Android中visibility属性GONE、VISIBLE、INVISIBLE、

The difference between the visibility attributes VISIBLE, INVISIBLE, and GONE in Android! ! ! !

Visible

XML file: android: visibility = "visible"

Java代码：view.setVisibility(View.VISIBLE);

Invisible

XML file: android: visibility = "invisible"

Java代码：view.setVisibility(View.INVISIBLE);

Hide (GONE)

XML file: android: visibility = "gone"

Java code: view.setVisibility (View.GONE);

VISIBLE: Set control visible
INVISIBLE: Set control invisible
GONE: Set control hidden

//事件实现，日期设置是关闭状态，当你点击按钮的时候显示日期
   <Button 
        android:id="@+id/btn1"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:text="选择日期"
        />
    
    <!-- android:visibility="gone"设置日期隐藏属性 -->
    <DatePicker
         android:id="@+id/dpPicker"
         android:calendarViewShown="false"
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
		//隐藏属性
         android:visibility="gone"
          />

  @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.activity_main);
        btn1 = (Button) findViewById(R.id.btn1);
        //设置点击事件，点击的时候让他显示出来
        btn1.setOnClickListener(this);
    }


	@Override
	public void onClick(View v) {
		//找到控件
		dpPicker = (DatePicker) findViewById(R.id.dpPicker);
		//visible显示属性
		dpPicker.setVisibility(View.VISIBLE);
	}

The main differences between INVISIBLE and GONE are:

When the visibility property of the control is INVISIBLE, the interface reserves the space occupied by the view control;

When the control property is GONE, the interface does not retain the space occupied by the view control.

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