TextView emptyView = new TextView(this);emptyView.setLayoutParams(new LayoutParams(LayoutParams.FILL_PARENT,		LayoutParams.FILL_PARENT));emptyView.setText("你还没有历史记录");emptyView.setPadding(8, 8, 8, 8);emptyView.setTextSize(30);emptyView.setGravity(Gravity.CENTER);		emptyView.setVisibility(View.GONE);		LayoutParams params = new LayoutParams(LayoutParams.FILL_PARENT,LayoutParams.FILL_PARENT);    addContentView(emptyView, params);    lvrecords.setEmptyView(emptyView);