Android 如何停止从底部计算列表视图的位置。？

我有16个项目的列表视图，所有视图都在活动开始时创建完美。当“活动开始”列表视图从顶部以零位置开始时。当我平滑滚动时，所有视图保持原样。但我的问题是，当列表视图到达最后一个位置并试图使劲拉它时，它就开始从底部开始计数。这意味着它取第16位为0（零）

我正在用文本视图的文本值更新我的上三视图。当活动完美开始工作时，但如上所述，当到达最后一个位置或硬拉我的列表视图时，它开始从下创建视图，并在下三视图中设置上三视图的值

这是我的适配器获取视图代码

  @Override
 public View getView( int position, View convertView, ViewGroup parent)
 { 

  sharedpreferences = context.getSharedPreferences("ua_animation", Context.MODE_PRIVATE);
  sharedPreferences = context.getSharedPreferences(MyPREFERENCESS, Context.MODE_PRIVATE);
  Holder holder = null;
  c = unlock_animation.b;  
      sharedPreferences.edit().putInt("u_anim", c).commit();
      b1 = sharedPreferences.getInt("u_anim", 0);
      sharedPreferences.edit().putInt("sto_time", sc  reen_time_out.pt).commit();

      i4 = sharedPreferences.getInt("ptm", 0);
      i2 = sharedPreferences.getInt("switch_key", 0);
      if(i2 == 1){  tgpref = true; }else { tgpref = false; }

  LayoutInflater mInflater = (LayoutInflater) context.getSystemService(Activity.LAYOUT_INFLATER_SERVICE);

    //convertView = null;

    if(convertView == null){

        convertView = mInflater.inflate(R.layout.screenlock_adapter, parent,false);

        holder = new Holder();      
        holder.htv = (TextView) convertView.findViewById(R.id.scl_tv);
        holder.himg = (ImageView) convertView.findViewById(R.id.scl_img);
        holder.hsw = (Switch) convertView.findViewById(R.id.scl_sw);
        holder.hdesc = (TextView) convertView.findViewById(R.id.scl_desc);        
        convertView.setTag(holder);               
    } else{                     
        holder = (Holder) convertView.getTag();
    }      


    if(position == 0){

    holder.htv.setText(Listitem[position]);        
    holder.hdesc.setVisibility(View.GONE);
    holder.hsw.setVisibility(View.GONE);
    Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);    

    }
    if(position == 1){            

        holder.htv.setText(Listitem[position]);            
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        holder.hsw.setVisibility(View.VISIBLE);            
        //holder.himg.setVisibility(View.GONE);


        holder.hsw.setOnCheckedChangeListener(new OnCheckedChangeListener() {

            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                // do something, the isChecked will be
                // true if the switch is in the On position
                 if(isChecked ){

                    posi = 1; 
                    s.setValues(1);

                    }else{
                        posi = 0;
                        s.setValues(0);

                    }
            }
        });
        if(tgpref){
            holder.hsw.setChecked(true);

        }else
        {
            holder.hsw.setChecked(false);               
        }

    }
    if(position == 2){

        holder.htv.setText(Listitem[position]);
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        holder.hsw.setVisibility(View.GONE);
        i1 = sharedPreferences.getInt("value", 0);
        switch(i1){

        case 1:
            holder.hdesc.setText("shake");
            break;
        case 2:
            holder.hdesc.setText("single tap");
            break;
        case 3:
            holder.hdesc.setText("Double tap");
            break;
        }

    }
    if(position == 3){

        holder.htv.setText(Listitem[position]);
        holder.hdesc.setVisibility(View.GONE);
        holder.hsw.setVisibility(View.GONE);
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        holder.himg.setVisibility(View.VISIBLE);

    }
    if(position == 4){

        holder.htv.setText(Listitem[position]);
        holder.hdesc.setVisibility(View.GONE);
        holder.hsw.setVisibility(View.VISIBLE);
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        //holder.himg.setVisibility(View.GONE);
        holder.hsw.setOnCheckedChangeListener(new OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                // TODO Auto-generated method stub
                if(isChecked ){

                 vibratorv = 1;
                    v.setValue(1);

                    }else{
                    vibratorv = 0;
                        v.setValue(0);
                    }
                }
        });
        if(vbool){
            holder.hsw.setChecked(true);                
        }else{
            holder.hsw.setChecked(false);
        }
    }
    if(position == 5){

        holder.htv.setText(Listitem[position]);
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        holder.hsw.setVisibility(View.GONE);
        holder.hdesc.setText(R.string.desc);

    }
    if(position == 6){

        holder.htv.setText(Listitem[position]);  
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        holder.hdesc.setVisibility(View.VISIBLE);
        holder.hsw.setVisibility(View.GONE);

        if(i5 == 0){holder.hdesc.setText("Default");}
        if(i5 == 1){holder.hdesc.setText("0s");}
        if(i5 == 2){holder.hdesc.setText("3s");}
        if(i5 == 3){holder.hdesc.setText("5s");}
        if(i5 == 4){holder.hdesc.setText("15s");}
        if(i5 == 5){holder.hdesc.setText("30s");}
        if(i5 == 6){holder.hdesc.setText("1m");}

    }
    if(position == 7){

        Toast.makeText(context, "i4 : "+i4, Toast.LENGTH_SHORT).show();
        holder.htv.setText(Listitem[position]);
        holder.hdesc.setVisibility(View.VISIBLE);           
        holder.hsw.setVisibility(View.GONE);        
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        if(i4 == 0){holder. hdesc.setText("Default");}
        if(i4 == 1){holder.hdesc.setText("0s");}
        if(i4 == 2){holder.hdesc.setText("3s");}
        if(i4 == 3){holder.hdesc.setText("5s");}
        if(i4 == 4){holder.hdesc.setText("15s");}
        if(i4 == 5){holder.hdesc.setText("30s");}
        if(i4 == 6){holder.hdesc.setText("1m");}

    }

    if(position == 8){

        holder.htv.setText(Listitem[position]);
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        holder.hsw.setVisibility(View.GONE);            
        switch(b1){

        case 0:
            holder.hdesc.setText("None");       
            break;
        case 1:
            holder.hdesc.setText("Rotate");
            break;
        case 2:
            holder.hdesc.setText("Fade");
            break;
        case 3:
            holder.hdesc.setText("Zoom");
            break;
        case 4:
            holder.hdesc.setText("Bounce");
            break;
        case 5:
            holder.hdesc.setText("Blink");
            break;
        }

    }
    if(position == 9){
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        holder.htv.setText(Listitem[position]);
        holder.hsw.setVisibility(View.GONE);
        holder.hdesc.setText(R.string.desc);


    }
    if(position == 10){

        holder.htv.setText(Listitem[position]);
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        //holder.himg.setVisibility(View.GONE);         
        holder.hdesc.setVisibility(View.GONE);
        holder.hsw.setVisibility(View.VISIBLE);


        holder.hsw.setOnCheckedChangeListener(new OnCheckedChangeListener() {

            @Override
            public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                // TODO Auto-generated method stub
                if(isChecked ){

                 //sb = "1";
                    sb.setstatusbar(1);

                    }else{
                   // sb = "0";
                        sb.setstatusbar(0);
                    }
                }
        });
        if(statusbool){
            holder.hsw.setChecked(true);                
        }else{
            holder.hsw.setChecked(false);
        }

    }
    if(position ==11){

        holder.htv.setText(Listitem[position]);
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        holder.hdesc.setVisibility(View.GONE);
        holder.hsw.setVisibility(View.GONE);


    }
    if(position == 12){

        holder.htv.setText(Listitem[position]);         
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        holder.hdesc.setVisibility(View.GONE);
        holder.hsw.setVisibility(View.GONE);


    }
    if(position == 13){

        holder.htv.setText(Listitem[position]);                 
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        holder.hdesc.setVisibility(View.VISIBLE);
        holder.hsw.setVisibility(View.GONE);

    }
    if(position == 14){

        holder.htv.setText(Listitem[position]);         
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        holder.hdesc.setVisibility(View.GONE);
        holder.hsw.setVisibility(View.GONE);

    }
    if(position == 15){

        holder.htv.setText(Listitem[position]);         
        Picasso.with(this.context).load(R.drawable.dir_arrow).into(holder.himg);
        holder.hdesc.setVisibility(View.GONE);
        holder.hsw.setVisibility(View.GONE);

    }

    return convertView;

  }

 public void posi(){
     sharedpreferences.edit().putInt("ua_anim", unlock_animation.b).commit();
     bc = sharedpreferences.getInt("ua_anim", 0);
    }
 } 

---

最后我得到了我的问题解决方案。我将视图转换为常量值null

convertview=null和“活动”中，我正在使用此方法更新列表视图适配器

private void updateData() {

  runOnUiThread(new Runnable() {
      @Override
      public void run() {
              ((BaseAdapter) adapter).notifyDataSetChanged();
     }
  });
}

当我从其他活动接收数据时调用此方法
 能否在适配器中显示一个方法：getCount（）？getItem（int position）和long getItemId（int position）…如果（position==x）

在

getView

中几乎总是一个坏主意。。。此外，您没有“重置”所有情况下的视图。。。你知道在ListView中回收是如何工作的吗？不还有@selvin，这是我的get count方法。public int getCount（）{return Listitem.length；}未“重置”所有情况下的视图。。。如果（位置==2）{}您从未接触过

holder.hdesc

visibility。。。现在将回收添加到其中…我正在使用方法从活动中回收此视图@塞尔文