前面文章介绍了如何使用java的反射机制来调用蓝牙的隐藏api,本文继续来练习java的反射机制,探秘telephonymanager在framework里包含却在sdk隐藏的几项功能。
先来看一下本文程序运行的效果图,如下所示:
本文程序演示了以下功能:
1.所有来电自动接听;
2.所有来电自动挂断;
3.开启/关闭radio;
4.开启/关闭数据连接(wap or net的连接)。
调用telephonymanager的隐藏api是先参考framework的/base/telephony/java/com/android/internal/telephony/itelephony.aidl,然后自己实现一个itelephony.aidl,最后在telephonymanager中通过反射机制实例化自定义的itelephony,实例化之后就可以调用itelephony里面的函数了。
本文程序需要在androidmanifest.xml添加以下两行代码,以获得权限:
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<uses-permission android:name= "android.permission.call_phone" /> <uses-permission android:name= "android.permission.modify_phone_state" /> |
main.xml源码如下:
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<?xml version= "1.0" encoding= "utf-8" ?> <linearlayout xmlns:android= "http://schemas.android.com/apk/res/android" android:orientation= "vertical" android:layout_width= "fill_parent" android:layout_height= "fill_parent" > <radiogroup android:layout_height= "wrap_content" android:layout_width= "fill_parent" android:id= "@+id/rgrpselect" > <radiobutton android:layout_height= "wrap_content" android:layout_width= "fill_parent" android:id= "@+id/rbtnautoaccept" android:text= "所有来电自动接听" ></radiobutton> <radiobutton android:layout_height= "wrap_content" android:layout_width= "fill_parent" android:id= "@+id/rbtnautoreject" android:text= "所有来电自动挂断" ></radiobutton> </radiogroup> <togglebutton android:layout_height= "wrap_content" android:layout_width= "fill_parent" android:id= "@+id/tbtnradioswitch" android:texton= "radio已经启动" android:textoff= "radio已经关闭" android:textsize= "24dip" android:textstyle= "normal" ></togglebutton> <togglebutton android:layout_height= "wrap_content" android:layout_width= "fill_parent" android:id= "@+id/tbtndataconn" android:textsize= "24dip" android:textstyle= "normal" android:texton= "允许数据连接" android:textoff= "禁止数据连接" ></togglebutton> </linearlayout> |
phoneutils.java是手机功能类,从telephonymanager中实例化itelephony并返回,源码如下:
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package com.testtelephony; import java.lang.reflect.field; import java.lang.reflect.method; import com.android.internal.telephony.itelephony; import android.telephony.telephonymanager; import android.util.log; public class phoneutils { /** * 从telephonymanager中实例化itelephony,并返回 */ static public itelephony getitelephony(telephonymanager telmgr) throws exception { method getitelephonymethod = telmgr.getclass().getdeclaredmethod( "getitelephony" ); getitelephonymethod.setaccessible( true ); //私有化函数也能使用 return (itelephony)getitelephonymethod.invoke(telmgr); } static public void printallinform( class clsshow) { try { // 取得所有方法 method[] hidemethod = clsshow.getdeclaredmethods(); int i = 0 ; for (; i < hidemethod.length; i++) { log.e( "method name" , hidemethod[i].getname()); } // 取得所有常量 field[] allfields = clsshow.getfields(); for (i = 0 ; i < allfields.length; i++) { log.e( "field name" , allfields[i].getname()); } } catch (securityexception e) { // throw new runtimeexception(e.getmessage()); e.printstacktrace(); } catch (illegalargumentexception e) { // throw new runtimeexception(e.getmessage()); e.printstacktrace(); } catch (exception e) { // todo auto-generated catch block e.printstacktrace(); } } } |
testtelephony.java是主类,使用phonestatelistener监听通话状态,以及实现上述4种电话控制功能,源码如下:
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package com.testtelephony; import android.app.activity; import android.os.bundle; import android.telephony.phonestatelistener; import android.telephony.telephonymanager; import android.util.log; import android.view.view; import android.widget.radiogroup; import android.widget.togglebutton; public class testtelephony extends activity { /** called when the activity is first created. */ radiogroup rg; //来电操作单选框 togglebutton tbtnradioswitch; //radio开关 togglebutton tbtndataconn; //数据连接的开关 telephonymanager telmgr; callstatelistener statelistner; int checkedid= 0 ; @override public void oncreate(bundle savedinstancestate) { super .oncreate(savedinstancestate); setcontentview(r.layout.main); telmgr= (telephonymanager)getsystemservice(telephony_service); telmgr.listen( new callstatelistener(), callstatelistener.listen_call_state); phoneutils.printallinform(telephonymanager. class ); rg = (radiogroup)findviewbyid(r.id.rgrpselect); rg.setoncheckedchangelistener( new checkevent()); tbtnradioswitch=(togglebutton) this .findviewbyid(r.id.tbtnradioswitch); tbtnradioswitch.setonclicklistener( new clickevent()); try { tbtnradioswitch.setchecked(phoneutils.getitelephony(telmgr).isradioon()); } catch (exception e) { log.e( "error" ,e.getmessage()); } tbtndataconn=(togglebutton) this .findviewbyid(r.id.tbtndataconn); tbtndataconn.setonclicklistener( new clickevent()); try { tbtndataconn.setchecked(phoneutils.getitelephony(telmgr).isdataconnectivitypossible()); } catch (exception e) { log.e( "error" ,e.getmessage()); } } /** * 来电时的操作 * @author gv * */ public class checkevent implements radiogroup.oncheckedchangelistener{ @override public void oncheckedchanged(radiogroup group, int checkedid) { testtelephony. this .checkedid=checkedid; } } /** * radio和数据连接的开关 * @author gv * */ public class clickevent implements view.onclicklistener{ @override public void onclick(view v) { if (v == tbtnradioswitch) { try { phoneutils.getitelephony(telmgr).setradio(tbtnradioswitch.ischecked()); } catch (exception e) { log.e( "error" , e.getmessage()); } } else if (v==tbtndataconn){ try { if (tbtndataconn.ischecked()) phoneutils.getitelephony(telmgr).enabledataconnectivity(); else if (!tbtndataconn.ischecked()) phoneutils.getitelephony(telmgr).disabledataconnectivity(); } catch (exception e) { log.e( "error" , e.getmessage()); } } } } /** * 监视电话状态 * @author gv * */ public class callstatelistener extends phonestatelistener { @override public void oncallstatechanged( int state, string incomingnumber) { if (state==telephonymanager.call_state_idle) //挂断 { log.e( "idle" ,incomingnumber); } else if (state==telephonymanager.call_state_offhook) //接听 { log.e( "offhook" ,incomingnumber); } else if (state==telephonymanager.call_state_ringing) //来电 { if (testtelephony. this .checkedid==r.id.rbtnautoaccept) { try { //需要<uses-permission android:name="android.permission.modify_phone_state" /> phoneutils.getitelephony(telmgr).silenceringer(); //静铃 phoneutils.getitelephony(telmgr).answerringingcall(); //自动接听 } catch (exception e) { log.e( "error" ,e.getmessage()); } } else if (testtelephony. this .checkedid==r.id.rbtnautoreject) { try { phoneutils.getitelephony(telmgr).endcall(); //挂断 phoneutils.getitelephony(telmgr).cancelmissedcallsnotification(); //取消未接显示 } catch (exception e) { log.e( "error" ,e.getmessage()); } } } super .oncallstatechanged(state, incomingnumber); } } } |
感兴趣的读者可以测试一下本文实例代码,希望能够对大家的android项目开发有所帮助。