Android之拨打接挂电话功能实现

手机是现代人们必不可少的工具之一，而使用得最多的就是拨打电话接听电话，本文通过一个简单的例子实现这个功能。

首先，加入我们的电话处理类

PhoneUtil.java

package com.sl.callphonedemo;import java.lang.reflect.InvocationTargetException;  import java.lang.reflect.Method;  import android.content.Context;  import android.content.Intent;  import android.media.AudioManager;  import android.net.Uri;  import android.os.Build;  import android.telephony.TelephonyManager;  import android.text.TextUtils;  import android.view.KeyEvent;    public class PhoneUtil {    public static String TAG = PhoneUtil.class.getSimpleName();            /**      * 挂断电话      * @param context      */      public static void endCall(Context context) {            try {                Object telephonyObject = getTelephonyObject(context);                if (null != telephonyObject) {                    Class telephonyClass = telephonyObject.getClass();                        Method endCallMethod = telephonyClass.getMethod("endCall");                    endCallMethod.setAccessible(true);                        endCallMethod.invoke(telephonyObject);                }            } catch (SecurityException e) {                e.printStackTrace();            } catch (NoSuchMethodException e) {                e.printStackTrace();            } catch (IllegalArgumentException e) {                e.printStackTrace();            } catch (IllegalAccessException e) {                e.printStackTrace();            } catch (InvocationTargetException e) {                e.printStackTrace();            }            }                private static Object getTelephonyObject(Context context) {            Object telephonyObject = null;            try {                // 初始化iTelephony                TelephonyManager telephonyManager = (TelephonyManager) context.getSystemService(Context.TELEPHONY_SERVICE);                // Will be used to invoke hidden methods with reflection                // Get the current object implementing ITelephony interface                Class telManager = telephonyManager.getClass();                Method getITelephony = telManager.getDeclaredMethod("getITelephony");                getITelephony.setAccessible(true);                telephonyObject = getITelephony.invoke(telephonyManager);            } catch (SecurityException e) {                e.printStackTrace();            } catch (NoSuchMethodException e) {                e.printStackTrace();            } catch (IllegalArgumentException e) {                e.printStackTrace();            } catch (IllegalAccessException e) {                e.printStackTrace();            } catch (InvocationTargetException e) {                e.printStackTrace();            }            return telephonyObject;        }                    /**      * 通过反射调用的方法，接听电话，该方法只在android 2.3之前的系统上有效。      * @param context      */        private static void answerRingingCallWithReflect(Context context) {            try {                Object telephonyObject = getTelephonyObject(context);                if (null != telephonyObject) {                     Class telephonyClass = telephonyObject.getClass();                     Method endCallMethod = telephonyClass.getMethod("answerRingingCall");                     endCallMethod.setAccessible(true);                                         endCallMethod.invoke(telephonyObject);                    // ITelephony iTelephony = (ITelephony) telephonyObject;                    // iTelephony.answerRingingCall();                }            } catch (SecurityException e) {                e.printStackTrace();            } catch (IllegalArgumentException e) {                e.printStackTrace();            } catch (IllegalAccessException e) {                e.printStackTrace();            } catch (InvocationTargetException e) {                e.printStackTrace();            } catch (NoSuchMethodException e) {                e.printStackTrace();            }            }                /**      * 伪造一个有线耳机插入，并按接听键的广播，让系统开始接听电话。      * @param context      */        private static void answerRingingCallWithBroadcast(Context context){            AudioManager localAudioManager = (AudioManager) context.getSystemService(Context.AUDIO_SERVICE);            //判断是否插上了耳机            boolean isWiredHeadsetOn = localAudioManager.isWiredHeadsetOn();            if (!isWiredHeadsetOn) {                Intent headsetPluggedIntent = new Intent(Intent.ACTION_HEADSET_PLUG);                headsetPluggedIntent.putExtra("state", 1);                headsetPluggedIntent.putExtra("microphone", 0);                headsetPluggedIntent.putExtra("name", "");                context.sendBroadcast(headsetPluggedIntent);                                Intent meidaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);                KeyEvent keyEvent = new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_HEADSETHOOK);                meidaButtonIntent.putExtra(Intent.EXTRA_KEY_EVENT,keyEvent);                context.sendOrderedBroadcast(meidaButtonIntent, null);                                Intent headsetUnpluggedIntent = new Intent(Intent.ACTION_HEADSET_PLUG);                headsetUnpluggedIntent.putExtra("state", 0);                headsetUnpluggedIntent.putExtra("microphone", 0);                headsetUnpluggedIntent.putExtra("name", "");                context.sendBroadcast(headsetUnpluggedIntent);                            } else {                Intent meidaButtonIntent = new Intent(Intent.ACTION_MEDIA_BUTTON);                KeyEvent keyEvent = new KeyEvent(KeyEvent.ACTION_UP, KeyEvent.KEYCODE_HEADSETHOOK);                meidaButtonIntent.putExtra(Intent.EXTRA_KEY_EVENT,keyEvent);                context.sendOrderedBroadcast(meidaButtonIntent, null);            }        }            /**      * 接听电话      * @param context      */        public static void answerRingingCall(Context context) {            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.GINGERBREAD) {  //2.3或2.3以上系统              answerRingingCallWithBroadcast(context);            } else {                answerRingingCallWithReflect(context);            }        }                /**      * 打电话      * @param context      * @param phoneNumber      */        public static void callPhone(Context context, String phoneNumber) {            if(!TextUtils.isEmpty(phoneNumber)){                try {                    Intent callIntent = new Intent(Intent.ACTION_CALL, Uri.parse("tel:"+ phoneNumber));                    context.startActivity(callIntent);                } catch (Exception e) {                    e.printStackTrace();                }            }        }                /**      * 拨电话      * @param context      * @param phoneNumber      */        public static void dialPhone(Context context, String phoneNumber){            if(!TextUtils.isEmpty(phoneNumber)){                try {                    Intent callIntent = new Intent(Intent.ACTION_DIAL, Uri.parse("tel:"+ phoneNumber));                    context.startActivity(callIntent);                } catch (Exception e) {                    e.printStackTrace();                }            }        }    }

然后，在界面上增加四个操作按钮

activity_main.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    xmlns:tools="http://schemas.android.com/tools"    android:layout_width="match_parent"    android:layout_height="match_parent"    android:paddingBottom="@dimen/activity_vertical_margin"    android:paddingLeft="@dimen/activity_horizontal_margin"    android:paddingRight="@dimen/activity_horizontal_margin"    android:paddingTop="@dimen/activity_vertical_margin"    tools:context=".MainActivity"    android:orientation="vertical" >    <TextView        android:layout_width="wrap_content"        android:layout_height="wrap_content"        android:text="@string/hello_world" />    <Button         android:id="@+id/btn1"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="拨电话"/>    <Button         android:id="@+id/btn2"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="打电话"/>    <Button         android:id="@+id/btn3"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="接电话"/>    <Button         android:id="@+id/btn4"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:text="挂电话"/></LinearLayout>

接着，在主界面程序中实现功能

package com.sl.callphonedemo;import android.os.Bundle;import android.app.Activity;import android.content.Intent;import android.view.Menu;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;public class MainActivity extends Activity{Button btn1,btn2,btn3,btn4;@Overrideprotected void onCreate(Bundle savedInstanceState){super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);btn1 = (Button)findViewById(R.id.btn1);btn2 = (Button)findViewById(R.id.btn2);btn3 = (Button)findViewById(R.id.btn3);btn4 = (Button)findViewById(R.id.btn4);btn1.setOnClickListener(listener);btn2.setOnClickListener(listener);btn3.setOnClickListener(listener);btn4.setOnClickListener(listener);}private OnClickListener listener = new OnClickListener(){@Overridepublic void onClick(View v){Button btn = (Button)v;Intent intent = new Intent();switch (btn.getId()){case R.id.btn1://拨电话PhoneUtil.dialPhone(MainActivity.this, "13123456789");break;case R.id.btn2://打电话PhoneUtil.callPhone(MainActivity.this, "13123456789");break;case R.id.btn3://接电话PhoneUtil.answerRingingCall(MainActivity.this);break;case R.id.btn4://挂电话PhoneUtil.endCall(MainActivity.this);break;default:break;}}};}

当然，不能忘了设置权限

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

最后，我们来看看效果

拨电话效果

打电话效果

关于接电话和挂电话，我这里无法演示。以后如果需要可以在程序中调用这个功能。

好了，就到这了，谢谢大家的支持！

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