在android的状态栏(statusbar)中增加menu，home和..
时间：2010-10-12 来源：fly123456789
由于完全改了status bar，建议先做几张png图片，加到
Frameworks/base/core/res/res/drawable
下。最好做一张背景图，替换 statusbar_background.png
另外我又加了几张icon，分别是home menu和back的正常和按下状态。
这些图片为：
stat_home.png
stat_home_pressed.png
stat_back.png
stat_back_pressed.png
stat_menu.png
stat_menu_pressed.png
修改步骤为：
一． 修改xml界面
1. 增加图标
当然，更改整个status bar避免不要要对源码大刀修一下。我的该法是：
修改status bar的layerout文件：
Frameworks/base/core/res/res/layout/status_bar.xml
在原来的linearlayout中新增三个image view
view plaincopy to clipboardprint?
<LinearLayout android:id="@+id/icons"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal">
<ImageView android:id="@+id/status_home"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:paddingTop="6dip"
android:paddingRight="10dip"
android:paddingLeft="10dip"
android:src="@drawable/stat_home" />
<com.android.server.status.IconMerger android:id="@+id/notificationIcons"
android:layout_width="0dip"
android:layout_weight="1"
android:layout_height="fill_parent"
android:layout_alignParentLeft="true"
android:paddingLeft="6dip"
android:gravity="center_vertical"
android:orientation="horizontal"/>
<LinearLayout android:id="@+id/statusIcons"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_alignParentRight="true"
android:paddingRight="6dip"
android:gravity="center_vertical"
android:orientation="horizontal"/>
<ImageView android:id="@+id/status_menu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:paddingTop="6dip"
android:paddingLeft="10dip"
android:paddingRight="10dip"
android:src="@drawable/stat_menu" />
<ImageView android:id="@+id/status_back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:paddingTop="6dip"
android:paddingRight="10dip"
android:paddingLeft="10dip"
android:src="@drawable/stat_back" />
/LinearLayout>
<LinearLayout android:id="@+id/icons"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal">
<ImageView android:id="@+id/status_home"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:paddingTop="6dip"
android:paddingRight="10dip"
android:paddingLeft="10dip"
android:src="@drawable/stat_home" />
<com.android.server.status.IconMerger android:id="@+id/notificationIcons"
android:layout_width="0dip"
android:layout_weight="1"
android:layout_height="fill_parent"
android:layout_alignParentLeft="true"
android:paddingLeft="6dip"
android:gravity="center_vertical"
android:orientation="horizontal"/>
<LinearLayout android:id="@+id/statusIcons"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_alignParentRight="true"
android:paddingRight="6dip"
android:gravity="center_vertical"
android:orientation="horizontal"/>
<ImageView android:id="@+id/status_menu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:paddingTop="6dip"
android:paddingLeft="10dip"
android:paddingRight="10dip"
android:src="@drawable/stat_menu" />
<ImageView android:id="@+id/status_back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:paddingTop="6dip"
android:paddingRight="10dip"
android:paddingLeft="10dip"
android:src="@drawable/stat_back" />
</LinearLayout>
这样做的好处就是简单。同时保证最右端是home按钮，最左端是back按钮，不受它本来的约束。这样status bar上即可看到这些按钮了。
图标的位置，可通过修改 paddingRight， paddingLeft 和paddingTop的值达到最佳视觉效果。
2. 修改status bar的高度。
既然要在status bar上增加那么几个按钮，当然是想要使用触摸操作的，android自带的status bar高度太小，不适用。对于7寸屏的话，50pixel的高度应该是差不多了。
修改高度很简单，如我转的shinning mm的博文。
修改frameworks/base/core/res/res/values/dimens.xml的status_bar_height属性
<!-- Height of the status bar -->
<dimen name="status_bar_height">50dip</dimen>
当然，如果相改title的高度，可以修改 Frameworks/base/core/res/res/values/themes.xml中的Window attributes的windowTitleSize值，不过我觉得没必要，改了反倒不好看了 ：）
编译运行一下：
view plaincopy to clipboardprint?
~/donut$ source ./env.sh
~/donut$ make –j8
~/donut$ emulator –skin WVGA800
~/donut$ source ./env.sh
~/donut$ make –j8
~/donut$ emulator –skin WVGA800
， 看状态栏是不是改变了？
二 为按钮添加动态效果
添加动态效果，就是触摸按下hilight，松开或者移出后恢复的动作。这一块，我是通过修改 frameworks/base/services/java/com/android/server/status/StatusBarView.java实现的。
1. 获取statusbar中新增加的icon的handler。
在类中新增加三个成员（这需要import android.widget.ImageView;）：
view plaincopy to clipboardprint?
ImageView mHomeIcon;
ImageView mBackIcon;
ImageView mMenuIcon;
ImageView mHomeIcon;
ImageView mBackIcon;
ImageView mMenuIcon;
同时增加三个常量，表示这些icon对应的键值(这需要import android.view.KeyEvent;)
view plaincopy to clipboardprint?
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;;
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onFinishInflate()中，获得实际的对象：
view plaincopy to clipboardprint?
mHomeIcon = (ImageView)findViewById(R.id.status_home);
mBackIcon = (ImageView)findViewById(R.id.status_back);
mMenuIcon = (ImageView)findViewById(R.id.status_menu);
mHomeIcon = (ImageView)findViewById(R.id.status_home);
mBackIcon = (ImageView)findViewById(R.id.status_back);
mMenuIcon = (ImageView)findViewById(R.id.status_menu);
这三个对象就是我们在status_bar.xml中添加的。
2. 添加触摸处理。
首先，应该判断是那个图标被按下，这个我们在StatusBarView.Java的onTouchEvent中来判断。
这里，我做了一个小的按键状态，已方便处理按下、弹起和移出的动作。
首先增加两个状态成员：
view plaincopy to clipboardprint?
int mResvKeyState = -1; //记住的上次按键状态, -1为无状态。
int mResvKeyCode = -1; //记住的上次按键值，-1为无状态。
int mResvKeyState = -1; //记住的上次按键状态, -1为无状态。
int mResvKeyCode = -1; //记住的上次按键值，-1为无状态。
这样我的onTouchEvent就变成这样了：
view plaincopy to clipboardprint?
@Override
public boolean onTouchEvent(MotionEvent event) {
if(mService.mExpanded==true || mService.mTracking==true){
if (event.getAction() != MotionEvent.ACTION_DOWN) {
mService.interceptTouchEvent(event);
}
return true;
}
if(mResvKeyState == -1) // remembered key state, no reserve
{
switch(getResvKeyArea(event)){
case RESV_KEY_HOME:
case RESV_KEY_BACK:
case RESV_KEY_MENU:
{
mResvKeyState = event.getAction();
mResvKeyCode = getResvKeyArea(event);
updateResvKeyIcon(mResvKeyState, mResvKeyCode);
}
break;
default:
if (event.getAction() != MotionEvent.ACTION_DOWN) {
mService.interceptTouchEvent(event);
}
}
}else{
mResvKeyState = event.getAction(); // new state
if(mResvKeyState == MotionEvent.ACTION_MOVE){
if(mResvKeyCode != getResvKeyArea(event)){
/* out of bound, resume the icon */
updateResvKeyIcon(MotionEvent.ACTION_UP, mResvKeyCode);
mResvKeyCode = -1;
mResvKeyState = -1;
}
}else if(mResvKeyState == MotionEvent.ACTION_UP){
updateResvKeyIcon(mResvKeyState, mResvKeyCode);
mResvKeyCode = -1;
mResvKeyState = -1;
}else{
Log.d(TAG, "state machine error! Never be here!");
}
}
return true;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if(mService.mExpanded==true || mService.mTracking==true){
if (event.getAction() != MotionEvent.ACTION_DOWN) {
mService.interceptTouchEvent(event);
}
return true;
}
if(mResvKeyState == -1) // remembered key state, no reserve
{
switch(getResvKeyArea(event)){
case RESV_KEY_HOME:
case RESV_KEY_BACK:
case RESV_KEY_MENU:
{
mResvKeyState = event.getAction();
mResvKeyCode = getResvKeyArea(event);
updateResvKeyIcon(mResvKeyState, mResvKeyCode);
}
break;
default:
if (event.getAction() != MotionEvent.ACTION_DOWN) {
mService.interceptTouchEvent(event);
}
}
}else{
mResvKeyState = event.getAction(); // new state
if(mResvKeyState == MotionEvent.ACTION_MOVE){
if(mResvKeyCode != getResvKeyArea(event)){
/* out of bound, resume the icon */
updateResvKeyIcon(MotionEvent.ACTION_UP, mResvKeyCode);
mResvKeyCode = -1;
mResvKeyState = -1;
}
}else if(mResvKeyState == MotionEvent.ACTION_UP){
updateResvKeyIcon(mResvKeyState, mResvKeyCode);
mResvKeyCode = -1;
mResvKeyState = -1;
}else{
Log.d(TAG, "state machine error! Never be here!");
}
}
return true;
}
里面用到的两个private方法简单实现如下：
view plaincopy to clipboardprint?
private int getResvKeyArea(MotionEvent event)
{
if( (event.getX() <= mHomeIcon.getRight())
&& (event.getY() <= this.getHeight()) ){
return RESV_KEY_HOME;
}
else if( (event.getX() >= mBackIcon.getLeft())
&& (event.getY() <= this.getHeight()) ){
return RESV_KEY_BACK;
}
else if( (event.getX() >= mMenuIcon.getLeft())
&& (event.getY() <= this.getHeight()) ){
return RESV_KEY_MENU;
}else
return -1;
}
private int updateResvKeyIcon(int state, int key)
{
if(key == RESV_KEY_BACK){
if(state == MotionEvent.ACTION_UP){
mBackIcon.setImageResource(com.android.internal.R.drawable.stat_back);
}else if(state == MotionEvent.ACTION_DOWN){
mBackIcon.setImageResource(com.android.internal.R.drawable.stat_back_pressed);
}
}else if(key == RESV_KEY_HOME){
if(state == MotionEvent.ACTION_UP){
mHomeIcon.setImageResource(com.android.internal.R.drawable.stat_home);
}else if(state == MotionEvent.ACTION_DOWN){
mHomeIcon.setImageResource(com.android.internal.R.drawable.stat_home_pressed);
}
}else if(key == RESV_KEY_MENU){
if(state == MotionEvent.ACTION_UP){
mMenuIcon.setImageResource(com.android.internal.R.drawable.stat_menu);
}else if(state == MotionEvent.ACTION_DOWN){
mMenuIcon.setImageResource(com.android.internal.R.drawable.stat_menu_pressed);
}
}
return 0;
}
private int getResvKeyArea(MotionEvent event)
{
if( (event.getX() <= mHomeIcon.getRight())
&& (event.getY() <= this.getHeight()) ){
return RESV_KEY_HOME;
}
else if( (event.getX() >= mBackIcon.getLeft())
&& (event.getY() <= this.getHeight()) ){
return RESV_KEY_BACK;
}
else if( (event.getX() >= mMenuIcon.getLeft())
&& (event.getY() <= this.getHeight()) ){
return RESV_KEY_MENU;
}else
return -1;
}
private int updateResvKeyIcon(int state, int key)
{
if(key == RESV_KEY_BACK){
if(state == MotionEvent.ACTION_UP){
mBackIcon.setImageResource(com.android.internal.R.drawable.stat_back);
}else if(state == MotionEvent.ACTION_DOWN){
mBackIcon.setImageResource(com.android.internal.R.drawable.stat_back_pressed);
}
}else if(key == RESV_KEY_HOME){
if(state == MotionEvent.ACTION_UP){
mHomeIcon.setImageResource(com.android.internal.R.drawable.stat_home);
}else if(state == MotionEvent.ACTION_DOWN){
mHomeIcon.setImageResource(com.android.internal.R.drawable.stat_home_pressed);
}
}else if(key == RESV_KEY_MENU){
if(state == MotionEvent.ACTION_UP){
mMenuIcon.setImageResource(com.android.internal.R.drawable.stat_menu);
}else if(state == MotionEvent.ACTION_DOWN){
mMenuIcon.setImageResource(com.android.internal.R.drawable.stat_menu_pressed);
}
}
return 0;
}
同时，我不想再在按下这些icon的时候，触发下拉动作，我也改了onInterceptTouchEvent函数：
view plaincopy to clipboardprint?
@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
if( (event.getX() > mHomeIcon.getRight())
&& (event.getX() < mMenuIcon.getLeft())){
return mService.interceptTouchEvent(event)
? true : super.onInterceptTouchEvent(event);
}
return false;
}
@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
if( (event.getX() > mHomeIcon.getRight())
&& (event.getX() < mMenuIcon.getLeft())){
return mService.interceptTouchEvent(event)
? true : super.onInterceptTouchEvent(event);
}
return false;
}
再编译一下，看一下结果 :） 是不是能动了？
三，添加相应事件
1. 添加新的intent
首先是新增一条intent， 在framework/base/core/java/android/content/intent.java中增加
view plaincopy to clipboardprint?
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_ICONKEY_CHANGED = "android.intent.action.ICONKEY_CHANGED";
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_ICONKEY_CHANGED = "android.intent.action.ICONKEY_CHANGED";
2. 发送intent
在StatusBarView.java的OnKeyEvent中,松开按键的分支else if(mResvKeyState == MotionEvent.ACTION_UP)操作中加入发送intent的动作：
view plaincopy to clipboardprint?
Intent intent = new Intent(Intent.ACTION_ICONKEY_CHANGED);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
intent.putExtra("keycode", mResvKeyCode);
mService.sendIntent(intent);
Intent intent = new Intent(Intent.ACTION_ICONKEY_CHANGED);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
intent.putExtra("keycode", mResvKeyCode);
mService.sendIntent(intent);
这个intent是只有注册的接收者才能接收。
这里，我们是通过StatusBarService来发送这个intent的。
在StatusBarService.java中新增一个方法:
view plaincopy to clipboardprint?
void sendIntent(Intent intent)
{
mContext.sendBroadcast(intent);
}
void sendIntent(Intent intent)
{
mContext.sendBroadcast(intent);
}
3.接收并处理intent
这个就要修改StatusBarPolicy.java了
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);
然后再private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() 加入Intent的receiver动作;
view plaincopy to clipboardprint?
else if (action.equals(Intent.ACTION_ICONKEY_CHANGED)) {
G, "Received ACTION_ICONKEY_CHANGED");
updateIconKeyAction(intent);
}
else if (action.equals(Intent.ACTION_ICONKEY_CHANGED)) {
Log.d(TAG, "Received ACTION_ICONKEY_CHANGED");
updateIconKeyAction(intent);
}
方法updateIconKeyAction的定义如下：
view plaincopy to clipboardprint?
private final void updateIconKeyAction(Intent intent){
int keycode = intent.getIntExtra("keycode", -1);
if(keycode != -1){
long now = SystemClock.uptimeMillis();
try {
KeyEvent down = new KeyEvent(now, now, KeyEvent.ACTION_DOWN, keycode, 0);
KeyEvent up = new KeyEvent(now, now, KeyEvent.ACTION_UP, keycode, 0);
(IWindowManager.Stub
.asInterface(ServiceManager.getService("window")))
.injectKeyEvent(down, false);
(IWindowManager.Stub
.asInterface(ServiceManager.getService("window")))
.injectKeyEvent(up, false);
} catch (RemoteException e) {
Log.i("Input", "DeadOjbectException");
}
}
}
private final void updateIconKeyAction(Intent intent){
int keycode = intent.getIntExtra("keycode", -1);
if(keycode != -1){
long now = SystemClock.uptimeMillis();
try {
KeyEvent down = new KeyEvent(now, now, KeyEvent.ACTION_DOWN, keycode, 0);
KeyEvent up = new KeyEvent(now, now, KeyEvent.ACTION_UP, keycode, 0);
(IWindowManager.Stub
.asInterface(ServiceManager.getService("window")))
.injectKeyEvent(down, false);
(IWindowManager.Stub
.asInterface(ServiceManager.getService("window")))
.injectKeyEvent(up, false);
} catch (RemoteException e) {
Log.i("Input", "DeadOjbectException");
}
}
}
这样，基本上就完成了。
编译一下， 由于新增了一个intent，因此要先make update-api，
view plaincopy to clipboardprint?
~/donut$ source ./env.sh
~/donut$ make update-api
~/donut$ make –j8
~/donut$ emulator –skin WVGA800
~/donut$ source ./env.sh
~/donut$ make update-api
~/donut$ make –j8
~/donut$ emulator –skin WVGA800
Frameworks/base/core/res/res/drawable
下。最好做一张背景图，替换 statusbar_background.png
另外我又加了几张icon，分别是home menu和back的正常和按下状态。
这些图片为：
stat_home.png
stat_home_pressed.png
stat_back.png
stat_back_pressed.png
stat_menu.png
stat_menu_pressed.png
修改步骤为：
一． 修改xml界面
1. 增加图标
当然，更改整个status bar避免不要要对源码大刀修一下。我的该法是：
修改status bar的layerout文件：
Frameworks/base/core/res/res/layout/status_bar.xml
在原来的linearlayout中新增三个image view
view plaincopy to clipboardprint?
<LinearLayout android:id="@+id/icons"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal">
<ImageView android:id="@+id/status_home"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:paddingTop="6dip"
android:paddingRight="10dip"
android:paddingLeft="10dip"
android:src="@drawable/stat_home" />
<com.android.server.status.IconMerger android:id="@+id/notificationIcons"
android:layout_width="0dip"
android:layout_weight="1"
android:layout_height="fill_parent"
android:layout_alignParentLeft="true"
android:paddingLeft="6dip"
android:gravity="center_vertical"
android:orientation="horizontal"/>
<LinearLayout android:id="@+id/statusIcons"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_alignParentRight="true"
android:paddingRight="6dip"
android:gravity="center_vertical"
android:orientation="horizontal"/>
<ImageView android:id="@+id/status_menu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:paddingTop="6dip"
android:paddingLeft="10dip"
android:paddingRight="10dip"
android:src="@drawable/stat_menu" />
<ImageView android:id="@+id/status_back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:paddingTop="6dip"
android:paddingRight="10dip"
android:paddingLeft="10dip"
android:src="@drawable/stat_back" />
/LinearLayout>
<LinearLayout android:id="@+id/icons"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:orientation="horizontal">
<ImageView android:id="@+id/status_home"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:paddingTop="6dip"
android:paddingRight="10dip"
android:paddingLeft="10dip"
android:src="@drawable/stat_home" />
<com.android.server.status.IconMerger android:id="@+id/notificationIcons"
android:layout_width="0dip"
android:layout_weight="1"
android:layout_height="fill_parent"
android:layout_alignParentLeft="true"
android:paddingLeft="6dip"
android:gravity="center_vertical"
android:orientation="horizontal"/>
<LinearLayout android:id="@+id/statusIcons"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:layout_alignParentRight="true"
android:paddingRight="6dip"
android:gravity="center_vertical"
android:orientation="horizontal"/>
<ImageView android:id="@+id/status_menu"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:paddingTop="6dip"
android:paddingLeft="10dip"
android:paddingRight="10dip"
android:src="@drawable/stat_menu" />
<ImageView android:id="@+id/status_back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="top"
android:paddingTop="6dip"
android:paddingRight="10dip"
android:paddingLeft="10dip"
android:src="@drawable/stat_back" />
</LinearLayout>
这样做的好处就是简单。同时保证最右端是home按钮，最左端是back按钮，不受它本来的约束。这样status bar上即可看到这些按钮了。
图标的位置，可通过修改 paddingRight， paddingLeft 和paddingTop的值达到最佳视觉效果。
2. 修改status bar的高度。
既然要在status bar上增加那么几个按钮，当然是想要使用触摸操作的，android自带的status bar高度太小，不适用。对于7寸屏的话，50pixel的高度应该是差不多了。
修改高度很简单，如我转的shinning mm的博文。
修改frameworks/base/core/res/res/values/dimens.xml的status_bar_height属性
<!-- Height of the status bar -->
<dimen name="status_bar_height">50dip</dimen>
当然，如果相改title的高度，可以修改 Frameworks/base/core/res/res/values/themes.xml中的Window attributes的windowTitleSize值，不过我觉得没必要，改了反倒不好看了 ：）
编译运行一下：
view plaincopy to clipboardprint?
~/donut$ source ./env.sh
~/donut$ make –j8
~/donut$ emulator –skin WVGA800
~/donut$ source ./env.sh
~/donut$ make –j8
~/donut$ emulator –skin WVGA800
， 看状态栏是不是改变了？
二 为按钮添加动态效果
添加动态效果，就是触摸按下hilight，松开或者移出后恢复的动作。这一块，我是通过修改 frameworks/base/services/java/com/android/server/status/StatusBarView.java实现的。
1. 获取statusbar中新增加的icon的handler。
在类中新增加三个成员（这需要import android.widget.ImageView;）：
view plaincopy to clipboardprint?
ImageView mHomeIcon;
ImageView mBackIcon;
ImageView mMenuIcon;
ImageView mHomeIcon;
ImageView mBackIcon;
ImageView mMenuIcon;
同时增加三个常量，表示这些icon对应的键值(这需要import android.view.KeyEvent;)
view plaincopy to clipboardprint?
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;;
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onFinishInflate()中，获得实际的对象：
view plaincopy to clipboardprint?
mHomeIcon = (ImageView)findViewById(R.id.status_home);
mBackIcon = (ImageView)findViewById(R.id.status_back);
mMenuIcon = (ImageView)findViewById(R.id.status_menu);
mHomeIcon = (ImageView)findViewById(R.id.status_home);
mBackIcon = (ImageView)findViewById(R.id.status_back);
mMenuIcon = (ImageView)findViewById(R.id.status_menu);
这三个对象就是我们在status_bar.xml中添加的。
2. 添加触摸处理。
首先，应该判断是那个图标被按下，这个我们在StatusBarView.Java的onTouchEvent中来判断。
这里，我做了一个小的按键状态，已方便处理按下、弹起和移出的动作。
首先增加两个状态成员：
view plaincopy to clipboardprint?
int mResvKeyState = -1; //记住的上次按键状态, -1为无状态。
int mResvKeyCode = -1; //记住的上次按键值，-1为无状态。
int mResvKeyState = -1; //记住的上次按键状态, -1为无状态。
int mResvKeyCode = -1; //记住的上次按键值，-1为无状态。
这样我的onTouchEvent就变成这样了：
view plaincopy to clipboardprint?
@Override
public boolean onTouchEvent(MotionEvent event) {
if(mService.mExpanded==true || mService.mTracking==true){
if (event.getAction() != MotionEvent.ACTION_DOWN) {
mService.interceptTouchEvent(event);
}
return true;
}
if(mResvKeyState == -1) // remembered key state, no reserve
{
switch(getResvKeyArea(event)){
case RESV_KEY_HOME:
case RESV_KEY_BACK:
case RESV_KEY_MENU:
{
mResvKeyState = event.getAction();
mResvKeyCode = getResvKeyArea(event);
updateResvKeyIcon(mResvKeyState, mResvKeyCode);
}
break;
default:
if (event.getAction() != MotionEvent.ACTION_DOWN) {
mService.interceptTouchEvent(event);
}
}
}else{
mResvKeyState = event.getAction(); // new state
if(mResvKeyState == MotionEvent.ACTION_MOVE){
if(mResvKeyCode != getResvKeyArea(event)){
/* out of bound, resume the icon */
updateResvKeyIcon(MotionEvent.ACTION_UP, mResvKeyCode);
mResvKeyCode = -1;
mResvKeyState = -1;
}
}else if(mResvKeyState == MotionEvent.ACTION_UP){
updateResvKeyIcon(mResvKeyState, mResvKeyCode);
mResvKeyCode = -1;
mResvKeyState = -1;
}else{
Log.d(TAG, "state machine error! Never be here!");
}
}
return true;
}
@Override
public boolean onTouchEvent(MotionEvent event) {
if(mService.mExpanded==true || mService.mTracking==true){
if (event.getAction() != MotionEvent.ACTION_DOWN) {
mService.interceptTouchEvent(event);
}
return true;
}
if(mResvKeyState == -1) // remembered key state, no reserve
{
switch(getResvKeyArea(event)){
case RESV_KEY_HOME:
case RESV_KEY_BACK:
case RESV_KEY_MENU:
{
mResvKeyState = event.getAction();
mResvKeyCode = getResvKeyArea(event);
updateResvKeyIcon(mResvKeyState, mResvKeyCode);
}
break;
default:
if (event.getAction() != MotionEvent.ACTION_DOWN) {
mService.interceptTouchEvent(event);
}
}
}else{
mResvKeyState = event.getAction(); // new state
if(mResvKeyState == MotionEvent.ACTION_MOVE){
if(mResvKeyCode != getResvKeyArea(event)){
/* out of bound, resume the icon */
updateResvKeyIcon(MotionEvent.ACTION_UP, mResvKeyCode);
mResvKeyCode = -1;
mResvKeyState = -1;
}
}else if(mResvKeyState == MotionEvent.ACTION_UP){
updateResvKeyIcon(mResvKeyState, mResvKeyCode);
mResvKeyCode = -1;
mResvKeyState = -1;
}else{
Log.d(TAG, "state machine error! Never be here!");
}
}
return true;
}
里面用到的两个private方法简单实现如下：
view plaincopy to clipboardprint?
private int getResvKeyArea(MotionEvent event)
{
if( (event.getX() <= mHomeIcon.getRight())
&& (event.getY() <= this.getHeight()) ){
return RESV_KEY_HOME;
}
else if( (event.getX() >= mBackIcon.getLeft())
&& (event.getY() <= this.getHeight()) ){
return RESV_KEY_BACK;
}
else if( (event.getX() >= mMenuIcon.getLeft())
&& (event.getY() <= this.getHeight()) ){
return RESV_KEY_MENU;
}else
return -1;
}
private int updateResvKeyIcon(int state, int key)
{
if(key == RESV_KEY_BACK){
if(state == MotionEvent.ACTION_UP){
mBackIcon.setImageResource(com.android.internal.R.drawable.stat_back);
}else if(state == MotionEvent.ACTION_DOWN){
mBackIcon.setImageResource(com.android.internal.R.drawable.stat_back_pressed);
}
}else if(key == RESV_KEY_HOME){
if(state == MotionEvent.ACTION_UP){
mHomeIcon.setImageResource(com.android.internal.R.drawable.stat_home);
}else if(state == MotionEvent.ACTION_DOWN){
mHomeIcon.setImageResource(com.android.internal.R.drawable.stat_home_pressed);
}
}else if(key == RESV_KEY_MENU){
if(state == MotionEvent.ACTION_UP){
mMenuIcon.setImageResource(com.android.internal.R.drawable.stat_menu);
}else if(state == MotionEvent.ACTION_DOWN){
mMenuIcon.setImageResource(com.android.internal.R.drawable.stat_menu_pressed);
}
}
return 0;
}
private int getResvKeyArea(MotionEvent event)
{
if( (event.getX() <= mHomeIcon.getRight())
&& (event.getY() <= this.getHeight()) ){
return RESV_KEY_HOME;
}
else if( (event.getX() >= mBackIcon.getLeft())
&& (event.getY() <= this.getHeight()) ){
return RESV_KEY_BACK;
}
else if( (event.getX() >= mMenuIcon.getLeft())
&& (event.getY() <= this.getHeight()) ){
return RESV_KEY_MENU;
}else
return -1;
}
private int updateResvKeyIcon(int state, int key)
{
if(key == RESV_KEY_BACK){
if(state == MotionEvent.ACTION_UP){
mBackIcon.setImageResource(com.android.internal.R.drawable.stat_back);
}else if(state == MotionEvent.ACTION_DOWN){
mBackIcon.setImageResource(com.android.internal.R.drawable.stat_back_pressed);
}
}else if(key == RESV_KEY_HOME){
if(state == MotionEvent.ACTION_UP){
mHomeIcon.setImageResource(com.android.internal.R.drawable.stat_home);
}else if(state == MotionEvent.ACTION_DOWN){
mHomeIcon.setImageResource(com.android.internal.R.drawable.stat_home_pressed);
}
}else if(key == RESV_KEY_MENU){
if(state == MotionEvent.ACTION_UP){
mMenuIcon.setImageResource(com.android.internal.R.drawable.stat_menu);
}else if(state == MotionEvent.ACTION_DOWN){
mMenuIcon.setImageResource(com.android.internal.R.drawable.stat_menu_pressed);
}
}
return 0;
}
同时，我不想再在按下这些icon的时候，触发下拉动作，我也改了onInterceptTouchEvent函数：
view plaincopy to clipboardprint?
@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
if( (event.getX() > mHomeIcon.getRight())
&& (event.getX() < mMenuIcon.getLeft())){
return mService.interceptTouchEvent(event)
? true : super.onInterceptTouchEvent(event);
}
return false;
}
@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
if( (event.getX() > mHomeIcon.getRight())
&& (event.getX() < mMenuIcon.getLeft())){
return mService.interceptTouchEvent(event)
? true : super.onInterceptTouchEvent(event);
}
return false;
}
再编译一下，看一下结果 :） 是不是能动了？
三，添加相应事件
1. 添加新的intent
首先是新增一条intent， 在framework/base/core/java/android/content/intent.java中增加
view plaincopy to clipboardprint?
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_ICONKEY_CHANGED = "android.intent.action.ICONKEY_CHANGED";
@SdkConstant(SdkConstantType.BROADCAST_INTENT_ACTION)
public static final String ACTION_ICONKEY_CHANGED = "android.intent.action.ICONKEY_CHANGED";
2. 发送intent
在StatusBarView.java的OnKeyEvent中,松开按键的分支else if(mResvKeyState == MotionEvent.ACTION_UP)操作中加入发送intent的动作：
view plaincopy to clipboardprint?
Intent intent = new Intent(Intent.ACTION_ICONKEY_CHANGED);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
intent.putExtra("keycode", mResvKeyCode);
mService.sendIntent(intent);
Intent intent = new Intent(Intent.ACTION_ICONKEY_CHANGED);
intent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
intent.putExtra("keycode", mResvKeyCode);
mService.sendIntent(intent);
这个intent是只有注册的接收者才能接收。
这里，我们是通过StatusBarService来发送这个intent的。
在StatusBarService.java中新增一个方法:
view plaincopy to clipboardprint?
void sendIntent(Intent intent)
{
mContext.sendBroadcast(intent);
}
void sendIntent(Intent intent)
{
mContext.sendBroadcast(intent);
}
3.接收并处理intent
这个就要修改StatusBarPolicy.java了
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);
然后再private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() 加入Intent的receiver动作;
view plaincopy to clipboardprint?
else if (action.equals(Intent.ACTION_ICONKEY_CHANGED)) {
G, "Received ACTION_ICONKEY_CHANGED");
updateIconKeyAction(intent);
}
else if (action.equals(Intent.ACTION_ICONKEY_CHANGED)) {
Log.d(TAG, "Received ACTION_ICONKEY_CHANGED");
updateIconKeyAction(intent);
}
方法updateIconKeyAction的定义如下：
view plaincopy to clipboardprint?
private final void updateIconKeyAction(Intent intent){
int keycode = intent.getIntExtra("keycode", -1);
if(keycode != -1){
long now = SystemClock.uptimeMillis();
try {
KeyEvent down = new KeyEvent(now, now, KeyEvent.ACTION_DOWN, keycode, 0);
KeyEvent up = new KeyEvent(now, now, KeyEvent.ACTION_UP, keycode, 0);
(IWindowManager.Stub
.asInterface(ServiceManager.getService("window")))
.injectKeyEvent(down, false);
(IWindowManager.Stub
.asInterface(ServiceManager.getService("window")))
.injectKeyEvent(up, false);
} catch (RemoteException e) {
Log.i("Input", "DeadOjbectException");
}
}
}
private final void updateIconKeyAction(Intent intent){
int keycode = intent.getIntExtra("keycode", -1);
if(keycode != -1){
long now = SystemClock.uptimeMillis();
try {
KeyEvent down = new KeyEvent(now, now, KeyEvent.ACTION_DOWN, keycode, 0);
KeyEvent up = new KeyEvent(now, now, KeyEvent.ACTION_UP, keycode, 0);
(IWindowManager.Stub
.asInterface(ServiceManager.getService("window")))
.injectKeyEvent(down, false);
(IWindowManager.Stub
.asInterface(ServiceManager.getService("window")))
.injectKeyEvent(up, false);
} catch (RemoteException e) {
Log.i("Input", "DeadOjbectException");
}
}
}
这样，基本上就完成了。
编译一下， 由于新增了一个intent，因此要先make update-api，
view plaincopy to clipboardprint?
~/donut$ source ./env.sh
~/donut$ make update-api
~/donut$ make –j8
~/donut$ emulator –skin WVGA800
~/donut$ source ./env.sh
~/donut$ make update-api
~/donut$ make –j8
~/donut$ emulator –skin WVGA800
另外，如果不是做phone，也可以在StatusBarPolicy.java中将所有phone相关的处理都删掉。
##############################################################################
由于完全改了status bar，建议先做几张png图片，加到
Frameworks/base/core/res/res/drawable
下。最好做一张背景图，替换 statusbar_background.png
另外我又加了几张icon，分别是home menu和back的正常和按下状态。
这些图片为：
frameworks\base\core\res\res\drawable\ic_menu_back_pressed.png
frameworks\base\core\res\res\drawable\ic_menu_home_pressed.png
frameworks\base\core\res\res\drawable\ic_menu_more_pressed.png
frameworks\base\core\res\res\drawable\ic_volume_down_pressed.png
frameworks\base\core\res\res\drawable\ic_volume_up_pressed.png
frameworks\base\core\res\res\drawable\ic_menu_back.png
frameworks\base\core\res\res\drawable\ic_menu_home.png
frameworks\base\core\res\res\drawable\ic_menu_more.png
frameworks\base\core\res\res\drawable\ic_volume_down.png
frameworks\base\core\res\res\drawable\ic_volume_up.png
修改步骤为：
一．修改xml界面
1.创建按钮
frameworks\base\core\res\res\drawable\btn_sbicon_back.xml
frameworks\base\core\res\res\drawable\btn_sbicon_home.xml
frameworks\base\core\res\res\drawable\btn_sbicon_menu.xml
frameworks\base\core\res\res\drawable\btn_sbicon_vol_down.xml
frameworks\base\core\res\res\drawable\btn_sbicon_vol_up.xml
基结构如下：
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_pressed="true" android:drawable="@drawable/ic_menu_back_pressed" />
<item android:state_pressed="false" android:drawable="@drawable/ic_menu_back" />
</selector>
2. 增加图标
更改整个status bar，我的方法是：
修改status bar的layerout文件：
Frameworks/base/core/res/res/layout/status_bar.xml
在原来的linearlayout中新增 image view
<?xml version="1.0" encoding="utf-8"?>
<com.android.server.status.StatusBarView xmlns:android="http://schemas.android.com/apk/res/android"
android:background="@drawable/statusbar_background"
android:orientation="vertical"
android:focusable="true"
android:descendantFocusability="afterDescendants"
>
<LinearLayout android:id="@+id/keys"
android:layout_width="wrap_content"
android:layout_height="fill_parent"
android:orientation="horizontal">
<ImageView android:id="@+id/status_home"
android:layout_width="40dip"
android:layout_height="40dip"
android:clickable="true"
android:layout_gravity="top"
android:paddingTop="1dip"
android:paddingRight="1dip"
android:paddingLeft="1dip"
android:src="@drawable/btn_sbicon_home" />
<ImageView android:id="@+id/status_back"
android:layout_width="40dip"
android:layout_height="40dip"
android:clickable="true"
android:layout_gravity="top"
android:paddingTop="1dip"
android:paddingRight="1dip"
android:paddingLeft="1dip"
android:src="@drawable/btn_sbicon_back" />
<ImageView android:id="@+id/status_menu"
android:layout_width="40dip"
android:layout_height="40dip"
android:clickable="true"
android:layout_gravity="top"
android:paddingTop="1dip"
android:paddingRight="1dip"
android:paddingLeft="1dip"
android:src="@drawable/btn_sbicon_menu" />
<ImageView android:id="@+id/status_vol_down"
android:layout_width="40dip"
android:layout_height="40dip"
android:clickable="true"
android:layout_gravity="top"
android:paddingTop="1dip"
android:paddingRight="1dip"
android:paddingLeft="1dip"
android:src="@drawable/btn_sbicon_vol_down" />
<ImageView android:id="@+id/status_vol_up"
android:layout_width="40dip"
android:layout_height="40dip"
android:clickable="true"
android:layout_gravity="top"
android:paddingTop="1dip"
android:paddingRight="1dip"
android:paddingLeft="1dip"
android:src="@drawable/btn_sbicon_vol_up" />
</LinearLayout>
......
</com.android.server.status.StatusBarView>
这样做的好处就是简单。同时保证home、menu、back按钮，不受它本来的约束。这样status bar上即可看到这些按钮了。
图标的位置，可通过修改 paddingRight， paddingLeft 和paddingTop的值达到最佳视觉效果。
3. 修改status bar的高度。
既然要在status bar上增加那么几个按钮，当然是想要使用触摸操作的，android自带的status bar高度太小，不适用。对于7寸屏的话，50pixel的高度应该是差不多了。
修改高度很简单，修改frameworks/base/core/res/res/values/dimens.xml的status_bar_height属性
<!-- Height of the status bar -->
<dimen name="status_bar_height">50dip</dimen>
也可以更改状态栏Icon的大小，frameworks\base\core\res\res\layout\status_bar_icon.xml
<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="25dp"
android:layout_height="25dp" >
当然，如果相改title的高度，可以修改 Frameworks/base/core/res/res/values/themes.xml中的Window attributes的windowTitleSize值
编译运行一下：
~/donut$ source ./env.sh
~/donut$ make –j8
~/donut$ emulator –skin WVGA800
~/donut$ source ./env.sh
~/donut$ make –j8
~/donut$ emulator –skin WVGA800
看状态栏是不是改变了？
二 为按钮添加模拟按键
修改frameworks\base\services\java\com\android\server\status\StatusBarView.java
1.添加各个图片按钮的引用，
android.widget.LinearLayout keysLayout;
android.widget.ImageView btnHome;
android.widget.ImageView btnBack;
android.widget.ImageView btnMenu;
android.widget.ImageView btnVolUp;
android.widget.ImageView btnVolDown;
2.修改onFinishInflate()函数，各个图片ID在上面的status_bar.xml中已经定义
@Override
protected void onFinishInflate() {
......
/* Begin : Added by TigerPan */
keysLayout = (android.widget.LinearLayout)findViewById(R.id.keys);
btnHome = (android.widget.ImageView)findViewById(R.id.status_home);
btnBack = (android.widget.ImageView)findViewById(R.id.status_back);
btnMenu = (android.widget.ImageView)findViewById(R.id.status_menu);
btnVolUp = (android.widget.ImageView)findViewById(R.id.status_vol_up);
btnVolDown = (android.widget.ImageView)findViewById(R.id.status_vol_down);
btnHome.setOnClickListener(mKeysListener);
btnBack.setOnClickListener(mKeysListener);
btnMenu.setOnClickListener(mKeysListener);
btnVolUp.setOnClickListener(mKeysListener);
btnVolDown.setOnClickListener(mKeysListener);
/* End : Added by TigerPan */
}
3.添加各个按钮的事件监听Listener
android.view.View.OnClickListener mKeysListener = new android.view.View.OnClickListener(){
public void onClick(View v) {
switch (v.getId()) {
case R.id.status_home:
mKeysHandler.sendEmptyMessage(KEY_HOME);
break;
case R.id.status_back:
mKeysHandler.sendEmptyMessage(KEY_BACK);
break;
case R.id.status_menu:
mKeysHandler.sendEmptyMessage(KEY_MENU);
break;
case R.id.status_vol_up:
mKeysHandler.sendEmptyMessage(KEY_VOL_UP);
break;
case R.id.status_vol_down:
mKeysHandler.sendEmptyMessage(KEY_VOL_DOWN);
break;
default:
break;
}
}};
4.添加模拟按键处理
/* Begin : ADDED by TigerPan 20100831 */
private static final int KEY_HOME = 1000;
private static final int KEY_BACK = 1001;
private static final int KEY_MENU = 1002;
private static final int KEY_VOL_UP = 1003;
private static final int KEY_VOL_DOWN = 1004;
private Handler mKeysHandler = new Handler(){
public void handleMessage(Message msg) {
switch (msg.what) {
case KEY_HOME:
sendKey(KeyEvent.KEYCODE_HOME);
break;
case KEY_BACK:
sendKey(KeyEvent.KEYCODE_BACK);
break;
case KEY_MENU:
sendKey(KeyEvent.KEYCODE_MENU);
break;
case KEY_VOL_UP:
((android.media.AudioManager)mContext.getSystemService(Context.AUDIO_SERVICE))
.adjustVolume(android.media.AudioManager.ADJUST_RAISE, android.media.AudioManager.STREAM_MUSIC);
break;
case KEY_VOL_DOWN:
((android.media.AudioManager)mContext.getSystemService(Context.AUDIO_SERVICE))
.adjustVolume(android.media.AudioManager.ADJUST_LOWER, android.media.AudioManager.STREAM_MUSIC);
break;
default:
break;
}
}
private void sendKey(int keyCode) {
long now = SystemClock.uptimeMillis();
long n = System.currentTimeMillis();
Log.d("Tiger", "Intent.ACTION_SOFT_"+keyCode+"_PRESSED 0="+n);
try {
KeyEvent down = new KeyEvent(now, now, KeyEvent.ACTION_DOWN, keyCode, 0);
KeyEvent up = new KeyEvent(now, now, KeyEvent.ACTION_UP, keyCode, 0);
Log.d("Tiger", "Intent.ACTION_SOFT_"+keyCode+"_PRESSED 1="+(System.currentTimeMillis()/*-n*/));
IWindowManager wm = IWindowManager.Stub.asInterface(ServiceManager.getService("window"));
Log.d("Tiger", "Intent.ACTION_SOFT_"+keyCode+"_PRESSED 2="+(System.currentTimeMillis()/*-n*/));
wm.injectKeyEvent(down, false);
Log.d("Tiger", "Intent.ACTION_SOFT_"+keyCode+"_PRESSED 3="+(System.currentTimeMillis()/*-n*/));
wm.injectKeyEvent(up, false);
Log.d("Tiger", "Intent.ACTION_SOFT_"+keyCode+"_PRESSED 4="+(System.currentTimeMillis()/*-n*/));
} catch (RemoteException e) {
Log.i("Input", "DeadOjbectException");
}
}
};
/* End : ADDED by TigerPan 20100831 */
5.避免在按下这几个按钮时，触发下拉Notification视图，影响性能
修改onInterceptTouchEvent(MotionEvent event)函数
@Override
public boolean onInterceptTouchEvent(MotionEvent event) {
/* Begin : Modified by TigerPan */
if (keysLayout.getRight() < event.getX())
return mService.interceptTouchEvent(event) ? true : super.onInterceptTouchEvent(event);
/*int parentLeft = mStatusIcons.getLeft();
android.util.Log.i("Tiger","....."+(event.getX() < (parentLeft + iconVolDown.getLeft()) || event.getX() > (parentLeft + iconHome.getRight())));
if(event.getX() < (parentLeft + iconVolDown.getLeft()) || event.getX() > (parentLeft + iconHome.getRight()))
return mService.interceptTouchEvent(event) ? true : super.onInterceptTouchEvent(event);
*/
return false;
/* End : Modified by TigerPan */
}
这样，基本上就完成了。
编译一下
~/donut$ source ./env.sh
~/donut$ make update-api
~/donut$ make –j8
~/donut$ emulator –skin WVGA800
~/donut$ source ./env.sh
~/donut$ make update-api
~/donut$ make –j8
~/donut$ emulator –skin WVGA800
相关阅读 更多 +
