Android状态栏上添加按钮

修改xml文件就可以添加按钮，文件位置\frameworks\base\core\res\res\layout\status_bar.xml
 
绿色部分添加了3个按钮

<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/icons"
 
        android:layout_width="fill_parent"
 
        android:layout_height="fill_parent"
 
        android:orientation="horizontal">
 
        <LinearLayout android:id="@+id/statusButtons"
 
            android:layout_width="wrap_content"
 
            android:layout_height="fill_parent"
 
            android:layout_alignParentRight="true"
 
            android:orientation="horizontal"> 
 
            <ImageButton
 
                android:id="@+id/Stat_Home_button"
 
                android:layout_width="wrap_content"
 
                android:layout_height="fill_parent"
 
                android:background="@drawable/stat_home_button"
 
             />
 
            <ImageButton
 
                android:id="@+id/Stat_vol_down_button"
 
                android:layout_width="wrap_content"
 
                android:layout_height="fill_parent"
 
                android:background="@drawable/stat_volume_down_button_up"
 
             />
 
            <ImageButton
 
                android:id="@+id/Stat_vol_raise_button"
 
                android:layout_width="wrap_content"
 
                android:layout_height="fill_parent"
 
                android:background="@drawable/stat_volume_raise_button_up"
 
             />
 
        </LinearLayout>
 
        <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"/>   
 
    </LinearLayout>

    <LinearLayout android:id="@+id/ticker"
 
        android:layout_width="fill_parent"
 
        android:layout_height="fill_parent"
 
        android:paddingLeft="6dip"
 
        android:animationCache="false"
 
        android:orientation="horizontal" >
 
        <ImageSwitcher android:id="@+id/tickerIcon"
 
            android:layout_width="wrap_content"
 
            android:layout_height="fill_parent"
 
            android:layout_marginRight="8dip"
 
            >
 
            <com.android.server.status.AnimatedImageView
 
                android:layout_width="25dip"
 
                android:layout_height="25dip"
 
                />
 
            <com.android.server.status.AnimatedImageView
 
                android:layout_width="25dip"
 
                android:layout_height="25dip"
 
                />
 
        </ImageSwitcher>
 
        <com.android.server.status.TickerView android:id="@+id/tickerText"
 
            android:layout_width="0dip"
 
            android:layout_weight="1"
 
            android:layout_height="wrap_content"
 
            android:paddingTop="2dip"
 
            android:paddingRight="10dip">
 
            <TextView
 
                android:layout_width="fill_parent"
 
                android:layout_height="wrap_content"
 
                android:singleLine="true"
 
                android:textColor="#ff000000" />
 
            <TextView
 
                android:layout_width="fill_parent"
 
                android:layout_height="wrap_content"
 
                android:singleLine="true"
 
                android:textColor="#ff000000" />
 
        </com.android.server.status.TickerView>
 
    </LinearLayout>

    <com.android.server.status.DateView android:id="@+id/date"
 
        android:layout_width="wrap_content"
 
        android:layout_height="25dp"
 
        android:singleLine="true"
 
        android:textSize="16sp"
 
        android:textStyle="bold"
 
        android:gravity="center_vertical|left"
 
        android:paddingLeft="6px"
 
        android:paddingRight="6px"
 
        android:textColor="#ff000000"
 
        android:background="@drawable/statusbar_background"
 
        />
 
</com.android.server.status.StatusBarView>
 
效果如下：