android-仿QQtab(8)

            break; 
        case R.id.tab3: 
            changeTop(layout3); 
            break; 
        default: 
            break; 
        } 
    } 
    private void changeTop(RelativeLayout relativeLayout){ 
        ImageView old = (ImageView) relativeLayout.findViewWithTag("first"); 
        select_width   =old.getWidth(); 
        select_height = old.getHeight(); 
        RelativeLayout.LayoutParams rl = new RelativeLayout.LayoutParams(select_width, select_height); 
        rl.leftMargin = old.getLeft()+((RelativeLayout)old.getParent()).getLeft(); 
        rl.topMargin = old.getTop()+((RelativeLayout)old.getParent()).getTop(); 
        // 获取起始位置  
        firstLeft = old.getLeft()+((RelativeLayout)old.getParent()).getLeft(); 
        ImageView iv = new ImageView(this); 
        iv.setTag("move"); 
        iv.setImageResource(R.drawable.topbar_select); 
        layout.addView(iv,rl); 
        relativeLayout.removeView(old); 
    } 
   private OnClickListener listener = new OnClickListener() { 
     
    @Override 
    public void onClick(View v) { 
        // TODO Auto-generated method stub  
        if(!isAdd){ 
            replace();// // 初次使用移除old 添加新的top_select为RelativeLayout所使用  
            isAdd = true; 
        } 
        ImageView top_select = (ImageView) layout.findViewWithTag("move"); 
        int tabLeft = 0; 
        int endLeft=0;