自定义VIEWGROUP的一个用法

 图片看http://www.curious-creature.org/2009/03/01/android-layout-tricks-3-optimize-part-1/

<

merge




    

xmlns:android

=

"http://schemas.android.com/apk/res/android"




    

xmlns:okCancelBar

=

"http://schemas.android.com/apk/res/com.example.android.merge"

>







    

<

ImageView




        

android:layout_width

=

"fill_parent"




        

android:layout_height

=

"fill_parent"

 





        

android:scaleType

=

"center"




        

android:src

=

"@drawable/golden_gate"

 

/>







    

<

com

.

example

.

android

.

merge

.

OkCancelBar




        

android:layout_width

=

"fill_parent"




        

android:layout_height

=

"wrap_content"




        

android:layout_gravity

=

"bottom"







        

android:paddingTop

=

"8dip"




        

android:gravity

=

"center_horizontal"







        

android:background

=

"#AA000000"







        

okCancelBar:okLabel

=

"Save"




        

okCancelBar:cancelLabel

=

"Don't save"

 

/>









</

merge

>




com

.

example

.

android

.

merge

.

OkCancelBar






是一个自定义的GROUP







public

 

class

 

OkCancelBar

 

extends

 

LinearLayout

 

{


     

public

 

OkCancelBar

(

Context

 context

,

 

AttributeSet

 attrs

)

 

{


         

super

(

context

,

 attrs

);


         setOrientation

(

HORIZONTAL

);


         setGravity

(

Gravity

.

CENTER

);


         setWeightSum

(

1.0f

);


 
         

LayoutInflater

.

from

(

context

).

inflate

(

R

.

layout

.

okcancelbar

,

 

this

,

 

true

);


 
         

TypedArray

 array 

=

 context

.

obtainStyledAttributes

(

attrs

,

 R

.

styleable

.

OkCancelBar

,

 

0

,

 

0

);


 
         

String

 text 

=

 array

.

getString

(

R

.

styleable

.

OkCancelBar_okLabel

);


         

if

 

(

text 

==

 

null

)

 text 

=

 

"Ok"

;


         

((

Button

)

 findViewById

(

R

.

id

.

okcancelbar_ok

)).

setText

(

text

);


 
         text 

=

 array

.

getString

(

R

.

styleable

.

OkCancelBar_cancelLabel

);


         

if

 

(

text 

==

 

null

)

 text 

=

 

"Cancel"

;


         

((

Button

)

 findViewById

(

R

.

id

.

okcancelbar_cancel

)).

setText

(

text

);


 
         array

.

recycle

();


     

}


 

}









LayoutInflater

.

from

(

context

).

inflate

(

R

.

layout

.

okcancelbar

,

 

this

,

 

true

);






直接从XML中得到一个VIEW加入到当前GROUP中




okcancelbar

.xml:





<

merge

 

xmlns:android

=

"http://schemas.android.com/apk/res/android"

>




    

<

include




        

layout

=

"@layout/okcancelbar_button"




        

android:id

=

"@+id/okcancelbar_ok"

 

/>







    

<

include




        

layout

=

"@layout/okcancelbar_button"




        

android:id

=

"@+id/okcancelbar_cancel"

 

/>






</

merge

>