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Android FrameWork Service 之 StatusBarService(1)_getsystemservice("statusbar")

作者：天景科技苑 | 2024-07-12 22:43:16

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getsystemservice("statusbar")

mClockIcon = service.addIcon(mClockData, null);

updateClock();

// battery

mBatteryData = IconData.makeIcon(“battery”,

null, com.android.internal.R.drawable.stat_sys_battery_unknown, 0, 0);

mBatteryIcon = service.addIcon(mBatteryData, null);

// phone_signal

mPhone = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);

mPhoneData = IconData.makeIcon(“phone_signal”,

null, com.android.internal.R.drawable.stat_sys_signal_null, 0, 0);

mPhoneIcon = service.addIcon(mPhoneData, null);

// register for phone state notifications.

((TelephonyManager)mContext.getSystemService(Context.TELEPHONY_SERVICE))

.listen(mPhoneStateListener,

PhoneStateListener.LISTEN_SERVICE_STATE

| PhoneStateListener.LISTEN_SIGNAL_STRENGTH

| PhoneStateListener.LISTEN_CALL_STATE

| PhoneStateListener.LISTEN_DATA_CONNECTION_STATE

| PhoneStateListener.LISTEN_DATA_ACTIVITY);

// data_connection

mDataData = IconData.makeIcon(“data_connection”,

null, com.android.internal.R.drawable.stat_sys_data_connected_g, 0, 0);

mDataIcon = service.addIcon(mDataData, null);

service.setIconVisibility(mDataIcon, false);

// wifi

mWifiData = IconData.makeIcon(“wifi”, null, sWifiSignalImages[0], 0, 0);

mWifiIcon = service.addIcon(mWifiData, null);

service.setIconVisibility(mWifiIcon, false);

// wifi will get updated by the sticky intents

// bluetooth status

mBluetoothData = IconData.makeIcon(“bluetooth”,

null, com.android.internal.R.drawable.stat_sys_data_bluetooth, 0, 0);

mBluetoothIcon = service.addIcon(mBluetoothData, null);

updateBluetooth(null);

// Gps status

mGpsEnabledIconData = IconData.makeIcon(“gps”,

null, com.android.internal.R.drawable.stat_sys_gps_acquiring_anim, 0, 0);

mGpsFixIconData = IconData.makeIcon(“gps”,

null, com.android.internal.R.drawable.stat_sys_gps_on, 0, 0);

mGpsIcon = service.addIcon(mGpsEnabledIconData, null);

service.setIconVisibility(mGpsIcon, false);

// Alarm clock

mAlarmClockIconData = IconData.makeIcon(

“alarm_clock”,

null, com.android.internal.R.drawable.stat_notify_alarm, 0, 0);

mAlarmClockIcon = service.addIcon(mAlarmClockIconData, null);

service.setIconVisibility(mAlarmClockIcon, false);

// Sync state

mSyncActiveIcon = service.addIcon(IconData.makeIcon(“sync_active”,

null, R.drawable.stat_notify_sync_anim0, 0, 0), null);

mSyncFailingIcon = service.addIcon(IconData.makeIcon(“sync_failing”,

null, R.drawable.stat_notify_sync_error, 0, 0), null);

service.setIconVisibility(mSyncActiveIcon, false);

service.setIconVisibility(mSyncFailingIcon, false);

// volume

mVolumeData = IconData.makeIcon(“volume”,

null, com.android.internal.R.drawable.stat_sys_ringer_silent, 0, 0);

mVolumeIcon = service.addIcon(mVolumeData, null);

service.setIconVisibility(mVolumeIcon, false);

IntentFilter filter = new IntentFilter();

// Register for Intent broadcasts for…

filter.addAction(Intent.ACTION_TIME_TICK);

filter.addAction(Intent.ACTION_TIME_CHANGED);

filter.addAction(Intent.ACTION_CONFIGURATION_CHANGED);

filter.addAction(Intent.ACTION_BATTERY_CHANGED);

filter.addAction(Intent.ACTION_TIMEZONE_CHANGED);

filter.addAction(Intent.ACTION_ALARM_CHANGED);

filter.addAction(Intent.ACTION_SYNC_STATE_CHANGED);

filter.addAction(AudioManager.RINGER_MODE_CHANGED_ACTION);

filter.addAction(AudioManager.VIBRATE_SETTING_CHANGED_ACTION);

filter.addAction(BluetoothIntent.ENABLED_ACTION);

filter.addAction(BluetoothIntent.DISABLED_ACTION);

filter.addAction(BluetoothIntent.HEADSET_STATE_CHANGED_ACTION);

filter.addAction(BluetoothA2dp.SINK_STATE_CHANGED_ACTION);

filter.addAction(WifiManager.WIFI_STATE_CHANGED_ACTION);

filter.addAction(WifiManager.SUPPLICANT_CONNECTION_CHANGE_ACTION);

filter.addAction(WifiManager.NETWORK_STATE_CHANGED_ACTION);

filter.addAction(WifiManager.RSSI_CHANGED_ACTION);

filter.addAction(GpsLocationProvider.GPS_ENABLED_CHANGE_ACTION);

filter.addAction(GpsLocationProvider.GPS_FIX_CHANGE_ACTION);

filter.addAction(TelephonyIntents.ACTION_SIM_STATE_CHANGED);

mContext.registerReceiver(mIntentReceiver, filter, null, mHandler);

}

二． StatusBarService

正如上面看到的，StatusBarPolicy只是一个策略管理，实际的功能是StatusBarService来实现的。StatusBarService初始化时初始化了一个用于显示statusbar 的StatusBarView。StatusBarView里面定义了icon名字，的显示顺序，对应的png图等。代码如下：

public StatusBarService(Context context) {

mContext = context;

mDisplay = ((WindowManager)context.getSystemService(

Context.WINDOW_SERVICE)).getDefaultDisplay();

makeStatusBarView(context);

mUninstallReceiver = new UninstallReceiver();

}

private void makeStatusBarView(Context context) {

Resources res = context.getResources();

mRightIconSlots = res.getStringArray(com.android.internal.R.array.status_bar_icon_order);

mRightIcons = new StatusBarIcon[mRightIconSlots.length];

ExpandedView expanded = (ExpandedView)View.inflate(context,

com.android.internal.R.layout.status_bar_expanded, null);

expanded.mService = this;

StatusBarView sb = (StatusBarView)View.inflate(context,

com.android.internal.R.layout.status_bar, null);

sb.mService = this;

……

}

mRightIconSlots 是一个String型数组，里面记录了状态栏上各个图标的名字。StatusBarPolicy就是根据这个名字找到相应的icon，调用setIcon设置其图标。mRightIconSlots的值从\frameworks\base\core\res\res\values\arrays.xml 中获得，现摘取片段如下：

clock

alarm_clock

battery

phone_signal

data_connection

volume

mute

speakerphone

wifi

bluetooth

gps

sync_active