本文实例讲述了android实现添加耳机状态图标的方法。分享给大家供大家参考。具体如下：
原生态的android系统是没有耳机插入或未插入的状态指示的，本文就是讲解如何添加耳机插入的状态指示。效果图如下
如图，当插入耳机后，在status bar上出现了一个耳机的图标。
这个耳机的图标和sim卡信号等图标在status bar的右边，因此这个实现肯定不是通过notification实现的，那么添加这个功能只能在framwork里面寻找了。具体的修改步骤如下：
1.在frameworks/base/core/res/res/drawable-mdpi目录先添加一个stat_sys_headset.png资源文件。这里面资源文件的目录要根据设备的分辨率来确定，我的设备是hvga的，因此资源文件放在drawable-mdpi目录下。
2.修改frameworks/base/services/java/com/android/server/status/statusbarpolicy.java
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public class statusbarpolicy {
private static final string tag = "statusbarpolicy";
private static statusbarpolicy sinstance;
.....
// alarm clock
// icon lit when clock is set
private ibinder malarmclockicon;
private icondata malarmclockicondata;
//modify here start
//headset
private ibinder mheadsetplugicon;
private icondata mheadsetplugicondata;
//modify here end
.....
private broadcastreceiver mintentreceiver = new broadcastreceiver() {
@override
public void onreceive(context context, intent intent) {
string action = intent.getaction();
if (action.equals(intent.action_time_tick)) {
updateclock();
}
.....
else if (action.equals(intent.action_alarm_changed)) {
updatealarm(intent);
}
//modify here start
else if (action.equals(intent.action_headset_plug)) {
updateheadset(intent);
}
//modify here end
else if (action.equals(intent.action_sync_state_changed)) {
updatesyncstate(intent);
}
......
};
private statusbarpolicy(context context, statusbarservice service) {
mcontext = context;
mservice = service;
msignalstrength = new signalstrength();
if(featureoption.mtk_gemini_support == true) {
msignalstrengthgemini = new signalstrength();
}
mbatterystats = batterystatsservice.getservice();
....
//modify here start
//headset
mheadsetplugicondata = icondata.makeicon(
"headset",
null,com.android.internal.r.drawable.stat_sys_headset, 0, 0);
mheadsetplugicon = service.addicon(mheadsetplugicondata, null);
service.seticonvisibility(mheadsetplugicon, false);
//modify here end
....
intentfilter filter = new intentfilter();
// register for intent broadcasts for...
filter.addaction(intent.action_time_tick);
....
//modify here start
filter.addaction(intent.action_headset_plug);
//modify here end
....
}
//modify here start
private final void updateheadset(intent intent) {
slog.d(tag, "updateheadset: state=" + intent.getintextra("state", 0));
mservice.seticonvisibility(mheadsetplugicon, (intent.getintextra("state", 0) == 1)?true:false);
}
//modify here end
.....
}
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3.修改frameworks/base/core/res/res/values/arrays.xml
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<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_2</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">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>
<!-- modify here start. -->
<item><xliff:g id="id">headset</xliff:g></item>
<!-- modify here end -->
<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>
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其中“headset”这个字符串就是“mheadsetplugicondata = icondata.makeicon( "headset", null0, 0);”中的第一个参数。“<item><xliff:g id="id">headset</xliff:g></item> ”这个语句的位置于图标在status bar上显示的位置有关。
希望本文所述对大家的android程序设计有所帮助。