android 的view类的setVisibility();值的意思

android view setVisibility():

有三个参数：Parameters:visibility One of VISIBLE, INVISIBLE, or GONE，想对应的三个常量值：0、4、8

VISIBLE:0  意思是可见的

INVISIBILITY:4 意思是不可见的，但还占着原来的空间

GONE:8  意思是不可见的，不占用原来的布局空间

View Code

1 LinearLayout num_Layout =(LinearLayout) findViewById(R.id.num_layout);
2        if(numberOfRecord > 0){
3             TextView num = (TextView)findViewById(R.id.num);
4            num.setText(numberOfRecord.toString());
5             num_Layout.setVisibility(0);
6        }
7        else{
8             num_Layout.setVisibility(8);
9        }