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对在Android的状态栏添加Menu，Back，Home的改进

2010-11-04 11:02 489 查看

在状态栏上添加Menu,Back,Home三个按钮的方法，在下文有良好的阐述。详见：

《在android的状态栏(statusbar)中增加menu，home和back快捷键的方法》http://blog.csdn.net/freshui/archive/2010/07/15/5738115.aspx

在使用过程中，存在两个问题：

HOME键在我的机器上无效

连击按钮时，由于有时Intent未响应，导致弹起操作未响应直接诶被WindowsManager抛掉。这样就出现了虽然手已离开屏幕，但按钮出现高亮的状态。

1、对于第一个问题，我的方法是把home键单独进行处理，向launcher发送一个启动activity的Intent，这样可以直接回到桌面上。在原方法的基础上,对Home单独进行处理。

1
if

(RESV_KEY_HOME

=
=

mResvKeyCode)

2
{

3

Log
.
d(TAG,

"

HOME

button

Intent!

"

);

4

Intent

intent
=

new

Intent(Intent
.
ACTION_MAIN);

5

intent
.
setFlags(Intent
.
FLAG_ACTIVITY_NEW_TASK);

6

intent
.
addCategory(Intent
.
CATEGORY_HOME);

7

mService
.
sendIntent2(intent);

8

}

9
else

10
{

11

Log
.
d(TAG,

"

other

two

buttons

Intent!

"

);

12

Intent

intent

=

new

Intent(Intent
.
ACTION_ICONKEY_CHANGED);

13

intent
.
addFlags(Intent
.
FLAG_RECEIVER_REGISTERED_ONLY);

14

intent
.
putExtra(
"

keycode

"

,

mResvKeyCode);

15

mService
.
sendIntent(intent);

16
}

在StatusBarService.java中添加sendIntent2方法

1
void

sendIntent2(Intent

intent)

2
{

3

mContext
.
startActivity(intent);

4
}

2、第二个问题的修正思想是使用Animation逐帧动画来使得按钮从完成正常态按下后-变化至高亮态-恢复正常态这一周期。

a. 先在res/layout（与status_bar.xml同目录）中添加三个animation动画xml配置文件。

分别是

animation_home.xml：

1
<
?xml
version
=
"
1.0
"
encoding
=
"
utf-8
"
?
>

2
<
animation-list
xmlns:android
=
" http://schemas.android.com/apk/res/android "

3

android:oneshot
=
"
true
"
>

4

<
item

5

android:duration
=
"
80
"

6

android:drawable
=
"
@drawable/stat_home
"

>

7

<
/item
>

8

<
item

9

android:duration
=
"
80
"

10

android:drawable
=
"
@drawable/stat_home_pressed
"

>

11

<
/item
>

12

<
item

13

android:duration
=
"
80
"

14

android:drawable
=
"
@drawable/stat_home
"

>

15

<
/item
>

16
<
/animation-list
>

animation_back.xml：

1
<
?xml
version
=
"
1.0
"
encoding
=
"
utf-8
"
?
>

2
<
animation-list
xmlns:android
=
" http://schemas.android.com/apk/res/android "

3

android:oneshot
=
"
true
"
>

4

<
item

5

android:duration
=
"
80
"

6

android:drawable
=
"
@drawable/stat_back
"

>

7

<
/item
>

8

<
item

9

android:duration
=
"
80
"

10

android:drawable
=
"
@drawable/stat_back_pressed
"

>

11

<
/item
>

12

<
item

13

android:duration
=
"
80
"

14

android:drawable
=
"
@drawable/stat_back
"

>

15

<
/item
>

16
<
/animation-list
>

17

18

19

animation_menu.xml：

1
<
?xml
version
=
"
1.0
"
encoding
=
"
utf-8
"
?
>

2
<
animation-list
xmlns:android
=
" http://schemas.android.com/apk/res/android "

3

android:oneshot
=
"
true
"
>

4

<
item

5

android:duration
=
"
80
"

6

android:drawable
=
"
@drawable/stat_menu
"

>

7

<
/item
>

8

<
item

9

android:duration
=
"
80
"

10

android:drawable
=
"
@drawable/stat_menu_pressed
"

>

11

<
/item
>

12

<
item

13

android:duration
=
"
80
"

14

android:drawable
=
"
@drawable/stat_menu
"

>

15

<
/item
>

16
<
/animation-list
>

17

18

这三个xml文件分别对应着 home back menu的动画过程

b . 在res/layout/status_bar.xml中修改Imageview的background指向上述三个xml配置文件：

1
<
?xml
version
=
"
1.0
"
encoding
=
"
utf-8
"
?
>

2


3
<
com.android.server.status.StatusBarView
xmlns:android
=
" http://schemas.android.com/apk/res/android "

4

android:background
=
"
@drawable/statusbar_background
"

5

android:orientation
=
"
vertical
"

6

android:focusable
=
"
true
"

7

android:descendantFocusability
=
"
afterDescendants
"

8

>

9

10

<
LinearLayout
android:id
=
"
@+id/icons
"

11

android:layout
_width=
"
fill_parent
"

12

android:layout
_height=
"
fill_parent
"

13

android:orientation
=
"
horizontal
"
>

14



15

<
ImageView

16

android:id
=
"
@+id/status_home
"

17

android:layout
_width=
"
wrap_content
"

18

android:layout
_height=
"
wrap_content
"

19

android:layout
_gravity=
"
top
"

20

android:background
=
"
@layout/animation_home
"

21

/
>

22



23

24

<
com.android.server.status.IconMerger
android:id
=
"
@+id/notificationIcons
"

25

android:layout
_width=
"
0dip
"

26

android:layout
_weight=
"
1
"

27

android:layout
_height=
"
fill_parent
"

28

android:layout
_alignParentLeft=
"
true
"

29

android:paddingLeft
=
"
6dip
"

30

android:gravity
=
"
center_vertical
"

31

android:orientation
=
"
horizontal
"
/
>

32

33

<
LinearLayout
android:id
=
"
@+id/statusIcons
"

34

android:layout
_width=
"
wrap_content
"

35

android:layout
_height=
"
fill_parent
"

36

android:layout
_alignParentRight=
"
true
"

37

android:paddingRight
=
"
6dip
"

38

android:gravity
=
"
center_vertical
"

39

android:orientation
=
"
horizontal
"
/
>

40



41

<
ImageView

42

android:id
=
"
@+id/status_menu
"

43

android:layout
_width=
"
wrap_content
"

44

android:layout
_height=
"
wrap_content
"

45

android:layout
_gravity=
"
top
"

46

android:background
=
"
@layout/animation_menu
"

47

/
>

48

49

<
ImageView

50

android:id
=
"
@+id/status_back
"

51

android:layout
_width=
"
wrap_content
"

52

android:layout
_height=
"
wrap_content
"

53

android:layout
_gravity=
"
top
"

54

android:background
=
"
@layout/animation_back
"

55

/
>

56



57

<
/LinearLayout
>

58

<
LinearLayout
android:id
=
"
@+id/ticker
"

59

android:layout
_width=
"
fill_parent
"

60

android:layout
_height=
"
fill_parent
"

61

android:paddingLeft
=
"
6dip
"

62

android:animationCache
=
"
false
"

63

android:orientation
=
"
horizontal
"

>

64

<
ImageSwitcher
android:id
=
"
@+id/tickerIcon
"

65

android:layout
_width=
"
wrap_content
"

66

android:layout
_height=
"
fill_parent
"

67

android:layout
_marginRight=
"
8dip
"

68

>

69

<
com.android.server.status.AnimatedImageView

70

android:layout
_width=
"
25dip
"

71

android:layout
_height=
"
25dip
"

72

/
>

73

<
com.android.server.status.AnimatedImageView

74

android:layout
_width=
"
25dip
"

75

android:layout
_height=
"
25dip
"

76

/
>

77

<
/ImageSwitcher
>

78

<
com.android.server.status.TickerView
android:id
=
"
@+id/tickerText
"

79

android:layout
_width=
"
0dip
"

80

android:layout
_weight=
"
1
"

81

android:layout
_height=
"
wrap_content
"

82

android:paddingTop
=
"
2dip
"

83

android:paddingRight
=
"
10dip
"
>

84

<
TextView

85

android:layout
_width=
"
fill_parent
"

86

android:layout
_height=
"
wrap_content
"

87

android:singleLine
=
"
true
"

88

android:textColor
=
"
#ff000000
"

/
>

89

<
TextView

90

android:layout
_width=
"
fill_parent
"

91

android:layout
_height=
"
wrap_content
"

92

android:singleLine
=
"
true
"

93

android:textColor
=
"
#ff000000
"

/
>

94

<
/com.android.server.status.TickerView
>

95

<
/LinearLayout
>

96

97

<
com.android.server.status.DateView
android:id
=
"
@+id/date
"

98

android:layout
_width=
"
wrap_content
"

99

android:layout
_height=
"
fill_parent
"

100

android:singleLine
=
"
true
"

101

android:textSize
=
"
16sp
"

102

android:textStyle
=
"
bold
"

103

android:gravity
=
"
center_vertical|left
"

104

android:paddingLeft
=
"
6px
"

105

android:paddingRight
=
"
6px
"

106

android:textColor
=
"
?android:attr/textColorPrimaryInverse
"

107

android:background
=
"
@drawable/statusbar_background
"

108

/
>

109
<
/com.android.server.status.StatusBarView
>

c . 修改StatusBarView.java文件，加入Animation相关代码：

添加三个AnimationDrawable：

1
AnimationDrawable

mHomeAnimation;

2
AnimationDrawable

mBackAnimation;

3
AnimationDrawable

mMenuAnimation;

在onFinishInflate()方法中

1
mHomeAnimation

=

(AnimationDrawable)

mHomeIcon
.
getBackground();

2
mBackAnimation

=

(AnimationDrawable)

mBackIcon
.
getBackground();

3
mMenuAnimation

=

(AnimationDrawable)

mMenuIcon
.
getBackground();

updateResvKeyIcon这个方法，改造成如下这样：

1
private

int

updateResvKeyIcon(
int

key)

2
{

3

if

(key

=
=

RESV_KEY_BACK)

4

{

5

mBackAnimation
.
run();

6

}

7

else

if

(key

=
=

RESV_KEY_HOME)

8

{

9

mHomeAnimation
.
run();

10

}

11

else

if

(key

=
=

RESV_KEY_MENU)

12

{

13

mMenuAnimation
.
run();

14

}

15

return

0

;

16
}

d. 注释掉所有的updateResvKeyIcon方法，仅保留以下一个，并加上判断语句。

1
if(mResvKeyState

=
=

-
1

)

//

remembered

key

state,

no

reserve

2


{

3



switch

(getResvKeyArea(event))
{

4




case

RESV_KEY_HOME
:

5




case

RESV_KEY_BACK
:

6




case

RESV_KEY_MENU
:

7




{

8




mResvKeyState

=

event
.
getAction();

9




mResvKeyCode

=

getResvKeyArea(event);

10

i
f

(mResvKeyState
=
=
MotionEvent
.
ACTION_DOWN)

updateResvKeyIcon(mResvKeyCode);
//
这句改成这样

附件下载如下：
http://download.csdn.net/source/2807668

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标签： android menu layout animation encoding xml

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