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 .....} |
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> |
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。
