Android编程设置LayoutParams

        RelativeLayout.LayoutParams linearParams = (RelativeLayout.LayoutParams)viewHolder.headerWraper.getLayoutParams();
        RelativeLayout.LayoutParams textParams = (RelativeLayout.LayoutParams)viewHolder.textWrapper.getLayoutParams();
        
        linearParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT, 0); //清空alignParentRight参数
        textParams.addRule(RelativeLayout.ALIGN_LEFT, 0);           //清空toLeftOf参数
        
        if (fromToType == Constants.FromToType.FromToTypeFromThisUser.getValue()) { //根据条件设置Layout参数

            linearParams.addRule(RelativeLayout.ALIGN_PARENT_RIGHT);
            textParams.addRule(RelativeLayout.LEFT_OF, R.id.header_wrapper);
            
            viewHolder.headerWraper.setLayoutParams(linearParams);
            viewHolder.textWrapper.setLayoutParams(textParams);
            
            Logger.d(TAG, "from this user");
        }
        else{
            Logger.d(TAG, "from otehr user");
            
            linearParams.addRule(RelativeLayout.ALIGN_PARENT_LEFT);
            textParams.addRule(RelativeLayout.RIGHT_OF , R.id.header_wrapper);
            
            viewHolder.headerWraper.setLayoutParams(linearParams);
            viewHolder.textWrapper.setLayoutParams(textParams);
            
            viewHolder.textWrapper.setBackgroundResource(R.drawable.chat_other);
        }