ListView中诡异的问题。大家帮帮忙，谢谢啦。

Question

HI all,我在listView中监听onTouch事件，当事件发生时对焦点所在列表项进行动画操作，运行结果：焦点所在的列表项按我的想法显示了结果，但是奇怪的是，与焦点所在的列表项相差6的没有显示的列表项也产生了动画效果，这是为什么呢

Answer 1

关键代码,onTouch事件:
private void postListAnimation(int aPos, ListView aLv) {
Log.i("Life==", "goto_postListAnimation_"+String.valueOf(aPos));
int firstVisiblePosition = aLv.getFirstVisiblePosition();
RelativeLayout nRelative = (RelativeLayout) aLv.getChildAt(aPos
- firstVisiblePosition); 
PostItemView nPview=(PostItemView)nRelative.getTag();
if (nRelative != null) {
LinearLayout nDoLinear = nPview.mLinear;
if (nDoLinear == null)
return;
boolean nShow = false;
if (nDoLinear.getVisibility() == View.GONE)
nShow = true;
RelativeLayout.LayoutParams nLp = (RelativeLayout.LayoutParams) nDoLinear
.getLayoutParams();
LinearLayout nInfoLinear = nPview.mLinearInfo;// .findViewById(R.id.linear_info);
if (nInfoLinear == null)
return;
nLp.height = nInfoLinear.getHeight();
nDoLinear.setLayoutParams(nLp); 
float nDoSx = -1.0f, nDoMx = 0.0f, nInfoSx = 0.0f, nInfoMx = 0.45f;
if (!nShow) {
nInfoSx = 0.45f;
nInfoMx = 0.0f;
nDoSx = 0.0f;
nDoMx = -1.0f;
} TranslateAnimation nDoLinearTa = new TranslateAnimation(
Animation.RELATIVE_TO_SELF, nDoSx,
Animation.RELATIVE_TO_SELF, nDoMx,
Animation.RELATIVE_TO_SELF, 0.0f,
Animation.RELATIVE_TO_SELF, 0.0f);
nDoLinearTa.setDuration(150); 
nDoLinearTa.setFillAfter(true);

/*
 * Button nBtnApp=(Button)nDoLinear.findViewById(R.id.btn_app);
 * Button nBtnCol=(Button)nDoLinear.findViewById(R.id.btn_col);
 */
TranslateAnimation nInfoLinearTa = new TranslateAnimation(
Animation.RELATIVE_TO_SELF, nInfoSx,
Animation.RELATIVE_TO_SELF, nInfoMx,
Animation.RELATIVE_TO_SELF, 0.0f,
Animation.RELATIVE_TO_SELF, 0.0f);
nInfoLinearTa.setDuration(150); 
nInfoLinearTa.setFillAfter(true);
if (mLastLinear != null)
mLastLinear.clearAnimation();
if (mLastDoLinear != null) {
mLastDoLinear.setVisibility(View.GONE);
mLastDoLinear.clearAnimation();
}
if (nShow) {
nDoLinear.setVisibility(View.VISIBLE); } else { }
mLastLinear = nInfoLinear;
mLastDoLinear = nDoLinear;
nInfoLinear.startAnimation(nInfoLinearTa);
nDoLinear.startAnimation(nDoLinearTa); 
} }=============================================
适配器getView:
public View getView(int position, View convertView, ViewGroup parent) { 
mMark=false;
Log.i("Life==", "goto_getView_"+String.valueOf(position));
if (convertView == null){
convertView = mFty.inflate(this.mAdptType, null); 
mMark=true;
}

switch (this.mAdptType) {
case R.layout.postitemlist: {
PostItemView nPv;
PostNode nNode = (PostNode) this.mAdpt.get(position); 
if (convertView.getTag() == null) { 
nPv=new PostItemView(); 
nPv.mTvName = (TextView) convertView
.findViewById(R.id.tv_post); 
nPv.mTvCpy = (TextView) convertView
.findViewById(R.id.tv_cpy); 
nPv.mTvDate = (TextView) convertView
.findViewById(R.id.tv_date); 
nPv.mTvArea = (TextView) convertView
.findViewById(R.id.tv_area); 
nPv.mBtnApp = (Button) convertView
.findViewById(R.id.btn_app); 
nPv.mBtnCol = (Button) convertView
.findViewById(R.id.btn_col); 
nPv.mLinear=(LinearLayout) convertView
.findViewById(R.id.do_layout);  
nPv.mLinearInfo=(LinearLayout) convertView
.findViewById(R.id.linear_info);
convertView.setTag(nPv);
}
else{
nPv=(PostItemView)convertView.getTag();
}
nPv.mTvName.setText(nNode.mPname); 
nPv.mTvCpy.setText(nNode.mPcpy);
nPv.mTvDate.setText(nNode.mPdate);
nPv.mTvArea.setText(nNode.mParea);
nPv.mBtnApp.setTag(String.valueOf(position));
nPv.mBtnApp.setOnClickListener(this.mOnClickListener);
nPv.mBtnCol.setTag(String.valueOf(position));
nPv.mBtnCol.setOnClickListener(this.mOnClickListener);  
break;
}
}