上次介紹了如何使用JAVA的反射機(jī)制來(lái)調(diào)用 藍(lán)牙的隱藏API ，這次繼續(xù)練習(xí)JAVA的反射機(jī)制，探秘TelephonyManager在Framework里包含卻在SDK隱藏的幾項(xiàng)功能。先來(lái)看看本文程序運(yùn)行的效果圖：


本文程序演示了以下功能：

1.所有來(lái)電自動(dòng)接聽(tīng)；

2.所有來(lái)電自動(dòng)掛斷；

3.開(kāi)啟/關(guān)閉Radio；

4.開(kāi)啟/關(guān)閉數(shù)據(jù)連接(WAP or NET的連接)。

調(diào)用TelephonyManager的隱藏API是先參考Framework的\base\telephony\java\com\android\internal\telephony\ITelephony.aidl，然后自己實(shí)現(xiàn)一個(gè)ITelephony.aidl，最后在TelephonyManager中通過(guò)反射機(jī)制實(shí)例化自定義的ITelephony，實(shí)例化之后就可以調(diào)用ITelephony里面的函數(shù)了。

本文程序需要在AndroidManifest.xml添加以下兩行代碼，以獲得權(quán)限：

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

  

main.xml源碼如下：

    
<?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="所有來(lái)電自動(dòng)接聽(tīng)"></RadioButton>  
        <RadioButton android:layout_height="wrap_content"  
            android:layout_width="fill_parent" android:id="@+id/rbtnAutoReject"  
            android:text="所有來(lái)電自動(dòng)掛斷"></RadioButton>  
    </RadioGroup>  
    <ToggleButton android:layout_height="wrap_content"  
        android:layout_width="fill_parent" android:id="@+id/tbtnRadioSwitch"  
        android:textOn="Radio已經(jīng)啟動(dòng)" android:textOff="Radio已經(jīng)關(guān)閉"  
        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="允許數(shù)據(jù)連接"  
        android:textOff="禁止數(shù)據(jù)連接"></ToggleButton>  
</LinearLayout>  

  

PhoneUtils.java是手機(jī)功能類，從TelephonyManager中實(shí)例化ITelephony并返回，源碼如下：

    
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 {  
    /** 
     * 從TelephonyManager中實(shí)例化ITelephony，并返回 
     */  
    static public ITelephony getITelephony(TelephonyManager telMgr) throws Exception {  
        Method getITelephonyMethod = telMgr.getClass().getDeclaredMethod("getITelephony");  
        getITelephonyMethod.setAccessible(true);//私有化函數(shù)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是主類，使用PhoneStateListener監(jiān)聽(tīng)通話狀態(tài)，以及實(shí)現(xiàn)上述4種電話控制功能，源碼如下：

    
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;//來(lái)電操作單選框  
    ToggleButton tbtnRadioSwitch;//Radio開(kāi)關(guān)  
    ToggleButton tbtnDataConn;//數(shù)據(jù)連接的開(kāi)關(guān)  
    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());  
        }  
    }  
      
    /** 
     * 來(lái)電時(shí)的操作 
     * @author GV 
     * 
     */  
    public class CheckEvent implements RadioGroup.OnCheckedChangeListener{  
  
        @Override  
        public void onCheckedChanged(RadioGroup group, int checkedId) {  
            testTelephony.this.checkedId=checkedId;  
        }  
    }  
      
    /** 
     * Radio和數(shù)據(jù)連接的開(kāi)關(guān) 
     * @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());  
                }     
            }  
        }  
    }  
      
    /** 
     * 監(jiān)視電話狀態(tài) 
     * @author GV 
     * 
     */  
    public class CallStateListener extends PhoneStateListener {  
        @Override  
        public void onCallStateChanged(int state, String incomingNumber) {  
            if(state==TelephonyManager.CALL_STATE_IDLE)//掛斷  
            {  
                Log.e("IDLE",incomingNumber);  
            }  
            else if(state==TelephonyManager.CALL_STATE_OFFHOOK)//接聽(tīng)  
            {  
                Log.e("OFFHOOK",incomingNumber);  
            }  
            else if(state==TelephonyManager.CALL_STATE_RINGING)//來(lái)電  
            {  
                if(testTelephony.this.checkedId==R.id.rbtnAutoAccept)  
                {  
                    try {  
                        //需要<uses-permission android:name="android.permission.MODIFY_PHONE_STATE" />   
                        PhoneUtils.getITelephony(telMgr).silenceRinger();//靜鈴  
                        PhoneUtils.getITelephony(telMgr).answerRingingCall();//自動(dòng)接聽(tīng)  
                          
                    } catch (Exception e) {  
                        Log.e("error",e.getMessage());  
                    }     
                }  
                else if(testTelephony.this.checkedId==R.id.rbtnAutoReject)  
                {  
                    try {  
                        PhoneUtils.getITelephony(telMgr).endCall();//掛斷  
                        PhoneUtils.getITelephony(telMgr).cancelMissedCallsNotification();//取消未接顯示  
                    } catch (Exception e) {  
                        Log.e("error",e.getMessage());    
                    }  
                }  
            }  
            super.onCallStateChanged(state, incomingNumber);  
        }  
    }  
}  

  

Android提高第十四篇之探秘TelephonyManager