在android的状态栏(statusbar)中增加menu，home和back快捷键的方法

在android的状态栏(statusbar)中增加menu，home和back快捷键的方法 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=";;;>;     <;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=";;;     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=";;;     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