Layout_weight attribute in linearlayout

Layout_weight attribute in linearlayout

Layout linearlayout code

XML Code

1. <? XML version = "1.0" encoding = "UTF-8"?>
2. <Linearlayout xmlns: Android = "http://schemas.android.com/apk/res/android"
3. Android: Orientation = "vertical"
4. Android: layout_width = "fill_parent"
5. Android: layout_height = "fill_parent"
6. >
7. <Button
8. Android: layout_width = "fill_parent"
9. Android: layout_height = "fill_parent"
10. Android: text = "button1"
11. Android: Background = "#008000"
12. Android: layout_weight = "0"
13. />
14. <Button
15. Android: layout_width = "fill_parent"
16. Android: layout_height = "fill_parent"
17. Android: text = "button2"
18. Android: Background = "# FFFF00"
19. Android: layout_weight = "0"
20. />
21. </Linearlayout>

<? XML version = "1.0" encoding = "UTF-8"?> <Linearlayout xmlns: Android = "http://schemas.android.com/apk/res/android" Android: Orientation = "vertical" Android: layout_width = "fill_parent" Android: layout_height = "fill_parent"> <button Android: layout_width = "fill_parent" Android: layout_height = "fill_parent" Android: text = "button1" Android: Background = "#008000" Android: layout_weight = "0"/> <button Android: layout_width = "fill_parent" Android: layout_height = "fill_parent" Android: text = "button2" Android: Background = "# FFFF00" Android: layout_weight = "0"/> </linearlayout>

If the layout_weight attribute is not set, the default value is 0.

Button 1: button1, green

Button 2: button2, yellow

The following is a record of the changes in the weight attribute (layout_weight) of Button 1 and button 2.

The vertical layout Android: Orientation = "vertical" is tested here. Therefore, the Android: layout_height attribute of the component is used. If the horizontal layout is used, the Android: layout_width attribute of the component is used.

(1) Android: layout_height = "fill_parent"

Button1 (Weight = 0) button2 (Weight = 0)	Button1 (Weight = 0) button2 (Weight = 1)
Button1 (Weight = 1) button2 (Weight = 1) Button1 accounts for 1/2, while button2 accounts for 1/2	Button1 (Weight = 1) button2 (Weight = 2) Button1 accounts for 2/3, while button2 accounts for 1/3
Button1 (Weight = 1) button2 (Weight = 9) Button1 accounts for 9/10, while button2 accounts for 1/10	Button1 (Weight = 1) button2 (Weight = 30) Button1 accounts for 30/31, while button2 accounts for 1/31

(2) Android: layout_height = "wrap_content"

Button1 (Weight = 0) button2 (Weight = 0)	Button1 (Weight = 0) button2 (Weight = 1)
Button1 (Weight = 1) button2 (Weight = 1) Button1 accounts for 1/2, while button2 accounts for 1/2	Button1 (Weight = 1) button2 (Weight = 2) Button1 accounts for 1/3, while button2 accounts for 2/3
Button1 (Weight = 1) button2 (Weight = 9)	Button1 (Weight = 1) button2 (Weight = 30)

The above experiments show that:

(1) Android: layout_height = "fill_parent"

(2) Android: layout_height = "wrap_content"

In the case of (1) and (2), the opposite is displayed under the same weight attribute.