Android 实现自动接听和挂断电话功能

添加权限
<uses-permission android:name="android.permission.CALL_PHONE"/>
<uses-permission android:name="android.permission.MODIFY_PHONE_STATE"/>

main.xml
<?xml version="1.0" encoding="utf-8"?>  
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"  
    androidrientation="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：
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.getName());    
            }    
            // 取得所有常量    
            Field[] allFields = clsShow.getFields();    
            for (i = 0; i < allFields.length; i++) {    
                Log.e("Field name", allFields.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：
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);  
        }  
    }  
}