在android系统SystemUI里面添加耳机图标的一点知识

http://blog.csdn.net/liuyidenny/article/details/7175977

原生态的android系统中在状态栏貌似没有耳机这个图标显示，下面我们可以通过这个方法添加一个耳机的图标：

系统状态栏要显示的图标，都会在Framework/base/core/res/res/values的两个xml文件里添加图标要显示的位置信息。

config.xml：

<!-- Component to be used as the status bar service. Must implement the IStatusBar

interface. This name is in the ComponentName flattened format (package/class) -->

<string name="config_statusBarComponent">com.android.systemui/com.android.systemui.statusbar.StatusBarService</string>

<!-- Do not translate. Defines the slots for the right-hand side icons. That is to say, the

icons in the status bar that are not notifications. -->

<string-array name="config_statusBarIcons">

<item><xliff:g id="id">ime</xliff:g></item>

<item><xliff:g id="id">sync_failing</xliff:g></item>

<item><xliff:g id="id">sync_active</xliff:g></item>

<item><xliff:g id="id">gps</xliff:g></item>

<item><xliff:g id="id">bluetooth</xliff:g></item>

<item><xliff:g id="id">nfc</xliff:g></item>

<item><xliff:g id="id">tty</xliff:g></item>

<item><xliff:g id="id">speakerphone</xliff:g></item>

<!--耳机图标ID -->

<item><xliff:g id="id">headset</xliff:g></item>

<!-- 耳机图标ID -->

<item><xliff:g id="id">mute</xliff:g></item>

<item><xliff:g id="id">volume</xliff:g></item>

<item><xliff:g id="id">wifi</xliff:g></item>

<item><xliff:g id="id">cdma_eri</xliff:g></item>

<item><xliff:g id="id">no_sim_card2</xliff:g></item>

<item><xliff:g id="id">phone_signal_second_sub</xliff:g></item>

<item><xliff:g id="id">data_connection</xliff:g></item>

<item><xliff:g id="id">phone_evdo_signal</xliff:g></item>

<item><xliff:g id="id">no_sim_card1</xliff:g></item>

<item><xliff:g id="id">phone_signal</xliff:g></item>

<item><xliff:g id="id">battery</xliff:g></item>

<item><xliff:g id="id">alarm_clock</xliff:g></item>

<item><xliff:g id="id">secure</xliff:g></item>

<item><xliff:g id="id">clock</xliff:g></item>

</string-array>

arrays.xml

<!-- Do not translate. Defines the slots for the right-hand side icons. That is to say, the

icons in the status bar that are not notifications. -->

<string-array name="status_bar_icon_order">

<item><xliff:g id="id">clock</xliff:g></item>

<item><xliff:g id="id">secure</xliff:g></item>

<item><xliff:g id="id">alarm_clock</xliff:g></item>

<item><xliff:g id="id">battery</xliff:g></item>

<item><xliff:g id="id">phone_signal</xliff:g></item>

<item><xliff:g id="id">phone_evdo_signal</xliff:g></item>

<item><xliff:g id="id">data_connection</xliff:g></item>

<item><xliff:g id="id">phone_signal_second_sub</xliff:g></item>

<item><xliff:g id="id">cdma_eri</xliff:g></item>

<item><xliff:g id="id">tty</xliff:g></item>

<item><xliff:g id="id">volume</xliff:g></item>

<item><xliff:g id="id">mute</xliff:g></item>

<item><xliff:g id="id">speakerphone</xliff:g></item>

<!--耳机图标Id -->

<item><xliff:g id="id">headset</xliff:g></item>

<!-- 耳机图标Id -->

<item><xliff:g id="id">wifi</xliff:g></item>

<item><xliff:g id="id">tty</xliff:g></item>

<item><xliff:g id="id">bluetooth</xliff:g></item>

<item><xliff:g id="id">gps</xliff:g></item>

<item><xliff:g id="id">sync_active</xliff:g></item>

<item><xliff:g id="id">sync_failing</xliff:g></item>

<item><xliff:g id="id">ime</xliff:g></item>

</string-array>

接下来在drawable里添加耳机图片，耳机大小不能超过25*25，否则会出现显示被压缩的。

系统所有的图标控制显示都是在SystemUI的StatusBarPolicy.java文件里

在这里我们就可以添加服务和广播，监听耳机插拔的事件如下：

private BroadcastReceiver mIntentReceiver = new BroadcastReceiver() {

@Override

public void onReceive(Context context, Intent intent) {

String action = intent.getAction();

if (action.equals(Intent.ACTION_BATTERY_CHANGED)) {

updateBattery(intent);

}

else if (action.equals(Intent.ACTION_ALARM_CHANGED)) {

updateAlarm(intent);

//耳机广播

}else if(action.equals(Intent.ACTION_HEADSET_PLUG)){

updateHeadset(intent);

//耳机广播

}else if (action.equals(Intent.ACTION_SYNC_STATE_CHANGED)) {

updateSyncState(intent);

}

else if (action.equals(Intent.ACTION_BATTERY_LOW)) {

onBatteryLow(intent);

}

else if (action.equals(Intent.ACTION_BATTERY_OKAY)

|| action.equals(Intent.ACTION_POWER_CONNECTED)) {

onBatteryOkay(intent);

}

else if (action.equals(BluetoothAdapter.ACTION_STATE_CHANGED) ||

action.equals(BluetoothHeadset.ACTION_STATE_CHANGED) ||

action.equals(BluetoothA2dp.ACTION_SINK_STATE_CHANGED) ||

action.equals(BluetoothPbap.PBAP_STATE_CHANGED_ACTION)) {

updateBluetooth(intent);

}

else if (action.equals(WifiManager.NETWORK_STATE_CHANGED_ACTION) ||

action.equals(WifiManager.WIFI_STATE_CHANGED_ACTION) ||

action.equals(WifiManager.RSSI_CHANGED_ACTION)) {

updateWifi(intent);

}

else if (action.equals(LocationManager.GPS_ENABLED_CHANGE_ACTION) ||

action.equals(LocationManager.GPS_FIX_CHANGE_ACTION)) {

updateGps(intent);

}

else if (action.equals(AudioManager.RINGER_MODE_CHANGED_ACTION) ||

action.equals(AudioManager.VIBRATE_SETTING_CHANGED_ACTION)) {

updateVolume();

}

else if (action.equals(TelephonyIntents.ACTION_SIM_STATE_CHANGED)) {

updateSimState(intent);

}

else if (action.equals(TtyIntent.TTY_ENABLED_CHANGE_ACTION)) {

updateTTY(intent);

}

else if (action.equals(ConnectivityManager.CONNECTIVITY_ACTION) ||

action.equals(ConnectivityManager.INET_CONDITION_ACTION)) {

// TODO - stop using other means to get wifi/mobile info

updateConnectivity(intent);

}

else if (action.equals(WimaxManagerConstants.WIMAX_ENABLED_STATUS_CHANGED) ||

action.equals(WimaxManagerConstants.SIGNAL_LEVEL_CHANGED_ACTION) ||

action.equals(WimaxManagerConstants.WIMAX_STATE_CHANGED_ACTION)) {

updateWiMAX(intent);

}

}

};

然后在初始化StatusBarPolicy里加入服务 public StatusBarPolicy(Context context)

//headset

mService.setIcon("headset", R.drawable.stat_sys_headset, 0);

mService.setIconVisibility("headset", false);

自定义一个类：

//耳机图标显示控制

private final void updateHeadset(Intent intent) {

final String action = intent.getAction();

if (action.equals(Intent.ACTION_HEADSET_PLUG)) {

int state = intent.getIntExtra("state", 0);

if (state == 1) {

mService.setIconVisibility("headset", true);

} else {

mService.setIconVisibility("headset", false);

}

}

}

行了，这样我们就可以在状态栏看到刚添加的耳机图标。OK！呵呵。。。当然系统底层也需要这样一个广播发送哦！