAt(0); mPositionTop = (v == null) ? 0 : v.getTop(); } }..... //这个更精确,第二个参数表示当前position的top值 mVideoList.setSelectionFromTop(mPosition, mPositionTop);