在Android 2.3状态栏中增加menu，home和back快捷键的方法

armeasy · 发表于 2011-11-25 14:21:40

在Android2.3状态栏中增加menu，home和back快捷键的方法

1、准备资源，修改XML文

准备几张图，这里我们准备添加home back和menu图标，就需要准备6张图，三张普通状态，三张按下的高亮状态图标：

stat_home.png

stat_home_pressed.png

stat_back.png

stat_back_pressed.png

stat_menu.png

stat_menu_pressed.png

把它们放在frameworks/base/packages/SystemUI/res/drawable/目录下

同时，在frameworks/base/packages/SystemUI/res/drawable下创建三个imageButton的xml文件

xml_stat_home.xml

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

2. <selector

3. xmlns:android="http://schemas.android.com/apk/res/android">

4. <item

5. android:state_focused="true"

6. android:state_pressed="false"

7. android:drawable="@drawable/stat_home" />

8. <item

9. android:state_focused="true"

10. android:state_pressed="true"

11. android:drawable="@drawable/stat_home_pressed" />

12. <item

13. android:state_focused="false"

14. android:state_pressed="true"

15. android:drawable="@drawable/stat_home_pressed" />

16. <item

17. android:drawable="@drawable/stat_home" />

18. </selector>

xml_stat_back.xml

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

2. <selector

3. xmlns:android="http://schemas.android.com/apk/res/android">

4. <item

5. android:state_focused="true"

6. android:state_pressed="false"

7. android:drawable="@drawable/stat_back" />

8. <item

9. android:state_focused="true"

10. android:state_pressed="true"

11. android:drawable="@drawable/stat_back_pressed" />

12. <item

13. android:state_focused="false"

14. android:state_pressed="true"

15. android:drawable="@drawable/stat_back_pressed" />

16. <item

17. android:drawable="@drawable/stat_back" />

18. </selector>

xml_stat_menu.xml

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

2. <selector

3. xmlns:android="http://schemas.android.com/apk/res/android">

4. <item

5. android:state_focused="true"

6. android:state_pressed="false"

7. android:drawable="@drawable/stat_menu" />

8. <item

9. android:state_focused="true"

10. android:state_pressed="true"

11. android:drawable="@drawable/stat_menu_pressed" />

12. <item

13. android:state_focused="false"

14. android:state_pressed="true"

15. android:drawable="@drawable/stat_menu_pressed" />

16. <item

17. android:drawable="@drawable/stat_menu" />

18. </selector>

修改status_bar.xml成如下

目录：frameworks/base/packages/SystemUI/res/layout/status_bar.xml

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

2. <!--

3. /* apps/common/assets/default/default/skins/StatusBar.xml

4. **

6. **

7. ** Licensed under the Apache License, Version 2.0 (the"License");

8. ** you may not use this file except in compliance with the License.

9. ** You may obtain a copy of the License at

10. **

11. ** http://www.apache.org/licenses/LICENSE-2.0

12. **

13. ** Unless required by applicable law oragreed to in writing, software

14. ** distributed under the License isdistributed on an "AS IS" BASIS,

15. ** WITHOUT WARRANTIES OR CONDITIONS OF ANYKIND, either express or implied.

16. ** See the License for the specificlanguage governing permissions and

17. ** limitations under the License.

18. */

19. -->

20.

21. 

22. <com.android.systemui.statusbar.StatusBarView

23. xmlns:android="http://schemas.android.com/apk/res/android"

24. android:background="@drawable/statusbar_background"

25. androidrientation="vertical"

26. android:focusable="true"

27. android:descendantFocusability="afterDescendants"

28. >

29.

30. <LinearLayoutandroid:id="@+id/icons"

31. android:layout_width="match_parent"

32. android:layout_height="match_parent"

33. androidrientation="horizontal">

34. <com.android.systemui.statusbar.IconMergerandroid:id="@+id/notificationIcons"

35. android:layout_width="0dip"

36. android:layout_weight="1"

37. android:layout_height="match_parent"

38. android:layout_alignParentLeft="true"

39. android:paddingLeft="6dip"

40. android:gravity="center_vertical"

41. androidrientation="horizontal"/>

42.

43. <LinearLayoutandroid:id="@+id/statusIcons"

44. android:layout_width="wrap_content"

45. android:layout_height="match_parent"

46. android:layout_alignParentRight="true"

47. android:paddingRight="6dip"

48. android:gravity="center_vertical"

49. androidrientation="horizontal"/>

50. <ImageButtonandroid:id="@+id/go_home"

51. android:layout_width="32px"

52. android:layout_height="32px"

53. android:layout_alignParentLeft="true"

54. android:paddingLeft="10dip"

55. android:paddingTop="10dip"

56. android:gravity="center_vertical"

57. android:clickable="true"

58. android:background="@drawable/xml_stat_home"

59. />

60. <ImageButtonandroid:id="@+id/pop_menu"

61. android:layout_width="32px"

62. android:layout_height="32px"

63. android:layout_alignParentRight="true"

64. android:paddingLeft="10dip"

65. android:paddingTop="10dip"

66. android:gravity="center_vertical"

67. androidrientation="horizontal"

68. android:clickable="true"

69. android:background="@drawable/xml_stat_menu"

70. />

71. <ImageButtonandroid:id="@+id/go_back"

72. android:layout_width="32px"

73. android:layout_height="32px"

74. android:layout_alignParentRight="true"

75. android:paddingLeft="10dip"

76. android:paddingTop="10dip"

77. android:gravity="center_vertical"

78. androidrientation="horizontal"

79. android:clickable="true"

80. android:background="@drawable/xml_stat_back"

81. />

82. <com.android.systemui.statusbar.Clock

83. android:textAppearance="@*android:style/TextAppearance.StatusBar.Icon"

84. android:layout_width="wrap_content"

85. android:layout_height="match_parent"

86. android:singleLine="true"

87. android:paddingRight="6dip"

88. android:gravity="center_vertical|left"

89. />

90. </LinearLayout>

91.

92. <LinearLayoutandroid:id="@+id/ticker"

93. android:layout_width="match_parent"

94. android:layout_height="match_parent"

95. android:paddingLeft="6dip"

96. android:animationCache="false"

97. androidrientation="horizontal">

98. <ImageSwitcherandroid:id="@+id/tickerIcon"

99. android:layout_width="wrap_content"

100. android:layout_height="match_parent"

101. android:layout_marginRight="8dip"

102. >

103. <com.android.systemui.statusbar.AnimatedImageView

104. android:layout_width="25dip"

105. android:layout_height="25dip"

106. />

107. <com.android.systemui.statusbar.AnimatedImageView

108. android:layout_width="25dip"

109. android:layout_height="25dip"

110. />

111. </ImageSwitcher>

112. <com.android.systemui.statusbar.TickerViewandroid:id="@+id/tickerText"

113. android:layout_width="0dip"

114. android:layout_weight="1"

115. android:layout_height="wrap_content"

116. android:paddingTop="2dip"

117. android:paddingRight="10dip">

118. <TextView

119. android:textAppearance="@*android:style/TextAppearance.StatusBar.Ticker"

120. android:layout_width="match_parent"

121. android:layout_height="wrap_content"

122. android:singleLine="true"

123. />

124. <TextView

125. android:textAppearance="@*android:style/TextAppearance.StatusBar.Ticker"

126. android:layout_width="match_parent"

127. android:layout_height="wrap_content"

128. android:singleLine="true"

129. />

130. </com.android.systemui.statusbar.TickerView>

131. </LinearLayout>

132.

133. <com.android.systemui.statusbar.DateViewandroid:id="@+id/date"

134. android:textAppearance="@*android:style/TextAppearance.StatusBar.Icon"

135. android:layout_width="wrap_content"

136. android:layout_height="match_parent"

137. android:singleLine="true"

138. android:gravity="center_vertical|left"

139. android:paddingLeft="6px"

140. android:paddingRight="6px"

141. android:background="@drawable/statusbar_background"

142. />

143. </com.android.systemui.statusbar.StatusBarView>

二为按钮添加动态效果修改frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/StatusBarView.java在类中新增加四个成员（须导入android.widget.ImageButton和android.content.Context）：

1. ImageButton mHomeBtn;

2. ImageButton mBackBtn;

3. ImageButton mMenuBtn;

4. final Context mContext;

增加三个常量：(须导入android.view.KeyEvent;)

public static final int RESV_KEY_HOME= KeyEvent.KEYCODE_HOME;
public static final int RESV_KEY_BACK = KeyEvent.KEYCODE_BACK;
public static final int RESV_KEY_MENU = KeyEvent.KEYCODE_MENU;;

在构造函数StatusBarView中初始化mContext

1. public StatusBarView(Context context, AttributeSet attrs) {

2. super(context, attrs);

3. mContext=context;

4. }

注意”mContext=context;”须在”super(context,attrs);”后面，不然编译会报错

在onFinishInflate中，获取几个button 的handler，并设置touch事件，添加如下代码：

5. mHomeBtn = (ImageButton)findViewById(R.id.go_home);

6. mBackBtn = (ImageButton)findViewById(R.id.go_back);

7. mMenuBtn = (ImageButton)findViewById(R.id.pop_menu);

8.

9. mHomeBtn.setOnTouchListener(homeOnTouch);

10. mBackBtn.setOnTouchListener(backOnTouch);

11. mMenuBtn.setOnTouchListener(menuOnTouch);

各button的touch事件添加如下：

1. void sendIntent(Intent intent)

2. {

3. mContext.sendBroadcast(intent);

4. }

5. private void sendKeyIntent(int keycode){

6. Intent intent = new Intent(Intent.ACTION_ICONKEY_CHANGED);

7. intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);

8. intent.putExtra("keycode", keycode);

9. sendIntent(intent);

10. }

11.

12. private OnTouchListener homeOnTouch = new OnTouchListener(){

13. //@Override

14. public boolean onTouch(View v, MotionEvent event)

15. {

16. // TODO Auto-generated method stub

17. switch (event.getAction()) {

18. case MotionEvent.ACTION_UP:

19. {

20. sendKeyIntent(RESV_KEY_HOME);

21. }

22. break;

23. }

24. return false;

25. }

26. };

27.

28. private OnTouchListener backOnTouch = new OnTouchListener(){

29. //@Override

30. public boolean onTouch(View v, MotionEvent event)

31. {

32. // TODO Auto-generated method stub

33. switch (event.getAction()) {

34. case MotionEvent.ACTION_UP:

35. {

36. sendKeyIntent(RESV_KEY_BACK);

37. }

38. break;

39. }

40. return false;

41. }

42. };

43.

44. private OnTouchListener menuOnTouch = new OnTouchListener(){

45. //@Override

46. public boolean onTouch(View v, MotionEvent event)

47. {

48. // TODO Auto-generated method stub

49. switch (event.getAction()) {

50. case MotionEvent.ACTION_UP:

51. {

52. sendKeyIntent(RESV_KEY_MENU);

53. }

54. break;

55. }

56. return false;

57. }

58. };

为防止点击statusBar上的按钮，触发标题栏的expend事件，修改一下函数onInterceptTouchEvent，点击到不属于button区域时才允许解析Motion的event：

1. public boolean onInterceptTouchEvent(MotionEvent event) {

2. if( (event.getX() > mHomeBtn.getRight())

3. && (event.getX() < mMenuBtn.getLeft())){

4. return mService.interceptTouchEvent(event)

5. ? true : super.onInterceptTouchEvent(event);

6. }

7. return false;

8. //return mService.interceptTouchEvent(event)

9. // ? true : super.onInterceptTouchEvent(event);

10. }

11. }

需要自己添加Intent打开frameworks/base/core/java/android/content/Intent.java，增加下面的内容，由于我们的使用的API不公开，须加上/**@hide*/，不然编译会报错

12. /**

13. * @hide

14. */

15. public staticfinal String ACTION_ICONKEY_CHANGED ="android.intent.action.ICONKEY_CHANGED";

16.

接收并处理intent修改StatusBarPolicy.java

目录:frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/StatusBarPolicy.java

首先在构造函数中加入Intent的filter，注册号这个intent的receiver。filter.addAction(Intent.ACTION_ICONKEY_CHANGED); 接着在private BroadcastReceiver mIntentReceiver =new BroadcastReceiver() 加入Intent的receiver动作;

1. else if (action.equals(Intent.ACTION_ICONKEY_CHANGED)) {

2. Log.d(TAG, "Received ACTION_ICONKEY_CHANGED");

3. updateIconKeyAction(intent);

4. }

及处理函数：须导入以下包import android.view.IWindowManager;import android.os.SystemClock;import android.view.KeyEvent;

1. private final void updateIconKeyAction(Intent intent){

2. int keycode = intent.getIntExtra("keycode", -1);

3. IWindowManager wm = IWindowManager.Stub.asInterface(ServiceManager.getService("window"));

4.

5. if(keycode != -1){

6. long now = SystemClock.uptimeMillis();

7.

8. KeyEvent down = new KeyEvent(now, now, KeyEvent.ACTION_DOWN, keycode, 0);

9. KeyEvent up = new KeyEvent(now, now, KeyEvent.ACTION_UP, keycode, 0);

10.

11. try {

12. wm.injectKeyEvent(down, false);

13. }catch (RemoteException e) {

14. Log.i("Input", "DeadOjbectException");

15. }

16.

17. try{

18. wm.injectKeyEvent(up, false);

19. }catch(RemoteException e) {

20. Log.i("Input", "DeadOjbectException");

21. }

22. }

23. }

StatusBar通知栏屏蔽按钮当拉出expand的通知栏时，按钮的响应非常慢，这时最好将按钮给屏蔽掉，我们在 statusBarView.java中增加两个方法：

1. public void hiddenHotIcons(){

2. mHomeBtn.setVisibility(View.INVISIBLE);

3. mBackBtn.setVisibility(View.INVISIBLE);

4. mMenuBtn.setVisibility(View.INVISIBLE);

5. }

6.

7. public void showHotIcons(){

8. mHomeBtn.setVisibility(View.VISIBLE);

9. mBackBtn.setVisibility(View.VISIBLE);

10. mMenuBtn.setVisibility(View.VISIBLE);

11. }

拉出或收回通知栏中，就可以调用这个函数来显示或隐藏这几个按钮。

修改文件： statusBarService.java

目录：frameworks/base/packages/SystemUI/src/com/android/systemui/statusbar/StatusBarService.java

12. void performExpand() {

13. if (SPEW) Slog.d(TAG,"performExpand: mExpanded=" + mExpanded);

14. if ((mDisabled &StatusBarManager.DISABLE_EXPAND) != 0) {

15. return ;

16. }

17. if (mExpanded) {

18. return;

19. }

20. mExpanded = true;

21. makeExpandedVisible();

22. mStatusBarView.hiddenHotIcons();

23. updateExpandedViewPos(EXPANDED_FULL_OPEN);

24. if (false) postStartTracing();

25. }

26. voidperformCollapse() {

27. if (SPEW)Slog.d(TAG, "performCollapse: mExpanded=" + mExpanded

28. +" mExpandedVisible=" + mExpandedVisible

29. +" mTicking=" + mTicking);

30.

31. if(!mExpandedVisible) {

32. return;

33. }

34. mExpandedVisible = false;

35. visibilityChanged(false);

36. mExpandedParams.flags |=WindowManager.LayoutParams.FLAG_NOT_FOCUSABLE;

37. mExpandedParams.flags &=~WindowManager.LayoutParams.FLAG_ALT_FOCUSABLE_IM;

38. mExpandedDialog.getWindow().setAttributes(mExpandedParams);

39. mTrackingView.setVisibility(View.GONE);

40. mExpandedView.setVisibility(View.GONE);

41.

42. mStatusBarView.showHotIcons();

43.

44. if((mDisabled & StatusBarManager.DISABLE_NOTIFICATION_ICONS) == 0) {

45. setNotificationIconVisibility(true,com.android.internal.R.anim.fade_in);

46. }

47. if(mDateView.getVisibility() == View.VISIBLE) {

48. setDateViewVisibility(false,com.android.internal.R.anim.fade_out);

49. }

50.

51. if(!mExpanded) {

52. return;

53. }

54. mExpanded =false;

55. }

编译工程 #source /opt/android_froyo_smdk/build/envsetup.sh#export TARGET_PRODUCT=full_smdkv210 #mmm frameworks/base/ 把编译生成的相关文件放进SD卡对应的目录即可 最后的效果如图 file:///C:/DOCUME~1/LIUQIM~1/LOCALS~1/Temp/msohtmlclip1/01/clip_image002.jpg

在Android 2.3状态栏中增加menu，home和back快捷键的方法

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